Revision: 7052
Author: ek.kato
Date: Tue May 10 01:14:40 2011
Log: * m4/ax_cflags_gcc_option.m4 : Update to the latest version.
http://code.google.com/p/uim/source/detail?r=7052
Modified:
/libgcroots-trunk/m4/ax_cflags_gcc_option.m4
=======================================
--- /libgcroots-trunk/m4/ax_cflags_gcc_option.m4 Fri Dec 29 03:43:26 2006
+++ /libgcroots-trunk/m4/ax_cflags_gcc_option.m4 Tue May 10 01:14:40 2011
@@ -1,4 +1,6 @@
-##### http://autoconf-archive.cryp.to/ax_cflags_gcc_option.html
+#
===========================================================================
+# http://www.gnu.org/software/autoconf-archive/ax_cflags_gcc_option.html
+#
===========================================================================
#
# SYNOPSIS
#
@@ -6,109 +8,100 @@
#
# DESCRIPTION
#
-# AX_CFLAGS_GCC_OPTION(-fvomit-frame) would show a message as like
-# "checking CFLAGS for gcc -fvomit-frame ... yes" and adds the
+# AX_CFLAGS_GCC_OPTION(-fomit-frame-pointer) would show a message like
+# "checking CFLAGS for gcc -fomit-frame-pointer ... yes" and add the
# optionflag to CFLAGS if it is understood. You can override the
-# shellvar-default of CFLAGS of course. The order of arguments stems
-# from the explicit macros like AX_CFLAGS_WARN_ALL.
-#
-# The cousin AX_CXXFLAGS_GCC_OPTION would check for an option to add
-# to CXXFLAGS - and it uses the autoconf setup for C++ instead of C
-# (since it is possible to use different compilers for C and C++).
+# shellvar-default of CFLAGS of course. The order of arguments stems from
+# the explicit macros like AX_CFLAGS_WARN_ALL.
+#
+# The cousin AX_CXXFLAGS_GCC_OPTION would check for an option to add to
+# CXXFLAGS - and it uses the autoconf setup for C++ instead of C (since
it
+# is possible to use different compilers for C and C++).
#
# The macro is a lot simpler than any special AX_CFLAGS_* macro (or
-# ac_cxx_rtti.m4 macro) but allows to check for arbitrary options.
-# However, if you use this macro in a few places, it would be great
-# if you would make up a new function-macro and submit it to the
-# ac-archive.
+# ax_cxx_rtti.m4 macro) but allows to check for arbitrary options.
+# However, if you use this macro in a few places, it would be great if
you
+# would make up a new function-macro and submit it to the ac-archive.
#
# - $1 option-to-check-for : required ("-option" as non-value)
# - $2 shell-variable-to-add-to : CFLAGS (or CXXFLAGS in the other
case)
# - $3 action-if-found : add value to shellvariable
# - $4 action-if-not-found : nothing
#
-# note: in earlier versions, $1-$2 were swapped. We try to detect the
-# situation and accept a $2=~/-/ as being the old
-# option-to-check-for.
-#
-# also: there are other variants that emerged from the original macro
-# variant which did just test an option to be possibly added.
-# However, some compilers accept an option silently, or possibly for
-# just another option that was not intended. Therefore, we have to do
-# a generic test for a compiler family. For gcc we check "-pedantic"
-# being accepted which is also understood by compilers who just want
-# to be compatible with gcc even when not being made from gcc
-# sources.
-#
-# see also:
-#
-# AX_CFLAGS_SUN_OPTION AX_CFLAGS_HPUX_OPTION
-# AX_CFLAGS_AIX_OPTION AX_CFLAGS_IRIX_OPTION
-#
-# LAST MODIFICATION
-#
-# 2006-10-13
-#
-# COPYLEFT
-#
-# Copyright (c) 2006 Guido U. Draheim <[email protected]>
-#
-# This program 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 of the
-# License, or (at your option) any later version.
+# Note: in earlier versions, $1-$2 were swapped. We try to detect the
+# situation and accept a $2=~/-/ as being the old option-to-check-for.
+#
+# There are other variants that emerged from the original macro variant
+# which did just test an option to be possibly added. However, some
+# compilers accept an option silently, or possibly for just another
option
+# that was not intended. Therefore, we have to do a generic test for a
+# compiler family. For gcc we check "-pedantic" being accepted which is
+# also understood by compilers who just want to be compatible with gcc
+# even when not being made from gcc sources.
+#
+# See also: AX_CFLAGS_SUN_OPTION, AX_CFLAGS_HPUX_OPTION,
+# AX_CFLAGS_AIX_OPTION, and AX_CFLAGS_IRIX_OPTION.
+#
+# LICENSE
+#
+# Copyright (c) 2008 Guido U. Draheim <[email protected]>
+#
+# This program 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 3 of the License, or (at your
+# option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-# General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
-# 02111-1307, USA.
-#
-# As a special exception, the respective Autoconf Macro's copyright
-# owner gives unlimited permission to copy, distribute and modify the
-# configure scripts that are the output of Autoconf when processing
-# the Macro. You need not follow the terms of the GNU General Public
-# License when using or distributing such scripts, even though
-# portions of the text of the Macro appear in them. The GNU General
-# Public License (GPL) does govern all other use of the material that
-# constitutes the Autoconf Macro.
-#
-# This special exception to the GPL applies to versions of the
-# Autoconf Macro released by the Autoconf Macro Archive. When you
-# make and distribute a modified version of the Autoconf Macro, you
-# may extend this special exception to the GPL to apply to your
-# modified version as well.
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General
+# Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+# As a special exception, the respective Autoconf Macro's copyright owner
+# gives unlimited permission to copy, distribute and modify the configure
+# scripts that are the output of Autoconf when processing the Macro. You
+# need not follow the terms of the GNU General Public License when using
+# or distributing such scripts, even though portions of the text of the
+# Macro appear in them. The GNU General Public License (GPL) does govern
+# all other use of the material that constitutes the Autoconf Macro.
+#
+# This special exception to the GPL applies to versions of the Autoconf
+# Macro released by the Autoconf Archive. When you make and distribute a
+# modified version of the Autoconf Macro, you may extend this special
+# exception to the GPL to apply to your modified version as well.
+
+#serial 13
AC_DEFUN([AX_CFLAGS_GCC_OPTION_OLD], [dnl
AS_VAR_PUSHDEF([FLAGS],[CFLAGS])dnl
-AS_VAR_PUSHDEF([VAR],[ac_cv_cflags_gcc_option_$2])dnl
+AS_VAR_PUSHDEF([VAR],[ax_cv_cflags_gcc_option_$2])dnl
AC_CACHE_CHECK([m4_ifval($1,$1,FLAGS) for gcc m4_ifval($2,$2,-option)],
-VAR,[VAR="no, unknown"
+VAR,[AS_VAR_SET([VAR],["no, unknown"])
AC_LANG_SAVE
AC_LANG_C
ac_save_[]FLAGS="$[]FLAGS"
for ac_arg dnl
-in "-pedantic % m4_ifval($2,$2,-option)" dnl GCC
+in "-pedantic -Werror % m4_ifval($2,$2,-option)" dnl GCC
+ "-pedantic % m4_ifval($2,$2,-option) %% no, obsolete" dnl new GCC
#
do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
AC_TRY_COMPILE([],[return 0;],
- [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
+ [AS_VAR_SET([VAR],[`echo $ac_arg | sed -e 's,.*% *,,'`]); break])
done
FLAGS="$ac_save_[]FLAGS"
AC_LANG_RESTORE
])
-case ".$VAR" in
+m4_ifdef([AS_VAR_COPY],[AS_VAR_COPY([var],[VAR])],[var=AS_VAR_GET([VAR])])
+case ".$var" in
.ok|.ok,*) m4_ifvaln($3,$3) ;;
.|.no|.no,*) m4_ifvaln($4,$4) ;;
*) m4_ifvaln($3,$3,[
- if echo " $[]m4_ifval($1,$1,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
- then AC_RUN_LOG([: m4_ifval($1,$1,FLAGS) does contain $VAR])
- else AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"])
- m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"
+ if echo " $[]m4_ifval($1,$1,FLAGS) " | grep " $var " 2>&1 >/dev/null
+ then AC_RUN_LOG([: m4_ifval($1,$1,FLAGS) does contain $var])
+ else AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $var"])
+ m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $var"
fi ]) ;;
esac
AS_VAR_POPDEF([VAR])dnl
@@ -120,30 +113,32 @@
AC_DEFUN([AX_CXXFLAGS_GCC_OPTION_OLD], [dnl
AS_VAR_PUSHDEF([FLAGS],[CXXFLAGS])dnl
-AS_VAR_PUSHDEF([VAR],[ac_cv_cxxflags_gcc_option_$2])dnl
+AS_VAR_PUSHDEF([VAR],[ax_cv_cxxflags_gcc_option_$2])dnl
AC_CACHE_CHECK([m4_ifval($1,$1,FLAGS) for gcc m4_ifval($2,$2,-option)],
-VAR,[VAR="no, unknown"
+VAR,[AS_VAR_SET([VAR],["no, unknown"])
AC_LANG_SAVE
- AC_LANG_CXX
+ AC_LANG_CPLUSPLUS
ac_save_[]FLAGS="$[]FLAGS"
for ac_arg dnl
-in "-pedantic % m4_ifval($2,$2,-option)" dnl GCC
+in "-pedantic -Werror % m4_ifval($2,$2,-option)" dnl GCC
+ "-pedantic % m4_ifval($2,$2,-option) %% no, obsolete" dnl new GCC
#
do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
AC_TRY_COMPILE([],[return 0;],
- [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
+ [AS_VAR_SET([VAR],[`echo $ac_arg | sed -e 's,.*% *,,'`]); break])
done
FLAGS="$ac_save_[]FLAGS"
AC_LANG_RESTORE
])
-case ".$VAR" in
+m4_ifdef([AS_VAR_COPY],[AS_VAR_COPY([var],[VAR])],[var=AS_VAR_GET([VAR])])
+case ".$var" in
.ok|.ok,*) m4_ifvaln($3,$3) ;;
.|.no|.no,*) m4_ifvaln($4,$4) ;;
*) m4_ifvaln($3,$3,[
- if echo " $[]m4_ifval($1,$1,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
- then AC_RUN_LOG([: m4_ifval($1,$1,FLAGS) does contain $VAR])
- else AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"])
- m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"
+ if echo " $[]m4_ifval($1,$1,FLAGS) " | grep " $var " 2>&1 >/dev/null
+ then AC_RUN_LOG([: m4_ifval($1,$1,FLAGS) does contain $var])
+ else AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $var"])
+ m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $var"
fi ]) ;;
esac
AS_VAR_POPDEF([VAR])dnl
@@ -154,30 +149,32 @@
AC_DEFUN([AX_CFLAGS_GCC_OPTION_NEW], [dnl
AS_VAR_PUSHDEF([FLAGS],[CFLAGS])dnl
-AS_VAR_PUSHDEF([VAR],[ac_cv_cflags_gcc_option_$1])dnl
+AS_VAR_PUSHDEF([VAR],[ax_cv_cflags_gcc_option_$1])dnl
AC_CACHE_CHECK([m4_ifval($2,$2,FLAGS) for gcc m4_ifval($1,$1,-option)],
-VAR,[VAR="no, unknown"
+VAR,[AS_VAR_SET([VAR],["no, unknown"])
AC_LANG_SAVE
AC_LANG_C
ac_save_[]FLAGS="$[]FLAGS"
for ac_arg dnl
-in "-pedantic % m4_ifval($1,$1,-option)" dnl GCC
+in "-pedantic -Werror % m4_ifval($1,$1,-option)" dnl GCC
+ "-pedantic % m4_ifval($1,$1,-option) %% no, obsolete" dnl new GCC
#
do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
AC_TRY_COMPILE([],[return 0;],
- [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
+ [AS_VAR_SET([VAR],[`echo $ac_arg | sed -e 's,.*% *,,'`]); break])
done
FLAGS="$ac_save_[]FLAGS"
AC_LANG_RESTORE
])
-case ".$VAR" in
+m4_ifdef([AS_VAR_COPY],[AS_VAR_COPY([var],[VAR])],[var=AS_VAR_GET([VAR])])
+case ".$var" in
.ok|.ok,*) m4_ifvaln($3,$3) ;;
.|.no|.no,*) m4_ifvaln($4,$4) ;;
*) m4_ifvaln($3,$3,[
- if echo " $[]m4_ifval($2,$2,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
- then AC_RUN_LOG([: m4_ifval($2,$2,FLAGS) does contain $VAR])
- else AC_RUN_LOG([: m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"])
- m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"
+ if echo " $[]m4_ifval($2,$2,FLAGS) " | grep " $var " 2>&1 >/dev/null
+ then AC_RUN_LOG([: m4_ifval($2,$2,FLAGS) does contain $var])
+ else AC_RUN_LOG([: m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $var"])
+ m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $var"
fi ]) ;;
esac
AS_VAR_POPDEF([VAR])dnl
@@ -189,30 +186,32 @@
AC_DEFUN([AX_CXXFLAGS_GCC_OPTION_NEW], [dnl
AS_VAR_PUSHDEF([FLAGS],[CXXFLAGS])dnl
-AS_VAR_PUSHDEF([VAR],[ac_cv_cxxflags_gcc_option_$1])dnl
+AS_VAR_PUSHDEF([VAR],[ax_cv_cxxflags_gcc_option_$1])dnl
AC_CACHE_CHECK([m4_ifval($2,$2,FLAGS) for gcc m4_ifval($1,$1,-option)],
-VAR,[VAR="no, unknown"
+VAR,[AS_VAR_SET([VAR],["no, unknown"])
AC_LANG_SAVE
- AC_LANG_CXX
+ AC_LANG_CPLUSPLUS
ac_save_[]FLAGS="$[]FLAGS"
for ac_arg dnl
-in "-pedantic % m4_ifval($1,$1,-option)" dnl GCC
+in "-pedantic -Werror % m4_ifval($1,$1,-option)" dnl GCC
+ "-pedantic % m4_ifval($1,$1,-option) %% no, obsolete" dnl new GCC
#
do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
AC_TRY_COMPILE([],[return 0;],
- [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
+ [AS_VAR_SET([VAR],[`echo $ac_arg | sed -e 's,.*% *,,'`]); break])
done
FLAGS="$ac_save_[]FLAGS"
AC_LANG_RESTORE
])
-case ".$VAR" in
+m4_ifdef([AS_VAR_COPY],[AS_VAR_COPY([var],[VAR])],[var=AS_VAR_GET([VAR])])
+case ".$var" in
.ok|.ok,*) m4_ifvaln($3,$3) ;;
.|.no|.no,*) m4_ifvaln($4,$4) ;;
*) m4_ifvaln($3,$3,[
- if echo " $[]m4_ifval($2,$2,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
- then AC_RUN_LOG([: m4_ifval($2,$2,FLAGS) does contain $VAR])
- else AC_RUN_LOG([: m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"])
- m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"
+ if echo " $[]m4_ifval($2,$2,FLAGS) " | grep " $var " 2>&1 >/dev/null
+ then AC_RUN_LOG([: m4_ifval($2,$2,FLAGS) does contain $var])
+ else AC_RUN_LOG([: m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $var"])
+ m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $var"
fi ]) ;;
esac
AS_VAR_POPDEF([VAR])dnl
