From 2187bc3f1e51a225042cd0c33d0794d8515386ca Mon Sep 17 00:00:00 2001
From: kervala <devnull@localhost>
Date: Tue, 15 Dec 2015 13:41:07 +0100
Subject: [PATCH] Fixed: Include directories with Qt 5 CMake modules in PCH

---
 code/CMakeModules/PCHSupport.cmake | 62 +++++++++++++++++++++++++++++-
 1 file changed, 61 insertions(+), 1 deletion(-)

diff --git a/code/CMakeModules/PCHSupport.cmake b/code/CMakeModules/PCHSupport.cmake
index f3ac564a9..45353d924 100644
--- a/code/CMakeModules/PCHSupport.cmake
+++ b/code/CMakeModules/PCHSupport.cmake
@@ -40,12 +40,15 @@ MACRO(PCH_SET_COMPILE_FLAGS _target)
 
   GET_TARGET_PROPERTY(_targetType ${_target} TYPE)
 
+  SET(_USE_PIE OFF)
+
   IF(${_targetType} STREQUAL "SHARED_LIBRARY" OR ${_targetType} STREQUAL "MODULE_LIBRARY")
     LIST(APPEND _FLAGS " ${CMAKE_SHARED_LIBRARY_CXX_FLAGS}")
   ELSE()
     GET_TARGET_PROPERTY(_pic ${_target} POSITION_INDEPENDENT_CODE)
+    MESSAGE(STATUS "Target ${_target} is using PIE")
     IF(_pic)
-      LIST(APPEND _FLAGS " ${CMAKE_CXX_COMPILE_OPTIONS_PIE}")
+      SET(_USE_PIE ON)
     ENDIF()
   ENDIF()
 
@@ -70,6 +73,20 @@ MACRO(PCH_SET_COMPILE_FLAGS _target)
     ENDFOREACH()
   ENDIF()
 
+  GET_DIRECTORY_PROPERTY(DEFINITIONS DIRECTORY ${CMAKE_SOURCE_DIR} COMPILE_DEFINITIONS)
+  IF(DEFINITIONS)
+    FOREACH(item ${DEFINITIONS})
+      LIST(APPEND GLOBAL_DEFINITIONS " -D${item}")
+    ENDFOREACH()
+  ENDIF()
+
+  GET_DIRECTORY_PROPERTY(DEFINITIONS DIRECTORY ${CMAKE_SOURCE_DIR} COMPILE_DEFINITIONS_${_UPPER_BUILD})
+  IF(DEFINITIONS)
+    FOREACH(item ${DEFINITIONS})
+      LIST(APPEND GLOBAL_DEFINITIONS " -D${item}")
+    ENDFOREACH()
+  ENDIF()
+
   GET_TARGET_PROPERTY(oldProps ${_target} COMPILE_FLAGS)
   IF(oldProps)
     LIST(APPEND _FLAGS " ${oldProps}")
@@ -101,6 +118,49 @@ MACRO(PCH_SET_COMPILE_FLAGS _target)
     ENDFOREACH()
   ENDIF()
 
+  GET_TARGET_PROPERTY(_LIBS ${_target} INTERFACE_LINK_LIBRARIES)
+  IF(_LIBS)
+    FOREACH(_LIB ${_LIBS})
+      IF(TARGET "${_LIB}")
+        # use same include directories
+        GET_TARGET_PROPERTY(_DIRS ${_LIB} INTERFACE_INCLUDE_DIRECTORIES)
+
+        IF(_DIRS)
+          FOREACH(item ${_DIRS})
+            LIST(APPEND GLOBAL_DEFINITIONS " -I\"${item}\"")
+          ENDFOREACH()
+        ENDIF()
+
+        # use same compile definitions
+        GET_TARGET_PROPERTY(_DEFINITIONS ${_LIB} INTERFACE_COMPILE_DEFINITIONS)
+
+        IF(_DEFINITIONS)
+          FOREACH(item ${_DEFINITIONS})
+            # don't use dynamic expressions
+            IF(NOT item MATCHES "\\$<")
+              LIST(APPEND GLOBAL_DEFINITIONS " -D${item}")
+            ENDIF()
+          ENDFOREACH()
+        ENDIF()
+      ENDIF()
+    ENDFOREACH()
+  ENDIF()
+
+  # Hack to define missing QT_NO_DEBUG with Qt 5.2
+  IF(USE_QT5 AND _UPPER_BUILD STREQUAL "RELEASE")
+    LIST(APPEND GLOBAL_DEFINITIONS " -DQT_NO_DEBUG")
+  ENDIF()
+
+  # Qt5_POSITION_INDEPENDENT_CODE should be true if Qt was compiled with PIE
+  IF(Qt5_POSITION_INDEPENDENT_CODE)
+    SET(_USE_PIE ON)
+  ENDIF()
+
+  IF(_USE_PIE)
+    LIST(APPEND _FLAGS " ${CMAKE_CXX_COMPILE_OPTIONS_PIE}")
+    LIST(APPEND _FLAGS " ${CMAKE_CXX_COMPILE_OPTIONS_PIC}")
+  ENDIF()
+
   LIST(APPEND _FLAGS " ${GLOBAL_DEFINITIONS}")
 
   IF(CMAKE_VERSION VERSION_LESS "3.3.0")