Add AX_CHECK_COMPILE_FLAG (from Autotools packages)
It's fix the build with Clang and --enable-werror, don't support -WClobberred and display error about unknown warning option error: unknown warning option '-Wclobbered'; did you mean '-Wconsumed'? [-Werror,-Wunknown-warning-option]
This commit is contained in:
Alexis La Goutte
parent
6e7d0286e3
commit
5b208c6277
30
configure.ac
30
configure.ac
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@ -427,15 +427,27 @@ case "${host}" in
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esac
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if test "x$werror" != "xno"; then
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CFLAGS="$CFLAGS -Wall -Wextra -Werror"
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CFLAGS="$CFLAGS -Wmissing-prototypes -Wstrict-prototypes"
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CFLAGS="$CFLAGS -Wmissing-declarations -Wpointer-arith"
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CFLAGS="$CFLAGS -Wdeclaration-after-statement"
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CFLAGS="$CFLAGS -Wformat-security"
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CFLAGS="$CFLAGS -Wwrite-strings -Wshadow -Winline -Wnested-externs"
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CFLAGS="$CFLAGS -Wfloat-equal -Wundef -Wendif-labels -Wempty-body"
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CFLAGS="$CFLAGS -Wcast-align -Wclobbered -Wvla"
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CFLAGS="$CFLAGS -Wno-unused-parameter"
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AX_CHECK_COMPILE_FLAG([-Wall], [CFLAGS="$CFLAGS -Wall"])
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AX_CHECK_COMPILE_FLAG([-Wextra], [CFLAGS="$CFLAGS -Wextra"])
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AX_CHECK_COMPILE_FLAG([-Werror], [CFLAGS="$CFLAGS -Werror"])
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AX_CHECK_COMPILE_FLAG([-Wmissing-prototypes], [CFLAGS="$CFLAGS -Wmissing-prototypes"])
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AX_CHECK_COMPILE_FLAG([-Wstrict-prototypes], [CFLAGS="$CFLAGS -Wstrict-prototypes"])
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AX_CHECK_COMPILE_FLAG([-Wmissing-declarations], [CFLAGS="$CFLAGS -Wmissing-declarations"])
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AX_CHECK_COMPILE_FLAG([-Wpointer-arith], [CFLAGS="$CFLAGS -Wpointer-arith"])
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AX_CHECK_COMPILE_FLAG([-Wdeclaration-after-statement], [CFLAGS="$CFLAGS -Wdeclaration-after-statement"])
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AX_CHECK_COMPILE_FLAG([-Wformat-security], [CFLAGS="$CFLAGS -Wformat-security"])
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AX_CHECK_COMPILE_FLAG([-Wwrite-strings], [CFLAGS="$CFLAGS -Wwrite-strings"])
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AX_CHECK_COMPILE_FLAG([-Wshadow], [CFLAGS="$CFLAGS -Wshadow"])
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AX_CHECK_COMPILE_FLAG([-Winline], [CFLAGS="$CFLAGS -Winline"])
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AX_CHECK_COMPILE_FLAG([-Wnested-externs], [CFLAGS="$CFLAGS -Wnested-externs"])
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AX_CHECK_COMPILE_FLAG([-Wfloat-equal], [CFLAGS="$CFLAGS -Wfloat-equal"])
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AX_CHECK_COMPILE_FLAG([-Wundef], [CFLAGS="$CFLAGS -Wundef"])
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AX_CHECK_COMPILE_FLAG([-Wendif-labels], [CFLAGS="$CFLAGS -Wendif-labels"])
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AX_CHECK_COMPILE_FLAG([-Wempty-body], [CFLAGS="$CFLAGS -Wempty-body"])
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AX_CHECK_COMPILE_FLAG([-Wcast-align], [CFLAGS="$CFLAGS -Wcast-align"])
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AX_CHECK_COMPILE_FLAG([-Wclobbered], [CFLAGS="$CFLAGS -Wclobbered"])
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AX_CHECK_COMPILE_FLAG([-Wvla], [CFLAGS="$CFLAGS -Wvla"])
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AX_CHECK_COMPILE_FLAG([-Wno-unused-parameter], [CFLAGS="$CFLAGS -Wno-unused-parameter"])
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fi
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if test "x$debug" != "xno"; then
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@ -0,0 +1,74 @@
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# ===========================================================================
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# http://www.gnu.org/software/autoconf-archive/ax_check_compile_flag.html
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# ===========================================================================
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#
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# SYNOPSIS
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#
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# AX_CHECK_COMPILE_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS], [INPUT])
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#
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# DESCRIPTION
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#
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# Check whether the given FLAG works with the current language's compiler
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# or gives an error. (Warnings, however, are ignored)
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#
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# ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on
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# success/failure.
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#
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# If EXTRA-FLAGS is defined, it is added to the current language's default
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# flags (e.g. CFLAGS) when the check is done. The check is thus made with
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# the flags: "CFLAGS EXTRA-FLAGS FLAG". This can for example be used to
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# force the compiler to issue an error when a bad flag is given.
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#
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# INPUT gives an alternative input source to AC_COMPILE_IFELSE.
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#
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# NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this
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# macro in sync with AX_CHECK_{PREPROC,LINK}_FLAG.
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#
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# LICENSE
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#
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# Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
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# Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
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#
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# This program is free software: you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the
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# Free Software Foundation, either version 3 of the License, or (at your
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# option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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# Public License 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 this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# As a special exception, the respective Autoconf Macro's copyright owner
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# gives unlimited permission to copy, distribute and modify the configure
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# scripts that are the output of Autoconf when processing the Macro. You
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# need not follow the terms of the GNU General Public License when using
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# or distributing such scripts, even though portions of the text of the
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# Macro appear in them. The GNU General Public License (GPL) does govern
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# all other use of the material that constitutes the Autoconf Macro.
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#
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# This special exception to the GPL applies to versions of the Autoconf
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# Macro released by the Autoconf Archive. When you make and distribute a
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# modified version of the Autoconf Macro, you may extend this special
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# exception to the GPL to apply to your modified version as well.
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#serial 3
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AC_DEFUN([AX_CHECK_COMPILE_FLAG],
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[AC_PREREQ(2.59)dnl for _AC_LANG_PREFIX
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AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]flags_$4_$1])dnl
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AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [
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ax_check_save_flags=$[]_AC_LANG_PREFIX[]FLAGS
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_AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $4 $1"
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AC_COMPILE_IFELSE([m4_default([$5],[AC_LANG_PROGRAM()])],
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[AS_VAR_SET(CACHEVAR,[yes])],
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[AS_VAR_SET(CACHEVAR,[no])])
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_AC_LANG_PREFIX[]FLAGS=$ax_check_save_flags])
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AS_IF([test x"AS_VAR_GET(CACHEVAR)" = xyes],
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[m4_default([$2], :)],
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[m4_default([$3], :)])
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AS_VAR_POPDEF([CACHEVAR])dnl
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])dnl AX_CHECK_COMPILE_FLAGS
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