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122 lines
4.9 KiB
122 lines
4.9 KiB
# =========================================================================== |
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# http://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, [A/NA]])] |
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# AX_CXXFLAGS_WARN_ALL [(shellvar [,default, [A/NA]])] |
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# AX_FCFLAGS_WARN_ALL [(shellvar [,default, [A/NA]])] |
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# |
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# DESCRIPTION |
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# |
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# Try to find a compiler option that enables most reasonable warnings. |
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# |
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# For the GNU compiler it will be -Wall (and -ansi -pedantic) The result |
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# is added to the shellvar being CFLAGS, CXXFLAGS, or FCFLAGS by default. |
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# |
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# Currently this macro knows about the GCC, Solaris, Digital Unix, AIX, |
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# HP-UX, IRIX, NEC SX-5 (Super-UX 10), Cray J90 (Unicos 10.0.0.8), and |
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# Intel compilers. For a given compiler, the Fortran flags are much more |
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# experimental than their C equivalents. |
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# |
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# - $1 shell-variable-to-add-to : CFLAGS, CXXFLAGS, or FCFLAGS |
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# - $2 add-value-if-not-found : nothing |
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# - $3 action-if-found : add value to shellvariable |
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# - $4 action-if-not-found : nothing |
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# |
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# NOTE: These macros depend on AX_APPEND_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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# |
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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 14 |
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AC_DEFUN([AX_FLAGS_WARN_ALL],[dnl |
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AS_VAR_PUSHDEF([FLAGS],[_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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AC_CACHE_CHECK([m4_ifval($1,$1,FLAGS) for maximum warnings], |
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VAR,[VAR="no, unknown" |
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ac_save_[]FLAGS="$[]FLAGS" |
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for ac_arg dnl |
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in "-warn all % -warn all" dnl Intel |
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"-pedantic % -Wall" dnl GCC |
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"-xstrconst % -v" dnl Solaris C |
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"-std1 % -verbose -w0 -warnprotos" dnl Digital Unix |
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"-qlanglvl=ansi % -qsrcmsg -qinfo=all:noppt:noppc:noobs:nocnd" dnl AIX |
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"-ansi -ansiE % -fullwarn" dnl IRIX |
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"+ESlit % +w1" dnl HP-UX C |
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"-Xc % -pvctl[,]fullmsg" dnl NEC SX-5 (Super-UX 10) |
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"-h conform % -h msglevel 2" dnl Cray C (Unicos) |
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# |
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do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'` |
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM], |
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[VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break]) |
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done |
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FLAGS="$ac_save_[]FLAGS" |
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]) |
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AS_VAR_POPDEF([FLAGS])dnl |
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AC_REQUIRE([AX_APPEND_FLAG]) |
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case ".$VAR" in |
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.ok|.ok,*) m4_ifvaln($3,$3) ;; |
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.|.no|.no,*) m4_default($4,[m4_ifval($2,[AX_APPEND_FLAG([$2], [$1])])]) ;; |
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*) m4_default($3,[AX_APPEND_FLAG([$VAR], [$1])]) ;; |
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esac |
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AS_VAR_POPDEF([VAR])dnl |
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])dnl AX_FLAGS_WARN_ALL |
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dnl implementation tactics: |
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dnl the for-argument contains a list of options. The first part of |
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dnl these does only exist to detect the compiler - usually it is |
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dnl a global option to enable -ansi or -extrawarnings. All other |
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dnl compilers will fail about it. That was needed since a lot of |
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dnl compilers will give false positives for some option-syntax |
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dnl like -Woption or -Xoption as they think of it is a pass-through |
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dnl to later compile stages or something. The "%" is used as a |
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dnl delimiter. A non-option comment can be given after "%%" marks |
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dnl which will be shown but not added to the respective C/CXXFLAGS. |
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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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]) |
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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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]) |
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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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])
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