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kc3-lang/libffi/m4/ax_cflags_warn_all.m4
Anthony Green
- m4/ax_cflags_warn_all.m4
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# =========================================================================== # https://www.gnu.org/software/autoconf-archive/ax_cflags_warn_all.html # =========================================================================== # # SYNOPSIS # # AX_CFLAGS_WARN_ALL [(shellvar[, default[, action-if-found[, action-if-not-found]]])] # AX_CXXFLAGS_WARN_ALL [(shellvar[, default[, action-if-found[, action-if-not-found]]])] # AX_FCFLAGS_WARN_ALL [(shellvar[, default[, action-if-found[, action-if-not-found]]])] # # DESCRIPTION # # Specify compiler options that enable most reasonable warnings. For the # GNU Compiler Collection (GCC), for example, it will be "-Wall". The # result is added to shellvar, one of CFLAGS, CXXFLAGS or FCFLAGS if the # first parameter is not specified. # # Each of these macros accepts the following optional arguments: # # - $1 - shellvar # shell variable to use (CFLAGS, CXXFLAGS or FCFLAGS if not # specified, depending on macro) # # - $2 - default # value to use for flags if compiler vendor cannot be determined (by # default, "") # # - $3 - action-if-found # action to take if the compiler vendor has been successfully # determined (by default, add the appropriate compiler flags to # shellvar) # # - $4 - action-if-not-found # action to take if the compiler vendor has not been determined or # is unknown (by default, add the default flags, or "" if not # specified, to shellvar) # # These macros use AX_COMPILER_VENDOR to determine which flags should be # returned for a given compiler. Not all compilers currently have flags # defined for them; patches are welcome. If need be, compiler flags may # be made language-dependent: use a construct like the following: # # [vendor_name], [m4_if(_AC_LANG_PREFIX,[C], VAR="--relevant-c-flags",dnl # m4_if(_AC_LANG_PREFIX,[CXX], VAR="--relevant-c++-flags",dnl # m4_if(_AC_LANG_PREFIX,[FC], VAR="--relevant-fortran-flags",dnl # VAR="$2"; FOUND="no")))], # # Note: These macros also depend on AX_PREPEND_FLAG. # # LICENSE # # Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de> # Copyright (c) 2010 Rhys Ulerich <rhys.ulerich@gmail.com> # Copyright (c) 2018 John Zaitseff <J.Zaitseff@zap.org.au> # # 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 the # Free Software Foundation; either version 3 of the License, or (at your # option) any later version. # # This program 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 General # Public License for more details. # # You should have received a copy of the GNU General Public License along # with this program. If not, see <https://www.gnu.org/licenses/>. # # As a special exception, the respective Autoconf Macro's copyright owner # gives unlimited permission to copy, distribute and modify the configure # scripts that are the output of Autoconf when processing the Macro. You # need not follow the terms of the GNU General Public License when using # or distributing such scripts, even though portions of the text of the # Macro appear in them. The GNU General Public License (GPL) does govern # all other use of the material that constitutes the Autoconf Macro. # # This special exception to the GPL applies to versions of the Autoconf # Macro released by the Autoconf Archive. When you make and distribute a # modified version of the Autoconf Macro, you may extend this special # exception to the GPL to apply to your modified version as well. #serial 25 AC_DEFUN([AX_FLAGS_WARN_ALL], [ AX_REQUIRE_DEFINED([AX_PREPEND_FLAG])dnl AC_REQUIRE([AX_COMPILER_VENDOR])dnl AS_VAR_PUSHDEF([FLAGS], [m4_default($1,_AC_LANG_PREFIX[]FLAGS)])dnl AS_VAR_PUSHDEF([VAR], [ac_cv_[]_AC_LANG_ABBREV[]flags_warn_all])dnl AS_VAR_PUSHDEF([FOUND], [ac_save_[]_AC_LANG_ABBREV[]flags_warn_all_found])dnl AC_CACHE_CHECK([FLAGS for most reasonable warnings], VAR, [ VAR="" FOUND="yes" dnl Cases are listed in the order found in ax_compiler_vendor.m4 AS_CASE("$ax_cv_[]_AC_LANG_ABBREV[]_compiler_vendor", [intel], [VAR="-w2"], [ibm], [VAR="-qsrcmsg -qinfo=all:noppt:noppc:noobs:nocnd"], [pathscale], [], [clang], [VAR="-Wall"], [cray], [VAR="-h msglevel 2"], [fujitsu], [], [sdcc], [], [sx], [VAR="-pvctl[,]fullmsg"], [portland], [], [gnu], [VAR="-Wall"], [sun], [VAR="-v"], [hp], [VAR="+w1"], [dec], [VAR="-verbose -w0 -warnprotos"], [borland], [], [comeau], [], [kai], [], [lcc], [], [sgi], [VAR="-fullwarn"], [microsoft], [], [metrowerks], [], [watcom], [], [tcc], [], [unknown], [ VAR="$2" FOUND="no" ], [ AC_MSG_WARN([Unknown compiler vendor returned by [AX_COMPILER_VENDOR]]) VAR="$2" FOUND="no" ] ) AS_IF([test "x$FOUND" = "xyes"], [dnl m4_default($3, [AS_IF([test "x$VAR" != "x"], [AX_PREPEND_FLAG([$VAR], [FLAGS])])]) ], [dnl m4_default($4, [m4_ifval($2, [AX_PREPEND_FLAG([$VAR], [FLAGS])], [true])]) ])dnl ])dnl AS_VAR_POPDEF([FOUND])dnl AS_VAR_POPDEF([VAR])dnl AS_VAR_POPDEF([FLAGS])dnl ])dnl AX_FLAGS_WARN_ALL AC_DEFUN([AX_CFLAGS_WARN_ALL], [dnl AC_LANG_PUSH([C]) AX_FLAGS_WARN_ALL([$1], [$2], [$3], [$4]) AC_LANG_POP([C]) ])dnl AC_DEFUN([AX_CXXFLAGS_WARN_ALL], [dnl AC_LANG_PUSH([C++]) AX_FLAGS_WARN_ALL([$1], [$2], [$3], [$4]) AC_LANG_POP([C++]) ])dnl AC_DEFUN([AX_FCFLAGS_WARN_ALL], [dnl AC_LANG_PUSH([Fortran]) AX_FLAGS_WARN_ALL([$1], [$2], [$3], [$4]) AC_LANG_POP([Fortran]) ])dnl