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# Autoconf include file defining macros related to compile-time warnings.
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# Autoconf include file defining macros related to compile-time warnings.
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# Copyright 2004, 2005, 2007, 2009 Free Software Foundation, Inc.
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# Copyright 2004, 2005, 2007, 2009, 2011 Free Software Foundation, Inc.
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#This file is part of GCC.
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#This file is part of GCC.
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#GCC is free software; you can redistribute it and/or modify it under
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#GCC is free software; you can redistribute it and/or modify it under
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#the terms of the GNU General Public License as published by the Free
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#the terms of the GNU General Public License as published by the Free
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m4_pushdef([acx_Var], [m4_default([$2], [WARN_CFLAGS])])dnl
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m4_pushdef([acx_Var], [m4_default([$2], [WARN_CFLAGS])])dnl
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AC_SUBST(acx_Var)dnl
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AC_SUBST(acx_Var)dnl
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m4_expand_once([acx_Var=
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m4_expand_once([acx_Var=
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],m4_quote(acx_Var=))dnl
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],m4_quote(acx_Var=))dnl
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save_CFLAGS="$CFLAGS"
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save_CFLAGS="$CFLAGS"
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for option in $1; do
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for real_option in $1; do
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# Do the check with the no- prefix removed since gcc silently
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# accepts any -Wno-* option on purpose
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case $real_option in
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-Wno-*) option=-W`expr x$real_option : 'x-Wno-\(.*\)'` ;;
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*) option=$real_option ;;
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esac
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AS_VAR_PUSHDEF([acx_Woption], [acx_cv_prog_cc_warning_$option])
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AS_VAR_PUSHDEF([acx_Woption], [acx_cv_prog_cc_warning_$option])
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AC_CACHE_CHECK([whether $CC supports $option], acx_Woption,
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AC_CACHE_CHECK([whether $CC supports $option], acx_Woption,
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[CFLAGS="$option"
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[CFLAGS="$option"
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])],
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])],
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[AS_VAR_SET(acx_Woption, yes)],
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[AS_VAR_SET(acx_Woption, yes)],
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[AS_VAR_SET(acx_Woption, no)])
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[AS_VAR_SET(acx_Woption, no)])
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])
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])
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AS_IF([test AS_VAR_GET(acx_Woption) = yes],
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AS_IF([test AS_VAR_GET(acx_Woption) = yes],
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[acx_Var="$acx_Var${acx_Var:+ }$option"])
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[acx_Var="$acx_Var${acx_Var:+ }$real_option"])
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AS_VAR_POPDEF([acx_Woption])dnl
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AS_VAR_POPDEF([acx_Woption])dnl
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done
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done
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CFLAGS="$save_CFLAGS"
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CFLAGS="$save_CFLAGS"
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m4_popdef([acx_Var])dnl
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m4_popdef([acx_Var])dnl
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])# ACX_PROG_CC_WARNING_OPTS
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])# ACX_PROG_CC_WARNING_OPTS
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# ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(WARNINGS, [VARIABLE = WARN_PEDANTIC)
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# ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(WARNINGS, [VARIABLE = WARN_PEDANTIC])
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# Append to VARIABLE "-pedantic" + the argument, if the compiler is GCC
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# Append to VARIABLE "-pedantic" + the argument, if the compiler is GCC
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# and accepts all of those options simultaneously, otherwise to nothing.
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# and accepts all of those options simultaneously, otherwise to nothing.
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AC_DEFUN([ACX_PROG_CC_WARNING_ALMOST_PEDANTIC],
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AC_DEFUN([ACX_PROG_CC_WARNING_ALMOST_PEDANTIC],
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[AC_REQUIRE([AC_PROG_CC])dnl
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[AC_REQUIRE([AC_PROG_CC])dnl
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m4_pushdef([acx_Var], [m4_default([$2], [WARN_PEDANTIC])])dnl
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m4_pushdef([acx_Var], [m4_default([$2], [WARN_PEDANTIC])])dnl
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AC_SUBST(acx_Var)dnl
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AC_SUBST(acx_Var)dnl
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m4_expand_once([acx_Var=
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m4_expand_once([acx_Var=
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],m4_quote(acx_Var=))dnl
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],m4_quote(acx_Var=))dnl
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AS_VAR_PUSHDEF([acx_Pedantic], [acx_cv_prog_cc_pedantic_$1])dnl
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# Do the check with the no- prefix removed from the warning options
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# since gcc silently accepts any -Wno-* option on purpose
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m4_pushdef([acx_Woptions], [m4_bpatsubst([$1], [-Wno-], [-W])])dnl
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AS_VAR_PUSHDEF([acx_Pedantic], [acx_cv_prog_cc_pedantic_]acx_Woptions)dnl
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AS_IF([test "$GCC" = yes],
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AS_IF([test "$GCC" = yes],
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[AC_CACHE_CHECK([whether $CC supports -pedantic $1], acx_Pedantic,
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[AC_CACHE_CHECK([whether $CC supports -pedantic ]acx_Woptions, acx_Pedantic,
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[save_CFLAGS="$CFLAGS"
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[save_CFLAGS="$CFLAGS"
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CFLAGS="-pedantic $1"
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CFLAGS="-pedantic acx_Woptions"
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])],
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])],
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[AS_VAR_SET(acx_Pedantic, yes)],
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[AS_VAR_SET(acx_Pedantic, yes)],
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[AS_VAR_SET(acx_Pedantic, no)])
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[AS_VAR_SET(acx_Pedantic, no)])
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CFLAGS="$save_CFLAGS"])
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CFLAGS="$save_CFLAGS"])
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AS_IF([test AS_VAR_GET(acx_Pedantic) = yes],
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AS_IF([test AS_VAR_GET(acx_Pedantic) = yes],
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[acx_Var="$acx_Var${acx_Var:+ }-pedantic $1"])
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[acx_Var="$acx_Var${acx_Var:+ }-pedantic $1"])
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])
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])
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AS_VAR_POPDEF([acx_Pedantic])dnl
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AS_VAR_POPDEF([acx_Pedantic])dnl
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m4_popdef([acx_Woptions])dnl
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m4_popdef([acx_Var])dnl
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m4_popdef([acx_Var])dnl
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])# ACX_PROG_CC_WARNING_ALMOST_PEDANTIC
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])# ACX_PROG_CC_WARNING_ALMOST_PEDANTIC
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# ACX_PROG_CC_WARNINGS_ARE_ERRORS([x.y.z], [VARIABLE = WERROR])
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# ACX_PROG_CC_WARNINGS_ARE_ERRORS([x.y.z], [VARIABLE = WERROR])
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# sets @VARIABLE@ to "-Werror" if the compiler is GCC >=x.y.z, or if
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# sets @VARIABLE@ to "-Werror" if the compiler is GCC >=x.y.z, or if
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