$OpenBSD: patch-src_core_CMakeLists_txt,v 1.21 2019/09/24 18:10:05 landry Exp $

takes many hours with the default (225)

Index: src/core/CMakeLists.txt
--- src/core/CMakeLists.txt.orig
+++ src/core/CMakeLists.txt
@@ -821,6 +821,7 @@ ELSE(MSVC)
   SET_SOURCE_FILES_PROPERTIES(${QGIS_CORE_MOC_SRCS} PROPERTIES COMPILE_FLAGS "-Wno-deprecated-declarations" )
   IF ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang" AND (CMAKE_BUILD_TYPE MATCHES Release OR CMAKE_BUILD_TYPE MATCHES RelWithDebInfo))
     SET_SOURCE_FILES_PROPERTIES(${CMAKE_CURRENT_BINARY_DIR}/qgsexpression_texts.cpp PROPERTIES COMPILE_FLAGS "-O1")
+    SET_SOURCE_FILES_PROPERTIES(qgscoordinatereferencesystem.cpp PROPERTIES COMPILE_FLAGS "-mllvm -inline-threshold=128")
   ENDIF ()
 ENDIF(MSVC)
 
