a7ad98fabc
All but toplevel Makefile.am are replaced with their non-recursive
counterparts. The generation of configure.in was removed (and thus
configure-{pre,post}.in are also removed) in favor of configure.ac
and m4 macros adding backend specific configure parts.
Version number is generated like in old build system.
There are still many things to improve, but for now there are no
immediate regressions. AUTOTOOLS-TODO contains a list of possible
improvements and fixes. AUTOTOOLS-TESTING contains what was tested
with current build system (configure flags, make options).
114 lines
3.6 KiB
Text
114 lines
3.6 KiB
Text
## Copyright (c) 2004-2007 Daniel Elstner <daniel.kitta@gmail.com>
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##
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## This file is part of danielk's Autostuff.
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##
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## danielk's Autostuff is free software; you can redistribute it and/or
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## modify it under the terms of the GNU General Public License as published
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## by the Free Software Foundation; either version 2 of the License, or (at
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## your option) any later version.
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##
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## danielk's Autostuff is distributed in the hope that it will be useful, but
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## WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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## for more details.
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##
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## You should have received a copy of the GNU General Public License along
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## with danielk's Autostuff; if not, write to the Free Software Foundation,
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## Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#serial 20070116
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## DK_ARG_ENABLE_WARNINGS(variable, min-flags, max-flags, [deprecation-prefixes])
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##
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## Provide the --enable-warnings configure argument, set to "min" by default.
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## <min-flags> and <max-flags> should be space-separated lists of compiler
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## warning flags to use with --enable-warnings=min or --enable-warnings=max,
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## respectively. Warning level "fatal" is the same as "max" but in addition
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## enables -Werror mode.
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##
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## If not empty, <deprecation-prefixes> should be a list of module prefixes
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## which is expanded to -D<module>_DISABLE_DEPRECATED flags if fatal warnings
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## are enabled, too.
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##
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AC_DEFUN([DK_ARG_ENABLE_WARNINGS],
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[dnl
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m4_if([$3],, [AC_FATAL([3 arguments expected])])[]dnl
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dnl
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AC_ARG_ENABLE([warnings], [AS_HELP_STRING(
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[--enable-warnings=@<:@min|max|fatal|no@:>@],
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[control compiler pickyness @<:@min@:>@])],
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[dk_enable_warnings=$enableval],
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[dk_enable_warnings=min])[]dnl
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dk_lang=
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case $ac_compile in
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*'$CXXFLAGS '*)
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dk_lang='C++'
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dk_cc=$CXX
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dk_conftest=conftest.${ac_ext-cc}
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;;
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*'$CFLAGS '*)
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dk_lang=C
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dk_cc=$CC
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dk_conftest=conftest.${ac_ext-c}
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;;
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esac
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AS_IF([test "x$dk_lang" != x],
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[
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AC_MSG_CHECKING([which $dk_lang compiler warning flags to use])
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case $dk_enable_warnings in
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no) dk_warning_flags=;;
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max) dk_warning_flags="$3";;
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fatal) dk_warning_flags="$3 -Werror";;
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*) dk_warning_flags="$2";;
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esac
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dk_deprecation_flags=
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m4_if([$4],,, [
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AS_IF([test "x$dk_enable_warnings" = xfatal],
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[
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dk_deprecation_prefixes="$4"
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for dk_prefix in $dk_deprecation_prefixes
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do
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dk_deprecation_flags="${dk_deprecation_flags}-D${dk_prefix}_DISABLE_DEPRECATED "
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done
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])
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])[]dnl
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dk_tested_flags=
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AS_IF([test "x$dk_warning_flags" != x],
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[
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# Keep in mind that the dummy source must be devoid of any
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# problems that might cause diagnostics.
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AC_LANG_CONFTEST([AC_LANG_SOURCE(
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[[int main(int argc, char** argv) { return (argv != 0) ? argc : 0; }]])])
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for dk_flag in $dk_warning_flags
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do
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# Test whether the compiler accepts the flag. GCC doesn't bail
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# out when given an unsupported flag but prints a warning, so
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# check the compiler output instead.
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dk_cc_out=`$dk_cc $dk_tested_flags $dk_flag -c "$dk_conftest" 2>&1 || echo failed`
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rm -f "conftest.${OBJEXT-o}"
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AS_IF([test "x$dk_cc_out" = x],
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[
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AS_IF([test "x$dk_tested_flags" = x],
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[dk_tested_flags=$dk_flag],
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[dk_tested_flags="$dk_tested_flags $dk_flag"])
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], [
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echo "$dk_cc_out" >&AS_MESSAGE_LOG_FD
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])
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done
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rm -f "$dk_conftest"
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])
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dk_all_flags=$dk_deprecation_flags$dk_tested_flags
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AC_SUBST([$1], [$dk_all_flags])
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test "x$dk_all_flags" != x || dk_all_flags=none
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AC_MSG_RESULT([$dk_all_flags])
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])
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])
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