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configure.ac
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#
# Keepalived OpenSource project.
#
# Configuration template file for keepalived.
# autoconf will generate & check deps for proper compilation
#
# Copyright (C) 2001-2018 Alexandre Cassen, <acassen@linux-vs.org>
AC_DEFUN([add_to_var], [$1="$$1 $2"])
AC_DEFUN([add_to_var_ind], [eval $1=\"\$$1 $2\"]) dnl "
AC_DEFUN([add_to_var_ind_unique],
ADD_NEW=
[ eval var=\$$1
for item in $2; do
echo " $var " | $GREP -q " $item "
if test $? -ne 0; then
add_to_var([ADD_NEW], [$item])
fi
done
add_to_var_ind([$1], [$ADD_NEW])
])
AC_DEFUN([add_pkg_config],
[ if test -n "$2"; then
KA_PKG_PFX=$2
else
KA_PKG_PFX=KA
fi
add_to_var_ind_unique([${KA_PKG_PFX}_CPPFLAGS], [`$PKG_CONFIG --cflags-only-I $1`])
add_to_var_ind_unique([${KA_PKG_PFX}_CFLAGS], [`$PKG_CONFIG --cflags-only-other $1`])
if test .$3 = .remove-requires; then
REQUIRES=`$PKG_CONFIG --print-requires $1`
var=`$PKG_CONFIG --libs-only-l $1`
for r in $REQUIRES; do
REQ_LIBS=`$PKG_CONFIG --libs-only-l $r`
for l in $REQ_LIBS; do
var=`echo " $var " | sed -e "s: $l : :g"`
done
done
var=`echo $var | sed -e "s:^ *::" -e "s: *$::"`
eval ${KA_PKG_PFX}_LIBS="\"$var\""
var=`echo $var | sed -e "s/-l//g"`
eval ${KA_PKG_PFX}_LIB_NAMES="\"$var\""
else
add_to_var_ind_unique([${KA_PKG_PFX}_LIBS], [`$PKG_CONFIG --libs $1`])
fi
])
AC_DEFUN([add_pkg_config_without_libs],
[ if test -n "$2"; then
KA_PKG_PFX=$2
else
KA_PKG_PFX=KA
fi
add_to_var_ind_unique([${KA_PKG_PFX}_CPPFLAGS], [$($PKG_CONFIG --cflags-only-I $1)])
add_to_var_ind_unique([${KA_PKG_PFX}_CFLAGS], [$($PKG_CONFIG --cflags-only-other $1)])
])
AC_DEFUN([add_config_opt], [add_to_var([CONFIG_OPTIONS], [$1])])
AC_DEFUN([add_system_opt], [add_to_var([SYSTEM_OPTIONS], [$1])])
AC_DEFUN([get_lib_name],
[
if test $LDD = :; then
AC_MSG_ERROR([ldd is required for dynamic run-time linking support])
fi
SAV_LIBS="$LIBS"
LIBS=-l$1
AC_LINK_IFELSE([AC_LANG_SOURCE([[
extern void $2(void);
int main(void)
{
$2();
return 0;
}
]])], [
LIB_DETAILS=`$LDD ./conftest$EXEEXT | grep $1.so | sed -e "s/^[[ \t]]*//"`
LIB_NAME=`echo $LIB_DETAILS | sed -e "s/ .*//"`
],[
])
LIBS="$SAV_LIBS"
])
# AS_VAR_COPY was introduced in autoconf 2.63b.
# Remove the following definition once require autoconf >= 2.64.
m4_ifndef([AS_VAR_COPY],
[m4_define([AS_VAR_COPY],
[AS_LITERAL_IF([$1[]$2], [$1=$$2], [eval $1=\$$2])])])
dnl ----[ Process this file with autoconf to produce a configure script ]----
AC_PREREQ([2.63])
AC_INIT([Keepalived], [2.0.13], [keepalived-devel@lists.sourceforge.net], [], [http://www.keepalived.org/])
AM_INIT_AUTOMAKE([-Wall -Werror -Woverride foreign])
AC_CONFIG_SRCDIR([keepalived/core/main.c])
AC_CONFIG_HEADERS([lib/config.h])
AH_TOP(
[
#ifndef _CONFIG_H
#define _CONFIG_H
])
AH_BOTTOM(
[
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#endif])
AC_CONFIG_FILES([Makefile keepalived/Makefile lib/Makefile keepalived/core/Makefile keepalived.spec \
genhash/Makefile keepalived/check/Makefile keepalived/vrrp/Makefile \
keepalived/bfd/Makefile doc/Makefile bin_install/Makefile keepalived/dbus/Makefile \
keepalived/etc/Makefile keepalived/etc/init/Makefile keepalived/etc/init.d/Makefile \
doc/man/man8/Makefile])
MAINTAINERCLEANFILES="*~ *.orig *.rej core core.*"
AC_SUBST(MAINTAINERCLEANFILES)
CONFIG_OPTIONS=
SYSTEM_OPTIONS=
AM_SILENT_RULES([yes])
PKG_PROG_PKG_CONFIG
dnl ----[ Keepalived specific configure options ]----
AC_ARG_ENABLE(lvs-syncd,
[AS_HELP_STRING([--disable-lvs-syncd], [do not use LVS synchronization daemon])])
AC_ARG_ENABLE(lvs,
[AS_HELP_STRING([--disable-lvs], [do not use the LVS framework])])
AC_ARG_ENABLE(lvs-64bit-stats,
[AS_HELP_STRING([--disable-lvs-64bit-stats], [do not use the LVS 64-bit stats])])
AC_ARG_ENABLE(vrrp,
[AS_HELP_STRING([--disable-vrrp], [do not use the VRRP framework])])
AC_ARG_ENABLE(bfd,
[AS_HELP_STRING([--enable-bfd], [use the BFD framework])])
AC_ARG_WITH(kernel-dir,
[AS_HELP_STRING([--with-kernel-dir=DIR], [path to linux kernel source directory])],
[AS_HELP_STRING([kernel_src_path="$withval"],], [[kernel_src_path=""])])
AC_ARG_ENABLE(fwmark,
[AS_HELP_STRING([--disable-fwmark], [compile without SO_MARK support])])
AC_ARG_ENABLE(snmp,
[AS_HELP_STRING([--enable-snmp], [compile with SNMP support])])
AC_ARG_ENABLE(snmp-vrrp,
[AS_HELP_STRING([--enable-snmp-vrrp], [compile with SNMP vrrp support])])
AC_ARG_ENABLE(snmp-keepalived,
[AS_HELP_STRING([--enable-snmp-keepalived], [obsolete - use --enable-snmp-vrrp])])
AC_ARG_ENABLE(snmp-checker,
[AS_HELP_STRING([--enable-snmp-checker], [compile with SNMP checker support])])
AC_ARG_ENABLE(snmp-rfc,
[AS_HELP_STRING([--enable-snmp-rfc], [compile with SNMP RFC2787 (VRRPv2) and SNMP RFC6527 (VRRPv3) support])])
AC_ARG_ENABLE(snmp-rfcv2,
[AS_HELP_STRING([--enable-snmp-rfcv2], [compile with SNMP RFC2787 (VRRPv2) support])])
AC_ARG_ENABLE(snmp-rfcv3,
[AS_HELP_STRING([--enable-snmp-rfcv3], [compile with SNMP RFC6257 (VRRPv3) support])])
AC_ARG_ENABLE(snmp-reply-v3-for-v2,
[AS_HELP_STRING([--disable-snmp-reply-v3-for-v2], [disable RFC6257 responses for VRRPv2 instances])])
AC_ARG_ENABLE(dbus,
[AS_HELP_STRING([--enable-dbus], [compile with dbus support])])
AC_ARG_ENABLE(dbus-create-instance,
[AS_HELP_STRING([--enable-dbus-create-instance], [compile with dbus support for creating instances])])
AC_ARG_ENABLE(sha1,
[AS_HELP_STRING([--enable-sha1], [compile with SHA1 support])])
AC_ARG_ENABLE(regex,
[AS_HELP_STRING([--enable-regex], [build with HTTP_GET regex checking])])
AC_ARG_ENABLE(regex-timers,
[AS_HELP_STRING([--enable-regex-timers], [build with HTTP_GET regex timers])])
AC_ARG_ENABLE(json,
[AS_HELP_STRING([--enable-json], [compile with signal to dump configuration and stats as json])])
AC_ARG_WITH(init,
[AS_HELP_STRING([--with-init=(upstart|systemd|SYSV|SUSE|openrc)], [specify init type])],
[init_type="$withval"], [init_type=""])
AC_ARG_ENABLE(vrrp-auth,
[AS_HELP_STRING([--disable-vrrp-auth], [compile without VRRP authentication])])
AC_ARG_ENABLE(checksum_compat,
[AS_HELP_STRING([--disable-checksum-compat], [compile without v1.3.6 and earlier VRRPv3 unicast checksum compatibility])])
AC_ARG_ENABLE(routes,
[AS_HELP_STRING([--disable-routes], [compile without ip rules/routes])])
AC_ARG_ENABLE(linkbeat,
[AS_HELP_STRING([--disable-linkbeat], [build without linkbeat support])])
AC_ARG_ENABLE(gnu-std-paths,
[AS_HELP_STRING([--enable-gnu-std-paths], [use GNU standard paths for pid files etc])])
AC_ARG_ENABLE(dynamic-linking,
[AS_HELP_STRING([--enable-dynamic-linking], [compile with/without dynamically linked libiptc/libipset])])
AC_ARG_ENABLE(iptables,
[AS_HELP_STRING([--disable-iptables], [compile without iptables support])],
[], [IPTABLES_SILENT=Yes])
AC_ARG_ENABLE(libiptc-dynamic,
[AS_HELP_STRING([--enable-libiptc-dynamic], [compile with libiptc dynamically linked])])
AC_ARG_ENABLE(libipset-dynamic,
[AS_HELP_STRING([--disable-libipset-dynamic], [compile with libipset statically linked])])
AC_ARG_ENABLE(libxtables-dynamic,
[AS_HELP_STRING([--enable-libxtables-dynamic], [compile with libxtables dynamically linked])])
AC_ARG_ENABLE(libnl-dynamic,
[AS_HELP_STRING([--enable-libnl-dynamic], [compile with libnl dynamically linked])])
AC_ARG_ENABLE(libiptc,
[AS_HELP_STRING([--disable-libiptc], [compile without libiptc])])
AC_ARG_ENABLE(libipset,
[AS_HELP_STRING([--disable-libipset], [compile without libipset])])
AC_ARG_ENABLE(nftables,
[AS_HELP_STRING([--disable-nftables], [build without nftables support])],
[], [NFTABLES_SILENT=Yes])
AC_ARG_ENABLE(libnl,
[AS_HELP_STRING([--disable-libnl], [compile without libnl])])
AC_ARG_ENABLE(track-process,
[AS_HELP_STRING([--disable-track-process], [build without track-process functionality])])
AC_ARG_ENABLE(strict-config-checks,
[AS_HELP_STRING([--enable-strict-config-checks], [build with strict configuration checking])])
AC_ARG_ENABLE(hardening,
[AS_HELP_STRING([--disable-hardening], [do not build with security hardening])])
AC_ARG_ENABLE(optimise,
[AS_HELP_STRING([--optimise], [compiler optimisation level])], [], [enable_optimise=not-specified])
AC_ARG_ENABLE(mem-check,
[AS_HELP_STRING([--enable-mem-check], [compile with memory alloc checking])])
AC_ARG_ENABLE(mem-check-log,
[AS_HELP_STRING([--enable-mem-check-log], [compile with memory alloc checking writing to syslog])])
AC_ARG_ENABLE(timer-check,
[AS_HELP_STRING([--enable-timer-check], [compile with set time logging])])
AC_ARG_ENABLE(debug,
[AS_HELP_STRING([--enable-debug], [compile with debugging flags])])
AC_ARG_ENABLE(netlink-timers,
[AS_HELP_STRING([--enable-netlink-timers], [compile with netlink command timers])])
AC_ARG_ENABLE(smtp-alert-debug,
[AS_HELP_STRING([--enable-smtp-alert-debug], [compile with smtp-alert debugging])])
AC_ARG_ENABLE(stacktrace,
[AS_HELP_STRING([--enable-stacktrace], [compile with stacktrace support])])
AC_ARG_ENABLE(perf,
[AS_HELP_STRING([--enable-perf], [compile with perf performance data recording support for vrrp process])])
AC_ARG_ENABLE(log-file,
[AS_HELP_STRING([--enable-log-file], [enable logging to file (-g)])])
AC_ARG_ENABLE(dump-threads,
[ --enable-dump-threads compile with thread dumping support])
AC_ARG_ENABLE(epoll-debug,
[ --enable-epoll-debug compile with epoll_wait() debugging support])
AC_ARG_ENABLE(epoll-thread-dump,
[ --enable-epoll-thread-dump compile with epoll thread dumping support])
AC_ARG_ENABLE(regex-debug,
[ --enable-regex-debug compile with regex debugging support])
AC_ARG_ENABLE(tsm-debug,
[ --enable-tsm-debug compile with TSM debugging support])
AC_ARG_ENABLE(vrrp-fd-debug,
[ --enable-vrrp-fd-debug compile with vrrp fd debugging support])
AC_ARG_ENABLE(eintr-debug,
[AS_HELP_STRING([--enable-eintr-debug],[compile with EINTR debugging support, set to check/nocheck to check/not check for EINTR])])
AC_ARG_ENABLE(asserts,
[AS_HELP_STRING([--enable-asserts], [compile with assert() enabled])])
AC_ARG_WITH(fixed-if-type,
[ --with-fixed-if-type=TYPE treat interface type TYPE as unchangeable])
AC_ARG_WITH(default-config-file,
AS_HELP_STRING([--with-default-config-file=FILE], [Default configuration file]),
[default_config_file="$withval"], [default_config_file=""])
AC_ARG_ENABLE(profile,
[AS_HELP_STRING([--enable-profile], [compile with profiling flags])])
AC_ARG_ENABLE(conversion-checks,
[AS_HELP_STRING([--enable-conversion-checks], [compile with conversion warnings if sensible])])
AC_ARG_ENABLE(force-conversion-checks,
[AS_HELP_STRING([--enable-force-conversion-checks], [compile with conversion warnings])])
AC_ARG_ENABLE(Werror,
[AS_HELP_STRING([--enable-Werror], [compile with warnings being errors])])
AC_ARG_WITH([systemdsystemunitdir],
AS_HELP_STRING([--with-systemdsystemunitdir=DIR], [Directory for systemd service files]),
[], [with_systemdsystemunitdir=$($PKG_CONFIG --variable=systemdsystemunitdir systemd)])
# Set the kernel headers path
if test -n "$kernel_src_path"; then
if test ! -d $kernel_src_path/include; then
AC_MSG_ERROR([kernel source path $kernel_src_path/include does not exist])
fi
if test ! -d $kernel_src_path/include/linux; then
AC_MSG_ERROR([kernel source path $kernel_src_path/include does not appear to include linux header files])
fi
if test -d $kernel_src_path/include/uapi/linux; then
AC_MSG_ERROR([kernel source path $kernel_src_path appears to be an unprocessed kernel source tree])
fi
kernelinc="-I$kernel_src_path/include"
elif test ! -d /usr/include/linux -a \
-d /usr/src/linux/include; then
kernelinc="-I/usr/src/linux/include"
else
kernelinc=
fi
CPPFLAGS="$kernelinc $CPPFLAGS"
# Checks for programs.
AC_PROG_CC
AC_PROG_MAKE_SET
AC_PROG_INSTALL
AC_PROG_RANLIB
AC_PROG_GREP
AC_PROG_LN_S
AC_PROG_SED
AC_CHECK_TOOL(STRIP,strip)
AC_CHECK_TOOL(LDD,ldd)
m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
ARFLAGS=cr
AC_SUBST(ARFLAGS)
# Default settings
ENABLE_LOG_FILE_APPEND=No
# AC_PROG_LIBTOOL
#
# save the configure arguments
#
args=`echo $ac_configure_args | $SED -e "s/'//g"`
AC_DEFINE_UNQUOTED(KEEPALIVED_CONFIGURE_OPTIONS,"$args", [configure options specified])
KA_CPPFLAGS="$kernelinc"
KA_CFLAGS="-Wall -Wunused -Wstrict-prototypes -Wextra -Wfloat-conversion -Winit-self -g -D_GNU_SOURCE"
KA_LDFLAGS=
KA_LIBS=
NEED_LIBDL=No
#KA_LIBTOOLFLAGS =
# We want _GNU_SOURCE defined always
add_to_var([CFLAGS], [-D_GNU_SOURCE])
# Some sanity checks on configure options
AS_IF([test .$enable_vrrp = .no],
[
AS_IF([test .$IPTABLES_SILENT == .Yes], [enable_iptables=no])
AS_IF([test .$NFTABLES_SILENT == .Yes], [enable_nftables=no])
AS_IF([test .$enable_perf = .yes], [AC_MSG_ERROR([enable-perf requires vrrp])])
AS_IF([test .$enable_libiptc_dynamic = .yes], [AC_MSG_ERROR([enable-libiptc-dynamic requires vrrp])])
AS_IF([test .$enable_libxtables_dynamic = .yes], [AC_MSG_ERROR([enable-libxtables-dynamic requires vrrp])])
AS_IF([test .$enable_libiptc = .no], [AC_MSG_ERROR([disable-libiptc requires vrrp])])
AS_IF([test .$enable_libipset = .no], [AC_MSG_ERROR([disable-libipset requires vrrp])])
AS_IF([test $with_fixed_if_type], [AC_MSG_ERROR([with-fixed-if-type requires vrrp])])
AS_IF([test .$enable_vrrp_fd_debug = .yes], [AC_MSG_ERROR([enable-vrrp-fd-debug requires vrrp])])
AS_IF([test .$enable_tsm_debug = .yes], [AC_MSG_ERROR([enable-tsm-debug requires vrrp])])
AS_IF([test .$enable_json = .yes], [AC_MSG_ERROR([enable-json requires vrrp])])
AS_IF([test .$enable_snmp_vrrp = .yes], [AC_MSG_ERROR([enable-snmp-vrrp requires vrrp])])
AS_IF([test .$enable_snmp_keepalived = .yes], [AC_MSG_ERROR([enable-snmp-keepalived requires vrrp])])
AS_IF([test .$enable_snmp_rfc = .yes], [AC_MSG_ERROR([enable-snmp-rfc requires vrrp])])
AS_IF([test .$enable_snmp_rfcv2 = .yes], [AC_MSG_ERROR([enable-snmp-rfcv2 requires vrrp])])
AS_IF([test .$enable_snmp_rfcv3 = .yes], [AC_MSG_ERROR([enable-snmp-rfcv3 requires vrrp])])
AS_IF([test .$enable_dbus = .yes], [AC_MSG_ERROR([enable-dbus requires vrrp])])
AS_IF([test .$enable_vrrp_auth = .no], [AC_MSG_ERROR([disable-vrrp-auth requires vrrp])])
AS_IF([test .$enable_checksum_compat = .no], [AC_MSG_ERROR([disable-checksum-compat requires vrrp])])
AS_IF([test .$enable_routes = .no], [AC_MSG_ERROR([disable-routes requires vrrp])])
AS_IF([test .$enable_linkbeat = .no], [AC_MSG_ERROR([disable-linkbeat requires vrrp])])
AS_IF([test .$enable_bfd = .yes], [AC_MSG_ERROR([enable-bfd requires vrrp])])
AS_IF([test .$enable_iptables != .no], [AC_MSG_ERROR([enable-iptables requires vrrp])])
AS_IF([test .$enable_nftables != .no], [AC_MSG_ERROR([enable-nftables requires vrrp])])
AS_IF([test .$enable_track_process = .yes], [AC_MSG_ERROR([enable-track-process requires vrrp])])
])
AS_IF([test .$enable_iptables = .no],
[
AS_IF([test .$enable_libiptc_dynamic = .yes], [AC_MSG_ERROR([enable-libiptc-dynamic requires vrrp and iptables])])
AS_IF([test .$enable_libipset_dynamic = .yes], [AC_MSG_ERROR([enable-libipset-dynamic requires vrrp and iptables])])
AS_IF([test .$enable_libxtables-dynamic = .yes], [AC_MSG_ERROR([enable-libxtables-dynamic requires vrrp and iptables])])
AS_IF([test .$enable_libipset = .yes], [AC_MSG_ERROR([enable-libipset requires vrrp and iptables])])
])
AS_IF([test .$enable_libipset = .no],
[
AS_IF([test .$enable_libipset_dynamic = .yes], [AC_MSG_ERROR([enable-libipset-dynamic requires ipsets])])
])
AS_IF([test .$enable_snmp_rfc != .yes -a .$enable_snmp_rfcv3 != yes],
[
AS_IF([test .$enable_snmp_reply_v3_for_v2 = .yes], [AC_MSG_ERROR([enable-snmp-reply-v3-for-v2 requires enable-snmp-rfcv3 or enable-snmp-rfc])])
])
AS_IF([test .$enable_dbus != .yes],
[
AS_IF([test .$enable_dbus_create_instance = .yes], [AC_MSG_ERROR([enable-dbus-create-instance requires enable-dbus])])
])
AS_IF([test .$enable_lvs = .no],
AS_IF([test .$enable_regex = .yes], [AC_MSG_ERROR([enable-regex requires lvs])])
AS_IF([test .$enable_libnl_dynamic = .yes], [AC_MSG_ERROR([enable-libnl-dynamic requires lvs])])
AS_IF([test .$enable_libnl = .no], [AC_MSG_ERROR([disable-libnl requires lvs])])
AS_IF([test .$enable_lvs_syncd = .no], [AC_MSG_ERROR([disable-lvs-syncd requires lvs])])
AS_IF([test .$enable_lvs_64bit_stats = .no], [AC_MSG_ERROR([disable-lvs-64bit-stats requires lvs])])
AS_IF([test .$enable_fwmark = .yes], [AC_MSG_ERROR([enable-fwmark requires lvs])])
)
AS_IF([test .$enable_regex != .yes],
AS_IF([test .$enable_regex_timers = .yes], [AC_MSG_ERROR([enable-regex-timers requires enable-regex])])
AS_IF([test .$enable_regex_debug = .yes], [AC_MSG_ERROR([enable-regex-debug requires enable-regex])])
)
if test "$enable_conversion_checks" = yes; then
# Check if we can sensibly enable -Wconversion
AC_MSG_CHECKING([for usable -Wconversion])
SAV_CFLAGS="$CFLAGS"
CFLAGS="-Wconversion -O2 -Wp,-D_FORTIFY_SOURCE=2 -Werror"
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
#include <sys/types.h>
#include <sys/select.h>
#include <stdint.h>
#include <stdbool.h>
#include <sys/socket.h>
#include <linux/rtnetlink.h>
#define VAL 255
static void
fun(uint8_t val)
{
}
int main(int argc, char**argv)
{
fd_set set;
uint8_t val = 42;
unsigned u;
bool b;
size_t size = 17;
char c[2];
char *c_ptr = c;
struct rtattr rta;
struct rtattr *rta_p = &rta;
FD_SET(argc+1, &set);
fun(argc == VAL ? VAL : val);
// vrrp->lower_prio_no_advert = vrrp->strict_mode ? true : global_data->vrrp_lower_prio_no_advert;
u = u ? true : b;
size = RTA_LENGTH(size);
c_ptr = RTA_DATA(c_ptr);
rta_p = RTA_NEXT(rta_p, size);
val = (u < 256 ) ? u & 0xff : 0;
}
]])],
[
AC_MSG_RESULT([yes])
add_to_var([KA_CFLAGS], [-Wconversion])
],
[
AC_MSG_RESULT([no])
AC_MSG_WARN([-Wconversion is not sensible with this compiler. Use --enable-force-conversion-checks to override.])
])
CFLAGS="$SAV_CFLAGS"
elif test "$enable_force_conversion_checks" = yes; then
add_to_var([KA_CFLAGS], [-Wconversion])
fi
if test "$enable_Werror" = yes; then
add_to_var([KA_CFLAGS], [-Werror])
fi
AC_MSG_CHECKING([for -Wimplicit-fallthrough])
SAV_CFLAGS="$CFLAGS"
CFLAGS="-Wimplicit-fallthrough=3"
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
int main(int argc, char**argv)
{
}
]])],
[
AC_MSG_RESULT([yes])
add_to_var([KA_CFLAGS], [-Wimplicit-fallthrough=3])
],
[
AC_MSG_RESULT([no])
])
CFLAGS="$SAV_CFLAGS"
dnl ---- [ Do we want stricter configuration checking? ] ----
STRICT_CONFIG=No
if test "$enable_strict_config_checks" = yes; then
AC_DEFINE([_STRICT_CONFIG_], [ 1 ], [Define to 1 if want stricter configuration checking])
STRICT_CONFIG=Yes
add_config_opt([STRICT_CONFIG])
fi
if test "$enable_hardening" != no; then
AC_MSG_CHECKING([for PIE support])
SAV_CFLAGS="$CFLAGS"
SAV_LDFLAGS="$LDFLAGS"
CFLAGS="$CFLAGS -fPIE"
LDFLAGS="$LDFLAGS -pie"
AC_LINK_IFELSE([AC_LANG_SOURCE([[
int main(int argc, char **argv)
{
int i = 0;
}
]])],
AC_MSG_RESULT([yes])
add_to_var([KA_CFLAGS], [-fPIE])
add_to_var([KA_LDFLAGS], [-pie]),
AC_MSG_RESULT([no]))
CFLAGS=$SAV_CFLAGS
LDFLAGS=$SAV_LDFLAGS
for FLAG in \
"-Wformat -Werror=format-security" \
"-Wp,-D_FORTIFY_SOURCE=2" \
"-fexceptions" \
"-fstack-protector-strong" \
"--param=ssp-buffer-size=4" \
"-grecord-gcc-switches"
do
AC_MSG_CHECKING([for $FLAG support])
CFLAGS="$CFLAGS $FLAG"
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE([[ ]])],
[AC_MSG_RESULT([yes])]
add_to_var([KA_CFLAGS], [$FLAG]),
[AC_MSG_RESULT([no])])
CFLAGS=$SAV_CFLAGS
done
WL_FLAGS=
for FLAG in \
"-z,relro" \
"-z,now"
do
AC_MSG_CHECKING([for -Wl,$FLAG support])
LDFLAGS="$LDFLAGS -Wl,$FLAG"
AC_LINK_IFELSE(
[AC_LANG_SOURCE([[
int main(int argc, char **argv)
{
int i = 0;
}
]])],
(
AC_MSG_RESULT([yes])
[WL_FLAGS="$WL_FLAGS,$FLAG"]
),
(
[AC_MSG_RESULT([no])]
)
)
CFLAGS=$SAV_CFLAGS
done
if test -n "$WL_FLAGS"; then
add_to_var([KA_LDFLAGS], [-Wl$WL_FLAGS])
fi
fi
# enable-optimise
AS_IF([test "$enable_optimise" = yes -o "$enable_optimise" = not-specified], [optimise_level=2], [optimise_level=$enable_optimise])
AS_IF([test "$enable_optimise" = no], [optimise_level=0])
AS_IF([test "$optimise_level" -eq 0],
[
echo $KA_CFLAGS | $GREP -q -- "-D_FORTIFY_SOURCE=[[^0]]"
AS_IF([test $ret -eq 0], [AC_MSG_WARN([--disable-optimise requires --disable-hardening])])
])
FLAG="-O$optimise_level"
AC_MSG_CHECKING([for $FLAG support])
SAV_CFLAGS=$CFLAGS
CFLAGS="$CFLAGS $FLAG"
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE([[ ]])],
[AC_MSG_RESULT([yes])]
add_to_var([KA_CFLAGS], [$FLAG]),
[
AC_MSG_RESULT([no])
AS_IF([test "$enable_optimise" != not-specified], [AC_MSG_ERROR([Invalid optimisation level specified])])
])
CFLAGS=$SAV_CFLAGS
AC_SUBST(KA_CPPFLAGS)
AC_SUBST(KA_CFLAGS)
AC_SUBST(KA_LDFLAGS)
AC_SUBST(KA_LIBS)
# AC_SUBST(KA_LIBTOOLFLAGS)
# Check if unaligned memory access is supported (for ARM not supported prior to ARMv6 processors)
AC_MSG_CHECKING([for unaligned memory access])
AC_RUN_IFELSE(
[
AC_LANG_PROGRAM(
[[
#include <limits.h>
#include <endian.h>
#if __BYTE_ORDER == __BIG_ENDIAN
#if ULONG_MAX == 0xffffffffffffffffUL
#define CHK_VAL 0x1234567890abcdefUL
#elif ULONG_MAX == 0xffffffffUL
#define CHK_VAL 0x12345678UL
#else
#define CHK_VAL 0x1234UL
#endif
#elif __BYTE_ORDER == __LITTLE_ENDIAN
#if ULONG_MAX == 0xffffffffffffffffUL
#define CHK_VAL 0xefcdab9078563412UL
#elif ULONG_MAX == 0xffffffffUL
#define CHK_VAL 0x78563412UL
#else
#define CHK_VAL 0x3412UL
#endif
#else
#error Neither big nor little endian - unsupported
#endif
]],
[[
unsigned long arr[2] = { 0, 0 };
unsigned char *p = (unsigned char *)arr + 1;
unsigned i;
*(unsigned long *)p = CHK_VAL;
return !!(arr[0] == CHK_VAL || p[0] != 0x12 || p[1] != 0x34 || p[2] != 0x56);
]]
)
],
[AC_MSG_RESULT([yes])],
[
AC_MSG_RESULT([no])
AC_DEFINE([_NO_UNALIGNED_ACCESS_], [ 1 ], [Define to 1 if unaligned memory access not supported])
],
[
AC_MSG_RESULT([unknown])
AC_MSG_WARN([Cannot determine if unaligned access supported. Assuming yes.])
]
)
# Checks for libraries.
dnl clock_gettime() required -lt before glibc 2.17
AC_MSG_CHECKING([for clock_gettime() requires -lrt])
AC_LINK_IFELSE([AC_LANG_SOURCE([[
#include <time.h>
int main(int argc, char **argv)
{
int i;
struct timespec ts;
i = clock_gettime(CLOCK_MONOTONIC, &ts);
}
]])],
[AC_MSG_RESULT([no])],
[
SAV_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS -lrt"
AC_LINK_IFELSE([AC_LANG_SOURCE([[
#include <time.h>
int main(int argc, char **argv)
{
int i;
struct timespec ts;
i = clock_gettime(CLOCK_MONOTONIC, &ts);
}
]])],
[AC_MSG_RESULT([yes])]
add_to_var([KA_LIBS], [-lrt]),
[AC_MSG_ERROR([clock_gettime() not supported])])
LDFLAGS=$SAV_LDFLAGS
])
# Checks for header files.
AC_CHECK_HEADERS([arpa/inet.h fcntl.h limits.h netdb.h netinet/in.h stdint.h stdlib.h string.h sys/ioctl.h sys/param.h sys/prctl.h sys/socket.h sys/time.h syslog.h unistd.h],
[], [AC_MSG_ERROR([Missing/unusable system header file <$ac_header>])])
# check for kernel headers
SAV_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $kernelinc"
dnl -- <linux/netlink.h> needed <sys/socket.h> until Linux 3.1
dnl -- using AC_CHECK_HEADER causes a horrible error message for the user
NETLINK_EXTRA_INCLUDE=
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
#include <linux/netlink.h>
]])], [],
[AC_CHECK_HEADER([linux/netlink.h],
[
AC_DEFINE([NETLINK_H_NEEDS_SYS_SOCKET_H], [ 1 ], [Define to 1 if <linux/netlink.h> needs <sys/socket.h>])
NETLINK_EXTRA_INCLUDE="#include <sys/socket.h>"
], [AC_MSG_ERROR([Missing/unusable kernel header file <linux/netlink.h>])],
[[#include <sys/socket.h>]])])
dnl -- <linux/rtnetlink.h> needed <sys/socket.h> until ? Linux 3.1
dnl -- using AC_CHECK_HEADER causes a horrible error message for the user
RTNETLINK_EXTRA_INCLUDE=
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
#include <linux/rtnetlink.h>
]])], [],
[AC_CHECK_HEADER([linux/rtnetlink.h],
[
AC_DEFINE([RTNETLINK_H_NEEDS_SYS_SOCKET_H], [ 1 ], [Define to 1 if <linux/rtnetlink.h> needs <sys/socket.h>])
RTNETLINK_EXTRA_INCLUDE="#include <sys/socket.h>"
], [AC_MSG_ERROR([Missing/unusable kernel header file <linux/rtnetlink.h>])],
[[#include <sys/socket.h>]])])
AC_CHECK_HEADERS([asm/types.h linux/ethtool.h linux/icmpv6.h linux/if_ether.h linux/if_packet.h linux/ip.h linux/sockios.h linux/types.h],
[], [AC_MSG_ERROR([Missing/unusable kernel header file <$ac_header>])])
AC_CHECK_HEADERS([linux/fib_rules.h linux/if_addr.h linux/if_link.h],
[], [AC_MSG_ERROR([Missing/unusable kernel header file <$ac_header>])],
[[$NETLINK_EXTRA_INCLUDE]])
AC_CHECK_HEADERS([linux/if_arp.h],
[], [AC_MSG_ERROR([Missing/unusable <$ac_header>])],
[[#include <sys/socket.h>]])
CPPFLAGS="$SAV_CPPFLAGS"
# Checks for typedefs, structures, and compiler characteristics.
AC_HEADER_STDBOOL
AC_C_INLINE
AC_TYPE_INT64_T
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_TYPE_UINT16_T
AC_TYPE_UINT32_T
AC_TYPE_UINT64_T
AC_TYPE_UINT8_T
AC_C_CONST
# Checks for library functions.
AC_FUNC_FORK
AC_FUNC_MALLOC
AC_FUNC_REALLOC
AC_CHECK_FUNCS([dup2 getcwd gettimeofday memmove memset select setenv socket strcasecmp strchr strdup strerror strpbrk strstr strtol strtoul uname])
dnl - pipe2() since Linux 2.6.27 and glibc 2.9.
AC_CHECK_FUNCS([pipe2], [add_system_opt([PIPE2])])
dnl - signalfd() since Linux 2.6.22 and glibc 2.8
AC_CHECK_FUNCS([signalfd], [add_system_opt([SIGNALFD])])
dnl - inotify_init1() since Linux 2.6.27
AC_CHECK_FUNCS([inotify_init1], [add_system_opt([INOTIFY_INIT1])])
dnl - vsyslog() Not defined by Posix, but available in glibc and musl
AC_CHECK_FUNCS([vsyslog], [add_system_opt([VSYSLOG])])
dnl - epoll_create1() since Linux 2.6.27 and glibc 2.9
AC_CHECK_FUNCS([epoll_create1], [add_system_opt([EPOLL_CREATE1])])
# glibc uses unsigned int as 3rd parameter to __assert_fail(), musl uses int.
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
#include <assert.h>
#include <stdlib.h>
void __assert_fail(const char * a, const char *b, unsigned int l, const char *c)
{
exit(a[0] + b[0] + c[0] + l == 0);
}
]])],
[LINE_type="unsigned int"], [LINE_type="int"])
AC_DEFINE_UNQUOTED([LINE_type], [ $LINE_type ], [The type of parameter __line passed to __assert_fail()])
dnl Check if libc supports __always_inline
dnl See glibc sys/cdefs.h definition of __always_inline and comment
SAV_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Wattributes -Werror"
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
#include <stdlib.h>
static __always_inline int
test_func(int val)
{
return val;
}
int
main(int argc, char **argv)
{
int val = test_func(3);
return val;
}
]])],
[],
[AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
static __inline __attribute__ ((__always_inline__)) int
test_func(int val)
{
return val;
}
int
main(int argc, char **argv)
{
int val = test_func(3);
return val;
}
]])],
[AC_DEFINE([__always_inline], [__inline __attribute__ ((__always_inline__))], [Define __always_inline if libc does not define it])],
[AC_DEFINE([__always_inline], [inline], [Define __always_inline if libc does not define it])]
)])
CFLAGS="$SAV_CFLAGS"
dnl - Do we want to override dynamic/static linking?
AS_IF([test "$enable_dynamic_linking"],
[
AS_IF([test .$enable_vrrp != .no],
[
enable_libiptc_dynamic=$enable_dynamic_linking
enable_libipset_dynamic=$enable_dynamic_linking
enable_libxtables_dynamic=$enable_dynamic_linking
])
AS_IF([test .$enable_vrrp != .no],
[
enable_libnl_dynamic=$enable_dynamic_linking
])
])
# check for missing definition - added in glibc 2.8
AC_CHECK_DECLS([ETHERTYPE_IPV6], [],
[
AC_DEFINE([ETHERTYPE_IPV6], [0x86dd], [Defined here if not found in <net/ethernet.h>.])
],
[[#include <net/ethernet.h>]])
BUILD_GENHASH=Yes
dnl ----[ Checks for openssl ]----
# check for openssl headers
NEED_MD5=no
NEED_SSL=no
if test "$enable_vrrp" != no -a \
"$enable_vrrp_auth" != no; then
NEED_MD5=yes
fi
if test "$enable_lvs" != no; then
NEED_MD5=yes
NEED_SSL=yes
fi
AC_CHECK_HEADERS([openssl/ssl.h openssl/err.h], [],
[
if test $NEED_SSL = yes; then
AC_MSG_ERROR([
!!! OpenSSL is not properly installed on your system. !!!
!!! Can not include OpenSSL headers files. !!!])
fi
BUILD_GENHASH=No
NEED_SSL=no
break
])
AC_CHECK_HEADERS([openssl/md5.h], [],
[
if test $NEED_MD5 = yes; then
AC_MSG_ERROR([
!!! OpenSSL is not properly installed on your system. !!!
!!! Can not include OpenSSL MD5 headers files. !!!])
fi
BUILD_GENHASH=No
NEED_MD5=no
break
])
unset LIBS
$PKG_CONFIG --exists openssl
if test $? -eq 0; then
add_pkg_config([openssl], [OPENSSL])
else
OPENSSL_LIBS="-lssl -lcrypto"
fi
EXTRA_LIBS=`echo $OPENSSL_LIBS | sed -e "s/-lcrypto//"`
AC_CHECK_LIB(crypto, MD5_Init, [],
[
if test $NEED_MD5 = yes; then
AC_MSG_ERROR([OpenSSL MD5 libraries are required])
fi
BUILD_GENHASH=No
], [$EXTRA_LIBS])
if test $NEED_MD5 = yes; then
add_to_var([KA_LIBS], [$LIBS])
fi
add_to_var([GENHASH_LIBS], [$LIBS])
unset LIBS
EXTRA_LIBS=`echo $OPENSSL_LIBS | sed -e "s/-lssl//"`
AC_CHECK_LIB(ssl, SSL_CTX_new, [],
[
if test $NEED_SSL = yes; then
AC_MSG_ERROR([OpenSSL libraries are required])
fi
BUILD_GENHASH=No
], [$EXTRA_LIBS])
if test $NEED_SSL = yes; then
add_to_var([KA_LIBS], [$LIBS])
fi
add_to_var([GENHASH_LIBS], [$LIBS])
# Introduced in OpenSSL ver 0.9.9
LIBS=$OPENSSL_LIBS
AC_MSG_CHECKING([SSL_set_tlsext_host_name() - may be a definition])
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
#include <openssl/ssl.h>
int main(void)
{
request_t req;
SSL_set_tlsext_host_name(req.ssl, "SSL");
}
]])], [
AC_MSG_RESULT([no])
], [
AC_MSG_RESULT([yes])
AC_DEFINE([_HAVE_SSL_SET_TLSEXT_HOST_NAME_], [ 1 ], [Define to 1 if have SSL_set_tlsext_host_name()])
])
# SSL_CTX_set_verify_depth() introduced OpenSSL v0.9.5a
AC_CHECK_FUNCS([SSL_CTX_set_verify_depth])
# SSL_set0_rbio(), SSL_set0_wbio() and OPENSSL_init_crypto() introduced OpenSSL v1.1.0
AC_CHECK_FUNCS([SSL_set0_rbio OPENSSL_init_crypto])
# TLS_method() introduced OpenSSL v1.1.0
AC_CHECK_FUNCS([TLS_method])
unset LIBS
if test $BUILD_GENHASH = No; then
AC_MSG_NOTICE([Unable to build genhash due to missing openssl headers/libraries])
GENHASH_LIBS=
fi
AC_SUBST([GENHASH_LIBS])
AM_CONDITIONAL([BUILD_GENHASH], [test $BUILD_GENHASH = Yes])
dnl ----[ Check for IPv4 devconf netlink support ]----
IPV4_DEVCONF=No
if test .$enable_vrrp != .no; then
dnl ----[Check have IPV4_DEVCONF defines - since Linux 3.11]----
SAV_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPP_FLAGS $kernelinc"
IPV4_DEVCONF=Yes
AC_CHECK_DECLS([
IPV4_DEVCONF_ARP_IGNORE,
IPV4_DEVCONF_ACCEPT_LOCAL,
IPV4_DEVCONF_RP_FILTER,
IPV4_DEVCONF_ARPFILTER],
[],
[
IPV4_DEVCONF=No
break
],
[[#include <linux/ip.h>]])
if test $IPV4_DEVCONF = Yes; then
AC_DEFINE([_HAVE_IPV4_DEVCONF_], [ 1 ], [Define to 1 if have IPv4 netlink device configuration])
add_system_opt([IPV4_DEVCONF])
fi
AC_CHECK_HEADERS([linux/rtnetlink.h], [], [AC_MSG_ERROR([Unusable linux/rtnetlink.h])], [$RTNETLINK_EXTRA_INCLUDE])
CPPFLAGS="$SAV_CPPFLAGS"
fi
dnl ----[ Check for IPv6 Advanced API (RFC3542) - since Linux 2.6.14 ]----
IPV6_ADVANCED_API=No
AC_CHECK_DECLS([
IPV6_RECVHOPLIMIT,
IPV6_RECVPKTINFO],
[IPV6_ADVANCED_API=Yes],
[],
[[#include <netinet/ip6.h>]])
AS_IF([test $IPV6_ADVANCED_API = Yes], [add_system_opt([IPV6_ADVANCED_API])])
dnl ----[ Checks for libraries ]----
NETLINK_VER=0
IPVS_USE_NL=No
if test .$enable_lvs != .no -a .${enable_libnl} != .no; then
$PKG_CONFIG --exists libnl-3.0
if test $? -eq 0; then
add_pkg_config([libnl-3.0], [NL3], [remove-requires])
AC_CHECK_LIB($NL3_LIB_NAMES, nl_socket_alloc,
[
NETLINK_VER=3
NEED_NL3=No
add_pkg_config([libnl-genl-3.0], [GENL], [remove-requires])
AC_CHECK_LIB($GENL_LIB_NAMES, genl_connect, [],
[AC_MSG_ERROR([libnl-3 is installed but not libnl-gen-3. Please, install libnl-gen-3/libnl-genl-3.])])
IPVS_USE_NL=Yes
if test .$enable_libnl_dynamic = .yes; then
add_pkg_config_without_libs([libnl-genl-3.0])
get_lib_name([$GENL_LIB_NAMES], [genl_connect])
AC_DEFINE_UNQUOTED([NL3_GENL_LIB_NAME], [ "$LIB_NAME" ], [Define the nl-genl-3.0 library name])
else
add_pkg_config([libnl-genl-3.0])
fi
NEED_NL3=Yes
if test $NEED_NL3 = Yes; then
AC_DEFINE([_HAVE_LIBNL3_], [ 1 ], [Define to 1 if using libnl-3])
add_system_opt([LIBNL3])
if test .$enable_libnl_dynamic = .yes; then
add_system_opt([LIBNL_DYNAMIC])
add_pkg_config_without_libs([libnl-3.0])
AC_DEFINE([_LIBNL_DYNAMIC_], [ 1 ], [Define to 1 if building with libnl dynamic linking])
NEED_LIBDL=Yes
get_lib_name([$NL3_LIB_NAMES], [nl_socket_alloc])
AC_DEFINE_UNQUOTED([NL3_LIB_NAME], [ "$LIB_NAME" ], [Define the nl-3 library name])
else
add_pkg_config([libnl-3.0])
fi
fi
], [])
fi
if test $NETLINK_VER -eq 0; then
AC_CHECK_LIB(nl, nl_socket_modify_cb,
[
IPVS_USE_NL=Yes
NETLINK_VER=1
AC_DEFINE([_HAVE_LIBNL1_], [ 1 ], [Define to 1 if using libnl-1])
add_system_opt([LIBNL1])
if test .$enable_libnl_dynamic = .yes; then
add_pkg_config_without_libs([libnl-1])
add_config_opt([LIBNL_DYNAMIC])
AC_DEFINE([_LIBNL_DYNAMIC_], [ 1 ], [Define to 1 if building with libnl dynamic linking])
NEED_LIBDL=Yes
get_lib_name([nl], [nl_socket_modify_cb])
AC_DEFINE_UNQUOTED([NL_LIB_NAME], [ "$LIB_NAME" ], [Define the nl library name])
else
add_pkg_config([libnl-1])