+ACX_PTHREAD(,AC_MSG_ERROR([Missing POSIX Threads support]))
+
+#
+# Check for netlink.h
+#
+AC_CHECK_HEADER(linux/netlink.h,
+HAVE_NETLINK=yes
+AC_DEFINE([HAVE_NETLINK],[],[Support for Linux netlink])
+, [], [
+#include <sys/socket.h>
+#include <asm/types.h>
+])
+
+AM_CONDITIONAL(HAVE_NETLINK, [ test x"$HAVE_NETLINK" = xyes ])
+
+#
+# Check for net/route.h
+#
+AC_CHECK_HEADER(net/route.h,
+HAVE_PF_ROUTE=yes
+AC_DEFINE([HAVE_PF_ROUTE],[],[Support for PF_ROUTE])
+, [], [
+#include <sys/types.h>
+#include <sys/socket.h>
+])
+
+AM_CONDITIONAL(HAVE_PF_ROUTE, [ test x"$HAVE_PF_ROUTE" = xyes ])
+
+#
+# Check for struct ip_mreqn
+#
+AC_MSG_CHECKING(for struct ip_mreqn)
+AC_TRY_COMPILE([#include <netinet/in.h>], [
+ struct ip_mreqn mreq;
+ mreq.imr_address.s_addr = 0;
+], [
+ # Yes, we have it...
+ AC_MSG_RESULT(yes)
+ AC_DEFINE([HAVE_STRUCT_IP_MREQN],[],[Support for struct ip_mreqn])
+], [
+ # We'll just have to try and use struct ip_mreq
+ AC_MSG_RESULT(no)
+ AC_MSG_CHECKING(for struct ip_mreq)
+ AC_TRY_COMPILE([#include <netinet/in.h>], [
+ struct ip_mreq mreq;
+ mreq.imr_interface.s_addr = 0;
+ ], [
+ # Yes, we have it...
+ AC_MSG_RESULT(yes)
+ AC_DEFINE([HAVE_STRUCT_IP_MREQ],[],[Support for struct ip_mreq])
+ ], [
+ # No multicast support
+ AC_MSG_RESULT(no)
+ ])
+])
+
+#
+# Detecting the linux distribution for specific things like init scripts.
+#
+AC_ARG_WITH(distro, AS_HELP_STRING([--with-distro=DISTRO],[Specify the distribution to target: One of debian, gentoo, archlinux, fedora, mandriva, darwin, netbsd, freebsd, slackware or none]))
+if test "z$with_distro" = "z"; then
+ AC_CHECK_FILE(/etc/SuSE-release,with_distro="suse")
+ AC_CHECK_FILE(/etc/gentoo-release,with_distro="gentoo")
+ AC_CHECK_FILE(/etc/arch-release,with_distro="archlinux")
+ AC_CHECK_FILE(/etc/debian_version,with_distro="debian")
+ AC_CHECK_FILE(/etc/redhat-release,with_distro="fedora")
+ AC_CHECK_FILE(/etc/mandriva-release,with_distro="mandriva")
+ AC_CHECK_FILE(/etc/slackware-version,with_distro="slackware")
+ if test "z$with_distro" = "z"; then
+ with_distro=`uname -s`
+ fi
+fi
+with_distro=`echo ${with_distro} | tr '[[:upper:]]' '[[:lower:]]' `
+
+case $with_distro in
+ debian|gentoo|archlinux|suse|fedora|mandriva|darwin|freebsd|slackware|none)
+ ;;
+ netbsd)
+ AC_MSG_WARN([Your distribution (${with_distro}) is supported but no init script exist yet! (patches welcome)])
+ ;;
+ linux)
+ AC_MSG_ERROR([Linux distribution autodetection failed, you must specify the distribution to target using --with-distro=DISTRO, set DISTRO to none if your distribution is not supported.])
+ ;;
+ *)
+ AC_MSG_ERROR([Your distribution (${with_distro}) is not yet supported, init scripts and dbus configuration will not be installed! (patches welcome), you can specify --with-distro=none to skip this check])
+ ;;
+esac
+
+AM_CONDITIONAL(TARGET_SUSE, test x"$with_distro" = xsuse)
+AM_CONDITIONAL(TARGET_GENTOO, test x"$with_distro" = xgentoo)
+AM_CONDITIONAL(TARGET_DEBIAN, test x"$with_distro" = xdebian)
+AM_CONDITIONAL(TARGET_ARCHLINUX, test x"$with_distro" = xarchlinux)
+AM_CONDITIONAL(TARGET_FEDORA, test x"$with_distro" = xfedora)
+AM_CONDITIONAL(TARGET_MANDRIVA, test x"$with_distro" = xmandriva)
+AM_CONDITIONAL(TARGET_DARWIN, test x"$with_distro" = xdarwin)
+AM_CONDITIONAL(TARGET_NETBSD, test x"$with_distro" = xnetbsd)
+AM_CONDITIONAL(TARGET_FREEBSD, test x"$with_distro" = xfreebsd)
+AM_CONDITIONAL(TARGET_SLACKWARE, test x"$with_distro" = xslackware)
+
+test_gcc_flag() {
+ AC_LANG_CONFTEST([int main() {}])
+ $CC -c conftest.c $CFLAGS $@ > /dev/null 2> /dev/null
+ ret=$?
+ rm -f conftest.o
+ return $ret
+}
+
+# If using GCC specify some additional parameters
+if test "x$GCC" = "xyes" ; then
+
+ DESIRED_FLAGS="-Wall -W -Wextra -pedantic -pipe -Wformat -Wold-style-definition -Wdeclaration-after-statement -Wfloat-equal -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wredundant-decls -Wmissing-noreturn -Wshadow -Wendif-labels -Wpointer-arith -Wbad-function-cast -Wcast-qual -Wcast-align -Wwrite-strings -Winline"
+
+ if test "x$HAVE_NETLINK" = "xyes" ; then
+ # Test whether rtnetlink.h can be included when compiled with -std=c99
+ # some distributions (e.g. archlinux) have broken headers that dont
+ # define __u64 with -std=c99
+ AC_MSG_CHECKING([checking whether rtnetlink.h can be included with -std=c99])
+ OLDCFLAGS="$CFLAGS"
+ CFLAGS="-std=c99"
+ AC_TRY_COMPILE([#include <linux/rtnetlink.h>], [],
+ use_stdc99=yes, use_stdc99=no)
+
+ if test x"$use_stdc99" = xyes; then
+ DESIRED_FLAGS="-std=c99 $DESIRED_FLAGS"
+ AC_MSG_RESULT([yes])
+ else
+ AC_MSG_RESULT([no])
+ fi
+
+ CFLAGS="$OLDCFLAGS"
+ else
+ DESIRED_FLAGS="-std=c99 $DESIRED_FLAGS"
+ fi
+
+ for flag in $DESIRED_FLAGS ; do
+ AC_MSG_CHECKING([whether $CC accepts $flag])
+ if test_gcc_flag $flag ; then
+ CFLAGS="$CFLAGS $flag"
+ AC_MSG_RESULT([yes])
+ else
+ AC_MSG_RESULT([no])
+ fi
+ done
+fi
+