/usr/share/xfce4/dev-tools/m4macros/xdt-features.m4 is in xfce4-dev-tools 4.10.0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 | 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"
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
])
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