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ff2ebee03baf92609dc14bb1324cd069bf5c8323
osmo-ggsn/configure.ac
Pau Espin Pedrol ff2ebee03b sgsnemu: Fix build/run against linux < 4.11 (no sysctl addr_gen_mode support) 
On older systems (like debian 8), the enum is not present in the header
file and build will fail (as saw in osmocom's OBS instance).
Furthermore, the sysctl to change the value was added at a later point
in time, which means compiling can go fine but running may fail due to
the sysctl not being available.

This is a fix-up to Change-Id I1d51f3ca91edbb3b788939982ab63264182ec2ce

Change-Id: I208970d5b16ea7148444d414b0a6f68c8d9a086c
2020-04-19 08:29:35 +00:00

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# Process this file with autoconf to produce a configure script.
AC_INIT([osmo-ggsn],[m4_esyscmd(./git-version-gen .tarball-version)],[osmocom-net-gprs@lists.osmocom.org])
AC_CONFIG_SRCDIR([gtp/gtp.c])
AC_CONFIG_HEADERS([config.h])
dnl *This* is the root dir, even if an install-sh exists in ../ or ../../
AC_CONFIG_AUX_DIR([.])
AC_CONFIG_TESTDIR(tests)
AC_CANONICAL_HOST
dnl kernel style compile messages
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
# Checks for programs.
AC_PROG_CC
AC_PROG_INSTALL
AC_PROG_AWK
AC_PROG_CPP
LT_INIT
dnl patching ${archive_cmds} to affect generation of file "libtool" to fix linking with clang
AS_CASE(["$LD"],[*clang*],
[AS_CASE(["${host_os}"],
[*linux*],[archive_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-soname $wl$soname -o $lib'])])
dnl check for pkg-config (explained in detail in libosmocore/configure.ac)
AC_PATH_PROG(PKG_CONFIG_INSTALLED, pkg-config, no)
if test "x$PKG_CONFIG_INSTALLED" = "xno"; then
AC_MSG_WARN([You need to install pkg-config])
fi
PKG_PROG_PKG_CONFIG([0.20])
AC_CONFIG_MACRO_DIR([m4])
AC_CONFIG_LIBOBJ_DIR([lib])
AC_ARG_ENABLE(static-exec,
[ --enable-static-exec Enable static linking of executables],
[ EXEC_LDFLAGS="-all-static"])
AC_SUBST(EXEC_LDFLAGS)
case "${host}" in
i*86-*-linux-gnu*)
EXEC_LDADD="" ;;
*solaris*)
EXEC_LDADD="-lresolv -lsocket -lnsl" ;;
esac
AC_SUBST(EXEC_LDADD)
# Checks for libraries.
# FIXME: Replace `main' with a function in `-le':
#AC_CHECK_LIB([e], [main])
# FIXME: Replace `main' with a function in `-lgtp':
#AC_CHECK_LIB([gtp], [main])
# FIXME: Replace `main' with a function in `-links':
#AC_CHECK_LIB([inks], [main])
dnl include release helper
RELMAKE='-include osmo-release.mk'
AC_SUBST([RELMAKE])
dnl GTP Linux kernel dependencies
AC_ARG_ENABLE([gtp-linux],
AS_HELP_STRING([--enable-gtp-linux], [Build GTP tunneling Linux kernel]),
[enable_gtp_linux="$enableval"], [enable_gtp_linux="no"])
AS_IF([test "x$enable_gtp_linux" = "xyes"], [
PKG_CHECK_MODULES([LIBGTPNL], [libgtpnl >= 1.2.0])
])
AM_CONDITIONAL([ENABLE_GTP_KERNEL], [test "$enable_gtp_linux" = "yes"])
# Checks for header files.
AC_HEADER_STDC
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS([arpa/inet.h fcntl.h netdb.h netinet/in.h stdint.h stdlib.h string.h sys/ioctl.h sys/socket.h sys/time.h unistd.h])
# Check for if header. Some versions of linux/if.h fail without sys/socket.h included beforehand:
# see https://algorithmicallyrandom.blogspot.com/2012/07/error-on-including-include.html
AC_CHECK_HEADERS([linux/if.h net/if.h], [], [], [#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
# endif
])
# Check for tun header
AC_CHECK_HEADERS([linux/if_tun.h net/if_tun.h])
# Check for netlink and rtnetlink headers
AC_CHECK_HEADERS([linux/netlink.h linux/rtnetlink.h])
# Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_TYPE_MODE_T
AC_TYPE_SIZE_T
AC_HEADER_TIME
# check for ifaliasreq
AC_MSG_CHECKING(whether struct ifaliasreq exist)
AH_TEMPLATE(HAVE_IFALIASREQ)
AC_EGREP_HEADER(ifaliasreq, net/if.h,
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_IFALIASREQ])],
AC_MSG_RESULT(no))
# check for ifreq.ifru_netmask
AC_MSG_CHECKING(whether struct ifreq.ifru_netmask exist)
AH_TEMPLATE(HAVE_IFREQ_IFRU_NETMASK)
AC_EGREP_HEADER(ifru_netmask, linux/if.h,
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_IFREQ_IFRU_NETMASK])],
AC_MSG_RESULT(no))
# check for rt_msghdr
AC_MSG_CHECKING(whether struct rt_msghdr exist)
AH_TEMPLATE(HAVE_RT_MSGHDR)
AC_EGREP_HEADER(rt_msghdr, net/route.h,
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_RT_MSGHDR])],
AC_MSG_RESULT(no))
AC_MSG_CHECKING(whether struct iphdr exists)
AH_TEMPLATE(HAVE_IPHDR)
AC_EGREP_HEADER(struct iphdr, netinet/ip.h,
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_IPHDR])],
AC_MSG_RESULT(no))
# Address generation modes (enum) implemented in linux 3.17 (bc91b0f07ada5535427373a4e2050877bcc12218)
# /proc/sys/net/ipv6/conf/${iface}/addr_gen_mode was added in linux 4.11 (d35a00b8e33dab7385f724e713ae71c8be0a49f4)
AC_MSG_CHECKING(whether enum in6_addr_gen_mode.IN6_ADDR_GEN_MODE_NONE exists)
AH_TEMPLATE(HAVE_IN6_ADDR_GEN_MODE_NONE)
AC_EGREP_HEADER(IN6_ADDR_GEN_MODE_NONE, linux/if_link.h,
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_IN6_ADDR_GEN_MODE_NONE])],
AC_MSG_RESULT(no))
# Checks for library functions.
AC_PROG_GCC_TRADITIONAL
# AC_FUNC_MALLOC
# AC_FUNC_MEMCMP
AC_CHECK_FUNCS([gethostbyname inet_ntoa memset select socket strdup strerror strtol])
AC_CHECK_FUNCS(inet_aton inet_addr, break)
# check for getopt in standard library
adl_FUNC_GETOPT_LONG
AM_INIT_AUTOMAKE([foreign])
PKG_CHECK_MODULES(LIBOSMOCORE, libosmocore >= 1.1.0)
PKG_CHECK_MODULES(LIBOSMOVTY, libosmovty >= 1.1.0)
PKG_CHECK_MODULES(LIBOSMOCTRL, libosmoctrl >= 1.1.0)
AC_ARG_ENABLE(sanitize,
[AS_HELP_STRING(
[--enable-sanitize],
[Compile with address sanitizer enabled],
)],
[sanitize=$enableval], [sanitize="no"])
if test x"$sanitize" = x"yes"
then
CFLAGS="$CFLAGS -fsanitize=address -fsanitize=undefined"
CPPFLAGS="$CPPFLAGS -fsanitize=address -fsanitize=undefined"
fi
AC_ARG_ENABLE(werror,
[AS_HELP_STRING(
[--enable-werror],
[Turn all compiler warnings into errors, with exceptions:
a) deprecation (allow upstream to mark deprecation without breaking builds);
b) "#warning" pragmas (allow to remind ourselves of errors without breaking builds)
]
)],
[werror=$enableval], [werror="no"])
if test x"$werror" = x"yes"
then
WERROR_FLAGS="-Werror"
WERROR_FLAGS+=" -Wno-error=deprecated -Wno-error=deprecated-declarations"
WERROR_FLAGS+=" -Wno-error=cpp" # "#warning"
CFLAGS="$CFLAGS $WERROR_FLAGS"
CPPFLAGS="$CPPFLAGS $WERROR_FLAGS"
fi
# Generate manuals
AC_ARG_ENABLE(manuals,
[AS_HELP_STRING(
[--enable-manuals],
[Generate manual PDFs [default=no]],
)],
[osmo_ac_build_manuals=$enableval], [osmo_ac_build_manuals="no"])
AM_CONDITIONAL([BUILD_MANUALS], [test x"$osmo_ac_build_manuals" = x"yes"])
AC_ARG_VAR(OSMO_GSM_MANUALS_DIR, [path to common osmo-gsm-manuals files, overriding pkg-config and "../osmo-gsm-manuals"
fallback])
if test x"$osmo_ac_build_manuals" = x"yes"
then
# Find OSMO_GSM_MANUALS_DIR (env, pkg-conf, fallback)
if test -n "$OSMO_GSM_MANUALS_DIR"; then
echo "checking for OSMO_GSM_MANUALS_DIR... $OSMO_GSM_MANUALS_DIR (from env)"
else
OSMO_GSM_MANUALS_DIR="$($PKG_CONFIG osmo-gsm-manuals --variable=osmogsmmanualsdir 2>/dev/null)"
if test -n "$OSMO_GSM_MANUALS_DIR"; then
echo "checking for OSMO_GSM_MANUALS_DIR... $OSMO_GSM_MANUALS_DIR (from pkg-conf)"
else
OSMO_GSM_MANUALS_DIR="../osmo-gsm-manuals"
echo "checking for OSMO_GSM_MANUALS_DIR... $OSMO_GSM_MANUALS_DIR (fallback)"
fi
fi
if ! test -d "$OSMO_GSM_MANUALS_DIR"; then
AC_MSG_ERROR("OSMO_GSM_MANUALS_DIR does not exist! Install osmo-gsm-manuals or set OSMO_GSM_MANUALS_DIR.")
fi
# Find and run check-depends
CHECK_DEPENDS="$OSMO_GSM_MANUALS_DIR/check-depends.sh"
if ! test -x "$CHECK_DEPENDS"; then
CHECK_DEPENDS="osmo-gsm-manuals-check-depends"
fi
if ! $CHECK_DEPENDS; then
AC_MSG_ERROR("missing dependencies for --enable-manuals")
fi
# Put in Makefile with absolute path
OSMO_GSM_MANUALS_DIR="$(realpath "$OSMO_GSM_MANUALS_DIR")"
AC_SUBST([OSMO_GSM_MANUALS_DIR])
fi
# https://www.freedesktop.org/software/systemd/man/daemon.html
AC_ARG_WITH([systemdsystemunitdir],
[AS_HELP_STRING([--with-systemdsystemunitdir=DIR], [Directory for systemd service files])],,
[with_systemdsystemunitdir=auto])
AS_IF([test "x$with_systemdsystemunitdir" = "xyes" -o "x$with_systemdsystemunitdir" = "xauto"], [
def_systemdsystemunitdir=$($PKG_CONFIG --variable=systemdsystemunitdir systemd)
AS_IF([test "x$def_systemdsystemunitdir" = "x"],
[AS_IF([test "x$with_systemdsystemunitdir" = "xyes"],
[AC_MSG_ERROR([systemd support requested but pkg-config unable to query systemd package])])
with_systemdsystemunitdir=no],
[with_systemdsystemunitdir="$def_systemdsystemunitdir"])])
AS_IF([test "x$with_systemdsystemunitdir" != "xno"],
[AC_SUBST([systemdsystemunitdir], [$with_systemdsystemunitdir])])
AM_CONDITIONAL([HAVE_SYSTEMD], [test "x$with_systemdsystemunitdir" != "xno"])
AC_MSG_RESULT([CFLAGS="$CFLAGS"])
AC_MSG_RESULT([CPPFLAGS="$CPPFLAGS"])
AC_CONFIG_FILES([Makefile
doc/Makefile
doc/examples/Makefile
ggsn/Makefile
gtp/Makefile
lib/Makefile
intl/Makefile
po/Makefile
sgsnemu/Makefile
doc/manuals/Makefile
contrib/Makefile
contrib/systemd/Makefile
tests/Makefile
tests/lib/Makefile
tests/gtp/Makefile
libgtp.pc
osmo-ggsn.spec])
AC_OUTPUT
echo "
osmo-ggsn Configuration:
GTP Linux kernel support: ${enable_gtp_linux}"
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