dnl Process this file with autoconf to produce a configure script
AC_INIT([osmo-cbc],
	m4_esyscmd([./git-version-gen .tarball-version]),
	[openbsc@lists.osmocom.org])
dnl *This* is the root dir, even if an install-sh exists in ../ or ../../
AC_CONFIG_AUX_DIR([.])
AM_INIT_AUTOMAKE([dist-bzip2 subdir-objects])
AC_CONFIG_TESTDIR(tests)
CFLAGS="$CFLAGS -std=gnu11"
dnl kernel style compile messages
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
dnl include release helper
RELMAKE='-include osmo-release.mk'
AC_SUBST([RELMAKE])
dnl checks for programs
AC_PROG_MAKE_SET
AC_PROG_CC
AC_PROG_INSTALL
LT_INIT
dnl check for pkg-config (explained in detail in libosmocore/configure.ac)
AC_PATH_PROG(PKG_CONFIG_INSTALLED, pkg-config, no)
if test "x$PKG_CONFIG_INSTALLED" = "xno"; then
        AC_MSG_WARN([You need to install pkg-config])
fi
PKG_PROG_PKG_CONFIG([0.20])
PKG_CHECK_MODULES(LIBOSMOCORE, libosmocore >= 1.10.0)
PKG_CHECK_MODULES(LIBOSMOVTY, libosmovty >= 1.10.0)
PKG_CHECK_MODULES(LIBOSMOGSM, libosmogsm >= 1.10.0)
PKG_CHECK_MODULES(LIBOSMONETIF, libosmo-netif >= 1.5.0)
PKG_CHECK_MODULES(ULFIUS, libulfius)
PKG_CHECK_MODULES(JANSSON, jansson)
PKG_CHECK_MODULES(ORCANIA, liborcania)
# Define asn1c skeleton files directory (See "asn1c -S 
").
# Used during "make -C src/ regen" to copy header files from there
ASN1C_SKELETON_PATH="/usr/share/asn1c"
ASN1C_BIN_PATH="/usr/bin/asn1c"
ASN_MODULE_CFLAGS="-DASN_DISABLE_BER_SUPPORT -DASN_DISABLE_XER_SUPPORT -DASN_DISABLE_JER_SUPPORT -DASN_DISABLE_OER_SUPPORT -DASN_DISABLE_UPER_SUPPORT"
AC_SUBST([ASN1C_SKELETON_PATH])
AC_SUBST([ASN1C_BIN_PATH])
AC_SUBST([ASN_MODULE_CFLAGS])
AC_CHECK_HEADERS(netinet/sctp.h,,AC_MSG_ERROR(netinet/sctp.h not found))
old_LIBS=$LIBS
AC_SEARCH_LIBS([sctp_recvmsg], [sctp], [
	AC_DEFINE(HAVE_LIBSCTP, 1, [Define 1 to enable SCTP support])
	AC_SUBST(HAVE_LIBSCTP, [1])
	if test -n "$ac_lib"; then
		AC_SUBST(LIBSCTP_LIBS, [-l$ac_lib])
	fi
	], [
	AC_MSG_ERROR([sctp_recvmsg not found in searched libs])])
LIBS=$old_LIBS
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 $WERROR_FLAGS"
fi
# The following test is taken from WebKit's webkit.m4
saved_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -fvisibility=hidden "
AC_MSG_CHECKING([if ${CC} supports -fvisibility=hidden])
AC_COMPILE_IFELSE([AC_LANG_SOURCE([char foo;])],
      [ AC_MSG_RESULT([yes])
        SYMBOL_VISIBILITY="-fvisibility=hidden"],
        AC_MSG_RESULT([no]))
CFLAGS="$saved_CFLAGS"
AC_SUBST(SYMBOL_VISIBILITY)
CFLAGS="$CFLAGS -Wall"
CPPFLAGS="$CPPFLAGS -Wall"
AC_ARG_ENABLE(doxygen,
	[AS_HELP_STRING(
		[--disable-doxygen],
		[Disable generation of documentation using doxygen],
	)],
	[doxygen=$enableval], [doxygen="yes"])
AC_PATH_PROG(DOXYGEN,doxygen,false)
AM_CONDITIONAL(HAVE_DOXYGEN, test $DOXYGEN != false && test "x$doxygen" = "xyes")
# 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$with_systemdsystemunitdir" != "xno"])
AC_ARG_ENABLE([external_tests],
		AC_HELP_STRING([--enable-external-tests],
				[Include the VTY/CTRL tests in make check [default=no]]),
		[enable_ext_tests="$enableval"],[enable_ext_tests="no"])
if test "x$enable_ext_tests" = "xyes" ; then
	AM_PATH_PYTHON
	AC_CHECK_PROG(OSMOTESTEXT_CHECK,osmo_verify_transcript_vty.py,yes)
	 if test "x$OSMOTESTEXT_CHECK" != "xyes" ; then
		AC_MSG_ERROR([Please install https://gitea.osmocom.org/cellular-infrastructure/osmo-python-tests to run the VTY/CTRL tests.])
	fi
fi
AC_MSG_CHECKING([whether to enable VTY/CTRL tests])
AC_MSG_RESULT([$enable_ext_tests])
AM_CONDITIONAL(ENABLE_EXT_TESTS, test "x$enable_ext_tests" = "xyes")
AC_MSG_RESULT([CFLAGS="$CFLAGS"])
AC_MSG_RESULT([CPPFLAGS="$CPPFLAGS"])
AC_OUTPUT(
    src/Makefile
    src/sbcap/Makefile
    include/Makefile
    include/osmocom/Makefile
    include/osmocom/cbc/Makefile
    include/osmocom/sbcap/Makefile
    contrib/Makefile
    tests/Makefile
    tests/sbcap/Makefile
    doc/Makefile
    doc/examples/Makefile
    doc/manuals/Makefile
    contrib/systemd/Makefile
    libosmo-sbcap.pc
    Makefile)