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107c813eee2ac654bf7ec92b7b01ba4b0af85503
osmo-ggsn/configure.ac
Eric 107c813eee configure.ac: fix libtool issue with clang and sanitizer 
As pointed out at https://github.com/libexpat/libexpat/issues/312
libtool does not play nice with clang sanitizer builds at all.
For those builds LD shoud be set to clang too (and LDFLAGS needs the
sanitizer flags as well), because the clang compiler driver knows how
linking to the sanitizer libs works, but then at a later stage libtool
fails to actually produce the shared libraries and the build fails. This
is fixed by this patch.

Addtionally LD_LIBRARY_PATH has no effect on conftest runs during
configure time, so the rpath needs to be set to the asan library path to
ensure the configure run does not fail due to a missing asan library,
i.e.:

SANS='-fsanitize=memory -fsanitize-recover=all -shared-libsan'
export CC=clang-10
ASANPATH=$(dirname `$CC -print-file-name=libclang_rt.asan-x86_64.so`)
export LDFLAGS="-Wl,-rpath,$ASANPATH $SANS $LDFLAGS"

Change-Id: Icc09c9d09bfa01264ddf867356d068e50d97c5a0
2020-04-14 13:07:47 +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))
# 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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