diff --git a/m4/Makefile.am b/m4/Makefile.am index b75f08fe..83797976 100644 --- a/m4/Makefile.am +++ b/m4/Makefile.am @@ -1,4 +1,4 @@ -## Copyright (C) 2008-2017 Dirk-Jan C. Binnema +## Copyright (C) 2008-2020 Dirk-Jan C. Binnema ## ## This program is free software; you can redistribute it and/or modify ## it under the terms of the GNU General Public License as published by @@ -16,12 +16,28 @@ include $(top_srcdir)/gtest.mk -EXTRA_DIST = \ - ax_cxx_compile_stdcxx.m4 \ +EXTRA_DIST= \ + ax_ac_append_to_file.m4 \ + ax_ac_print_to_file.m4 \ + ax_add_am_macro_static.m4 \ + ax_am_macros_static.m4 \ + ax_append_compile_flags.m4 \ + ax_append_flag.m4 \ + ax_append_link_flags.m4 \ + ax_check_compile_flag.m4 \ + ax_check_enable_debug.m4 \ + ax_check_gnu_make.m4 \ + ax_check_link_flag.m4 \ + ax_code_coverage.m4 \ + ax_compiler_flags_cflags.m4 \ + ax_compiler_flags_cxxflags.m4 \ + ax_compiler_flags_gir.m4 \ + ax_compiler_flags_ldflags.m4 \ + ax_compiler_flags.m4 \ ax_cxx_compile_stdcxx_14.m4 \ + ax_cxx_compile_stdcxx.m4 \ + ax_file_escapes.m4 \ + ax_is_release.m4 \ + ax_require_defined.m4 \ ax_valgrind_check.m4 \ - guile.m4 \ - lib-ld.m4 \ - lib-link.m4 \ - lib-prefix.m4 \ - perlmod.m4 + guile-2.2.m4 diff --git a/m4/ax_ac_append_to_file.m4 b/m4/ax_ac_append_to_file.m4 new file mode 100644 index 00000000..242b3d52 --- /dev/null +++ b/m4/ax_ac_append_to_file.m4 @@ -0,0 +1,32 @@ +# =========================================================================== +# https://www.gnu.org/software/autoconf-archive/ax_ac_append_to_file.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_AC_APPEND_TO_FILE([FILE],[DATA]) +# +# DESCRIPTION +# +# Appends the specified data to the specified Autoconf is run. If you want +# to append to a file when configure is run use AX_APPEND_TO_FILE instead. +# +# LICENSE +# +# Copyright (c) 2009 Allan Caffee +# +# Copying and distribution of this file, with or without modification, are +# permitted in any medium without royalty provided the copyright notice +# and this notice are preserved. This file is offered as-is, without any +# warranty. + +#serial 10 + +AC_DEFUN([AX_AC_APPEND_TO_FILE],[ +AC_REQUIRE([AX_FILE_ESCAPES]) +m4_esyscmd( +AX_FILE_ESCAPES +[ +printf "%s" "$2" >> "$1" +]) +]) diff --git a/m4/ax_ac_print_to_file.m4 b/m4/ax_ac_print_to_file.m4 new file mode 100644 index 00000000..642dfc15 --- /dev/null +++ b/m4/ax_ac_print_to_file.m4 @@ -0,0 +1,32 @@ +# =========================================================================== +# https://www.gnu.org/software/autoconf-archive/ax_ac_print_to_file.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_AC_PRINT_TO_FILE([FILE],[DATA]) +# +# DESCRIPTION +# +# Writes the specified data to the specified file when Autoconf is run. If +# you want to print to a file when configure is run use AX_PRINT_TO_FILE +# instead. +# +# LICENSE +# +# Copyright (c) 2009 Allan Caffee +# +# Copying and distribution of this file, with or without modification, are +# permitted in any medium without royalty provided the copyright notice +# and this notice are preserved. This file is offered as-is, without any +# warranty. + +#serial 10 + +AC_DEFUN([AX_AC_PRINT_TO_FILE],[ +m4_esyscmd( +AC_REQUIRE([AX_FILE_ESCAPES]) +[ +printf "%s" "$2" > "$1" +]) +]) diff --git a/m4/ax_add_am_macro_static.m4 b/m4/ax_add_am_macro_static.m4 new file mode 100644 index 00000000..6442d24b --- /dev/null +++ b/m4/ax_add_am_macro_static.m4 @@ -0,0 +1,28 @@ +# =========================================================================== +# https://www.gnu.org/software/autoconf-archive/ax_add_am_macro_static.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_ADD_AM_MACRO_STATIC([RULE]) +# +# DESCRIPTION +# +# Adds the specified rule to $AMINCLUDE. +# +# LICENSE +# +# Copyright (c) 2009 Tom Howard +# Copyright (c) 2009 Allan Caffee +# +# Copying and distribution of this file, with or without modification, are +# permitted in any medium without royalty provided the copyright notice +# and this notice are preserved. This file is offered as-is, without any +# warranty. + +#serial 8 + +AC_DEFUN([AX_ADD_AM_MACRO_STATIC],[ + AC_REQUIRE([AX_AM_MACROS_STATIC]) + AX_AC_APPEND_TO_FILE(AMINCLUDE_STATIC,[$1]) +]) diff --git a/m4/ax_am_macros_static.m4 b/m4/ax_am_macros_static.m4 new file mode 100644 index 00000000..f4cee8c8 --- /dev/null +++ b/m4/ax_am_macros_static.m4 @@ -0,0 +1,38 @@ +# =========================================================================== +# https://www.gnu.org/software/autoconf-archive/ax_am_macros_static.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_AM_MACROS_STATIC +# +# DESCRIPTION +# +# Adds support for macros that create Automake rules. You must manually +# add the following line +# +# include $(top_srcdir)/aminclude_static.am +# +# to your Makefile.am files. +# +# LICENSE +# +# Copyright (c) 2009 Tom Howard +# Copyright (c) 2009 Allan Caffee +# +# Copying and distribution of this file, with or without modification, are +# permitted in any medium without royalty provided the copyright notice +# and this notice are preserved. This file is offered as-is, without any +# warranty. + +#serial 11 + +AC_DEFUN([AMINCLUDE_STATIC],[aminclude_static.am]) + +AC_DEFUN([AX_AM_MACROS_STATIC], +[ +AX_AC_PRINT_TO_FILE(AMINCLUDE_STATIC,[ +# ]AMINCLUDE_STATIC[ generated automatically by Autoconf +# from AX_AM_MACROS_STATIC on ]m4_esyscmd([LC_ALL=C date])[ +]) +]) diff --git a/m4/ax_append_compile_flags.m4 b/m4/ax_append_compile_flags.m4 new file mode 100644 index 00000000..9c856356 --- /dev/null +++ b/m4/ax_append_compile_flags.m4 @@ -0,0 +1,46 @@ +# ============================================================================ +# https://www.gnu.org/software/autoconf-archive/ax_append_compile_flags.html +# ============================================================================ +# +# SYNOPSIS +# +# AX_APPEND_COMPILE_FLAGS([FLAG1 FLAG2 ...], [FLAGS-VARIABLE], [EXTRA-FLAGS], [INPUT]) +# +# DESCRIPTION +# +# For every FLAG1, FLAG2 it is checked whether the compiler works with the +# flag. If it does, the flag is added FLAGS-VARIABLE +# +# If FLAGS-VARIABLE is not specified, the current language's flags (e.g. +# CFLAGS) is used. During the check the flag is always added to the +# current language's flags. +# +# If EXTRA-FLAGS is defined, it is added to the current language's default +# flags (e.g. CFLAGS) when the check is done. The check is thus made with +# the flags: "CFLAGS EXTRA-FLAGS FLAG". This can for example be used to +# force the compiler to issue an error when a bad flag is given. +# +# INPUT gives an alternative input source to AC_COMPILE_IFELSE. +# +# NOTE: This macro depends on the AX_APPEND_FLAG and +# AX_CHECK_COMPILE_FLAG. Please keep this macro in sync with +# AX_APPEND_LINK_FLAGS. +# +# LICENSE +# +# Copyright (c) 2011 Maarten Bosmans +# +# Copying and distribution of this file, with or without modification, are +# permitted in any medium without royalty provided the copyright notice +# and this notice are preserved. This file is offered as-is, without any +# warranty. + +#serial 7 + +AC_DEFUN([AX_APPEND_COMPILE_FLAGS], +[AX_REQUIRE_DEFINED([AX_CHECK_COMPILE_FLAG]) +AX_REQUIRE_DEFINED([AX_APPEND_FLAG]) +for flag in $1; do + AX_CHECK_COMPILE_FLAG([$flag], [AX_APPEND_FLAG([$flag], [$2])], [], [$3], [$4]) +done +])dnl AX_APPEND_COMPILE_FLAGS diff --git a/m4/ax_append_flag.m4 b/m4/ax_append_flag.m4 new file mode 100644 index 00000000..dd6d8b61 --- /dev/null +++ b/m4/ax_append_flag.m4 @@ -0,0 +1,50 @@ +# =========================================================================== +# https://www.gnu.org/software/autoconf-archive/ax_append_flag.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_APPEND_FLAG(FLAG, [FLAGS-VARIABLE]) +# +# DESCRIPTION +# +# FLAG is appended to the FLAGS-VARIABLE shell variable, with a space +# added in between. +# +# If FLAGS-VARIABLE is not specified, the current language's flags (e.g. +# CFLAGS) is used. FLAGS-VARIABLE is not changed if it already contains +# FLAG. If FLAGS-VARIABLE is unset in the shell, it is set to exactly +# FLAG. +# +# NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. +# +# LICENSE +# +# Copyright (c) 2008 Guido U. Draheim +# Copyright (c) 2011 Maarten Bosmans +# +# Copying and distribution of this file, with or without modification, are +# permitted in any medium without royalty provided the copyright notice +# and this notice are preserved. This file is offered as-is, without any +# warranty. + +#serial 8 + +AC_DEFUN([AX_APPEND_FLAG], +[dnl +AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_SET_IF +AS_VAR_PUSHDEF([FLAGS], [m4_default($2,_AC_LANG_PREFIX[FLAGS])]) +AS_VAR_SET_IF(FLAGS,[ + AS_CASE([" AS_VAR_GET(FLAGS) "], + [*" $1 "*], [AC_RUN_LOG([: FLAGS already contains $1])], + [ + AS_VAR_APPEND(FLAGS,[" $1"]) + AC_RUN_LOG([: FLAGS="$FLAGS"]) + ]) + ], + [ + AS_VAR_SET(FLAGS,[$1]) + AC_RUN_LOG([: FLAGS="$FLAGS"]) + ]) +AS_VAR_POPDEF([FLAGS])dnl +])dnl AX_APPEND_FLAG diff --git a/m4/ax_append_link_flags.m4 b/m4/ax_append_link_flags.m4 new file mode 100644 index 00000000..99b9fa5b --- /dev/null +++ b/m4/ax_append_link_flags.m4 @@ -0,0 +1,44 @@ +# =========================================================================== +# https://www.gnu.org/software/autoconf-archive/ax_append_link_flags.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_APPEND_LINK_FLAGS([FLAG1 FLAG2 ...], [FLAGS-VARIABLE], [EXTRA-FLAGS], [INPUT]) +# +# DESCRIPTION +# +# For every FLAG1, FLAG2 it is checked whether the linker works with the +# flag. If it does, the flag is added FLAGS-VARIABLE +# +# If FLAGS-VARIABLE is not specified, the linker's flags (LDFLAGS) is +# used. During the check the flag is always added to the linker's flags. +# +# If EXTRA-FLAGS is defined, it is added to the linker's default flags +# when the check is done. The check is thus made with the flags: "LDFLAGS +# EXTRA-FLAGS FLAG". This can for example be used to force the linker to +# issue an error when a bad flag is given. +# +# INPUT gives an alternative input source to AC_COMPILE_IFELSE. +# +# NOTE: This macro depends on the AX_APPEND_FLAG and AX_CHECK_LINK_FLAG. +# Please keep this macro in sync with AX_APPEND_COMPILE_FLAGS. +# +# LICENSE +# +# Copyright (c) 2011 Maarten Bosmans +# +# Copying and distribution of this file, with or without modification, are +# permitted in any medium without royalty provided the copyright notice +# and this notice are preserved. This file is offered as-is, without any +# warranty. + +#serial 7 + +AC_DEFUN([AX_APPEND_LINK_FLAGS], +[AX_REQUIRE_DEFINED([AX_CHECK_LINK_FLAG]) +AX_REQUIRE_DEFINED([AX_APPEND_FLAG]) +for flag in $1; do + AX_CHECK_LINK_FLAG([$flag], [AX_APPEND_FLAG([$flag], [m4_default([$2], [LDFLAGS])])], [], [$3], [$4]) +done +])dnl AX_APPEND_LINK_FLAGS diff --git a/m4/ax_check_compile_flag.m4 b/m4/ax_check_compile_flag.m4 new file mode 100644 index 00000000..bd753b34 --- /dev/null +++ b/m4/ax_check_compile_flag.m4 @@ -0,0 +1,53 @@ +# =========================================================================== +# https://www.gnu.org/software/autoconf-archive/ax_check_compile_flag.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_CHECK_COMPILE_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS], [INPUT]) +# +# DESCRIPTION +# +# Check whether the given FLAG works with the current language's compiler +# or gives an error. (Warnings, however, are ignored) +# +# ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on +# success/failure. +# +# If EXTRA-FLAGS is defined, it is added to the current language's default +# flags (e.g. CFLAGS) when the check is done. The check is thus made with +# the flags: "CFLAGS EXTRA-FLAGS FLAG". This can for example be used to +# force the compiler to issue an error when a bad flag is given. +# +# INPUT gives an alternative input source to AC_COMPILE_IFELSE. +# +# NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this +# macro in sync with AX_CHECK_{PREPROC,LINK}_FLAG. +# +# LICENSE +# +# Copyright (c) 2008 Guido U. Draheim +# Copyright (c) 2011 Maarten Bosmans +# +# Copying and distribution of this file, with or without modification, are +# permitted in any medium without royalty provided the copyright notice +# and this notice are preserved. This file is offered as-is, without any +# warranty. + +#serial 6 + +AC_DEFUN([AX_CHECK_COMPILE_FLAG], +[AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF +AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]flags_$4_$1])dnl +AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [ + ax_check_save_flags=$[]_AC_LANG_PREFIX[]FLAGS + _AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $4 $1" + AC_COMPILE_IFELSE([m4_default([$5],[AC_LANG_PROGRAM()])], + [AS_VAR_SET(CACHEVAR,[yes])], + [AS_VAR_SET(CACHEVAR,[no])]) + _AC_LANG_PREFIX[]FLAGS=$ax_check_save_flags]) +AS_VAR_IF(CACHEVAR,yes, + [m4_default([$2], :)], + [m4_default([$3], :)]) +AS_VAR_POPDEF([CACHEVAR])dnl +])dnl AX_CHECK_COMPILE_FLAGS diff --git a/m4/ax_check_enable_debug.m4 b/m4/ax_check_enable_debug.m4 new file mode 100644 index 00000000..7bc77108 --- /dev/null +++ b/m4/ax_check_enable_debug.m4 @@ -0,0 +1,124 @@ +# =========================================================================== +# https://www.gnu.org/software/autoconf-archive/ax_check_enable_debug.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_CHECK_ENABLE_DEBUG([enable by default=yes/info/profile/no], [ENABLE DEBUG VARIABLES ...], [DISABLE DEBUG VARIABLES NDEBUG ...], [IS-RELEASE]) +# +# DESCRIPTION +# +# Check for the presence of an --enable-debug option to configure, with +# the specified default value used when the option is not present. Return +# the value in the variable $ax_enable_debug. +# +# Specifying 'yes' adds '-g -O0' to the compilation flags for all +# languages. Specifying 'info' adds '-g' to the compilation flags. +# Specifying 'profile' adds '-g -pg' to the compilation flags and '-pg' to +# the linking flags. Otherwise, nothing is added. +# +# Define the variables listed in the second argument if debug is enabled, +# defaulting to no variables. Defines the variables listed in the third +# argument if debug is disabled, defaulting to NDEBUG. All lists of +# variables should be space-separated. +# +# If debug is not enabled, ensure AC_PROG_* will not add debugging flags. +# Should be invoked prior to any AC_PROG_* compiler checks. +# +# IS-RELEASE can be used to change the default to 'no' when making a +# release. Set IS-RELEASE to 'yes' or 'no' as appropriate. By default, it +# uses the value of $ax_is_release, so if you are using the AX_IS_RELEASE +# macro, there is no need to pass this parameter. +# +# AX_IS_RELEASE([git-directory]) +# AX_CHECK_ENABLE_DEBUG() +# +# LICENSE +# +# Copyright (c) 2011 Rhys Ulerich +# Copyright (c) 2014, 2015 Philip Withnall +# +# Copying and distribution of this file, with or without modification, are +# permitted in any medium without royalty provided the copyright notice +# and this notice are preserved. + +#serial 9 + +AC_DEFUN([AX_CHECK_ENABLE_DEBUG],[ + AC_BEFORE([$0],[AC_PROG_CC])dnl + AC_BEFORE([$0],[AC_PROG_CXX])dnl + AC_BEFORE([$0],[AC_PROG_F77])dnl + AC_BEFORE([$0],[AC_PROG_FC])dnl + + AC_MSG_CHECKING(whether to enable debugging) + + ax_enable_debug_default=m4_tolower(m4_normalize(ifelse([$1],,[no],[$1]))) + ax_enable_debug_is_release=m4_tolower(m4_normalize(ifelse([$4],, + [$ax_is_release], + [$4]))) + + # If this is a release, override the default. + AS_IF([test "$ax_enable_debug_is_release" = "yes"], + [ax_enable_debug_default="no"]) + + m4_define(ax_enable_debug_vars,[m4_normalize(ifelse([$2],,,[$2]))]) + m4_define(ax_disable_debug_vars,[m4_normalize(ifelse([$3],,[NDEBUG],[$3]))]) + + AC_ARG_ENABLE(debug, + [AS_HELP_STRING([--enable-debug=]@<:@yes/info/profile/no@:>@,[compile with debugging])], + [],enable_debug=$ax_enable_debug_default) + + # empty mean debug yes + AS_IF([test "x$enable_debug" = "x"], + [enable_debug="yes"]) + + # case of debug + AS_CASE([$enable_debug], + [yes],[ + AC_MSG_RESULT(yes) + CFLAGS="${CFLAGS} -g -O0" + CXXFLAGS="${CXXFLAGS} -g -O0" + FFLAGS="${FFLAGS} -g -O0" + FCFLAGS="${FCFLAGS} -g -O0" + OBJCFLAGS="${OBJCFLAGS} -g -O0" + ], + [info],[ + AC_MSG_RESULT(info) + CFLAGS="${CFLAGS} -g" + CXXFLAGS="${CXXFLAGS} -g" + FFLAGS="${FFLAGS} -g" + FCFLAGS="${FCFLAGS} -g" + OBJCFLAGS="${OBJCFLAGS} -g" + ], + [profile],[ + AC_MSG_RESULT(profile) + CFLAGS="${CFLAGS} -g -pg" + CXXFLAGS="${CXXFLAGS} -g -pg" + FFLAGS="${FFLAGS} -g -pg" + FCFLAGS="${FCFLAGS} -g -pg" + OBJCFLAGS="${OBJCFLAGS} -g -pg" + LDFLAGS="${LDFLAGS} -pg" + ], + [ + AC_MSG_RESULT(no) + dnl Ensure AC_PROG_CC/CXX/F77/FC/OBJC will not enable debug flags + dnl by setting any unset environment flag variables + AS_IF([test "x${CFLAGS+set}" != "xset"], + [CFLAGS=""]) + AS_IF([test "x${CXXFLAGS+set}" != "xset"], + [CXXFLAGS=""]) + AS_IF([test "x${FFLAGS+set}" != "xset"], + [FFLAGS=""]) + AS_IF([test "x${FCFLAGS+set}" != "xset"], + [FCFLAGS=""]) + AS_IF([test "x${OBJCFLAGS+set}" != "xset"], + [OBJCFLAGS=""]) + ]) + + dnl Define various variables if debugging is disabled. + dnl assert.h is a NOP if NDEBUG is defined, so define it by default. + AS_IF([test "x$enable_debug" = "xyes"], + [m4_map_args_w(ax_enable_debug_vars, [AC_DEFINE(], [,[1],[Define if debugging is enabled])])], + [m4_map_args_w(ax_disable_debug_vars, [AC_DEFINE(], [,[1],[Define if debugging is disabled])])]) + ax_enable_debug=$enable_debug +]) diff --git a/m4/ax_check_gnu_make.m4 b/m4/ax_check_gnu_make.m4 new file mode 100644 index 00000000..68110439 --- /dev/null +++ b/m4/ax_check_gnu_make.m4 @@ -0,0 +1,95 @@ +# =========================================================================== +# https://www.gnu.org/software/autoconf-archive/ax_check_gnu_make.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_CHECK_GNU_MAKE([run-if-true],[run-if-false]) +# +# DESCRIPTION +# +# This macro searches for a GNU version of make. If a match is found: +# +# * The makefile variable `ifGNUmake' is set to the empty string, otherwise +# it is set to "#". This is useful for including a special features in a +# Makefile, which cannot be handled by other versions of make. +# * The makefile variable `ifnGNUmake' is set to #, otherwise +# it is set to the empty string. This is useful for including a special +# features in a Makefile, which can be handled +# by other versions of make or to specify else like clause. +# * The variable `_cv_gnu_make_command` is set to the command to invoke +# GNU make if it exists, the empty string otherwise. +# * The variable `ax_cv_gnu_make_command` is set to the command to invoke +# GNU make by copying `_cv_gnu_make_command`, otherwise it is unset. +# * If GNU Make is found, its version is extracted from the output of +# `make --version` as the last field of a record of space-separated +# columns and saved into the variable `ax_check_gnu_make_version`. +# * Additionally if GNU Make is found, run shell code run-if-true +# else run shell code run-if-false. +# +# Here is an example of its use: +# +# Makefile.in might contain: +# +# # A failsafe way of putting a dependency rule into a makefile +# $(DEPEND): +# $(CC) -MM $(srcdir)/*.c > $(DEPEND) +# +# @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND))) +# @ifGNUmake@ include $(DEPEND) +# @ifGNUmake@ else +# fallback code +# @ifGNUmake@ endif +# +# Then configure.in would normally contain: +# +# AX_CHECK_GNU_MAKE() +# AC_OUTPUT(Makefile) +# +# Then perhaps to cause gnu make to override any other make, we could do +# something like this (note that GNU make always looks for GNUmakefile +# first): +# +# if ! test x$_cv_gnu_make_command = x ; then +# mv Makefile GNUmakefile +# echo .DEFAULT: > Makefile ; +# echo \ $_cv_gnu_make_command \$@ >> Makefile; +# fi +# +# Then, if any (well almost any) other make is called, and GNU make also +# exists, then the other make wraps the GNU make. +# +# LICENSE +# +# Copyright (c) 2008 John Darrington +# Copyright (c) 2015 Enrico M. Crisostomo +# +# Copying and distribution of this file, with or without modification, are +# permitted in any medium without royalty provided the copyright notice +# and this notice are preserved. This file is offered as-is, without any +# warranty. + +#serial 11 + +AC_DEFUN([AX_CHECK_GNU_MAKE],dnl + [AC_PROG_AWK + AC_CACHE_CHECK([for GNU make],[_cv_gnu_make_command],[dnl + _cv_gnu_make_command="" ; +dnl Search all the common names for GNU make + for a in "$MAKE" make gmake gnumake ; do + if test -z "$a" ; then continue ; fi ; + if "$a" --version 2> /dev/null | grep GNU 2>&1 > /dev/null ; then + _cv_gnu_make_command=$a ; + AX_CHECK_GNU_MAKE_HEADLINE=$("$a" --version 2> /dev/null | grep "GNU Make") + ax_check_gnu_make_version=$(echo ${AX_CHECK_GNU_MAKE_HEADLINE} | ${AWK} -F " " '{ print $(NF); }') + break ; + fi + done ;]) +dnl If there was a GNU version, then set @ifGNUmake@ to the empty string, '#' otherwise + AS_VAR_IF([_cv_gnu_make_command], [""], [AS_VAR_SET([ifGNUmake], ["#"])], [AS_VAR_SET([ifGNUmake], [""])]) + AS_VAR_IF([_cv_gnu_make_command], [""], [AS_VAR_SET([ifnGNUmake], [""])], [AS_VAR_SET([ifGNUmake], ["#"])]) + AS_VAR_IF([_cv_gnu_make_command], [""], [AS_UNSET(ax_cv_gnu_make_command)], [AS_VAR_SET([ax_cv_gnu_make_command], [${_cv_gnu_make_command}])]) + AS_VAR_IF([_cv_gnu_make_command], [""],[$2],[$1]) + AC_SUBST([ifGNUmake]) + AC_SUBST([ifnGNUmake]) +]) diff --git a/m4/ax_check_link_flag.m4 b/m4/ax_check_link_flag.m4 new file mode 100644 index 00000000..03a30ce4 --- /dev/null +++ b/m4/ax_check_link_flag.m4 @@ -0,0 +1,53 @@ +# =========================================================================== +# https://www.gnu.org/software/autoconf-archive/ax_check_link_flag.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_CHECK_LINK_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS], [INPUT]) +# +# DESCRIPTION +# +# Check whether the given FLAG works with the linker or gives an error. +# (Warnings, however, are ignored) +# +# ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on +# success/failure. +# +# If EXTRA-FLAGS is defined, it is added to the linker's default flags +# when the check is done. The check is thus made with the flags: "LDFLAGS +# EXTRA-FLAGS FLAG". This can for example be used to force the linker to +# issue an error when a bad flag is given. +# +# INPUT gives an alternative input source to AC_LINK_IFELSE. +# +# NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this +# macro in sync with AX_CHECK_{PREPROC,COMPILE}_FLAG. +# +# LICENSE +# +# Copyright (c) 2008 Guido U. Draheim +# Copyright (c) 2011 Maarten Bosmans +# +# Copying and distribution of this file, with or without modification, are +# permitted in any medium without royalty provided the copyright notice +# and this notice are preserved. This file is offered as-is, without any +# warranty. + +#serial 6 + +AC_DEFUN([AX_CHECK_LINK_FLAG], +[AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF +AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_ldflags_$4_$1])dnl +AC_CACHE_CHECK([whether the linker accepts $1], CACHEVAR, [ + ax_check_save_flags=$LDFLAGS + LDFLAGS="$LDFLAGS $4 $1" + AC_LINK_IFELSE([m4_default([$5],[AC_LANG_PROGRAM()])], + [AS_VAR_SET(CACHEVAR,[yes])], + [AS_VAR_SET(CACHEVAR,[no])]) + LDFLAGS=$ax_check_save_flags]) +AS_VAR_IF(CACHEVAR,yes, + [m4_default([$2], :)], + [m4_default([$3], :)]) +AS_VAR_POPDEF([CACHEVAR])dnl +])dnl AX_CHECK_LINK_FLAGS diff --git a/m4/ax_code_coverage.m4 b/m4/ax_code_coverage.m4 new file mode 100644 index 00000000..6d083193 --- /dev/null +++ b/m4/ax_code_coverage.m4 @@ -0,0 +1,272 @@ +# =========================================================================== +# https://www.gnu.org/software/autoconf-archive/ax_code_coverage.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_CODE_COVERAGE() +# +# DESCRIPTION +# +# Defines CODE_COVERAGE_CPPFLAGS, CODE_COVERAGE_CFLAGS, +# CODE_COVERAGE_CXXFLAGS and CODE_COVERAGE_LIBS which should be included +# in the CPPFLAGS, CFLAGS CXXFLAGS and LIBS/LIBADD variables of every +# build target (program or library) which should be built with code +# coverage support. Also add rules using AX_ADD_AM_MACRO_STATIC; and +# $enable_code_coverage which can be used in subsequent configure output. +# CODE_COVERAGE_ENABLED is defined and substituted, and corresponds to the +# value of the --enable-code-coverage option, which defaults to being +# disabled. +# +# Test also for gcov program and create GCOV variable that could be +# substituted. +# +# Note that all optimization flags in CFLAGS must be disabled when code +# coverage is enabled. +# +# Usage example: +# +# configure.ac: +# +# AX_CODE_COVERAGE +# +# Makefile.am: +# +# include $(top_srcdir)/aminclude_static.am +# +# my_program_LIBS = ... $(CODE_COVERAGE_LIBS) ... +# my_program_CPPFLAGS = ... $(CODE_COVERAGE_CPPFLAGS) ... +# my_program_CFLAGS = ... $(CODE_COVERAGE_CFLAGS) ... +# my_program_CXXFLAGS = ... $(CODE_COVERAGE_CXXFLAGS) ... +# +# clean-local: code-coverage-clean +# distclean-local: code-coverage-dist-clean +# +# This results in a "check-code-coverage" rule being added to any +# Makefile.am which do "include $(top_srcdir)/aminclude_static.am" +# (assuming the module has been configured with --enable-code-coverage). +# Running `make check-code-coverage` in that directory will run the +# module's test suite (`make check`) and build a code coverage report +# detailing the code which was touched, then print the URI for the report. +# +# This code was derived from Makefile.decl in GLib, originally licensed +# under LGPLv2.1+. +# +# LICENSE +# +# Copyright (c) 2012, 2016 Philip Withnall +# Copyright (c) 2012 Xan Lopez +# Copyright (c) 2012 Christian Persch +# Copyright (c) 2012 Paolo Borelli +# Copyright (c) 2012 Dan Winship +# Copyright (c) 2015,2018 Bastien ROUCARIES +# +# This library is free software; you can redistribute it and/or modify it +# under the terms of the GNU Lesser General Public License as published by +# the Free Software Foundation; either version 2.1 of the License, or (at +# your option) any later version. +# +# This library is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser +# General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public License +# along with this program. If not, see . + +#serial 33 + +m4_define(_AX_CODE_COVERAGE_RULES,[ +AX_ADD_AM_MACRO_STATIC([ +# Code coverage +# +# Optional: +# - CODE_COVERAGE_DIRECTORY: Top-level directory for code coverage reporting. +# Multiple directories may be specified, separated by whitespace. +# (Default: \$(top_builddir)) +# - CODE_COVERAGE_OUTPUT_FILE: Filename and path for the .info file generated +# by lcov for code coverage. (Default: +# \$(PACKAGE_NAME)-\$(PACKAGE_VERSION)-coverage.info) +# - CODE_COVERAGE_OUTPUT_DIRECTORY: Directory for generated code coverage +# reports to be created. (Default: +# \$(PACKAGE_NAME)-\$(PACKAGE_VERSION)-coverage) +# - CODE_COVERAGE_BRANCH_COVERAGE: Set to 1 to enforce branch coverage, +# set to 0 to disable it and leave empty to stay with the default. +# (Default: empty) +# - CODE_COVERAGE_LCOV_SHOPTS_DEFAULT: Extra options shared between both lcov +# instances. (Default: based on $CODE_COVERAGE_BRANCH_COVERAGE) +# - CODE_COVERAGE_LCOV_SHOPTS: Extra options to shared between both lcov +# instances. (Default: $CODE_COVERAGE_LCOV_SHOPTS_DEFAULT) +# - CODE_COVERAGE_LCOV_OPTIONS_GCOVPATH: --gcov-tool pathtogcov +# - CODE_COVERAGE_LCOV_OPTIONS_DEFAULT: Extra options to pass to the +# collecting lcov instance. (Default: $CODE_COVERAGE_LCOV_OPTIONS_GCOVPATH) +# - CODE_COVERAGE_LCOV_OPTIONS: Extra options to pass to the collecting lcov +# instance. (Default: $CODE_COVERAGE_LCOV_OPTIONS_DEFAULT) +# - CODE_COVERAGE_LCOV_RMOPTS_DEFAULT: Extra options to pass to the filtering +# lcov instance. (Default: empty) +# - CODE_COVERAGE_LCOV_RMOPTS: Extra options to pass to the filtering lcov +# instance. (Default: $CODE_COVERAGE_LCOV_RMOPTS_DEFAULT) +# - CODE_COVERAGE_GENHTML_OPTIONS_DEFAULT: Extra options to pass to the +# genhtml instance. (Default: based on $CODE_COVERAGE_BRANCH_COVERAGE) +# - CODE_COVERAGE_GENHTML_OPTIONS: Extra options to pass to the genhtml +# instance. (Default: $CODE_COVERAGE_GENHTML_OPTIONS_DEFAULT) +# - CODE_COVERAGE_IGNORE_PATTERN: Extra glob pattern of files to ignore +# +# The generated report will be titled using the \$(PACKAGE_NAME) and +# \$(PACKAGE_VERSION). In order to add the current git hash to the title, +# use the git-version-gen script, available online. +# Optional variables +# run only on top dir +if CODE_COVERAGE_ENABLED + ifeq (\$(abs_builddir), \$(abs_top_builddir)) +CODE_COVERAGE_DIRECTORY ?= \$(top_builddir) +CODE_COVERAGE_OUTPUT_FILE ?= \$(PACKAGE_NAME)-\$(PACKAGE_VERSION)-coverage.info +CODE_COVERAGE_OUTPUT_DIRECTORY ?= \$(PACKAGE_NAME)-\$(PACKAGE_VERSION)-coverage + +CODE_COVERAGE_BRANCH_COVERAGE ?= +CODE_COVERAGE_LCOV_SHOPTS_DEFAULT ?= \$(if \$(CODE_COVERAGE_BRANCH_COVERAGE),\ +--rc lcov_branch_coverage=\$(CODE_COVERAGE_BRANCH_COVERAGE)) +CODE_COVERAGE_LCOV_SHOPTS ?= \$(CODE_COVERAGE_LCOV_SHOPTS_DEFAULT) +CODE_COVERAGE_LCOV_OPTIONS_GCOVPATH ?= --gcov-tool \"\$(GCOV)\" +CODE_COVERAGE_LCOV_OPTIONS_DEFAULT ?= \$(CODE_COVERAGE_LCOV_OPTIONS_GCOVPATH) +CODE_COVERAGE_LCOV_OPTIONS ?= \$(CODE_COVERAGE_LCOV_OPTIONS_DEFAULT) +CODE_COVERAGE_LCOV_RMOPTS_DEFAULT ?= +CODE_COVERAGE_LCOV_RMOPTS ?= \$(CODE_COVERAGE_LCOV_RMOPTS_DEFAULT) +CODE_COVERAGE_GENHTML_OPTIONS_DEFAULT ?=\ +\$(if \$(CODE_COVERAGE_BRANCH_COVERAGE),\ +--rc genhtml_branch_coverage=\$(CODE_COVERAGE_BRANCH_COVERAGE)) +CODE_COVERAGE_GENHTML_OPTIONS ?= \$(CODE_COVERAGE_GENHTML_OPTIONS_DEFAULT) +CODE_COVERAGE_IGNORE_PATTERN ?= + +GITIGNOREFILES = \$(GITIGNOREFILES) \$(CODE_COVERAGE_OUTPUT_FILE) \$(CODE_COVERAGE_OUTPUT_DIRECTORY) +code_coverage_v_lcov_cap = \$(code_coverage_v_lcov_cap_\$(V)) +code_coverage_v_lcov_cap_ = \$(code_coverage_v_lcov_cap_\$(AM_DEFAULT_VERBOSITY)) +code_coverage_v_lcov_cap_0 = @echo \" LCOV --capture\" \$(CODE_COVERAGE_OUTPUT_FILE); +code_coverage_v_lcov_ign = \$(code_coverage_v_lcov_ign_\$(V)) +code_coverage_v_lcov_ign_ = \$(code_coverage_v_lcov_ign_\$(AM_DEFAULT_VERBOSITY)) +code_coverage_v_lcov_ign_0 = @echo \" LCOV --remove /tmp/*\" \$(CODE_COVERAGE_IGNORE_PATTERN); +code_coverage_v_genhtml = \$(code_coverage_v_genhtml_\$(V)) +code_coverage_v_genhtml_ = \$(code_coverage_v_genhtml_\$(AM_DEFAULT_VERBOSITY)) +code_coverage_v_genhtml_0 = @echo \" GEN \" \"\$(CODE_COVERAGE_OUTPUT_DIRECTORY)\"; +code_coverage_quiet = \$(code_coverage_quiet_\$(V)) +code_coverage_quiet_ = \$(code_coverage_quiet_\$(AM_DEFAULT_VERBOSITY)) +code_coverage_quiet_0 = --quiet + +# sanitizes the test-name: replaces with underscores: dashes and dots +code_coverage_sanitize = \$(subst -,_,\$(subst .,_,\$(1))) + +# Use recursive makes in order to ignore errors during check +check-code-coverage: + -\$(AM_V_at)\$(MAKE) \$(AM_MAKEFLAGS) -k check + \$(AM_V_at)\$(MAKE) \$(AM_MAKEFLAGS) code-coverage-capture + +# Capture code coverage data +code-coverage-capture: code-coverage-capture-hook + \$(code_coverage_v_lcov_cap)\$(LCOV) \$(code_coverage_quiet) \$(addprefix --directory ,\$(CODE_COVERAGE_DIRECTORY)) --capture --output-file \"\$(CODE_COVERAGE_OUTPUT_FILE).tmp\" --test-name \"\$(call code_coverage_sanitize,\$(PACKAGE_NAME)-\$(PACKAGE_VERSION))\" --no-checksum --compat-libtool \$(CODE_COVERAGE_LCOV_SHOPTS) \$(CODE_COVERAGE_LCOV_OPTIONS) + \$(code_coverage_v_lcov_ign)\$(LCOV) \$(code_coverage_quiet) \$(addprefix --directory ,\$(CODE_COVERAGE_DIRECTORY)) --remove \"\$(CODE_COVERAGE_OUTPUT_FILE).tmp\" \"/tmp/*\" \$(CODE_COVERAGE_IGNORE_PATTERN) --output-file \"\$(CODE_COVERAGE_OUTPUT_FILE)\" \$(CODE_COVERAGE_LCOV_SHOPTS) \$(CODE_COVERAGE_LCOV_RMOPTS) + -@rm -f \"\$(CODE_COVERAGE_OUTPUT_FILE).tmp\" + \$(code_coverage_v_genhtml)LANG=C \$(GENHTML) \$(code_coverage_quiet) \$(addprefix --prefix ,\$(CODE_COVERAGE_DIRECTORY)) --output-directory \"\$(CODE_COVERAGE_OUTPUT_DIRECTORY)\" --title \"\$(PACKAGE_NAME)-\$(PACKAGE_VERSION) Code Coverage\" --legend --show-details \"\$(CODE_COVERAGE_OUTPUT_FILE)\" \$(CODE_COVERAGE_GENHTML_OPTIONS) + @echo \"file://\$(abs_builddir)/\$(CODE_COVERAGE_OUTPUT_DIRECTORY)/index.html\" + +code-coverage-clean: + -\$(LCOV) --directory \$(top_builddir) -z + -rm -rf \"\$(CODE_COVERAGE_OUTPUT_FILE)\" \"\$(CODE_COVERAGE_OUTPUT_FILE).tmp\" \"\$(CODE_COVERAGE_OUTPUT_DIRECTORY)\" + -find . \\( -name \"*.gcda\" -o -name \"*.gcno\" -o -name \"*.gcov\" \\) -delete + +code-coverage-dist-clean: + +A][M_DISTCHECK_CONFIGURE_FLAGS := \$(A][M_DISTCHECK_CONFIGURE_FLAGS) --disable-code-coverage + else # ifneq (\$(abs_builddir), \$(abs_top_builddir)) +check-code-coverage: + +code-coverage-capture: code-coverage-capture-hook + +code-coverage-clean: + +code-coverage-dist-clean: + endif # ifeq (\$(abs_builddir), \$(abs_top_builddir)) +else #! CODE_COVERAGE_ENABLED +# Use recursive makes in order to ignore errors during check +check-code-coverage: + @echo \"Need to reconfigure with --enable-code-coverage\" +# Capture code coverage data +code-coverage-capture: code-coverage-capture-hook + @echo \"Need to reconfigure with --enable-code-coverage\" + +code-coverage-clean: + +code-coverage-dist-clean: + +endif #CODE_COVERAGE_ENABLED +# Hook rule executed before code-coverage-capture, overridable by the user +code-coverage-capture-hook: + +.PHONY: check-code-coverage code-coverage-capture code-coverage-dist-clean code-coverage-clean code-coverage-capture-hook +]) +]) + +AC_DEFUN([_AX_CODE_COVERAGE_ENABLED],[ + AX_CHECK_GNU_MAKE([],[AC_MSG_ERROR([not using GNU make that is needed for coverage])]) + AC_REQUIRE([AX_ADD_AM_MACRO_STATIC]) + # check for gcov + AC_CHECK_TOOL([GCOV], + [$_AX_CODE_COVERAGE_GCOV_PROG_WITH], + [:]) + AS_IF([test "X$GCOV" = "X:"], + [AC_MSG_ERROR([gcov is needed to do coverage])]) + AC_SUBST([GCOV]) + + dnl Check if gcc is being used + AS_IF([ test "$GCC" = "no" ], [ + AC_MSG_ERROR([not compiling with gcc, which is required for gcov code coverage]) + ]) + + AC_CHECK_PROG([LCOV], [lcov], [lcov]) + AC_CHECK_PROG([GENHTML], [genhtml], [genhtml]) + + AS_IF([ test x"$LCOV" = x ], [ + AC_MSG_ERROR([To enable code coverage reporting you must have lcov installed]) + ]) + + AS_IF([ test x"$GENHTML" = x ], [ + AC_MSG_ERROR([Could not find genhtml from the lcov package]) + ]) + + dnl Build the code coverage flags + dnl Define CODE_COVERAGE_LDFLAGS for backwards compatibility + CODE_COVERAGE_CPPFLAGS="-DNDEBUG" + CODE_COVERAGE_CFLAGS="-O0 -g -fprofile-arcs -ftest-coverage" + CODE_COVERAGE_CXXFLAGS="-O0 -g -fprofile-arcs -ftest-coverage" + CODE_COVERAGE_LIBS="-lgcov" + + AC_SUBST([CODE_COVERAGE_CPPFLAGS]) + AC_SUBST([CODE_COVERAGE_CFLAGS]) + AC_SUBST([CODE_COVERAGE_CXXFLAGS]) + AC_SUBST([CODE_COVERAGE_LIBS]) +]) + +AC_DEFUN([AX_CODE_COVERAGE],[ + dnl Check for --enable-code-coverage + + # allow to override gcov location + AC_ARG_WITH([gcov], + [AS_HELP_STRING([--with-gcov[=GCOV]], [use given GCOV for coverage (GCOV=gcov).])], + [_AX_CODE_COVERAGE_GCOV_PROG_WITH=$with_gcov], + [_AX_CODE_COVERAGE_GCOV_PROG_WITH=gcov]) + + AC_MSG_CHECKING([whether to build with code coverage support]) + AC_ARG_ENABLE([code-coverage], + AS_HELP_STRING([--enable-code-coverage], + [Whether to enable code coverage support]),, + enable_code_coverage=no) + + AM_CONDITIONAL([CODE_COVERAGE_ENABLED], [test "x$enable_code_coverage" = xyes]) + AC_SUBST([CODE_COVERAGE_ENABLED], [$enable_code_coverage]) + AC_MSG_RESULT($enable_code_coverage) + + AS_IF([ test "x$enable_code_coverage" = xyes ], [ + _AX_CODE_COVERAGE_ENABLED + ]) + + _AX_CODE_COVERAGE_RULES +]) diff --git a/m4/ax_compiler_flags.m4 b/m4/ax_compiler_flags.m4 new file mode 100644 index 00000000..ddb0456c --- /dev/null +++ b/m4/ax_compiler_flags.m4 @@ -0,0 +1,158 @@ +# =========================================================================== +# https://www.gnu.org/software/autoconf-archive/ax_compiler_flags.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_COMPILER_FLAGS([CFLAGS-VARIABLE], [LDFLAGS-VARIABLE], [IS-RELEASE], [EXTRA-BASE-CFLAGS], [EXTRA-YES-CFLAGS], [UNUSED], [UNUSED], [UNUSED], [EXTRA-BASE-LDFLAGS], [EXTRA-YES-LDFLAGS], [UNUSED], [UNUSED], [UNUSED]) +# +# DESCRIPTION +# +# Check for the presence of an --enable-compile-warnings option to +# configure, defaulting to "error" in normal operation, or "yes" if +# IS-RELEASE is equal to "yes". Return the value in the variable +# $ax_enable_compile_warnings. +# +# Depending on the value of --enable-compile-warnings, different compiler +# warnings are checked to see if they work with the current compiler and, +# if so, are appended to CFLAGS-VARIABLE and LDFLAGS-VARIABLE. This +# allows a consistent set of baseline compiler warnings to be used across +# a code base, irrespective of any warnings enabled locally by individual +# developers. By standardising the warnings used by all developers of a +# project, the project can commit to a zero-warnings policy, using -Werror +# to prevent compilation if new warnings are introduced. This makes +# catching bugs which are flagged by warnings a lot easier. +# +# By providing a consistent --enable-compile-warnings argument across all +# projects using this macro, continuous integration systems can easily be +# configured the same for all projects. Automated systems or build +# systems aimed at beginners may want to pass the --disable-Werror +# argument to unconditionally prevent warnings being fatal. +# +# --enable-compile-warnings can take the values: +# +# * no: Base compiler warnings only; not even -Wall. +# * yes: The above, plus a broad range of useful warnings. +# * error: The above, plus -Werror so that all warnings are fatal. +# Use --disable-Werror to override this and disable fatal +# warnings. +# +# The set of base and enabled flags can be augmented using the +# EXTRA-*-CFLAGS and EXTRA-*-LDFLAGS variables, which are tested and +# appended to the output variable if --enable-compile-warnings is not +# "no". Flags should not be disabled using these arguments, as the entire +# point of AX_COMPILER_FLAGS is to enforce a consistent set of useful +# compiler warnings on code, using warnings which have been chosen for low +# false positive rates. If a compiler emits false positives for a +# warning, a #pragma should be used in the code to disable the warning +# locally. See: +# +# https://gcc.gnu.org/onlinedocs/gcc-4.9.2/gcc/Diagnostic-Pragmas.html#Diagnostic-Pragmas +# +# The EXTRA-* variables should only be used to supply extra warning flags, +# and not general purpose compiler flags, as they are controlled by +# configure options such as --disable-Werror. +# +# IS-RELEASE can be used to disable -Werror when making a release, which +# is useful for those hairy moments when you just want to get the release +# done as quickly as possible. Set it to "yes" to disable -Werror. By +# default, it uses the value of $ax_is_release, so if you are using the +# AX_IS_RELEASE macro, there is no need to pass this parameter. For +# example: +# +# AX_IS_RELEASE([git-directory]) +# AX_COMPILER_FLAGS() +# +# CFLAGS-VARIABLE defaults to WARN_CFLAGS, and LDFLAGS-VARIABLE defaults +# to WARN_LDFLAGS. Both variables are AC_SUBST-ed by this macro, but must +# be manually added to the CFLAGS and LDFLAGS variables for each target in +# the code base. +# +# If C++ language support is enabled with AC_PROG_CXX, which must occur +# before this macro in configure.ac, warning flags for the C++ compiler +# are AC_SUBST-ed as WARN_CXXFLAGS, and must be manually added to the +# CXXFLAGS variables for each target in the code base. EXTRA-*-CFLAGS can +# be used to augment the base and enabled flags. +# +# Warning flags for g-ir-scanner (from GObject Introspection) are +# AC_SUBST-ed as WARN_SCANNERFLAGS. This variable must be manually added +# to the SCANNERFLAGS variable for each GIR target in the code base. If +# extra g-ir-scanner flags need to be enabled, the AX_COMPILER_FLAGS_GIR +# macro must be invoked manually. +# +# AX_COMPILER_FLAGS may add support for other tools in future, in addition +# to the compiler and linker. No extra EXTRA-* variables will be added +# for those tools, and all extra support will still use the single +# --enable-compile-warnings configure option. For finer grained control +# over the flags for individual tools, use AX_COMPILER_FLAGS_CFLAGS, +# AX_COMPILER_FLAGS_LDFLAGS and AX_COMPILER_FLAGS_* for new tools. +# +# The UNUSED variables date from a previous version of this macro, and are +# automatically appended to the preceding non-UNUSED variable. They should +# be left empty in new uses of the macro. +# +# LICENSE +# +# Copyright (c) 2014, 2015 Philip Withnall +# Copyright (c) 2015 David King +# +# Copying and distribution of this file, with or without modification, are +# permitted in any medium without royalty provided the copyright notice +# and this notice are preserved. This file is offered as-is, without any +# warranty. + +#serial 14 + +# _AX_COMPILER_FLAGS_LANG([LANGNAME]) +m4_defun([_AX_COMPILER_FLAGS_LANG], +[m4_ifdef([_AX_COMPILER_FLAGS_LANG_]$1[_enabled], [], + [m4_define([_AX_COMPILER_FLAGS_LANG_]$1[_enabled], [])dnl + AX_REQUIRE_DEFINED([AX_COMPILER_FLAGS_]$1[FLAGS])])dnl +]) + +AC_DEFUN([AX_COMPILER_FLAGS],[ + # C support is enabled by default. + _AX_COMPILER_FLAGS_LANG([C]) + # Only enable C++ support if AC_PROG_CXX is called. The redefinition of + # AC_PROG_CXX is so that a fatal error is emitted if this macro is called + # before AC_PROG_CXX, which would otherwise cause no C++ warnings to be + # checked. + AC_PROVIDE_IFELSE([AC_PROG_CXX], + [_AX_COMPILER_FLAGS_LANG([CXX])], + [m4_define([AC_PROG_CXX], defn([AC_PROG_CXX])[_AX_COMPILER_FLAGS_LANG([CXX])])]) + AX_REQUIRE_DEFINED([AX_COMPILER_FLAGS_LDFLAGS]) + + # Default value for IS-RELEASE is $ax_is_release + ax_compiler_flags_is_release=m4_tolower(m4_normalize(ifelse([$3],, + [$ax_is_release], + [$3]))) + + AC_ARG_ENABLE([compile-warnings], + AS_HELP_STRING([--enable-compile-warnings=@<:@no/yes/error@:>@], + [Enable compiler warnings and errors]),, + [AS_IF([test "$ax_compiler_flags_is_release" = "yes"], + [enable_compile_warnings="yes"], + [enable_compile_warnings="error"])]) + AC_ARG_ENABLE([Werror], + AS_HELP_STRING([--disable-Werror], + [Unconditionally make all compiler warnings non-fatal]),, + [enable_Werror=maybe]) + + # Return the user's chosen warning level + AS_IF([test "$enable_Werror" = "no" -a \ + "$enable_compile_warnings" = "error"],[ + enable_compile_warnings="yes" + ]) + + ax_enable_compile_warnings=$enable_compile_warnings + + AX_COMPILER_FLAGS_CFLAGS([$1],[$ax_compiler_flags_is_release], + [$4],[$5 $6 $7 $8]) + m4_ifdef([_AX_COMPILER_FLAGS_LANG_CXX_enabled], + [AX_COMPILER_FLAGS_CXXFLAGS([WARN_CXXFLAGS], + [$ax_compiler_flags_is_release], + [$4],[$5 $6 $7 $8])]) + AX_COMPILER_FLAGS_LDFLAGS([$2],[$ax_compiler_flags_is_release], + [$9],[$10 $11 $12 $13]) + AX_COMPILER_FLAGS_GIR([WARN_SCANNERFLAGS],[$ax_compiler_flags_is_release]) +])dnl AX_COMPILER_FLAGS diff --git a/m4/ax_compiler_flags_cflags.m4 b/m4/ax_compiler_flags_cflags.m4 new file mode 100644 index 00000000..916f9183 --- /dev/null +++ b/m4/ax_compiler_flags_cflags.m4 @@ -0,0 +1,161 @@ +# ============================================================================= +# https://www.gnu.org/software/autoconf-archive/ax_compiler_flags_cflags.html +# ============================================================================= +# +# SYNOPSIS +# +# AX_COMPILER_FLAGS_CFLAGS([VARIABLE], [IS-RELEASE], [EXTRA-BASE-FLAGS], [EXTRA-YES-FLAGS]) +# +# DESCRIPTION +# +# Add warning flags for the C compiler to VARIABLE, which defaults to +# WARN_CFLAGS. VARIABLE is AC_SUBST-ed by this macro, but must be +# manually added to the CFLAGS variable for each target in the code base. +# +# This macro depends on the environment set up by AX_COMPILER_FLAGS. +# Specifically, it uses the value of $ax_enable_compile_warnings to decide +# which flags to enable. +# +# LICENSE +# +# Copyright (c) 2014, 2015 Philip Withnall +# Copyright (c) 2017, 2018 Reini Urban +# +# Copying and distribution of this file, with or without modification, are +# permitted in any medium without royalty provided the copyright notice +# and this notice are preserved. This file is offered as-is, without any +# warranty. + +#serial 17 + +AC_DEFUN([AX_COMPILER_FLAGS_CFLAGS],[ + AC_REQUIRE([AC_PROG_SED]) + AX_REQUIRE_DEFINED([AX_APPEND_COMPILE_FLAGS]) + AX_REQUIRE_DEFINED([AX_APPEND_FLAG]) + AX_REQUIRE_DEFINED([AX_CHECK_COMPILE_FLAG]) + + # Variable names + m4_define([ax_warn_cflags_variable], + [m4_normalize(ifelse([$1],,[WARN_CFLAGS],[$1]))]) + + AC_LANG_PUSH([C]) + + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([ + [#ifndef __cplusplus + #error "no C++" + #endif]])], + [ax_compiler_cxx=yes;], + [ax_compiler_cxx=no;]) + + # Always pass -Werror=unknown-warning-option to get Clang to fail on bad + # flags, otherwise they are always appended to the warn_cflags variable, and + # Clang warns on them for every compilation unit. + # If this is passed to GCC, it will explode, so the flag must be enabled + # conditionally. + AX_CHECK_COMPILE_FLAG([-Werror=unknown-warning-option],[ + ax_compiler_flags_test="-Werror=unknown-warning-option" + ],[ + ax_compiler_flags_test="" + ]) + + # Check that -Wno-suggest-attribute=format is supported + AX_CHECK_COMPILE_FLAG([-Wno-suggest-attribute=format],[ + ax_compiler_no_suggest_attribute_flags="-Wno-suggest-attribute=format" + ],[ + ax_compiler_no_suggest_attribute_flags="" + ]) + + # Base flags + AX_APPEND_COMPILE_FLAGS([ dnl + -fno-strict-aliasing dnl + $3 dnl + ],ax_warn_cflags_variable,[$ax_compiler_flags_test]) + + AS_IF([test "$ax_enable_compile_warnings" != "no"],[ + if test "$ax_compiler_cxx" = "no" ; then + # C-only flags. Warn in C++ + AX_APPEND_COMPILE_FLAGS([ dnl + -Wnested-externs dnl + -Wmissing-prototypes dnl + -Wstrict-prototypes dnl + -Wdeclaration-after-statement dnl + -Wimplicit-function-declaration dnl + -Wold-style-definition dnl + -Wjump-misses-init dnl + ],ax_warn_cflags_variable,[$ax_compiler_flags_test]) + fi + + # "yes" flags + AX_APPEND_COMPILE_FLAGS([ dnl + -Wall dnl + -Wextra dnl + -Wundef dnl + -Wwrite-strings dnl + -Wpointer-arith dnl + -Wmissing-declarations dnl + -Wredundant-decls dnl + -Wno-unused-parameter dnl + -Wno-missing-field-initializers dnl + -Wformat=2 dnl + -Wcast-align dnl + -Wformat-nonliteral dnl + -Wformat-security dnl + -Wsign-compare dnl + -Wstrict-aliasing dnl + -Wshadow dnl + -Winline dnl + -Wpacked dnl + -Wmissing-format-attribute dnl + -Wmissing-noreturn dnl + -Winit-self dnl + -Wredundant-decls dnl + -Wmissing-include-dirs dnl + -Wunused-but-set-variable dnl + -Warray-bounds dnl + -Wreturn-type dnl + -Wswitch-enum dnl + -Wswitch-default dnl + -Wduplicated-cond dnl + -Wduplicated-branches dnl + -Wlogical-op dnl + -Wrestrict dnl + -Wnull-dereference dnl + -Wdouble-promotion dnl + $4 dnl + $5 dnl + $6 dnl + $7 dnl + ],ax_warn_cflags_variable,[$ax_compiler_flags_test]) + ]) + AS_IF([test "$ax_enable_compile_warnings" = "error"],[ + # "error" flags; -Werror has to be appended unconditionally because + # it's not possible to test for + # + # suggest-attribute=format is disabled because it gives too many false + # positives + AX_APPEND_FLAG([-Werror],ax_warn_cflags_variable) + + AX_APPEND_COMPILE_FLAGS([ dnl + [$ax_compiler_no_suggest_attribute_flags] dnl + ],ax_warn_cflags_variable,[$ax_compiler_flags_test]) + ]) + + # In the flags below, when disabling specific flags, always add *both* + # -Wno-foo and -Wno-error=foo. This fixes the situation where (for example) + # we enable -Werror, disable a flag, and a build bot passes CFLAGS=-Wall, + # which effectively turns that flag back on again as an error. + for flag in $ax_warn_cflags_variable; do + AS_CASE([$flag], + [-Wno-*=*],[], + [-Wno-*],[ + AX_APPEND_COMPILE_FLAGS([-Wno-error=$(AS_ECHO([$flag]) | $SED 's/^-Wno-//')], + ax_warn_cflags_variable, + [$ax_compiler_flags_test]) + ]) + done + + AC_LANG_POP([C]) + + # Substitute the variables + AC_SUBST(ax_warn_cflags_variable) +])dnl AX_COMPILER_FLAGS diff --git a/m4/ax_compiler_flags_cxxflags.m4 b/m4/ax_compiler_flags_cxxflags.m4 new file mode 100644 index 00000000..3067d9b9 --- /dev/null +++ b/m4/ax_compiler_flags_cxxflags.m4 @@ -0,0 +1,136 @@ +# =============================================================================== +# https://www.gnu.org/software/autoconf-archive/ax_compiler_flags_cxxflags.html +# =============================================================================== +# +# SYNOPSIS +# +# AX_COMPILER_FLAGS_CXXFLAGS([VARIABLE], [IS-RELEASE], [EXTRA-BASE-FLAGS], [EXTRA-YES-FLAGS]) +# +# DESCRIPTION +# +# Add warning flags for the C++ compiler to VARIABLE, which defaults to +# WARN_CXXFLAGS. VARIABLE is AC_SUBST-ed by this macro, but must be +# manually added to the CXXFLAGS variable for each target in the code +# base. +# +# This macro depends on the environment set up by AX_COMPILER_FLAGS. +# Specifically, it uses the value of $ax_enable_compile_warnings to decide +# which flags to enable. +# +# LICENSE +# +# Copyright (c) 2015 David King +# +# Copying and distribution of this file, with or without modification, are +# permitted in any medium without royalty provided the copyright notice +# and this notice are preserved. This file is offered as-is, without any +# warranty. + +#serial 10 + +AC_DEFUN([AX_COMPILER_FLAGS_CXXFLAGS],[ + AC_REQUIRE([AC_PROG_SED]) + AX_REQUIRE_DEFINED([AX_APPEND_COMPILE_FLAGS]) + AX_REQUIRE_DEFINED([AX_APPEND_FLAG]) + AX_REQUIRE_DEFINED([AX_CHECK_COMPILE_FLAG]) + + # Variable names + m4_define([ax_warn_cxxflags_variable], + [m4_normalize(ifelse([$1],,[WARN_CXXFLAGS],[$1]))]) + + AC_LANG_PUSH([C++]) + + # Always pass -Werror=unknown-warning-option to get Clang to fail on bad + # flags, otherwise they are always appended to the warn_cxxflags variable, + # and Clang warns on them for every compilation unit. + # If this is passed to GCC, it will explode, so the flag must be enabled + # conditionally. + AX_CHECK_COMPILE_FLAG([-Werror=unknown-warning-option],[ + ax_compiler_flags_test="-Werror=unknown-warning-option" + ],[ + ax_compiler_flags_test="" + ]) + + # Check that -Wno-suggest-attribute=format is supported + AX_CHECK_COMPILE_FLAG([-Wno-suggest-attribute=format],[ + ax_compiler_no_suggest_attribute_flags="-Wno-suggest-attribute=format" + ],[ + ax_compiler_no_suggest_attribute_flags="" + ]) + + # Base flags + AX_APPEND_COMPILE_FLAGS([ dnl + -fno-strict-aliasing dnl + $3 dnl + ],ax_warn_cxxflags_variable,[$ax_compiler_flags_test]) + + AS_IF([test "$ax_enable_compile_warnings" != "no"],[ + # "yes" flags + AX_APPEND_COMPILE_FLAGS([ dnl + -Wall dnl + -Wextra dnl + -Wundef dnl + -Wwrite-strings dnl + -Wpointer-arith dnl + -Wmissing-declarations dnl + -Wredundant-decls dnl + -Wno-unused-parameter dnl + -Wno-missing-field-initializers dnl + -Wformat=2 dnl + -Wcast-align dnl + -Wformat-nonliteral dnl + -Wformat-security dnl + -Wsign-compare dnl + -Wstrict-aliasing dnl + -Wshadow dnl + -Winline dnl + -Wpacked dnl + -Wmissing-format-attribute dnl + -Wmissing-noreturn dnl + -Winit-self dnl + -Wredundant-decls dnl + -Wmissing-include-dirs dnl + -Wunused-but-set-variable dnl + -Warray-bounds dnl + -Wreturn-type dnl + -Wno-overloaded-virtual dnl + -Wswitch-enum dnl + -Wswitch-default dnl + $4 dnl + $5 dnl + $6 dnl + $7 dnl + ],ax_warn_cxxflags_variable,[$ax_compiler_flags_test]) + ]) + AS_IF([test "$ax_enable_compile_warnings" = "error"],[ + # "error" flags; -Werror has to be appended unconditionally because + # it's not possible to test for + # + # suggest-attribute=format is disabled because it gives too many false + # positives + AX_APPEND_FLAG([-Werror],ax_warn_cxxflags_variable) + + AX_APPEND_COMPILE_FLAGS([ dnl + [$ax_compiler_no_suggest_attribute_flags] dnl + ],ax_warn_cxxflags_variable,[$ax_compiler_flags_test]) + ]) + + # In the flags below, when disabling specific flags, always add *both* + # -Wno-foo and -Wno-error=foo. This fixes the situation where (for example) + # we enable -Werror, disable a flag, and a build bot passes CXXFLAGS=-Wall, + # which effectively turns that flag back on again as an error. + for flag in $ax_warn_cxxflags_variable; do + AS_CASE([$flag], + [-Wno-*=*],[], + [-Wno-*],[ + AX_APPEND_COMPILE_FLAGS([-Wno-error=$(AS_ECHO([$flag]) | $SED 's/^-Wno-//')], + ax_warn_cxxflags_variable, + [$ax_compiler_flags_test]) + ]) + done + + AC_LANG_POP([C++]) + + # Substitute the variables + AC_SUBST(ax_warn_cxxflags_variable) +])dnl AX_COMPILER_FLAGS_CXXFLAGS diff --git a/m4/ax_compiler_flags_gir.m4 b/m4/ax_compiler_flags_gir.m4 new file mode 100644 index 00000000..5b4924a2 --- /dev/null +++ b/m4/ax_compiler_flags_gir.m4 @@ -0,0 +1,60 @@ +# =========================================================================== +# https://www.gnu.org/software/autoconf-archive/ax_compiler_flags_gir.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_COMPILER_FLAGS_GIR([VARIABLE], [IS-RELEASE], [EXTRA-BASE-FLAGS], [EXTRA-YES-FLAGS]) +# +# DESCRIPTION +# +# Add warning flags for the g-ir-scanner (from GObject Introspection) to +# VARIABLE, which defaults to WARN_SCANNERFLAGS. VARIABLE is AC_SUBST-ed +# by this macro, but must be manually added to the SCANNERFLAGS variable +# for each GIR target in the code base. +# +# This macro depends on the environment set up by AX_COMPILER_FLAGS. +# Specifically, it uses the value of $ax_enable_compile_warnings to decide +# which flags to enable. +# +# LICENSE +# +# Copyright (c) 2015 Philip Withnall +# +# Copying and distribution of this file, with or without modification, are +# permitted in any medium without royalty provided the copyright notice +# and this notice are preserved. This file is offered as-is, without any +# warranty. + +#serial 6 + +AC_DEFUN([AX_COMPILER_FLAGS_GIR],[ + AX_REQUIRE_DEFINED([AX_APPEND_FLAG]) + + # Variable names + m4_define([ax_warn_scannerflags_variable], + [m4_normalize(ifelse([$1],,[WARN_SCANNERFLAGS],[$1]))]) + + # Base flags + AX_APPEND_FLAG([$3],ax_warn_scannerflags_variable) + + AS_IF([test "$ax_enable_compile_warnings" != "no"],[ + # "yes" flags + AX_APPEND_FLAG([ dnl + --warn-all dnl + $4 dnl + $5 dnl + $6 dnl + $7 dnl + ],ax_warn_scannerflags_variable) + ]) + AS_IF([test "$ax_enable_compile_warnings" = "error"],[ + # "error" flags + AX_APPEND_FLAG([ dnl + --warn-error dnl + ],ax_warn_scannerflags_variable) + ]) + + # Substitute the variables + AC_SUBST(ax_warn_scannerflags_variable) +])dnl AX_COMPILER_FLAGS diff --git a/m4/ax_compiler_flags_ldflags.m4 b/m4/ax_compiler_flags_ldflags.m4 new file mode 100644 index 00000000..976d1198 --- /dev/null +++ b/m4/ax_compiler_flags_ldflags.m4 @@ -0,0 +1,111 @@ +# ============================================================================== +# https://www.gnu.org/software/autoconf-archive/ax_compiler_flags_ldflags.html +# ============================================================================== +# +# SYNOPSIS +# +# AX_COMPILER_FLAGS_LDFLAGS([VARIABLE], [IS-RELEASE], [EXTRA-BASE-FLAGS], [EXTRA-YES-FLAGS]) +# +# DESCRIPTION +# +# Add warning flags for the linker to VARIABLE, which defaults to +# WARN_LDFLAGS. VARIABLE is AC_SUBST-ed by this macro, but must be +# manually added to the LDFLAGS variable for each target in the code base. +# +# This macro depends on the environment set up by AX_COMPILER_FLAGS. +# Specifically, it uses the value of $ax_enable_compile_warnings to decide +# which flags to enable. +# +# LICENSE +# +# Copyright (c) 2014, 2015 Philip Withnall +# Copyright (c) 2017, 2018 Reini Urban +# +# Copying and distribution of this file, with or without modification, are +# permitted in any medium without royalty provided the copyright notice +# and this notice are preserved. This file is offered as-is, without any +# warranty. + +#serial 9 + +AC_DEFUN([AX_COMPILER_FLAGS_LDFLAGS],[ + AX_REQUIRE_DEFINED([AX_APPEND_LINK_FLAGS]) + AX_REQUIRE_DEFINED([AX_APPEND_FLAG]) + AX_REQUIRE_DEFINED([AX_CHECK_COMPILE_FLAG]) + AX_REQUIRE_DEFINED([AX_CHECK_LINK_FLAG]) + + # Variable names + m4_define([ax_warn_ldflags_variable], + [m4_normalize(ifelse([$1],,[WARN_LDFLAGS],[$1]))]) + + # Always pass -Werror=unknown-warning-option to get Clang to fail on bad + # flags, otherwise they are always appended to the warn_ldflags variable, + # and Clang warns on them for every compilation unit. + # If this is passed to GCC, it will explode, so the flag must be enabled + # conditionally. + AX_CHECK_COMPILE_FLAG([-Werror=unknown-warning-option],[ + ax_compiler_flags_test="-Werror=unknown-warning-option" + ],[ + ax_compiler_flags_test="" + ]) + + AX_CHECK_LINK_FLAG([-Wl,--as-needed], [ + AX_APPEND_LINK_FLAGS([-Wl,--as-needed], + [AM_LDFLAGS],[$ax_compiler_flags_test]) + ]) + AX_CHECK_LINK_FLAG([-Wl,-z,relro], [ + AX_APPEND_LINK_FLAGS([-Wl,-z,relro], + [AM_LDFLAGS],[$ax_compiler_flags_test]) + ]) + AX_CHECK_LINK_FLAG([-Wl,-z,now], [ + AX_APPEND_LINK_FLAGS([-Wl,-z,now], + [AM_LDFLAGS],[$ax_compiler_flags_test]) + ]) + AX_CHECK_LINK_FLAG([-Wl,-z,noexecstack], [ + AX_APPEND_LINK_FLAGS([-Wl,-z,noexecstack], + [AM_LDFLAGS],[$ax_compiler_flags_test]) + ]) + # textonly, retpolineplt not yet + + # macOS and cygwin linker do not have --as-needed + AX_CHECK_LINK_FLAG([-Wl,--no-as-needed], [ + ax_compiler_flags_as_needed_option="-Wl,--no-as-needed" + ], [ + ax_compiler_flags_as_needed_option="" + ]) + + # macOS linker speaks with a different accent + ax_compiler_flags_fatal_warnings_option="" + AX_CHECK_LINK_FLAG([-Wl,--fatal-warnings], [ + ax_compiler_flags_fatal_warnings_option="-Wl,--fatal-warnings" + ]) + AX_CHECK_LINK_FLAG([-Wl,-fatal_warnings], [ + ax_compiler_flags_fatal_warnings_option="-Wl,-fatal_warnings" + ]) + + # Base flags + AX_APPEND_LINK_FLAGS([ dnl + $ax_compiler_flags_as_needed_option dnl + $3 dnl + ],ax_warn_ldflags_variable,[$ax_compiler_flags_test]) + + AS_IF([test "$ax_enable_compile_warnings" != "no"],[ + # "yes" flags + AX_APPEND_LINK_FLAGS([$4 $5 $6 $7], + ax_warn_ldflags_variable, + [$ax_compiler_flags_test]) + ]) + AS_IF([test "$ax_enable_compile_warnings" = "error"],[ + # "error" flags; -Werror has to be appended unconditionally because + # it's not possible to test for + # + # suggest-attribute=format is disabled because it gives too many false + # positives + AX_APPEND_LINK_FLAGS([ dnl + $ax_compiler_flags_fatal_warnings_option dnl + ],ax_warn_ldflags_variable,[$ax_compiler_flags_test]) + ]) + + # Substitute the variables + AC_SUBST(ax_warn_ldflags_variable) +])dnl AX_COMPILER_FLAGS diff --git a/m4/ax_cxx_compile_stdcxx.m4 b/m4/ax_cxx_compile_stdcxx.m4 index 5032bba8..9e9eaeda 100644 --- a/m4/ax_cxx_compile_stdcxx.m4 +++ b/m4/ax_cxx_compile_stdcxx.m4 @@ -33,19 +33,18 @@ # Copyright (c) 2014, 2015 Google Inc.; contributed by Alexey Sokolov # Copyright (c) 2015 Paul Norman # Copyright (c) 2015 Moritz Klammler -# Copyright (c) 2016 Krzesimir Nowak +# Copyright (c) 2016, 2018 Krzesimir Nowak # # Copying and distribution of this file, with or without modification, are # permitted in any medium without royalty provided the copyright notice # and this notice are preserved. This file is offered as-is, without any # warranty. -#serial 7 +#serial 10 dnl This macro is based on the code from the AX_CXX_COMPILE_STDCXX_11 macro dnl (serial version number 13). -AX_REQUIRE_DEFINED([AC_MSG_WARN]) AC_DEFUN([AX_CXX_COMPILE_STDCXX], [dnl m4_if([$1], [11], [ax_cxx_compile_alternatives="11 0x"], [$1], [14], [ax_cxx_compile_alternatives="14 1y"], @@ -61,14 +60,6 @@ AC_DEFUN([AX_CXX_COMPILE_STDCXX], [dnl [m4_fatal([invalid third argument `$3' to AX_CXX_COMPILE_STDCXX])]) AC_LANG_PUSH([C++])dnl ac_success=no - AC_CACHE_CHECK(whether $CXX supports C++$1 features by default, - ax_cv_cxx_compile_cxx$1, - [AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])], - [ax_cv_cxx_compile_cxx$1=yes], - [ax_cv_cxx_compile_cxx$1=no])]) - if test x$ax_cv_cxx_compile_cxx$1 = xyes; then - ac_success=yes - fi m4_if([$2], [noext], [], [dnl if test x$ac_success = xno; then @@ -139,7 +130,6 @@ AC_DEFUN([AX_CXX_COMPILE_STDCXX], [dnl [define if the compiler supports basic C++$1 syntax]) fi AC_SUBST(HAVE_CXX$1) - m4_if([$1], [17], [AC_MSG_WARN([C++17 is not yet standardized, so the checks may change in incompatible ways anytime])]) ]) @@ -587,20 +577,12 @@ m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_17], [[ #error "This is not a C++ compiler" -#elif __cplusplus <= 201402L +#elif __cplusplus < 201703L #error "This is not a C++17 compiler" #else -#if defined(__clang__) - #define REALLY_CLANG -#else - #if defined(__GNUC__) - #define REALLY_GCC - #endif -#endif - #include #include #include @@ -608,16 +590,12 @@ m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_17], [[ namespace cxx17 { -#if !defined(REALLY_CLANG) namespace test_constexpr_lambdas { - // TODO: test it with clang++ from git - constexpr int foo = [](){return 42;}(); } -#endif // !defined(REALLY_CLANG) namespace test::nested_namespace::definitions { @@ -852,12 +830,9 @@ namespace cxx17 } -#if !defined(REALLY_CLANG) namespace test_template_argument_deduction_for_class_templates { - // TODO: test it with clang++ from git - template struct pair { @@ -876,7 +851,6 @@ namespace cxx17 } } -#endif // !defined(REALLY_CLANG) namespace test_non_type_auto_template_parameters { @@ -890,12 +864,9 @@ namespace cxx17 } -#if !defined(REALLY_CLANG) namespace test_structured_bindings { - // TODO: test it with clang++ from git - int arr[2] = { 1, 2 }; std::pair pr = { 1, 2 }; @@ -927,14 +898,10 @@ namespace cxx17 const auto [ x3, y3 ] = f3(); } -#endif // !defined(REALLY_CLANG) -#if !defined(REALLY_CLANG) namespace test_exception_spec_type_system { - // TODO: test it with clang++ from git - struct Good {}; struct Bad {}; @@ -952,7 +919,6 @@ namespace cxx17 static_assert (std::is_same_v); } -#endif // !defined(REALLY_CLANG) namespace test_inline_variables { @@ -977,6 +943,6 @@ namespace cxx17 } // namespace cxx17 -#endif // __cplusplus <= 201402L +#endif // __cplusplus < 201703L ]]) diff --git a/m4/ax_file_escapes.m4 b/m4/ax_file_escapes.m4 new file mode 100644 index 00000000..a86fdc32 --- /dev/null +++ b/m4/ax_file_escapes.m4 @@ -0,0 +1,30 @@ +# =========================================================================== +# https://www.gnu.org/software/autoconf-archive/ax_file_escapes.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_FILE_ESCAPES +# +# DESCRIPTION +# +# Writes the specified data to the specified file. +# +# LICENSE +# +# Copyright (c) 2008 Tom Howard +# +# Copying and distribution of this file, with or without modification, are +# permitted in any medium without royalty provided the copyright notice +# and this notice are preserved. This file is offered as-is, without any +# warranty. + +#serial 8 + +AC_DEFUN([AX_FILE_ESCAPES],[ +AX_DOLLAR="\$" +AX_SRB="\\135" +AX_SLB="\\133" +AX_BS="\\\\" +AX_DQ="\"" +]) diff --git a/m4/ax_is_release.m4 b/m4/ax_is_release.m4 new file mode 100644 index 00000000..9097ddb6 --- /dev/null +++ b/m4/ax_is_release.m4 @@ -0,0 +1,80 @@ +# =========================================================================== +# https://www.gnu.org/software/autoconf-archive/ax_is_release.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_IS_RELEASE(POLICY) +# +# DESCRIPTION +# +# Determine whether the code is being configured as a release, or from +# git. Set the ax_is_release variable to 'yes' or 'no'. +# +# If building a release version, it is recommended that the configure +# script disable compiler errors and debug features, by conditionalising +# them on the ax_is_release variable. If building from git, these +# features should be enabled. +# +# The POLICY parameter specifies how ax_is_release is determined. It can +# take the following values: +# +# * git-directory: ax_is_release will be 'no' if a '.git' directory exists +# * minor-version: ax_is_release will be 'no' if the minor version number +# in $PACKAGE_VERSION is odd; this assumes +# $PACKAGE_VERSION follows the 'major.minor.micro' scheme +# * micro-version: ax_is_release will be 'no' if the micro version number +# in $PACKAGE_VERSION is odd; this assumes +# $PACKAGE_VERSION follows the 'major.minor.micro' scheme +# * dash-version: ax_is_release will be 'no' if there is a dash '-' +# in $PACKAGE_VERSION, for example 1.2-pre3, 1.2.42-a8b9 +# or 2.0-dirty (in particular this is suitable for use +# with git-version-gen) +# * always: ax_is_release will always be 'yes' +# * never: ax_is_release will always be 'no' +# +# Other policies may be added in future. +# +# LICENSE +# +# Copyright (c) 2015 Philip Withnall +# Copyright (c) 2016 Collabora Ltd. +# +# Copying and distribution of this file, with or without modification, are +# permitted in any medium without royalty provided the copyright notice +# and this notice are preserved. + +#serial 7 + +AC_DEFUN([AX_IS_RELEASE],[ + AC_BEFORE([AC_INIT],[$0]) + + m4_case([$1], + [git-directory],[ + # $is_release = (.git directory does not exist) + AS_IF([test -d ${srcdir}/.git],[ax_is_release=no],[ax_is_release=yes]) + ], + [minor-version],[ + # $is_release = ($minor_version is even) + minor_version=`echo "$PACKAGE_VERSION" | sed 's/[[^.]][[^.]]*.\([[^.]][[^.]]*\).*/\1/'` + AS_IF([test "$(( $minor_version % 2 ))" -ne 0], + [ax_is_release=no],[ax_is_release=yes]) + ], + [micro-version],[ + # $is_release = ($micro_version is even) + micro_version=`echo "$PACKAGE_VERSION" | sed 's/[[^.]]*\.[[^.]]*\.\([[^.]]*\).*/\1/'` + AS_IF([test "$(( $micro_version % 2 ))" -ne 0], + [ax_is_release=no],[ax_is_release=yes]) + ], + [dash-version],[ + # $is_release = ($PACKAGE_VERSION has a dash) + AS_CASE([$PACKAGE_VERSION], + [*-*], [ax_is_release=no], + [*], [ax_is_release=yes]) + ], + [always],[ax_is_release=yes], + [never],[ax_is_release=no], + [ + AC_MSG_ERROR([Invalid policy. Valid policies: git-directory, minor-version, micro-version, dash-version, always, never.]) + ]) +]) diff --git a/m4/ax_require_defined.m4 b/m4/ax_require_defined.m4 new file mode 100644 index 00000000..17c3eab7 --- /dev/null +++ b/m4/ax_require_defined.m4 @@ -0,0 +1,37 @@ +# =========================================================================== +# https://www.gnu.org/software/autoconf-archive/ax_require_defined.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_REQUIRE_DEFINED(MACRO) +# +# DESCRIPTION +# +# AX_REQUIRE_DEFINED is a simple helper for making sure other macros have +# been defined and thus are available for use. This avoids random issues +# where a macro isn't expanded. Instead the configure script emits a +# non-fatal: +# +# ./configure: line 1673: AX_CFLAGS_WARN_ALL: command not found +# +# It's like AC_REQUIRE except it doesn't expand the required macro. +# +# Here's an example: +# +# AX_REQUIRE_DEFINED([AX_CHECK_LINK_FLAG]) +# +# LICENSE +# +# Copyright (c) 2014 Mike Frysinger +# +# Copying and distribution of this file, with or without modification, are +# permitted in any medium without royalty provided the copyright notice +# and this notice are preserved. This file is offered as-is, without any +# warranty. + +#serial 2 + +AC_DEFUN([AX_REQUIRE_DEFINED], [dnl + m4_ifndef([$1], [m4_fatal([macro ]$1[ is not defined; is a m4 file missing?])]) +])dnl AX_REQUIRE_DEFINED diff --git a/m4/guile.m4 b/m4/guile-2.2.m4 similarity index 99% rename from m4/guile.m4 rename to m4/guile-2.2.m4 index a1cda2ef..89823e9c 100644 --- a/m4/guile.m4 +++ b/m4/guile-2.2.m4 @@ -305,10 +305,6 @@ AC_DEFUN([GUILE_PROGS], else AC_PATH_PROG(GUILE_TOOLS,[guile-tools$_guile_suffix]) fi - - AC_PATH_PROG(GUILE_SNARF,[guile-snarf$_guile_suffix]) - AC_SUBST(GUILE_SNARF) - AC_SUBST(GUILE_TOOLS) ]) diff --git a/m4/lib-ld.m4 b/m4/lib-ld.m4 deleted file mode 100644 index a7733e47..00000000 --- a/m4/lib-ld.m4 +++ /dev/null @@ -1,119 +0,0 @@ -# lib-ld.m4 serial 6 -dnl Copyright (C) 1996-2003, 2009-2017 Free Software Foundation, Inc. -dnl This file is free software; the Free Software Foundation -dnl gives unlimited permission to copy and/or distribute it, -dnl with or without modifications, as long as this notice is preserved. - -dnl Subroutines of libtool.m4, -dnl with replacements s/_*LT_PATH/AC_LIB_PROG/ and s/lt_/acl_/ to avoid -dnl collision with libtool.m4. - -dnl From libtool-2.4. Sets the variable with_gnu_ld to yes or no. -AC_DEFUN([AC_LIB_PROG_LD_GNU], -[AC_CACHE_CHECK([if the linker ($LD) is GNU ld], [acl_cv_prog_gnu_ld], -[# I'd rather use --version here, but apparently some GNU lds only accept -v. -case `$LD -v 2>&1 /dev/null 2>&1 \ - && { (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \ - || PATH_SEPARATOR=';' - } -fi - -ac_prog=ld -if test "$GCC" = yes; then - # Check if gcc -print-prog-name=ld gives a path. - AC_MSG_CHECKING([for ld used by $CC]) - case $host in - *-*-mingw*) - # gcc leaves a trailing carriage return which upsets mingw - ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;; - *) - ac_prog=`($CC -print-prog-name=ld) 2>&5` ;; - esac - case $ac_prog in - # Accept absolute paths. - [[\\/]]* | ?:[[\\/]]*) - re_direlt='/[[^/]][[^/]]*/\.\./' - # Canonicalize the pathname of ld - ac_prog=`echo "$ac_prog"| sed 's%\\\\%/%g'` - while echo "$ac_prog" | grep "$re_direlt" > /dev/null 2>&1; do - ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"` - done - test -z "$LD" && LD="$ac_prog" - ;; - "") - # If it fails, then pretend we aren't using GCC. - ac_prog=ld - ;; - *) - # If it is relative, then search for the first ld in PATH. - with_gnu_ld=unknown - ;; - esac -elif test "$with_gnu_ld" = yes; then - AC_MSG_CHECKING([for GNU ld]) -else - AC_MSG_CHECKING([for non-GNU ld]) -fi -AC_CACHE_VAL([acl_cv_path_LD], -[if test -z "$LD"; then - acl_save_ifs="$IFS"; IFS=$PATH_SEPARATOR - for ac_dir in $PATH; do - IFS="$acl_save_ifs" - test -z "$ac_dir" && ac_dir=. - if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then - acl_cv_path_LD="$ac_dir/$ac_prog" - # Check to see if the program is GNU ld. I'd rather use --version, - # but apparently some variants of GNU ld only accept -v. - # Break only if it was the GNU/non-GNU ld that we prefer. - case `"$acl_cv_path_LD" -v 2>&1 = 1.10 to complain if config.rpath is missing. - m4_ifdef([AC_REQUIRE_AUX_FILE], [AC_REQUIRE_AUX_FILE([config.rpath])]) - AC_REQUIRE([AC_PROG_CC]) dnl we use $CC, $GCC, $LDFLAGS - AC_REQUIRE([AC_LIB_PROG_LD]) dnl we use $LD, $with_gnu_ld - AC_REQUIRE([AC_CANONICAL_HOST]) dnl we use $host - AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT]) dnl we use $ac_aux_dir - AC_CACHE_CHECK([for shared library run path origin], [acl_cv_rpath], [ - CC="$CC" GCC="$GCC" LDFLAGS="$LDFLAGS" LD="$LD" with_gnu_ld="$with_gnu_ld" \ - ${CONFIG_SHELL-/bin/sh} "$ac_aux_dir/config.rpath" "$host" > conftest.sh - . ./conftest.sh - rm -f ./conftest.sh - acl_cv_rpath=done - ]) - wl="$acl_cv_wl" - acl_libext="$acl_cv_libext" - acl_shlibext="$acl_cv_shlibext" - acl_libname_spec="$acl_cv_libname_spec" - acl_library_names_spec="$acl_cv_library_names_spec" - acl_hardcode_libdir_flag_spec="$acl_cv_hardcode_libdir_flag_spec" - acl_hardcode_libdir_separator="$acl_cv_hardcode_libdir_separator" - acl_hardcode_direct="$acl_cv_hardcode_direct" - acl_hardcode_minus_L="$acl_cv_hardcode_minus_L" - dnl Determine whether the user wants rpath handling at all. - AC_ARG_ENABLE([rpath], - [ --disable-rpath do not hardcode runtime library paths], - :, enable_rpath=yes) -]) - -dnl AC_LIB_FROMPACKAGE(name, package) -dnl declares that libname comes from the given package. The configure file -dnl will then not have a --with-libname-prefix option but a -dnl --with-package-prefix option. Several libraries can come from the same -dnl package. This declaration must occur before an AC_LIB_LINKFLAGS or similar -dnl macro call that searches for libname. -AC_DEFUN([AC_LIB_FROMPACKAGE], -[ - pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-], - [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])]) - define([acl_frompackage_]NAME, [$2]) - popdef([NAME]) - pushdef([PACK],[$2]) - pushdef([PACKUP],[m4_translit(PACK,[abcdefghijklmnopqrstuvwxyz./+-], - [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])]) - define([acl_libsinpackage_]PACKUP, - m4_ifdef([acl_libsinpackage_]PACKUP, [m4_defn([acl_libsinpackage_]PACKUP)[, ]],)[lib$1]) - popdef([PACKUP]) - popdef([PACK]) -]) - -dnl AC_LIB_LINKFLAGS_BODY(name [, dependencies]) searches for libname and -dnl the libraries corresponding to explicit and implicit dependencies. -dnl Sets the LIB${NAME}, LTLIB${NAME} and INC${NAME} variables. -dnl Also, sets the LIB${NAME}_PREFIX variable to nonempty if libname was found -dnl in ${LIB${NAME}_PREFIX}/$acl_libdirstem. -AC_DEFUN([AC_LIB_LINKFLAGS_BODY], -[ - AC_REQUIRE([AC_LIB_PREPARE_MULTILIB]) - pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-], - [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])]) - pushdef([PACK],[m4_ifdef([acl_frompackage_]NAME, [acl_frompackage_]NAME, lib[$1])]) - pushdef([PACKUP],[m4_translit(PACK,[abcdefghijklmnopqrstuvwxyz./+-], - [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])]) - pushdef([PACKLIBS],[m4_ifdef([acl_frompackage_]NAME, [acl_libsinpackage_]PACKUP, lib[$1])]) - dnl Autoconf >= 2.61 supports dots in --with options. - pushdef([P_A_C_K],[m4_if(m4_version_compare(m4_defn([m4_PACKAGE_VERSION]),[2.61]),[-1],[m4_translit(PACK,[.],[_])],PACK)]) - dnl By default, look in $includedir and $libdir. - use_additional=yes - AC_LIB_WITH_FINAL_PREFIX([ - eval additional_includedir=\"$includedir\" - eval additional_libdir=\"$libdir\" - ]) - AC_ARG_WITH(P_A_C_K[-prefix], -[[ --with-]]P_A_C_K[[-prefix[=DIR] search for ]PACKLIBS[ in DIR/include and DIR/lib - --without-]]P_A_C_K[[-prefix don't search for ]PACKLIBS[ in includedir and libdir]], -[ - if test "X$withval" = "Xno"; then - use_additional=no - else - if test "X$withval" = "X"; then - AC_LIB_WITH_FINAL_PREFIX([ - eval additional_includedir=\"$includedir\" - eval additional_libdir=\"$libdir\" - ]) - else - additional_includedir="$withval/include" - additional_libdir="$withval/$acl_libdirstem" - if test "$acl_libdirstem2" != "$acl_libdirstem" \ - && ! test -d "$withval/$acl_libdirstem"; then - additional_libdir="$withval/$acl_libdirstem2" - fi - fi - fi -]) - dnl Search the library and its dependencies in $additional_libdir and - dnl $LDFLAGS. Using breadth-first-seach. - LIB[]NAME= - LTLIB[]NAME= - INC[]NAME= - LIB[]NAME[]_PREFIX= - dnl HAVE_LIB${NAME} is an indicator that LIB${NAME}, LTLIB${NAME} have been - dnl computed. So it has to be reset here. - HAVE_LIB[]NAME= - rpathdirs= - ltrpathdirs= - names_already_handled= - names_next_round='$1 $2' - while test -n "$names_next_round"; do - names_this_round="$names_next_round" - names_next_round= - for name in $names_this_round; do - already_handled= - for n in $names_already_handled; do - if test "$n" = "$name"; then - already_handled=yes - break - fi - done - if test -z "$already_handled"; then - names_already_handled="$names_already_handled $name" - dnl See if it was already located by an earlier AC_LIB_LINKFLAGS - dnl or AC_LIB_HAVE_LINKFLAGS call. - uppername=`echo "$name" | sed -e 'y|abcdefghijklmnopqrstuvwxyz./+-|ABCDEFGHIJKLMNOPQRSTUVWXYZ____|'` - eval value=\"\$HAVE_LIB$uppername\" - if test -n "$value"; then - if test "$value" = yes; then - eval value=\"\$LIB$uppername\" - test -z "$value" || LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$value" - eval value=\"\$LTLIB$uppername\" - test -z "$value" || LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$value" - else - dnl An earlier call to AC_LIB_HAVE_LINKFLAGS has determined - dnl that this library doesn't exist. So just drop it. - : - fi - else - dnl Search the library lib$name in $additional_libdir and $LDFLAGS - dnl and the already constructed $LIBNAME/$LTLIBNAME. - found_dir= - found_la= - found_so= - found_a= - eval libname=\"$acl_libname_spec\" # typically: libname=lib$name - if test -n "$acl_shlibext"; then - shrext=".$acl_shlibext" # typically: shrext=.so - else - shrext= - fi - if test $use_additional = yes; then - dir="$additional_libdir" - dnl The same code as in the loop below: - dnl First look for a shared library. - if test -n "$acl_shlibext"; then - if test -f "$dir/$libname$shrext"; then - found_dir="$dir" - found_so="$dir/$libname$shrext" - else - if test "$acl_library_names_spec" = '$libname$shrext$versuffix'; then - ver=`(cd "$dir" && \ - for f in "$libname$shrext".*; do echo "$f"; done \ - | sed -e "s,^$libname$shrext\\\\.,," \ - | sort -t '.' -n -r -k1,1 -k2,2 -k3,3 -k4,4 -k5,5 \ - | sed 1q ) 2>/dev/null` - if test -n "$ver" && test -f "$dir/$libname$shrext.$ver"; then - found_dir="$dir" - found_so="$dir/$libname$shrext.$ver" - fi - else - eval library_names=\"$acl_library_names_spec\" - for f in $library_names; do - if test -f "$dir/$f"; then - found_dir="$dir" - found_so="$dir/$f" - break - fi - done - fi - fi - fi - dnl Then look for a static library. - if test "X$found_dir" = "X"; then - if test -f "$dir/$libname.$acl_libext"; then - found_dir="$dir" - found_a="$dir/$libname.$acl_libext" - fi - fi - if test "X$found_dir" != "X"; then - if test -f "$dir/$libname.la"; then - found_la="$dir/$libname.la" - fi - fi - fi - if test "X$found_dir" = "X"; then - for x in $LDFLAGS $LTLIB[]NAME; do - AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) - case "$x" in - -L*) - dir=`echo "X$x" | sed -e 's/^X-L//'` - dnl First look for a shared library. - if test -n "$acl_shlibext"; then - if test -f "$dir/$libname$shrext"; then - found_dir="$dir" - found_so="$dir/$libname$shrext" - else - if test "$acl_library_names_spec" = '$libname$shrext$versuffix'; then - ver=`(cd "$dir" && \ - for f in "$libname$shrext".*; do echo "$f"; done \ - | sed -e "s,^$libname$shrext\\\\.,," \ - | sort -t '.' -n -r -k1,1 -k2,2 -k3,3 -k4,4 -k5,5 \ - | sed 1q ) 2>/dev/null` - if test -n "$ver" && test -f "$dir/$libname$shrext.$ver"; then - found_dir="$dir" - found_so="$dir/$libname$shrext.$ver" - fi - else - eval library_names=\"$acl_library_names_spec\" - for f in $library_names; do - if test -f "$dir/$f"; then - found_dir="$dir" - found_so="$dir/$f" - break - fi - done - fi - fi - fi - dnl Then look for a static library. - if test "X$found_dir" = "X"; then - if test -f "$dir/$libname.$acl_libext"; then - found_dir="$dir" - found_a="$dir/$libname.$acl_libext" - fi - fi - if test "X$found_dir" != "X"; then - if test -f "$dir/$libname.la"; then - found_la="$dir/$libname.la" - fi - fi - ;; - esac - if test "X$found_dir" != "X"; then - break - fi - done - fi - if test "X$found_dir" != "X"; then - dnl Found the library. - LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$found_dir -l$name" - if test "X$found_so" != "X"; then - dnl Linking with a shared library. We attempt to hardcode its - dnl directory into the executable's runpath, unless it's the - dnl standard /usr/lib. - if test "$enable_rpath" = no \ - || test "X$found_dir" = "X/usr/$acl_libdirstem" \ - || test "X$found_dir" = "X/usr/$acl_libdirstem2"; then - dnl No hardcoding is needed. - LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so" - else - dnl Use an explicit option to hardcode DIR into the resulting - dnl binary. - dnl Potentially add DIR to ltrpathdirs. - dnl The ltrpathdirs will be appended to $LTLIBNAME at the end. - haveit= - for x in $ltrpathdirs; do - if test "X$x" = "X$found_dir"; then - haveit=yes - break - fi - done - if test -z "$haveit"; then - ltrpathdirs="$ltrpathdirs $found_dir" - fi - dnl The hardcoding into $LIBNAME is system dependent. - if test "$acl_hardcode_direct" = yes; then - dnl Using DIR/libNAME.so during linking hardcodes DIR into the - dnl resulting binary. - LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so" - else - if test -n "$acl_hardcode_libdir_flag_spec" && test "$acl_hardcode_minus_L" = no; then - dnl Use an explicit option to hardcode DIR into the resulting - dnl binary. - LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so" - dnl Potentially add DIR to rpathdirs. - dnl The rpathdirs will be appended to $LIBNAME at the end. - haveit= - for x in $rpathdirs; do - if test "X$x" = "X$found_dir"; then - haveit=yes - break - fi - done - if test -z "$haveit"; then - rpathdirs="$rpathdirs $found_dir" - fi - else - dnl Rely on "-L$found_dir". - dnl But don't add it if it's already contained in the LDFLAGS - dnl or the already constructed $LIBNAME - haveit= - for x in $LDFLAGS $LIB[]NAME; do - AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) - if test "X$x" = "X-L$found_dir"; then - haveit=yes - break - fi - done - if test -z "$haveit"; then - LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir" - fi - if test "$acl_hardcode_minus_L" != no; then - dnl FIXME: Not sure whether we should use - dnl "-L$found_dir -l$name" or "-L$found_dir $found_so" - dnl here. - LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so" - else - dnl We cannot use $acl_hardcode_runpath_var and LD_RUN_PATH - dnl here, because this doesn't fit in flags passed to the - dnl compiler. So give up. No hardcoding. This affects only - dnl very old systems. - dnl FIXME: Not sure whether we should use - dnl "-L$found_dir -l$name" or "-L$found_dir $found_so" - dnl here. - LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name" - fi - fi - fi - fi - else - if test "X$found_a" != "X"; then - dnl Linking with a static library. - LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_a" - else - dnl We shouldn't come here, but anyway it's good to have a - dnl fallback. - LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir -l$name" - fi - fi - dnl Assume the include files are nearby. - additional_includedir= - case "$found_dir" in - */$acl_libdirstem | */$acl_libdirstem/) - basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem/"'*$,,'` - if test "$name" = '$1'; then - LIB[]NAME[]_PREFIX="$basedir" - fi - additional_includedir="$basedir/include" - ;; - */$acl_libdirstem2 | */$acl_libdirstem2/) - basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem2/"'*$,,'` - if test "$name" = '$1'; then - LIB[]NAME[]_PREFIX="$basedir" - fi - additional_includedir="$basedir/include" - ;; - esac - if test "X$additional_includedir" != "X"; then - dnl Potentially add $additional_includedir to $INCNAME. - dnl But don't add it - dnl 1. if it's the standard /usr/include, - dnl 2. if it's /usr/local/include and we are using GCC on Linux, - dnl 3. if it's already present in $CPPFLAGS or the already - dnl constructed $INCNAME, - dnl 4. if it doesn't exist as a directory. - if test "X$additional_includedir" != "X/usr/include"; then - haveit= - if test "X$additional_includedir" = "X/usr/local/include"; then - if test -n "$GCC"; then - case $host_os in - linux* | gnu* | k*bsd*-gnu) haveit=yes;; - esac - fi - fi - if test -z "$haveit"; then - for x in $CPPFLAGS $INC[]NAME; do - AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) - if test "X$x" = "X-I$additional_includedir"; then - haveit=yes - break - fi - done - if test -z "$haveit"; then - if test -d "$additional_includedir"; then - dnl Really add $additional_includedir to $INCNAME. - INC[]NAME="${INC[]NAME}${INC[]NAME:+ }-I$additional_includedir" - fi - fi - fi - fi - fi - dnl Look for dependencies. - if test -n "$found_la"; then - dnl Read the .la file. It defines the variables - dnl dlname, library_names, old_library, dependency_libs, current, - dnl age, revision, installed, dlopen, dlpreopen, libdir. - save_libdir="$libdir" - case "$found_la" in - */* | *\\*) . "$found_la" ;; - *) . "./$found_la" ;; - esac - libdir="$save_libdir" - dnl We use only dependency_libs. - for dep in $dependency_libs; do - case "$dep" in - -L*) - additional_libdir=`echo "X$dep" | sed -e 's/^X-L//'` - dnl Potentially add $additional_libdir to $LIBNAME and $LTLIBNAME. - dnl But don't add it - dnl 1. if it's the standard /usr/lib, - dnl 2. if it's /usr/local/lib and we are using GCC on Linux, - dnl 3. if it's already present in $LDFLAGS or the already - dnl constructed $LIBNAME, - dnl 4. if it doesn't exist as a directory. - if test "X$additional_libdir" != "X/usr/$acl_libdirstem" \ - && test "X$additional_libdir" != "X/usr/$acl_libdirstem2"; then - haveit= - if test "X$additional_libdir" = "X/usr/local/$acl_libdirstem" \ - || test "X$additional_libdir" = "X/usr/local/$acl_libdirstem2"; then - if test -n "$GCC"; then - case $host_os in - linux* | gnu* | k*bsd*-gnu) haveit=yes;; - esac - fi - fi - if test -z "$haveit"; then - haveit= - for x in $LDFLAGS $LIB[]NAME; do - AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) - if test "X$x" = "X-L$additional_libdir"; then - haveit=yes - break - fi - done - if test -z "$haveit"; then - if test -d "$additional_libdir"; then - dnl Really add $additional_libdir to $LIBNAME. - LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$additional_libdir" - fi - fi - haveit= - for x in $LDFLAGS $LTLIB[]NAME; do - AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) - if test "X$x" = "X-L$additional_libdir"; then - haveit=yes - break - fi - done - if test -z "$haveit"; then - if test -d "$additional_libdir"; then - dnl Really add $additional_libdir to $LTLIBNAME. - LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$additional_libdir" - fi - fi - fi - fi - ;; - -R*) - dir=`echo "X$dep" | sed -e 's/^X-R//'` - if test "$enable_rpath" != no; then - dnl Potentially add DIR to rpathdirs. - dnl The rpathdirs will be appended to $LIBNAME at the end. - haveit= - for x in $rpathdirs; do - if test "X$x" = "X$dir"; then - haveit=yes - break - fi - done - if test -z "$haveit"; then - rpathdirs="$rpathdirs $dir" - fi - dnl Potentially add DIR to ltrpathdirs. - dnl The ltrpathdirs will be appended to $LTLIBNAME at the end. - haveit= - for x in $ltrpathdirs; do - if test "X$x" = "X$dir"; then - haveit=yes - break - fi - done - if test -z "$haveit"; then - ltrpathdirs="$ltrpathdirs $dir" - fi - fi - ;; - -l*) - dnl Handle this in the next round. - names_next_round="$names_next_round "`echo "X$dep" | sed -e 's/^X-l//'` - ;; - *.la) - dnl Handle this in the next round. Throw away the .la's - dnl directory; it is already contained in a preceding -L - dnl option. - names_next_round="$names_next_round "`echo "X$dep" | sed -e 's,^X.*/,,' -e 's,^lib,,' -e 's,\.la$,,'` - ;; - *) - dnl Most likely an immediate library name. - LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$dep" - LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$dep" - ;; - esac - done - fi - else - dnl Didn't find the library; assume it is in the system directories - dnl known to the linker and runtime loader. (All the system - dnl directories known to the linker should also be known to the - dnl runtime loader, otherwise the system is severely misconfigured.) - LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name" - LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-l$name" - fi - fi - fi - done - done - if test "X$rpathdirs" != "X"; then - if test -n "$acl_hardcode_libdir_separator"; then - dnl Weird platform: only the last -rpath option counts, the user must - dnl pass all path elements in one option. We can arrange that for a - dnl single library, but not when more than one $LIBNAMEs are used. - alldirs= - for found_dir in $rpathdirs; do - alldirs="${alldirs}${alldirs:+$acl_hardcode_libdir_separator}$found_dir" - done - dnl Note: acl_hardcode_libdir_flag_spec uses $libdir and $wl. - acl_save_libdir="$libdir" - libdir="$alldirs" - eval flag=\"$acl_hardcode_libdir_flag_spec\" - libdir="$acl_save_libdir" - LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag" - else - dnl The -rpath options are cumulative. - for found_dir in $rpathdirs; do - acl_save_libdir="$libdir" - libdir="$found_dir" - eval flag=\"$acl_hardcode_libdir_flag_spec\" - libdir="$acl_save_libdir" - LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag" - done - fi - fi - if test "X$ltrpathdirs" != "X"; then - dnl When using libtool, the option that works for both libraries and - dnl executables is -R. The -R options are cumulative. - for found_dir in $ltrpathdirs; do - LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-R$found_dir" - done - fi - popdef([P_A_C_K]) - popdef([PACKLIBS]) - popdef([PACKUP]) - popdef([PACK]) - popdef([NAME]) -]) - -dnl AC_LIB_APPENDTOVAR(VAR, CONTENTS) appends the elements of CONTENTS to VAR, -dnl unless already present in VAR. -dnl Works only for CPPFLAGS, not for LIB* variables because that sometimes -dnl contains two or three consecutive elements that belong together. -AC_DEFUN([AC_LIB_APPENDTOVAR], -[ - for element in [$2]; do - haveit= - for x in $[$1]; do - AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) - if test "X$x" = "X$element"; then - haveit=yes - break - fi - done - if test -z "$haveit"; then - [$1]="${[$1]}${[$1]:+ }$element" - fi - done -]) - -dnl For those cases where a variable contains several -L and -l options -dnl referring to unknown libraries and directories, this macro determines the -dnl necessary additional linker options for the runtime path. -dnl AC_LIB_LINKFLAGS_FROM_LIBS([LDADDVAR], [LIBSVALUE], [USE-LIBTOOL]) -dnl sets LDADDVAR to linker options needed together with LIBSVALUE. -dnl If USE-LIBTOOL evaluates to non-empty, linking with libtool is assumed, -dnl otherwise linking without libtool is assumed. -AC_DEFUN([AC_LIB_LINKFLAGS_FROM_LIBS], -[ - AC_REQUIRE([AC_LIB_RPATH]) - AC_REQUIRE([AC_LIB_PREPARE_MULTILIB]) - $1= - if test "$enable_rpath" != no; then - if test -n "$acl_hardcode_libdir_flag_spec" && test "$acl_hardcode_minus_L" = no; then - dnl Use an explicit option to hardcode directories into the resulting - dnl binary. - rpathdirs= - next= - for opt in $2; do - if test -n "$next"; then - dir="$next" - dnl No need to hardcode the standard /usr/lib. - if test "X$dir" != "X/usr/$acl_libdirstem" \ - && test "X$dir" != "X/usr/$acl_libdirstem2"; then - rpathdirs="$rpathdirs $dir" - fi - next= - else - case $opt in - -L) next=yes ;; - -L*) dir=`echo "X$opt" | sed -e 's,^X-L,,'` - dnl No need to hardcode the standard /usr/lib. - if test "X$dir" != "X/usr/$acl_libdirstem" \ - && test "X$dir" != "X/usr/$acl_libdirstem2"; then - rpathdirs="$rpathdirs $dir" - fi - next= ;; - *) next= ;; - esac - fi - done - if test "X$rpathdirs" != "X"; then - if test -n ""$3""; then - dnl libtool is used for linking. Use -R options. - for dir in $rpathdirs; do - $1="${$1}${$1:+ }-R$dir" - done - else - dnl The linker is used for linking directly. - if test -n "$acl_hardcode_libdir_separator"; then - dnl Weird platform: only the last -rpath option counts, the user - dnl must pass all path elements in one option. - alldirs= - for dir in $rpathdirs; do - alldirs="${alldirs}${alldirs:+$acl_hardcode_libdir_separator}$dir" - done - acl_save_libdir="$libdir" - libdir="$alldirs" - eval flag=\"$acl_hardcode_libdir_flag_spec\" - libdir="$acl_save_libdir" - $1="$flag" - else - dnl The -rpath options are cumulative. - for dir in $rpathdirs; do - acl_save_libdir="$libdir" - libdir="$dir" - eval flag=\"$acl_hardcode_libdir_flag_spec\" - libdir="$acl_save_libdir" - $1="${$1}${$1:+ }$flag" - done - fi - fi - fi - fi - fi - AC_SUBST([$1]) -]) diff --git a/m4/lib-prefix.m4 b/m4/lib-prefix.m4 deleted file mode 100644 index 68a0835c..00000000 --- a/m4/lib-prefix.m4 +++ /dev/null @@ -1,224 +0,0 @@ -# lib-prefix.m4 serial 7 (gettext-0.18) -dnl Copyright (C) 2001-2005, 2008-2017 Free Software Foundation, Inc. -dnl This file is free software; the Free Software Foundation -dnl gives unlimited permission to copy and/or distribute it, -dnl with or without modifications, as long as this notice is preserved. - -dnl From Bruno Haible. - -dnl AC_LIB_ARG_WITH is synonymous to AC_ARG_WITH in autoconf-2.13, and -dnl similar to AC_ARG_WITH in autoconf 2.52...2.57 except that is doesn't -dnl require excessive bracketing. -ifdef([AC_HELP_STRING], -[AC_DEFUN([AC_LIB_ARG_WITH], [AC_ARG_WITH([$1],[[$2]],[$3],[$4])])], -[AC_DEFUN([AC_][LIB_ARG_WITH], [AC_ARG_WITH([$1],[$2],[$3],[$4])])]) - -dnl AC_LIB_PREFIX adds to the CPPFLAGS and LDFLAGS the flags that are needed -dnl to access previously installed libraries. The basic assumption is that -dnl a user will want packages to use other packages he previously installed -dnl with the same --prefix option. -dnl This macro is not needed if only AC_LIB_LINKFLAGS is used to locate -dnl libraries, but is otherwise very convenient. -AC_DEFUN([AC_LIB_PREFIX], -[ - AC_BEFORE([$0], [AC_LIB_LINKFLAGS]) - AC_REQUIRE([AC_PROG_CC]) - AC_REQUIRE([AC_CANONICAL_HOST]) - AC_REQUIRE([AC_LIB_PREPARE_MULTILIB]) - AC_REQUIRE([AC_LIB_PREPARE_PREFIX]) - dnl By default, look in $includedir and $libdir. - use_additional=yes - AC_LIB_WITH_FINAL_PREFIX([ - eval additional_includedir=\"$includedir\" - eval additional_libdir=\"$libdir\" - ]) - AC_LIB_ARG_WITH([lib-prefix], -[ --with-lib-prefix[=DIR] search for libraries in DIR/include and DIR/lib - --without-lib-prefix don't search for libraries in includedir and libdir], -[ - if test "X$withval" = "Xno"; then - use_additional=no - else - if test "X$withval" = "X"; then - AC_LIB_WITH_FINAL_PREFIX([ - eval additional_includedir=\"$includedir\" - eval additional_libdir=\"$libdir\" - ]) - else - additional_includedir="$withval/include" - additional_libdir="$withval/$acl_libdirstem" - fi - fi -]) - if test $use_additional = yes; then - dnl Potentially add $additional_includedir to $CPPFLAGS. - dnl But don't add it - dnl 1. if it's the standard /usr/include, - dnl 2. if it's already present in $CPPFLAGS, - dnl 3. if it's /usr/local/include and we are using GCC on Linux, - dnl 4. if it doesn't exist as a directory. - if test "X$additional_includedir" != "X/usr/include"; then - haveit= - for x in $CPPFLAGS; do - AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) - if test "X$x" = "X-I$additional_includedir"; then - haveit=yes - break - fi - done - if test -z "$haveit"; then - if test "X$additional_includedir" = "X/usr/local/include"; then - if test -n "$GCC"; then - case $host_os in - linux* | gnu* | k*bsd*-gnu) haveit=yes;; - esac - fi - fi - if test -z "$haveit"; then - if test -d "$additional_includedir"; then - dnl Really add $additional_includedir to $CPPFLAGS. - CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }-I$additional_includedir" - fi - fi - fi - fi - dnl Potentially add $additional_libdir to $LDFLAGS. - dnl But don't add it - dnl 1. if it's the standard /usr/lib, - dnl 2. if it's already present in $LDFLAGS, - dnl 3. if it's /usr/local/lib and we are using GCC on Linux, - dnl 4. if it doesn't exist as a directory. - if test "X$additional_libdir" != "X/usr/$acl_libdirstem"; then - haveit= - for x in $LDFLAGS; do - AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) - if test "X$x" = "X-L$additional_libdir"; then - haveit=yes - break - fi - done - if test -z "$haveit"; then - if test "X$additional_libdir" = "X/usr/local/$acl_libdirstem"; then - if test -n "$GCC"; then - case $host_os in - linux*) haveit=yes;; - esac - fi - fi - if test -z "$haveit"; then - if test -d "$additional_libdir"; then - dnl Really add $additional_libdir to $LDFLAGS. - LDFLAGS="${LDFLAGS}${LDFLAGS:+ }-L$additional_libdir" - fi - fi - fi - fi - fi -]) - -dnl AC_LIB_PREPARE_PREFIX creates variables acl_final_prefix, -dnl acl_final_exec_prefix, containing the values to which $prefix and -dnl $exec_prefix will expand at the end of the configure script. -AC_DEFUN([AC_LIB_PREPARE_PREFIX], -[ - dnl Unfortunately, prefix and exec_prefix get only finally determined - dnl at the end of configure. - if test "X$prefix" = "XNONE"; then - acl_final_prefix="$ac_default_prefix" - else - acl_final_prefix="$prefix" - fi - if test "X$exec_prefix" = "XNONE"; then - acl_final_exec_prefix='${prefix}' - else - acl_final_exec_prefix="$exec_prefix" - fi - acl_save_prefix="$prefix" - prefix="$acl_final_prefix" - eval acl_final_exec_prefix=\"$acl_final_exec_prefix\" - prefix="$acl_save_prefix" -]) - -dnl AC_LIB_WITH_FINAL_PREFIX([statement]) evaluates statement, with the -dnl variables prefix and exec_prefix bound to the values they will have -dnl at the end of the configure script. -AC_DEFUN([AC_LIB_WITH_FINAL_PREFIX], -[ - acl_save_prefix="$prefix" - prefix="$acl_final_prefix" - acl_save_exec_prefix="$exec_prefix" - exec_prefix="$acl_final_exec_prefix" - $1 - exec_prefix="$acl_save_exec_prefix" - prefix="$acl_save_prefix" -]) - -dnl AC_LIB_PREPARE_MULTILIB creates -dnl - a variable acl_libdirstem, containing the basename of the libdir, either -dnl "lib" or "lib64" or "lib/64", -dnl - a variable acl_libdirstem2, as a secondary possible value for -dnl acl_libdirstem, either the same as acl_libdirstem or "lib/sparcv9" or -dnl "lib/amd64". -AC_DEFUN([AC_LIB_PREPARE_MULTILIB], -[ - dnl There is no formal standard regarding lib and lib64. - dnl On glibc systems, the current practice is that on a system supporting - dnl 32-bit and 64-bit instruction sets or ABIs, 64-bit libraries go under - dnl $prefix/lib64 and 32-bit libraries go under $prefix/lib. We determine - dnl the compiler's default mode by looking at the compiler's library search - dnl path. If at least one of its elements ends in /lib64 or points to a - dnl directory whose absolute pathname ends in /lib64, we assume a 64-bit ABI. - dnl Otherwise we use the default, namely "lib". - dnl On Solaris systems, the current practice is that on a system supporting - dnl 32-bit and 64-bit instruction sets or ABIs, 64-bit libraries go under - dnl $prefix/lib/64 (which is a symlink to either $prefix/lib/sparcv9 or - dnl $prefix/lib/amd64) and 32-bit libraries go under $prefix/lib. - AC_REQUIRE([AC_CANONICAL_HOST]) - acl_libdirstem=lib - acl_libdirstem2= - case "$host_os" in - solaris*) - dnl See Solaris 10 Software Developer Collection > Solaris 64-bit Developer's Guide > The Development Environment - dnl . - dnl "Portable Makefiles should refer to any library directories using the 64 symbolic link." - dnl But we want to recognize the sparcv9 or amd64 subdirectory also if the - dnl symlink is missing, so we set acl_libdirstem2 too. - AC_CACHE_CHECK([for 64-bit host], [gl_cv_solaris_64bit], - [AC_EGREP_CPP([sixtyfour bits], [ -#ifdef _LP64 -sixtyfour bits -#endif - ], [gl_cv_solaris_64bit=yes], [gl_cv_solaris_64bit=no]) - ]) - if test $gl_cv_solaris_64bit = yes; then - acl_libdirstem=lib/64 - case "$host_cpu" in - sparc*) acl_libdirstem2=lib/sparcv9 ;; - i*86 | x86_64) acl_libdirstem2=lib/amd64 ;; - esac - fi - ;; - *) - searchpath=`(LC_ALL=C $CC -print-search-dirs) 2>/dev/null | sed -n -e 's,^libraries: ,,p' | sed -e 's,^=,,'` - if test -n "$searchpath"; then - acl_save_IFS="${IFS= }"; IFS=":" - for searchdir in $searchpath; do - if test -d "$searchdir"; then - case "$searchdir" in - */lib64/ | */lib64 ) acl_libdirstem=lib64 ;; - */../ | */.. ) - # Better ignore directories of this form. They are misleading. - ;; - *) searchdir=`cd "$searchdir" && pwd` - case "$searchdir" in - */lib64 ) acl_libdirstem=lib64 ;; - esac ;; - esac - fi - done - IFS="$acl_save_IFS" - fi - ;; - esac - test -n "$acl_libdirstem2" || acl_libdirstem2="$acl_libdirstem" -]) diff --git a/m4/perlmod.m4 b/m4/perlmod.m4 deleted file mode 100644 index 660f72be..00000000 --- a/m4/perlmod.m4 +++ /dev/null @@ -1,34 +0,0 @@ -# perlmod.m4 - Check for the availability of a perl module -*-Autoconf-*- -# -# Copyright (C) 2015 by attila -# -# Permission to use, copy, modify, and distribute this software for -# any purpose with or without fee is hereby granted, provided that the -# above copyright notice and this permission notice appear in all -# copies. -# -# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL -# WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED -# WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE -# AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL -# DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR -# PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER -# TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR -# PERFORMANCE OF THIS SOFTWARE. - -# AM_PERL_MODULE([module_name],[code_to_execute]) -# ----------------------------------------------- - -# serial 1 - -AC_DEFUN([AM_PERL_MODULE], -[AC_PREREQ([2.60])dnl - AC_MSG_CHECKING([for $1]) - _modfile=`$PERL -e 'use '$1'; my $p="'$1'"; $p =~ s/::/\//g; print $INC{"$p.pm"}."\n";' 2>/dev/null` - if test -z "$_modfile"; then - AC_MSG_WARN([missing $1]) - else - AC_MSG_RESULT([$_modfile]) - m4_default([$2],[:]) - fi -])dnl