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dnl $Id$
dnl
dnl Copyright (c) 2002-2006
dnl The Xfce development team. All rights reserved.
dnl
dnl Written for Xfce by Benedikt Meurer <benny@xfce.org>.
dnl
dnl This program is free software; you can redistribute it and/or modify it
dnl under the terms of the GNU General Public License as published by the Free
dnl Software Foundation; either version 2 of the License, or (at your option)
dnl any later version.
dnl
dnl This program is distributed in the hope that it will be useful, but WITHOUT
dnl ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
dnl FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
dnl more details.
dnl
dnl You should have received a copy of the GNU General Public License along with
dnl this program; if not, write to the Free Software Foundation, Inc., 59 Temple
dnl Place, Suite 330, Boston, MA 02111-1307 USA
dnl
dnl xdt-depends
dnl -----------
dnl Contains M4 macros to check for software dependencies.
dnl Partly based on prior work of the XDG contributors.
dnl
dnl We need recent a autoconf version
AC_PREREQ([2.53])
dnl XDT_SUPPORTED_FLAGS(VAR, FLAGS)
dnl
dnl For each token in FLAGS, checks to be sure the compiler supports
dnl the flag, and if so, adds each one to VAR.
dnl
AC_DEFUN([XDT_SUPPORTED_FLAGS],
[
for flag in $2; do
AC_MSG_CHECKING([if $CC supports $flag])
saved_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $flag"
AC_COMPILE_IFELSE([ ], [flag_supported=yes], [flag_supported=no])
CFLAGS="$saved_CFLAGS"
AC_MSG_RESULT([$flag_supported])
if test "x$flag_supported" = "xyes"; then
$1="$$1 $flag"
fi
done
])
dnl XDT_FEATURE_DEBUG(default_level=minimum)
dnl
AC_DEFUN([XDT_FEATURE_DEBUG],
[
dnl weird indentation to keep output indentation correct
AC_ARG_ENABLE([debug],
AC_HELP_STRING([--enable-debug@<:@=no|minimum|yes|full@:>@],
[Build with debugging support @<:@default=m4_default([$1], [minimum])@:>@])
AC_HELP_STRING([--disable-debug], [Include no debugging support]),
[enable_debug=$enableval], [enable_debug=m4_default([$1], [minimum])])
AC_MSG_CHECKING([whether to build with debugging support])
if test x"$enable_debug" = x"full" -o x"$enable_debug" = x"yes"; then
AC_DEFINE([DEBUG], [1], [Define for debugging support])
xdt_cv_additional_CFLAGS="-DXFCE_DISABLE_DEPRECATED \
-Wall -Wextra \
-Wno-missing-field-initializers \
-Wno-unused-parameter -Wold-style-definition \
-Wdeclaration-after-statement \
-Wmissing-declarations -Wredundant-decls \
-Wmissing-noreturn -Wshadow -Wpointer-arith \
-Wcast-align -Wformat-security \
-Winit-self -Wmissing-include-dirs -Wundef \
-Wmissing-format-attribute -Wnested-externs \
-fstack-protector"
CPPFLAGS="$CPPFLAGS -D_FORTIFY_SOURCE=2"
if test x"$enable_debug" = x"full"; then
AC_DEFINE([DEBUG_TRACE], [1], [Define for tracing support])
xdt_cv_additional_CFLAGS="$xdt_cv_additional_CFLAGS -O0 -g3 -Werror"
CPPFLAGS="$CPPFLAGS -DG_ENABLE_DEBUG"
AC_MSG_RESULT([full])
else
xdt_cv_additional_CFLAGS="$xdt_cv_additional_CFLAGS -g"
AC_MSG_RESULT([yes])
fi
XDT_SUPPORTED_FLAGS([supported_CFLAGS], [$xdt_cv_additional_CFLAGS])
ifelse([$CXX], , , [
dnl FIXME: should test on c++ compiler, but the following line causes
dnl autoconf errors for projects that do not check for a
dnl c++ compiler at all.
dnl AC_LANG_PUSH([C++])
dnl XDT_SUPPORTED_FLAGS([supported_CXXFLAGS], [$xdt_cv_additional_CFLAGS])
dnl AC_LANG_POP()
dnl instead, just use supported_CFLAGS...
supported_CXXFLAGS="$supported_CFLAGS"
])
CFLAGS="$CFLAGS $supported_CFLAGS"
CXXFLAGS="$CXXFLAGS $supported_CXXFLAGS"
else
CPPFLAGS="$CPPFLAGS -DNDEBUG"
if test x"$enable_debug" = x"no"; then
CPPFLAGS="$CPPFLAGS -DG_DISABLE_CAST_CHECKS -DG_DISABLE_ASSERT -DG_DISABLE_CHECKS"
AC_MSG_RESULT([no])
else
AC_MSG_RESULT([minimum])
fi
fi
])
dnl XDT_FEATURE_LINKER_OPTS
dnl
dnl Checks for and enables any special linker optimizations.
dnl
AC_DEFUN([XDT_FEATURE_LINKER_OPTS],
[
AC_ARG_ENABLE([linker-opts],
AC_HELP_STRING([--disable-linker-opts],
[Disable linker optimizations]),
[enable_linker_opts=$enableval], [enable_linker_opts=yes])
if test "x$enable_linker_opts" != "xno"; then
AC_MSG_CHECKING([whether $LD accepts --as-needed])
case `$LD --as-needed -v 2>&1 </dev/null` in
*GNU* | *'with BFD'*)
LDFLAGS="$LDFLAGS -Wl,--as-needed"
AC_MSG_RESULT([yes])
;;
*)
AC_MSG_RESULT([no])
;;
esac
AC_MSG_CHECKING([whether $LD accepts -O1])
case `$LD -O1 -v 2>&1 </dev/null` in
*GNU* | *'with BFD'*)
LDFLAGS="$LDFLAGS -Wl,-O1"
AC_MSG_RESULT([yes])
;;
*)
AC_MSG_RESULT([no])
;;
esac
fi
])
|
