greenisland: fix cmake files for hawaii-shell

Signed-off-by: Andreas Müller <schnitzeltony@googlemail.com>

recipes-hawaii/greenisland/greenisland_git.bb

@@ -2,7 +2,7 @@ SUMMARY = "Support library to make Qt-based Wayland compositors development easi
 LICENSE = "LGPLv2.1"
 LIC_FILES_CHKSUM = "file://LICENSE.LGPL;md5=4fbd65380cdd255951079008b364516c"
 
-inherit cmake_qt5 pythonnative pkgconfig
+inherit cmake_qt5 cmake-lib pythonnative pkgconfig
 
 DEPENDS = " \
     ${@base_contains('DISTRO_FEATURES', 'systemd', 'systemd', '', d)} \
@@ -26,6 +26,10 @@ EXTRA_OECMAKE += " \
 	-DCMAKE_PROGRAM_PATH=${STAGING_DIR_NATIVE}/$bindir/qt5 \
 "
 
+# cross libs / headers
+CMAKE_HIDE_ERROR[1] = "GreenIsland, -S${libdir}/lib, -S${STAGING_LIBDIR}/lib"
+CMAKE_HIDE_ERROR[2] = "GreenIsland, -S${includedir}, -S${STAGING_INCDIR}"
+
 FILES_${PN} += "${libdir}/qml/GreenIsland"
 FILES_${PN}-dbg += "${libdir}/qml/GreenIsland/.debug"
 FILES_${PN}-dev += "${libdir}/cmake"