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Check for warning flags without no- prefix 

config/:
	* warnings.m4 (ACX_PROG_CC_WARNING_OPTS)
	(ACX_PROG_CC_WARNING_ALMOST_PEDANTIC): Run the test without the
	no- prefix.
libdecnumber/:
	* configure: Regenerate.
libiberty/:
	* configure: Regenerate.
This commit is contained in:
Andreas Schwab 2011-12-19 13:20:23 +00:00
parent f08bc85858
commit a48970970e
2 changed files with 23 additions and 7 deletions
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6
config/ChangeLog
View File

@ -1,3 +1,9 @@
2011-12-19 Andreas Schwab <schwab@linux-m68k.org>
* warnings.m4 (ACX_PROG_CC_WARNING_OPTS)
(ACX_PROG_CC_WARNING_ALMOST_PEDANTIC): Run the test without the
no- prefix.
2011-12-18 Eric Botcazou <ebotcazou@adacore.com>
* acx.m4 (Test for GNAT): Update comment and add quotes in final test.

24
config/warnings.m4
View File

@ -1,6 +1,6 @@
# Autoconf include file defining macros related to compile-time warnings.
# Copyright 2004, 2005, 2007, 2009 Free Software Foundation, Inc.
# Copyright 2004, 2005, 2007, 2009, 2011 Free Software Foundation, Inc.
#This file is part of GCC.
@ -28,7 +28,13 @@ AC_SUBST(acx_Var)dnl
m4_expand_once([acx_Var=
],m4_quote(acx_Var=))dnl
save_CFLAGS="$CFLAGS"
for option in $1; do
for real_option in $1; do
# Do the check with the no- prefix removed since gcc silently
# accepts any -Wno-* option on purpose
case $real_option in
-Wno-*) option=-W`expr $real_option : '-Wno-\(.*\)'` ;;
*) option=$real_option ;;
esac
AS_VAR_PUSHDEF([acx_Woption], [acx_cv_prog_cc_warning_$option])
AC_CACHE_CHECK([whether $CC supports $option], acx_Woption,
[CFLAGS="$option"
@ -37,14 +43,14 @@ for option in $1; do
[AS_VAR_SET(acx_Woption, no)])
])
AS_IF([test AS_VAR_GET(acx_Woption) = yes],
[acx_Var="$acx_Var${acx_Var:+ }$option"])
[acx_Var="$acx_Var${acx_Var:+ }$real_option"])
AS_VAR_POPDEF([acx_Woption])dnl
done
CFLAGS="$save_CFLAGS"
m4_popdef([acx_Var])dnl
])# ACX_PROG_CC_WARNING_OPTS
# ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(WARNINGS, [VARIABLE = WARN_PEDANTIC)
# ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(WARNINGS, [VARIABLE = WARN_PEDANTIC])
# Append to VARIABLE "-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],
@ -53,11 +59,14 @@ m4_pushdef([acx_Var], [m4_default([$2], [WARN_PEDANTIC])])dnl
AC_SUBST(acx_Var)dnl
m4_expand_once([acx_Var=
],m4_quote(acx_Var=))dnl
AS_VAR_PUSHDEF([acx_Pedantic], [acx_cv_prog_cc_pedantic_$1])dnl
# Do the check with the no- prefix removed from the warning options
# since gcc silently accepts any -Wno-* option on purpose
m4_pushdef([acx_Woptions], [m4_bpatsubst([$1], [-Wno-], [-W])])dnl
AS_VAR_PUSHDEF([acx_Pedantic], [acx_cv_prog_cc_pedantic_]acx_Woptions)dnl
AS_IF([test "$GCC" = yes],
[AC_CACHE_CHECK([whether $CC supports -pedantic $1], acx_Pedantic,
[AC_CACHE_CHECK([whether $CC supports -pedantic ]acx_Woptions, acx_Pedantic,
[save_CFLAGS="$CFLAGS"
CFLAGS="-pedantic $1"
CFLAGS="-pedantic acx_Woptions"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])],
[AS_VAR_SET(acx_Pedantic, yes)],
[AS_VAR_SET(acx_Pedantic, no)])
@ -66,6 +75,7 @@ AS_IF([test AS_VAR_GET(acx_Pedantic) = yes],
[acx_Var="$acx_Var${acx_Var:+ }-pedantic $1"])
])
AS_VAR_POPDEF([acx_Pedantic])dnl
m4_popdef([acx_Woptions])dnl
m4_popdef([acx_Var])dnl
])# ACX_PROG_CC_WARNING_ALMOST_PEDANTIC