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dnl Process this file with autoconf to produce a configure script
AC_INIT([osmo-msc],
	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])
AC_CONFIG_TESTDIR(tests)

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])

dnl check for AX_CHECK_COMPILE_FLAG
m4_ifdef([AX_CHECK_COMPILE_FLAG], [], [
	AC_MSG_ERROR([Please install autoconf-archive; re-run 'autoreconf -fi' for it to take effect.])
	])


PKG_CHECK_MODULES(LIBOSMOCORE, libosmocore >= 0.11.0)
PKG_CHECK_MODULES(LIBOSMOVTY, libosmovty >= 0.11.0)
PKG_CHECK_MODULES(LIBOSMOCTRL, libosmoctrl >= 0.11.0)
PKG_CHECK_MODULES(LIBOSMOGSM, libosmogsm >= 0.11.0)
PKG_CHECK_MODULES(LIBOSMOABIS, libosmoabis >= 0.5.0)
PKG_CHECK_MODULES(LIBOSMONETIF, libosmo-netif >= 0.2.0)
PKG_CHECK_MODULES(LIBOSMOSIGTRAN, libosmo-sigtran >= 0.9.0)
PKG_CHECK_MODULES(LIBOSMOSCCP, libosmo-sccp >= 0.9.0)
PKG_CHECK_MODULES(LIBOSMOMGCPCLIENT, libosmo-mgcp-client >= 1.3.0)
PKG_CHECK_MODULES(LIBOSMOGSUPCLIENT, libosmo-gsup-client >= 0.2.1)

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

# Enable/disable smpp support in the msc?
AC_ARG_ENABLE([smpp], [AS_HELP_STRING([--enable-smpp], [Build the SMPP interface])],
    [osmo_ac_build_smpp="$enableval"],[osmo_ac_build_smpp="no"])
if test "$osmo_ac_build_smpp" = "yes" ; then
    PKG_CHECK_MODULES(LIBSMPP34, libsmpp34 >= 1.13.0)
    AC_DEFINE(BUILD_SMPP, 1, [Define if we want to build SMPP])
fi
AM_CONDITIONAL(BUILD_SMPP, test "x$osmo_ac_build_smpp" = "xyes")
AC_SUBST(osmo_ac_build_smpp)

# Enable/disable 3G aka IuPS + IuCS support?
AC_ARG_ENABLE([iu], [AS_HELP_STRING([--enable-iu], [Build 3G support, aka IuPS and IuCS interfaces])],
    [osmo_ac_iu="$enableval"],[osmo_ac_iu="no"])
if test "x$osmo_ac_iu" = "xyes" ; then
    PKG_CHECK_MODULES(LIBASN1C, libasn1c >= 0.9.30)
    PKG_CHECK_MODULES(LIBOSMORANAP, libosmo-ranap >= 0.3.0)
    AC_DEFINE(BUILD_IU, 1, [Define if we want to build IuPS and IuCS interfaces support])
fi
AM_CONDITIONAL(BUILD_IU, test "x$osmo_ac_iu" = "xyes")
AC_SUBST(osmo_ac_iu)

dnl checks for header files
AC_HEADER_STDC
AC_CHECK_HEADERS(dbi/dbd.h,,AC_MSG_ERROR(DBI library is not installed))

found_sqlite3=yes
PKG_CHECK_MODULES(SQLITE3, sqlite3, ,found_sqlite3=no)
AM_CONDITIONAL(HAVE_SQLITE3, test "$found_sqlite3" = yes)
AC_SUBST(found_sqlite3)


dnl Checks for typedefs, structures and compiler characteristics

# 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)

AX_CHECK_COMPILE_FLAG([-Werror=implicit], [CFLAGS="$CFLAGS -Werror=implicit"])
AX_CHECK_COMPILE_FLAG([-Werror=maybe-uninitialized], [CFLAGS="$CFLAGS -Werror=maybe-uninitialized"])
AX_CHECK_COMPILE_FLAG([-Werror=memset-transposed-args], [CFLAGS="$CFLAGS -Werror=memset-transposed-args"])
AX_CHECK_COMPILE_FLAG([-Werror=null-dereference], [CFLAGS="$CFLAGS -Werror=null-dereference"])
AX_CHECK_COMPILE_FLAG([-Werror=sizeof-array-argument], [CFLAGS="$CFLAGS -Werror=sizeof-array-argument"])
AX_CHECK_COMPILE_FLAG([-Werror=sizeof-pointer-memaccess], [CFLAGS="$CFLAGS -Werror=sizeof-pointer-memaccess"])

# Coverage build taken from WebKit's configure.in
AC_MSG_CHECKING([whether to enable code coverage support])
AC_ARG_ENABLE(coverage,
              AC_HELP_STRING([--enable-coverage],
                             [enable code coverage support [default=no]]),
              [],[enable_coverage="no"])
AC_MSG_RESULT([$enable_coverage])
if test "$enable_coverage" = "yes"; then
   COVERAGE_CFLAGS="-ftest-coverage -fprofile-arcs"
   COVERAGE_LDFLAGS="-ftest-coverage -fprofile-arcs"
   AC_SUBST([COVERAGE_CFLAGS])
   AC_SUBST([COVERAGE_LDFLAGS])
fi

AC_DEFUN([CHECK_TM_INCLUDES_TM_GMTOFF], [
  AC_CACHE_CHECK(
    [whether struct tm has tm_gmtoff member],
    osmo_cv_tm_includes_tm_gmtoff,
    [AC_LINK_IFELSE([
      AC_LANG_PROGRAM([
        #include <time.h>
      ], [
        time_t t = time(NULL);
        struct tm* lt = localtime(&t);
        int off = lt->tm_gmtoff;
      ])
    ],
    osmo_cv_tm_includes_tm_gmtoff=yes,
    osmo_cv_tm_includes_tm_gmtoff=no
    )]
  )
  if test "x$osmo_cv_tm_includes_tm_gmtoff" = xyes; then
    AC_DEFINE(HAVE_TM_GMTOFF_IN_TM, 1,
              [Define if struct tm has tm_gmtoff member.])
  fi
])

CHECK_TM_INCLUDES_TM_GMTOFF

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,osmotestvty.py,yes)
	 if test "x$OSMOTESTEXT_CHECK" != "xyes" ; then
		AC_MSG_ERROR([Please install git://osmocom.org/python/osmo-python-tests to run the VTY/CTRL tests.])
	fi
fi
AC_MSG_CHECKING([whether to enable VTY/CTRL tests])
AC_MSG_RESULT([$enable_ext_tests])
AM_CONDITIONAL(ENABLE_EXT_TESTS, test "x$enable_ext_tests" = "xyes")

# 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"])

dnl Generate the output
AM_CONFIG_HEADER(bscconfig.h)

AC_OUTPUT(
    include/Makefile
    include/osmocom/Makefile
    include/osmocom/msc/Makefile
    src/Makefile
    src/libmsc/Makefile
    src/libvlr/Makefile
    src/osmo-msc/Makefile
    src/utils/Makefile
    tests/Makefile
    tests/atlocal
    tests/smpp/Makefile
    tests/sms_queue/Makefile
    tests/msc_vlr/Makefile
    doc/Makefile
    doc/examples/Makefile
    contrib/Makefile
    contrib/systemd/Makefile
    Makefile)