From e3c565ce27664969f8fb14f680ec39917f18079a Mon Sep 17 00:00:00 2001
From: "Dipl.-Ing. Jonas Stienen" <jst@akustik.rwth-aachen.de>
Date: Wed, 18 Apr 2018 15:45:20 +0200
Subject: [PATCH] Replacing cmake source variables with cmake CURRENT source
 variables for correct relative paths when libcitygml is not build from the
 original CMakeLists but as a subdirectory

---
 CMakeLists.txt           | 4 ++--
 osgplugin/CMakeLists.txt | 2 +-
 sources/CMakeLists.txt   | 2 +-
 test/CMakeLists.txt      | 2 +-
 4 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index f3d5f925..19f31932 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,7 +8,7 @@ set(META_VERSION_PATCH       "8")
 
 set(META_VERSION             "${META_VERSION_MAJOR}.${META_VERSION_MINOR}.${META_VERSION_PATCH}")
 
-SET( CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/CMakeModules" )
+SET( CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/CMakeModules" )
 
 IF(WIN32)
 
@@ -197,7 +197,7 @@ IF(UNIX AND NOT APPLE)
       set(CPACK_PACKAGE_VERSION_MAJOR         "${META_VERSION_MAJOR}")
       set(CPACK_PACKAGE_VERSION_MINOR         "${META_VERSION_MINOR}")
       set(CPACK_PACKAGE_VERSION_PATCH         "${META_VERSION_PATCH}")
-      set(CPACK_RESOURCE_FILE_LICENSE         "${CMAKE_SOURCE_DIR}/LICENSE")
+      set(CPACK_RESOURCE_FILE_LICENSE         "${CMAKE_CURRENT_SOURCE_DIR}/LICENSE")
       set(CPACK_PACKAGE_RELOCATABLE           OFF)
 
       # Debian package information
diff --git a/osgplugin/CMakeLists.txt b/osgplugin/CMakeLists.txt
index 1bc3ade5..c4cbf2a4 100644
--- a/osgplugin/CMakeLists.txt
+++ b/osgplugin/CMakeLists.txt
@@ -5,7 +5,7 @@ find_package( OpenSceneGraph REQUIRED osgDB osgViewer osgGA osgUtil osgText)
 
 include_directories(
   ${OPENSCENEGRAPH_INCLUDE_DIRS}
-  ${CMAKE_SOURCE_DIR}/sources/include
+  ${CMAKE_CURRENT_SOURCE_DIR}/../sources/include
 )
 
 set( sources ReaderWriterCityGML.cpp )
diff --git a/sources/CMakeLists.txt b/sources/CMakeLists.txt
index 3b4d9d25..eb7480a0 100644
--- a/sources/CMakeLists.txt
+++ b/sources/CMakeLists.txt
@@ -1,7 +1,7 @@
 include(GenerateExportHeader)
 
 IF (NOT DEFINED CMAKE_MODULE_PATH)
-  GET_FILENAME_COMPONENT(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/../CMakeModules" ABSOLUTE)
+  GET_FILENAME_COMPONENT(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/../CMakeModules" ABSOLUTE)
 ENDIF (NOT DEFINED CMAKE_MODULE_PATH)
 
 SET( target citygml )
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 5c2271c3..31026369 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -12,7 +12,7 @@ ELSE( LIBCITYGML_DYNAMIC )
 ENDIF( LIBCITYGML_DYNAMIC )
 
 # INCLUDE_DIRECTORIES( ${CITYGML_INCLUDE_DIR} )
-INCLUDE_DIRECTORIES( ${CMAKE_SOURCE_DIR}/sources/include ${CMAKE_BINARY_DIR}/sources/include)
+INCLUDE_DIRECTORIES( ${CMAKE_CURRENT_SOURCE_DIR}/../sources/include ${CMAKE_BINARY_DIR}/sources/include)
 
 SET( PRG_SRCS citygmltest.cpp )