Index: src/external/CMakeLists.txt
===================================================================
--- darktable.orig/src/external/CMakeLists.txt
+++ darktable/src/external/CMakeLists.txt
@@ -13,17 +13,19 @@ endif()

 ################################################################################
 # RawSpeed block

 string(TOUPPER "${CMAKE_BUILD_TYPE}" CMAKE_BUILD_TYPE_UPPERCASE)

 set(RAWSPEED_${CMAKE_BUILD_TYPE_UPPERCASE}_BUILD 1)
 if(RAWSPEED_RELWITHDEBINFO_BUILD)
-  set(CMAKE_BUILD_TYPE "Release")
+  # openSUSE hack: we really do need to override CMAKE_BUILD_TYPE here.
+  set(VARNAME "CMAKE_BUILD_TYPE")
+  set(${VARNAME} "Release")
 endif()

 SET(COMPILER_SUPPORTS_DEBUG_INFO_COMPRESSION OFF)
 SET(COMPILER_SUPPORTS_DEBUG_INFO_COMPRESSION_LINK OFF)
 SET(COMPILER_SUPPORTS_SPLIT_DEBUG_INFO OFF)
 SET(LINKER_SUPPORTS_GDB_INDEX OFF)

 set(BUILD_TESTING_SAVE "${BUILD_TESTING}")