dnl vapigen.m4

dnl

dnl Copyright 2012 Evan Nemerson

dnl

dnl This library is free software; you can redistribute it and/or

dnl modify it under the terms of the GNU Lesser General Public

dnl License as published by the Free Software Foundation; either

dnl version 2.1 of the License, or (at your option) any later version.

dnl

dnl This library is distributed in the hope that it will be useful,

dnl but WITHOUT ANY WARRANTY; without even the implied warranty of

dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

dnl Lesser General Public License for more details.

dnl

dnl You should have received a copy of the GNU Lesser General Public

dnl License along with this library; if not, write to the Free Software

dnl Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA

# VAPIGEN_CHECK([VERSION], [API_VERSION], [FOUND_INTROSPECTION], [DEFAULT])

# --------------------------------------

# Check vapigen existence and version

#

# See http://live.gnome.org/Vala/UpstreamGuide for detailed documentation

AC_DEFUN([VAPIGEN_CHECK],

[

  AS_IF([test "x$3" != "xyes"], [

      m4_provide_if([GOBJECT_INTROSPECTION_CHECK], [], [

          m4_provide_if([GOBJECT_INTROSPECTION_REQUIRE], [], [

              AC_MSG_ERROR([[You must call GOBJECT_INTROSPECTION_CHECK or GOBJECT_INTROSPECTION_REQUIRE before using VAPIGEN_CHECK unless using the FOUND_INTROSPECTION argument is "yes"]])

            ])

        ])

    ])

  AC_ARG_ENABLE([vala],

    [AS_HELP_STRING([--enable-vala[=@<:@no/auto/yes@:>@]],[build Vala bindings @<:@default=]ifelse($4,,auto,$4)[@:>@])],,[

      AS_IF([test "x$4" = "x"], [

          enable_vala=auto

        ], [

          enable_vala=$4

        ])

    ])

  AS_CASE([$enable_vala], [no], [enable_vala=no],

      [yes], [

        AS_IF([test "x$3" != "xyes" -a "x$found_introspection" != "xyes"], [

            AC_MSG_ERROR([Vala bindings require GObject Introspection])

          ])

      ], [auto], [

        AS_IF([test "x$3" != "xyes" -a "x$found_introspection" != "xyes"], [

            enable_vala=no

          ])

      ], [

        AC_MSG_ERROR([Invalid argument passed to --enable-vala, should be one of @<:@no/auto/yes@:>@])

      ])

  AS_IF([test "x$2" = "x"], [

      vapigen_pkg_name=vapigen

    ], [

      vapigen_pkg_name=vapigen-$2

    ])

  AS_IF([test "x$1" = "x"], [

      vapigen_pkg="$vapigen_pkg_name"

    ], [

      vapigen_pkg="$vapigen_pkg_name >= $1"

    ])

  PKG_PROG_PKG_CONFIG

  PKG_CHECK_EXISTS([$vapigen_pkg], [

      AS_IF([test "$enable_vala" = "auto"], [

          enable_vala=yes

        ])

    ], [

      AS_CASE([$enable_vala], [yes], [

          AC_MSG_ERROR([$vapigen_pkg not found])

        ], [auto], [

          enable_vala=no

        ])

    ])

  AC_MSG_CHECKING([for vapigen])

  AS_CASE([$enable_vala],

    [yes], [

      VAPIGEN=`$PKG_CONFIG --variable=vapigen $vapigen_pkg_name`

      VAPIGEN_MAKEFILE=`$PKG_CONFIG --variable=datadir $vapigen_pkg_name`/vala/Makefile.vapigen

      AS_IF([test "x$2" = "x"], [

          VAPIGEN_VAPIDIR=`$PKG_CONFIG --variable=vapidir $vapigen_pkg_name`

        ], [

          VAPIGEN_VAPIDIR=`$PKG_CONFIG --variable=vapidir_versioned $vapigen_pkg_name`

        ])

    ])

  AC_MSG_RESULT([$enable_vala])

  AC_SUBST([VAPIGEN])

  AC_SUBST([VAPIGEN_VAPIDIR])

  AC_SUBST([VAPIGEN_MAKEFILE])

  AM_CONDITIONAL(ENABLE_VAPIGEN, test "x$enable_vala" = "xyes")

])