# Autoconf include file defining macros related to compile-time warnings.
-# Copyright 2004, 2005 Free Software Foundation, Inc.
+# Copyright 2004, 2005, 2007, 2009 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
+#Software Foundation; either version 3, or (at your option) any later
#version.
#GCC is distributed in the hope that it will be useful, but WITHOUT
#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.
+#along with GCC; see the file COPYING3. If not see
+#<http://www.gnu.org/licenses/>.
-# 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])
[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],
[AC_CACHE_CHECK([whether $CC supports -pedantic $1], acx_Pedantic,
[save_CFLAGS="$CFLAGS"
[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 >=$1], acx_GCCvers,
[AS_VAR_SET(acx_GCCvers, yes)],
[AS_VAR_SET(acx_GCCvers, no)])])
AS_IF([test AS_VAR_GET(acx_GCCvers) = yes],
- [WERROR=-WerrorB])
- AS_VAR_POPDEF([acx_GCCvers])]))
+ [acx_Var="$acx_Var${acx_Var:+ }-Werror"])
+ AS_VAR_POPDEF([acx_GCCvers])])
+m4_popdef([acx_Var])dnl
])# ACX_PROG_CC_WARNINGS_ARE_ERRORS