Updated cmake to be more friendly for subdirectory usage

Author: agruzdev

CMakeLists.txt

@@ -1,17 +1,20 @@
 cmake_minimum_required(VERSION 3.28)
 
-set_property(GLOBAL PROPERTY USE_FOLDERS ON)
-
 project(FreeImageRe)
 
 set(FREEIMAGERE_MAJOR_VERSION "0")
 set(FREEIMAGERE_MINOR_VERSION "6")
 
-set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
-set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
-set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
+if (PROJECT_IS_TOP_LEVEL)
+    set_property(GLOBAL PROPERTY USE_FOLDERS ON)
+
+    set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
+    set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
+    set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
+
+    set(CMAKE_INSTALL_DOCDIR doc)
+endif()
 
-set(CMAKE_INSTALL_DOCDIR doc)
 
 set(CMAKE_POLICY_DEFAULT_CMP0077 "NEW")
 cmake_policy(SET CMP0079 NEW) # -> target_link_libraries() allows use with targets in other directories.
@@ -25,62 +28,62 @@ set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 # External dependencies
-include(${CMAKE_SOURCE_DIR}/cmake/dependency.zlib.cmake)
-include(${CMAKE_SOURCE_DIR}/cmake/dependency.yato.cmake)
+include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/dependency.zlib.cmake)
+include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/dependency.yato.cmake)
 
 option(FREEIMAGE_WITH_LIBJPEG "Compile with the LibJPEG backend" ON)
 if (FREEIMAGE_WITH_LIBJPEG)
-    include(${CMAKE_SOURCE_DIR}/cmake/dependency.jpeg.cmake)
+    include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/dependency.jpeg.cmake)
 endif()
 
 option(FREEIMAGE_WITH_LIBOPENJPEG "Compile with the LibOpenJPEG backend" ON)
 if (FREEIMAGE_WITH_LIBOPENJPEG)
-    include(${CMAKE_SOURCE_DIR}/cmake/dependency.openjpeg.cmake)
+    include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/dependency.openjpeg.cmake)
 endif()
 
 option(FREEIMAGE_WITH_LIBOPENEXR "Compile with the LibOpenEXR backend" ON)
 if (FREEIMAGE_WITH_LIBOPENEXR)
-    include(${CMAKE_SOURCE_DIR}/cmake/dependency.openexr.cmake)
+    include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/dependency.openexr.cmake)
 endif()
 
 option(FREEIMAGE_WITH_LIBPNG "Compile with the LibPNG backend" ON)
 if (FREEIMAGE_WITH_LIBPNG)
-    include(${CMAKE_SOURCE_DIR}/cmake/dependency.png.cmake)
+    include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/dependency.png.cmake)
 endif()
 
 option(FREEIMAGE_WITH_LIBTIFF "Compile with the LibTIFF backend" ON)
 if (FREEIMAGE_WITH_LIBTIFF)
-    include(${CMAKE_SOURCE_DIR}/cmake/dependency.tiff.cmake)
+    include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/dependency.tiff.cmake)
 endif()
 
 option(FREEIMAGE_WITH_LIBWEBP "Compile with the LibWEBP backend" ON)
 if (FREEIMAGE_WITH_LIBWEBP)
-    include(${CMAKE_SOURCE_DIR}/cmake/dependency.webp.cmake)
+    include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/dependency.webp.cmake)
 endif()
 
 option(FREEIMAGE_WITH_LIBRAW "Compile with the LibRAW backend" ON)
 if (FREEIMAGE_WITH_LIBRAW)
-    include(${CMAKE_SOURCE_DIR}/cmake/dependency.raw.cmake)
+    include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/dependency.raw.cmake)
 endif()
 
 option(FREEIMAGE_WITH_LIBHEIF "Compile with the LibHEIF backend" ON)
 if (FREEIMAGE_WITH_LIBHEIF)
-    include(${CMAKE_SOURCE_DIR}/cmake/dependency.heif.cmake)
+    include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/dependency.heif.cmake)
 endif()
 
 option(FREEIMAGE_WITH_PYTHON_BINDINGS "Build pythin bindings" OFF)
 if (FREEIMAGE_WITH_PYTHON_BINDINGS)
     find_package(Python3 COMPONENTS Development REQUIRED)
-    include(${CMAKE_SOURCE_DIR}/cmake/dependency.pybind.cmake)
+    include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/dependency.pybind.cmake)
 endif()
 
 # Internal dependencies
 option(FREEIMAGE_WITH_LIBJXR "Compile with the LibJXR backend" ON)
 if (FREEIMAGE_WITH_LIBJXR)
-    add_subdirectory(${CMAKE_SOURCE_DIR}/3rdParty/LibJXR ${CMAKE_BINARY_DIR}/LibJXR)
+    add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/3rdParty/LibJXR ${CMAKE_BINARY_DIR}/LibJXR)
 endif()
 
-set(FREEIMAGE_INCLUDE_DIR ${CMAKE_SOURCE_DIR}/Source)
+set(FREEIMAGE_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/Source)
 
 add_definitions("-DFREEIMAGERE_MAJOR_VERSION=${FREEIMAGERE_MAJOR_VERSION}")
 add_definitions("-DFREEIMAGERE_MINOR_VERSION=${FREEIMAGERE_MINOR_VERSION}")