config/

[pf3gnuchains/gcc-fork.git] / config / warnings.m4

diff --git a/config/warnings.m4 b/config/warnings.m4
index 2f44c92..d3358b6 100644 (file)
--- 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 Free Software Foundation, Inc.
+# Copyright 2004, 2005, 2007 Free Software Foundation, Inc.
 
 #This file is part of GCC.
 
@@ -16,16 +16,18 @@
 
 #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, 59 Temple Place - Suite 330, Boston, MA
-#02111-1307, USA.
+#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
+# ACX_PROG_CC_WARNING_OPTS(WARNINGS, [VARIABLE = WARN_CFLAGS)
+#   Sets @VARIABLE@ 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=
+m4_pushdef([acx_Var], [m4_default([$2], [WARN_CFLAGS])])dnl
+AC_SUBST(acx_Var)dnl
+m4_expand_once([acx_Var=
+],m4_quote(acx_Var=))dnl
 save_CFLAGS="$CFLAGS"
 for option in $1; do
   AS_VAR_PUSHDEF([acx_Woption], [acx_cv_prog_cc_warning_$option])
@@ -36,21 +38,24 @@ for option in $1; do
       [AS_VAR_SET(acx_Woption, no)])
   ])
   AS_IF([test AS_VAR_GET(acx_Woption) = yes],
-        [WARN_CFLAGS="$WARN_CFLAGS${WARN_CFLAGS:+ }$option"])
+        [acx_Var="$acx_Var${acx_Var:+ }$option"])
   AS_VAR_POPDEF([acx_Woption])dnl
 done
 CFLAGS="$save_CFLAGS"
+m4_popdef([acx_Var])dnl
 ])# ACX_PROG_CC_WARNING_OPTS
 
-# ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([-Wno-long-long ...])
-#   Sets WARN_PEDANTIC to "-pedantic" + the argument, if the compiler is GCC
+# 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],
 [AC_REQUIRE([AC_PROG_CC])dnl
-AC_SUBST([WARN_PEDANTIC])dnl
+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
-WARN_PEDANTIC=
-AS_IF([test $GCC = yes],
+AS_IF([test "$GCC" = yes],
 [AC_CACHE_CHECK([whether $CC supports -pedantic $1], acx_Pedantic,
 [save_CFLAGS="$CFLAGS"
 CFLAGS="-pedantic $1"
@@ -59,28 +64,31 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])],
    [AS_VAR_SET(acx_Pedantic, no)])
 CFLAGS="$save_CFLAGS"])
 AS_IF([test AS_VAR_GET(acx_Pedantic) = yes],
-      [WARN_PEDANTIC="-pedantic $1"])
+      [acx_Var="$acx_Var${acx_Var:+ }-pedantic $1"])
 ])
 AS_VAR_POPDEF([acx_Pedantic])dnl
+m4_popdef([acx_Var])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
+# ACX_PROG_CC_WARNINGS_ARE_ERRORS([x.y.z], [VARIABLE = WERROR])
+#   sets @VARIABLE@ 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
+#   then @VARIABLE@ 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=
+m4_pushdef([acx_Var], [m4_default([$2], [WERROR])])dnl
+AC_SUBST(acx_Var)dnl
+m4_expand_once([acx_Var=
+],m4_quote(acx_Var=))dnl
 AC_ARG_ENABLE(werror-always, 
     AS_HELP_STRING([--enable-werror-always],
                   [enable -Werror despite compiler version]),
 [], [enable_werror_always=no])
 AS_IF([test $enable_werror_always = yes],
-      [WERROR=-Werror],
+      [acx_Var="$acx_Var${acx_Var:+ }-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,
@@ -94,6 +102,7 @@ AS_IF([test $enable_werror_always = yes],
    [AS_VAR_SET(acx_GCCvers, yes)],
    [AS_VAR_SET(acx_GCCvers, no)])])
  AS_IF([test AS_VAR_GET(acx_GCCvers) = yes],
-       [WERROR=-WerrorB])
-  AS_VAR_POPDEF([acx_GCCvers])]))
+       [acx_Var="$acx_Var${acx_Var:+ }-Werror"])
+  AS_VAR_POPDEF([acx_GCCvers])])
+m4_popdef([acx_Var])dnl
 ])# ACX_PROG_CC_WARNINGS_ARE_ERRORS