forked from openkylin/imagemagick
159 lines
5.8 KiB
Plaintext
159 lines
5.8 KiB
Plaintext
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# ===========================================================================
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# https://www.gnu.org/software/autoconf-archive/ax_cflags_warn_all.html
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# ===========================================================================
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#
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# SYNOPSIS
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#
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# AX_CFLAGS_WARN_ALL [(shellvar[, default[, action-if-found[, action-if-not-found]]])]
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# AX_CXXFLAGS_WARN_ALL [(shellvar[, default[, action-if-found[, action-if-not-found]]])]
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# AX_FCFLAGS_WARN_ALL [(shellvar[, default[, action-if-found[, action-if-not-found]]])]
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#
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# DESCRIPTION
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#
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# Specify compiler options that enable most reasonable warnings. For the
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# GNU Compiler Collection (GCC), for example, it will be "-Wall". The
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# result is added to shellvar, one of CFLAGS, CXXFLAGS or FCFLAGS if the
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# first parameter is not specified.
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#
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# Each of these macros accepts the following optional arguments:
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#
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# - $1 - shellvar
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# shell variable to use (CFLAGS, CXXFLAGS or FCFLAGS if not
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# specified, depending on macro)
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#
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# - $2 - default
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# value to use for flags if compiler vendor cannot be determined (by
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# default, "")
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#
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# - $3 - action-if-found
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# action to take if the compiler vendor has been successfully
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# determined (by default, add the appropriate compiler flags to
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# shellvar)
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#
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# - $4 - action-if-not-found
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# action to take if the compiler vendor has not been determined or
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# is unknown (by default, add the default flags, or "" if not
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# specified, to shellvar)
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#
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# These macros use AX_COMPILER_VENDOR to determine which flags should be
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# returned for a given compiler. Not all compilers currently have flags
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# defined for them; patches are welcome. If need be, compiler flags may
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# be made language-dependent: use a construct like the following:
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#
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# [vendor_name], [m4_if(_AC_LANG_PREFIX,[C], VAR="--relevant-c-flags",dnl
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# m4_if(_AC_LANG_PREFIX,[CXX], VAR="--relevant-c++-flags",dnl
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# m4_if(_AC_LANG_PREFIX,[FC], VAR="--relevant-fortran-flags",dnl
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# VAR="$2"; FOUND="no")))],
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#
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# Note: These macros also depend on AX_PREPEND_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) 2010 Rhys Ulerich <rhys.ulerich@gmail.com>
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# Copyright (c) 2018 John Zaitseff <J.Zaitseff@zap.org.au>
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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 <https://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 25
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AC_DEFUN([AX_FLAGS_WARN_ALL], [
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AX_REQUIRE_DEFINED([AX_PREPEND_FLAG])dnl
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AC_REQUIRE([AX_COMPILER_VENDOR])dnl
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AS_VAR_PUSHDEF([FLAGS], [m4_default($1,_AC_LANG_PREFIX[]FLAGS)])dnl
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AS_VAR_PUSHDEF([VAR], [ac_cv_[]_AC_LANG_ABBREV[]flags_warn_all])dnl
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AS_VAR_PUSHDEF([FOUND], [ac_save_[]_AC_LANG_ABBREV[]flags_warn_all_found])dnl
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AC_CACHE_CHECK([FLAGS for most reasonable warnings], VAR, [
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VAR=""
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FOUND="yes"
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dnl Cases are listed in the order found in ax_compiler_vendor.m4
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AS_CASE("$ax_cv_[]_AC_LANG_ABBREV[]_compiler_vendor",
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[intel], [VAR="-w2"],
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[ibm], [VAR="-qsrcmsg -qinfo=all:noppt:noppc:noobs:nocnd"],
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[pathscale], [],
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[clang], [VAR="-Wall"],
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[cray], [VAR="-h msglevel 2"],
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[fujitsu], [],
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[sdcc], [],
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[sx], [VAR="-pvctl[,]fullmsg"],
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[portland], [],
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[gnu], [VAR="-Wall"],
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[sun], [VAR="-v"],
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[hp], [VAR="+w1"],
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[dec], [VAR="-verbose -w0 -warnprotos"],
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[borland], [],
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[comeau], [],
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[kai], [],
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[lcc], [],
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[sgi], [VAR="-fullwarn"],
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[microsoft], [],
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[metrowerks], [],
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[watcom], [],
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[tcc], [],
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[unknown], [
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VAR="$2"
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FOUND="no"
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],
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[
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AC_MSG_WARN([Unknown compiler vendor returned by [AX_COMPILER_VENDOR]])
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VAR="$2"
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FOUND="no"
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]
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)
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AS_IF([test "x$FOUND" = "xyes"], [dnl
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m4_default($3, [AS_IF([test "x$VAR" != "x"], [AX_PREPEND_FLAG([$VAR], [FLAGS])])])
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], [dnl
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m4_default($4, [m4_ifval($2, [AX_PREPEND_FLAG([$VAR], [FLAGS])], [true])])
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])dnl
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])dnl
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AS_VAR_POPDEF([FOUND])dnl
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AS_VAR_POPDEF([VAR])dnl
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AS_VAR_POPDEF([FLAGS])dnl
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])dnl AX_FLAGS_WARN_ALL
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AC_DEFUN([AX_CFLAGS_WARN_ALL], [dnl
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AC_LANG_PUSH([C])
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AX_FLAGS_WARN_ALL([$1], [$2], [$3], [$4])
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AC_LANG_POP([C])
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])dnl
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AC_DEFUN([AX_CXXFLAGS_WARN_ALL], [dnl
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AC_LANG_PUSH([C++])
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AX_FLAGS_WARN_ALL([$1], [$2], [$3], [$4])
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AC_LANG_POP([C++])
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])dnl
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AC_DEFUN([AX_FCFLAGS_WARN_ALL], [dnl
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AC_LANG_PUSH([Fortran])
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AX_FLAGS_WARN_ALL([$1], [$2], [$3], [$4])
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AC_LANG_POP([Fortran])
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])dnl
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