AC_INIT([iptables], [1.4.18])

# See libtool.info "Libtool's versioning system"
libxtables_vcurrent=10
libxtables_vage=0

AC_CONFIG_AUX_DIR([build-aux])
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_MACRO_DIR([m4])
AC_PROG_INSTALL
AM_INIT_AUTOMAKE([-Wall])
AC_PROG_CC
AM_PROG_CC_C_O
AC_DISABLE_STATIC
m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
AM_PROG_LIBTOOL

AC_ARG_WITH([kernel],
	AS_HELP_STRING([--with-kernel=PATH],
	[Path to kernel source/build directory]),
	[kbuilddir="$withval"; ksourcedir="$withval";])
AC_ARG_WITH([kbuild],
	AS_HELP_STRING([--with-kbuild=PATH],
	[Path to kernel build directory [[/lib/modules/CURRENT/build]]]),
	[kbuilddir="$withval"])
AC_ARG_WITH([ksource],
	AS_HELP_STRING([--with-ksource=PATH],
	[Path to kernel source directory [[/lib/modules/CURRENT/source]]]),
	[ksourcedir="$withval"])
AC_ARG_WITH([xtlibdir],
	AS_HELP_STRING([--with-xtlibdir=PATH],
	[Path where to install Xtables extensions [[LIBEXECDIR/xtables]]]),
	[xtlibdir="$withval"],
	[xtlibdir="${libdir}/xtables"])
AC_ARG_ENABLE([ipv4],
	AS_HELP_STRING([--disable-ipv4], [Do not build iptables]),
	[enable_ipv4="$enableval"], [enable_ipv4="yes"])
AC_ARG_ENABLE([ipv6],
	AS_HELP_STRING([--disable-ipv6], [Do not build ip6tables]),
	[enable_ipv6="$enableval"], [enable_ipv6="yes"])
AC_ARG_ENABLE([largefile],
	AS_HELP_STRING([--disable-largefile], [Do not build largefile support]),
	[enable_largefile="$enableval"],
	[enable_largefile="yes";
	largefile_cppflags='-D_LARGEFILE_SOURCE=1 -D_LARGE_FILES -D_FILE_OFFSET_BITS=64'])
AC_ARG_ENABLE([devel],
	AS_HELP_STRING([--enable-devel],
	[Install Xtables development headers]),
	[enable_devel="$enableval"], [enable_devel="yes"])
AC_ARG_ENABLE([libipq],
	AS_HELP_STRING([--enable-libipq], [Build and install libipq]))
AC_ARG_WITH([pkgconfigdir], AS_HELP_STRING([--with-pkgconfigdir=PATH],
	[Path to the pkgconfig directory [[LIBDIR/pkgconfig]]]),
	[pkgconfigdir="$withval"], [pkgconfigdir='${libdir}/pkgconfig'])

libiptc_LDFLAGS2="";
AX_CHECK_LINKER_FLAGS([-Wl,--no-as-needed],
	[libiptc_LDFLAGS2="-Wl,--no-as-needed"])
AC_SUBST([libiptc_LDFLAGS2])

AC_MSG_CHECKING([whether $LD knows -Wl,--no-undefined])
saved_LDFLAGS="$LDFLAGS";
LDFLAGS="-Wl,--no-undefined";
AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) {}])],
	[noundef_LDFLAGS="$LDFLAGS"; AC_MSG_RESULT([yes])],
	[AC_MSG_RESULT([no])]
)
LDFLAGS="$saved_LDFLAGS";

blacklist_modules="";

AC_CHECK_HEADERS([linux/dccp.h linux/ip_vs.h linux/magic.h linux/proc_fs.h])
if test "$ac_cv_header_linux_dccp_h" != "yes"; then
	blacklist_modules="$blacklist_modules dccp";
fi;
if test "$ac_cv_header_linux_ip_vs_h" != "yes"; then
	blacklist_modules="$blacklist_modules ipvs";
fi;

AC_SUBST([blacklist_modules])
AC_CHECK_SIZEOF([struct ip6_hdr], [], [#include <netinet/ip6.h>])

AM_CONDITIONAL([ENABLE_STATIC], [test "$enable_static" = "yes"])
AM_CONDITIONAL([ENABLE_SHARED], [test "$enable_shared" = "yes"])
AM_CONDITIONAL([ENABLE_IPV4], [test "$enable_ipv4" = "yes"])
AM_CONDITIONAL([ENABLE_IPV6], [test "$enable_ipv6" = "yes"])
AM_CONDITIONAL([ENABLE_LARGEFILE], [test "$enable_largefile" = "yes"])
AM_CONDITIONAL([ENABLE_DEVEL], [test "$enable_devel" = "yes"])
AM_CONDITIONAL([ENABLE_LIBIPQ], [test "$enable_libipq" = "yes"])

PKG_CHECK_MODULES([libnfnetlink], [libnfnetlink >= 1.0],
	[nfnetlink=1], [nfnetlink=0])
AM_CONDITIONAL([HAVE_LIBNFNETLINK], [test "$nfnetlink" = 1])

regular_CFLAGS="-Wall -Waggregate-return -Wmissing-declarations \
	-Wmissing-prototypes -Wredundant-decls -Wshadow -Wstrict-prototypes \
	-Winline -pipe";
regular_CPPFLAGS="${largefile_cppflags} -D_REENTRANT \
	-DXTABLES_LIBDIR=\\\"\${xtlibdir}\\\" -DXTABLES_INTERNAL";
kinclude_CPPFLAGS="";
if [[ -n "$kbuilddir" ]]; then
	kinclude_CPPFLAGS="$kinclude_CPPFLAGS -I$kbuilddir/include";
fi;
if [[ -n "$ksourcedir" ]]; then
	kinclude_CPPFLAGS="$kinclude_CPPFLAGS -I$ksourcedir/include";
fi;
pkgdatadir='${datadir}/xtables';

AC_SUBST([regular_CFLAGS])
AC_SUBST([regular_CPPFLAGS])
AC_SUBST([noundef_LDFLAGS])
AC_SUBST([kinclude_CPPFLAGS])
AC_SUBST([kbuilddir])
AC_SUBST([ksourcedir])
AC_SUBST([xtlibdir])
AC_SUBST([pkgconfigdir])
AC_SUBST([pkgdatadir])
AC_SUBST([libxtables_vcurrent])
AC_SUBST([libxtables_vage])
libxtables_vmajor=$(($libxtables_vcurrent - $libxtables_vage));
AC_SUBST([libxtables_vmajor])

AC_CONFIG_FILES([Makefile extensions/GNUmakefile include/Makefile
	iptables/Makefile iptables/xtables.pc
	libipq/Makefile libipq/libipq.pc
	libiptc/Makefile libiptc/libiptc.pc
	libiptc/libip4tc.pc libiptc/libip6tc.pc
	libxtables/Makefile utils/Makefile
	include/xtables-version.h include/iptables/internal.h])
AC_OUTPUT