Make OpenJPEGConfig.cmake relocatable with CMake > 3.0

[openjpeg.git] / CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index fcf4709dabc02068dd1a343c80e8a8976552c280..292b21321feafb467826a96e2df2ad3f7eb37201 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -304,12 +304,23 @@ if(BUILD_TESTING)
 endif()
 
 #-----------------------------------------------------------------------------
-# install all targets referenced as OPENJPEGTargets
+# install all targets referenced as OPENJPEGTargets (relocatable with CMake 3.0+)
 install(EXPORT OpenJPEGTargets DESTINATION ${OPENJPEG_INSTALL_PACKAGE_DIR})
-configure_file( ${${OPENJPEG_NAMESPACE}_SOURCE_DIR}/cmake/OpenJPEGConfig.cmake.in
-  ${${OPENJPEG_NAMESPACE}_BINARY_DIR}/OpenJPEGConfig.cmake
-  @ONLY
-)
+if (${CMAKE_VERSION} VERSION_LESS 3.0)
+  set(PACKAGE_INIT)
+  set(PACKAGE_CMAKE_INSTALL_INCLUDEDIR ${CMAKE_INSTALL_FULL_INCLUDEDIR})
+  configure_file( ${${OPENJPEG_NAMESPACE}_SOURCE_DIR}/cmake/OpenJPEGConfig.cmake.in
+    ${${OPENJPEG_NAMESPACE}_BINARY_DIR}/OpenJPEGConfig.cmake
+    @ONLY
+  )
+else()
+  include(CMakePackageConfigHelpers)
+  configure_package_config_file(${CMAKE_CURRENT_LIST_DIR}/cmake/OpenJPEGConfig.cmake.in
+    ${OPENJPEG_BINARY_DIR}/OpenJPEGConfig.cmake
+    INSTALL_DESTINATION ${OPENJPEG_INSTALL_PACKAGE_DIR}
+    PATH_VARS CMAKE_INSTALL_INCLUDEDIR)
+endif()
+
 install( FILES ${OPENJPEG_BINARY_DIR}/OpenJPEGConfig.cmake
   DESTINATION ${OPENJPEG_INSTALL_PACKAGE_DIR}
 )