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dnl Copyright 2009 Johan Dahlin
dnl
dnl This file is free software; the author(s) gives unlimited
dnl permission to copy and/or distribute it, with or without
dnl modifications, as long as this notice is preserved.
dnl

# serial 1

m4_define([_GOBJECT_INTROSPECTION_CHECK_INTERNAL],
[
    AC_BEFORE([AC_PROG_LIBTOOL],[$0])dnl setup libtool first
    AC_BEFORE([AM_PROG_LIBTOOL],[$0])dnl setup libtool first
    AC_BEFORE([LT_INIT],[$0])dnl setup libtool first

    dnl enable/disable introspection
    m4_if([$2], [require],
    [dnl
        enable_introspection=yes
    ],[dnl
        AC_ARG_ENABLE(introspection,
                  AS_HELP_STRING([--enable-introspection[=@<:@no/auto/yes@:>@]],
                                 [Enable introspection for this build]),,
                                 [enable_introspection=auto])
    ])dnl

    INTROSPECTION_SCANNER=
    INTROSPECTION_COMPILER=
    INTROSPECTION_GENERATE=
    INTROSPECTION_GIRDIR=
    INTROSPECTION_TYPELIBDIR=

    if test "x$enable_introspection" == "xno"; then
      found_introspection="no"
    else
       PKG_CHECK_EXISTS([gobject-introspection-1.0 >= $1], [
           INTROSPECTION_SCANNER=`$PKG_CONFIG --variable=g_ir_scanner gobject-introspection-1.0`
           INTROSPECTION_COMPILER=`$PKG_CONFIG --variable=g_ir_compiler gobject-introspection-1.0`
           INTROSPECTION_GENERATE=`$PKG_CONFIG --variable=g_ir_generate gobject-introspection-1.0`
           INTROSPECTION_GIRDIR=`$PKG_CONFIG --variable=girdir gobject-introspection-1.0`
           INTROSPECTION_TYPELIBDIR="$($PKG_CONFIG --variable=typelibdir gobject-introspection-1.0)"
           INTROSPECTION_CFLAGS=`$PKG_CONFIG --cflags gobject-introspection-1.0`
           INTROSPECTION_LIBS=`$PKG_CONFIG --libs gobject-introspection-1.0`
           INTROSPECTION_MAKEFILE=`$PKG_CONFIG --variable=datadir gobject-introspection-1.0`/gobject-introspection-1.0/Makefile.introspection

           AC_MSG_CHECKING([if $INTROSPECTION_SCANNER works])
           if CFLAGS="${CFLAGS} -Wno-error" "$INTROSPECTION_SCANNER" --namespace=test --library=c /dev/null --output /dev/null >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then
               found_introspection=yes
           else
               found_introspection="no (compiler failure -- check config.log)"
           fi
           AC_MSG_RESULT([$found_introspection])
       ], [found_introspection="no (not installed)"])

       if test "x$enable_introspection" == "xyes"; then
          if test "x$found_introspection" != "xyes"; then
              AC_MSG_ERROR([introspection enabled but can't be used])
          fi
       elif test "x$enable_introspection" != "xauto"; then
          AC_MSG_ERROR([invalid argument passed to --enable-introspection, should be one of @<:@no/auto/yes@:>@])
       fi
    fi

    AC_SUBST(INTROSPECTION_SCANNER, 'CFLAGS="${CFLAGS} -Wno-error" '"$INTROSPECTION_SCANNER")
    AC_SUBST(INTROSPECTION_COMPILER)
    AC_SUBST(INTROSPECTION_GENERATE)
    AC_SUBST(INTROSPECTION_GIRDIR)
    AC_SUBST(INTROSPECTION_TYPELIBDIR)
    AC_SUBST(INTROSPECTION_CFLAGS)
    AC_SUBST(INTROSPECTION_LIBS)
    AC_SUBST(INTROSPECTION_MAKEFILE)

    AM_CONDITIONAL(HAVE_INTROSPECTION, test "x$found_introspection" = "xyes")
])


dnl Usage:
dnl   GOBJECT_INTROSPECTION_CHECK([minimum-g-i-version])

AC_DEFUN([GOBJECT_INTROSPECTION_CHECK],
[
  _GOBJECT_INTROSPECTION_CHECK_INTERNAL([$1])
])

dnl Usage:
dnl   GOBJECT_INTROSPECTION_REQUIRE([minimum-g-i-version])


AC_DEFUN([GOBJECT_INTROSPECTION_REQUIRE],
[
  _GOBJECT_INTROSPECTION_CHECK_INTERNAL([$1], [require])
])