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authorAndreas Schwab <schwab@linux-m68k.org>2011-12-19 13:20:24 +0000
committerAndreas Schwab <schwab@linux-m68k.org>2011-12-19 13:20:24 +0000
commita53e62cf5654e07a8d78ce5c8f7d386565c2c17d (patch)
tree287f12638e706f29a2edb0a08803c843f258b274 /config
parent049682ba03cd30cc582c8c485f6a61ca8a0594e5 (diff)
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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.
Diffstat (limited to 'config')
-rw-r--r--config/ChangeLog6
-rw-r--r--config/warnings.m424
2 files changed, 23 insertions, 7 deletions
diff --git a/config/ChangeLog b/config/ChangeLog
index da5fe51..2d06a8d 100644
--- a/config/ChangeLog
+++ b/config/ChangeLog
@@ -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.
diff --git a/config/warnings.m4 b/config/warnings.m4
index 3801c85..292e5a4 100644
--- a/config/warnings.m4
+++ b/config/warnings.m4
@@ -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