AC_SUBST(BUILD_GTK_CFLAGS)
AC_SUBST(BUILD_GTK_LIBS)
PKG_PATH=
PKG_PATH=''
AC_ARG_WITH(crosspkgdir, [ --with-crosspkgdir=/path/to/pkg-config/dir],
if test x$with_crosspkgdir = "x"; then
if test -s $PKG_CONFIG_PATH; then