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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
dnl it under the terms of the GNU General Public License as published by
dnl the Free Software Foundation; either version 2 of the License, or
dnl (at your option) any later version.
dnl
dnl This program is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
dnl GNU General Public License for more details.
dnl
dnl You should have received a copy of the GNU General Public License along
dnl with this program; if not, write to the Free Software Foundation, Inc.,
dnl 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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"$enable_debug" = x"yes"; then
AC_DEFINE([DEBUG], [1], [Define for debugging support])
xdt_cv_additional_CFLAGS="-DXFCE_DISABLE_DEPRECATED \
-Wall -Wextra \
-Wno-missing-field-initializers \
-Wno-unused-parameter -Wold-style-definition \
-Wdeclaration-after-statement \
-Wmissing-declarations \
-Wmissing-noreturn -Wshadow -Wpointer-arith \
-Wcast-align -Wformat-security \
-Winit-self -Wmissing-include-dirs -Wundef \
-Wmissing-format-attribute -Wnested-externs"
CPPFLAGS="$CPPFLAGS -D_FORTIFY_SOURCE=2"
if test x`uname` = x"Linux"; then
xdt_cv_additional_CFLAGS="$xdt_cv_additional_CFLAGS -fstack-protector"
fi
dnl # signal.h inline is crapy on openbsd
if test x`uname` != x"OpenBSD"; then
xdt_cv_additional_CFLAGS="$xdt_cv_additional_CFLAGS -Wredundant-decls"
fi
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 -g -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 don't 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_VISIBILITY()
dnl
dnl Checks to see if the compiler supports the 'visibility' attribute
dnl If so, adds -DHAVE_GNUC_VISIBILTY to CPPFLAGS. Also sets the
dnl automake conditional HAVE_GNUC_VISIBILITY.
dnl
AC_DEFUN([XDT_FEATURE_VISIBILITY],
[
AC_ARG_ENABLE([visibility],
AC_HELP_STRING([--disable-visibility],
[Don't use ELF visibility attributes]),
[enable_visibility=$enableval], [enable_visibility=yes])
have_gnuc_visibility=no
if test "x$enable_visibility" != "xno"; then
XDT_SUPPORTED_FLAGS([xdt_vis_test_cflags], [-Wall -Werror -Wno-unused-parameter])
saved_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $xdt_vis_test_cflags"
AC_MSG_CHECKING([whether $CC supports the GNUC visibility attribute])
AC_COMPILE_IFELSE(AC_LANG_SOURCE(
[
void test_default (void);
void test_hidden (void);
void __attribute__ ((visibility("default"))) test_default (void) {}
void __attribute__ ((visibility("hidden"))) test_hidden (void) {}
int main (int argc, char **argv) {
test_default ();
test_hidden ();
return 0;
}
]),
[
have_gnuc_visibility=yes
AC_MSG_RESULT([yes])
],
[
AC_MSG_RESULT([no])
])
CFLAGS="$saved_CFLAGS"
fi
if test "x$have_gnuc_visibility" = "xyes"; then
CPPFLAGS="$CPPFLAGS -DHAVE_GNUC_VISIBILITY"
xdt_vis_hidden_cflags=""
XDT_SUPPORTED_FLAGS([xdt_vis_hidden_cflags], [-xldscope=hidden])
if test "x$xdt_vis_hidden_cflags" = "x"; then
XDT_SUPPORTED_FLAGS([xdt_vis_hidden_cflags], [-fvisibility=hidden])
fi
CFLAGS="$CFLAGS $xdt_vis_hidden_cflags"
fi
AM_CONDITIONAL([HAVE_GNUC_VISIBILITY], [test "x$have_gnuc_visibility" = "xyes"])
])
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
if test x`uname` != x"OpenBSD"; 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
fi
AC_MSG_CHECKING([whether $LD accepts -O1])
case `$LD -O1 -v 2>&1 </dev/null` in
*GNU* | *'with BFD'*)
LDFLAGS="$LDFLAGS -Wl,-O1"
AC_MSG_RESULT([yes])
;;
*)
AC_MSG_RESULT([no])
;;
esac
fi
])
dnl BM_DEBUG_SUPPORT()
dnl
AC_DEFUN([BM_DEBUG_SUPPORT],
[
dnl # --enable-debug
AC_REQUIRE([XDT_FEATURE_DEBUG])
dnl # --enable-profiling
AC_ARG_ENABLE([profiling],
AC_HELP_STRING([--enable-profiling],
[Generate extra code to write profile information])
AC_HELP_STRING([--disable-profiling],
[No extra code for profiling (default)]),
[], [enable_profiling=no])
AC_MSG_CHECKING([whether to build with profiling support])
if test x"$enable_profiling" != x"no"; then
CFLAGS="$CFLAGS -pg"
LDFLAGS="$LDFLAGS -pg"
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no])
fi
dnl # --enable-gcov
AC_ARG_ENABLE([gcov],
AC_HELP_STRING([--enable-gcov],
[compile with coverage profiling instrumentation (gcc only)])
AC_HELP_STRING([--disable-gcov],
[do not generate coverage profiling instrumentation (default)]),
[], [enable_gcov=no])
AC_MSG_CHECKING([whether to compile with coverage profiling instrumentation])
if test x"$enable_gcov" != x"no"; then
CFLAGS="$CFLAGS -fprofile-arcs -ftest-coverage"
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no])
fi
dnl # --disable-asserts
AC_ARG_ENABLE([asserts],
AC_HELP_STRING([--disable-asserts], [Disable assertions [DANGEROUS]]),
[], [enable_asserts=yes])
AC_MSG_CHECKING([whether to disable assertions])
if test x"$enable_asserts" = x"no"; then
AC_MSG_RESULT([yes])
CPPFLAGS="$CPPFLAGS -DG_DISABLE_CHECKS -DG_DISABLE_ASSERT"
CPPFLAGS="$CPPFLAGS -DG_DISABLE_CAST_CHECKS"
else
AC_MSG_RESULT([no])
fi
dnl # --enable-final
AC_REQUIRE([AC_PROG_LD])
AC_ARG_ENABLE([final],
AC_HELP_STRING([--enable-final], [Build final version]),
[], [enable_final=yes])
AC_MSG_CHECKING([whether to build final version])
if test x"$enable_final" = x"yes"; then
AC_MSG_RESULT([yes])
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
else
AC_MSG_RESULT([no])
fi
])
|
