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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.2.2/] [config/] [warnings.m4] - Rev 414
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# Autoconf include file defining macros related to compile-time warnings. # Copyright 2004, 2005 Free Software Foundation, Inc. #This file is part of GCC. #GCC 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 2, or (at your option) any later #version. #GCC 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 GCC; see the file COPYING. If not, write to the Free #Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA #02110-1301, USA. # ACX_PROG_CC_WARNING_OPTS([-Wfoo -Wbar -Wbaz]) # Sets @WARN_CFLAGS@ to the subset of the given options which the # compiler accepts. AC_DEFUN([ACX_PROG_CC_WARNING_OPTS], [AC_REQUIRE([AC_PROG_CC])dnl AC_SUBST([WARN_CFLAGS])dnl WARN_CFLAGS= save_CFLAGS="$CFLAGS" for option in $1; do AS_VAR_PUSHDEF([acx_Woption], [acx_cv_prog_cc_warning_$option]) AC_CACHE_CHECK([whether $CC supports $option], acx_Woption, [CFLAGS="$option" AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])], [AS_VAR_SET(acx_Woption, yes)], [AS_VAR_SET(acx_Woption, no)]) ]) AS_IF([test AS_VAR_GET(acx_Woption) = yes], [WARN_CFLAGS="$WARN_CFLAGS${WARN_CFLAGS:+ }$option"]) AS_VAR_POPDEF([acx_Woption])dnl done CFLAGS="$save_CFLAGS" ])# ACX_PROG_CC_WARNING_OPTS # ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([-Wno-long-long ...]) # Sets WARN_PEDANTIC to "-pedantic" + the argument, if the compiler is GCC # and accepts all of those options simultaneously, otherwise to nothing. AC_DEFUN([ACX_PROG_CC_WARNING_ALMOST_PEDANTIC], [AC_REQUIRE([AC_PROG_CC])dnl AC_SUBST([WARN_PEDANTIC])dnl AS_VAR_PUSHDEF([acx_Pedantic], [acx_cv_prog_cc_pedantic_$1])dnl WARN_PEDANTIC= AS_IF([test "$GCC" = yes], [AC_CACHE_CHECK([whether $CC supports -pedantic $1], acx_Pedantic, [save_CFLAGS="$CFLAGS" CFLAGS="-pedantic $1" AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])], [AS_VAR_SET(acx_Pedantic, yes)], [AS_VAR_SET(acx_Pedantic, no)]) CFLAGS="$save_CFLAGS"]) AS_IF([test AS_VAR_GET(acx_Pedantic) = yes], [WARN_PEDANTIC="-pedantic $1"]) ]) AS_VAR_POPDEF([acx_Pedantic])dnl ])# ACX_PROG_CC_WARNING_ALMOST_PEDANTIC # ACX_PROG_CC_WARNINGS_ARE_ERRORS([x.y.z]) # sets WERROR to "-Werror" if the compiler is GCC >=x.y.z, or if # --enable-werror-always was given on the command line, otherwise # to nothing. # If the argument is the word "manual" instead of a version number, # then WERROR will be set to -Werror only if --enable-werror-always # appeared on the configure command line. AC_DEFUN([ACX_PROG_CC_WARNINGS_ARE_ERRORS], [AC_REQUIRE([AC_PROG_CC])dnl AC_SUBST([WERROR])dnl WERROR= AC_ARG_ENABLE(werror-always, AS_HELP_STRING([--enable-werror-always], [enable -Werror despite compiler version]), [], [enable_werror_always=no]) AS_IF([test $enable_werror_always = yes], [WERROR=-Werror], m4_if($1, [manual],, [AS_VAR_PUSHDEF([acx_GCCvers], [acx_cv_prog_cc_gcc_$1_or_newer])dnl AC_CACHE_CHECK([whether $CC is GCC >=$1], acx_GCCvers, [set fnord `echo $1 | tr '.' ' '` shift AC_PREPROC_IFELSE( [#if __GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__ \ < [$]1 * 10000 + [$]2 * 100 + [$]3 #error insufficient #endif], [AS_VAR_SET(acx_GCCvers, yes)], [AS_VAR_SET(acx_GCCvers, no)])]) AS_IF([test AS_VAR_GET(acx_GCCvers) = yes], [WERROR=-WerrorB]) AS_VAR_POPDEF([acx_GCCvers])])) ])# ACX_PROG_CC_WARNINGS_ARE_ERRORS
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