Tutorials do not link against libjpeg and libpng by default if these libraries are installed. This way our release builds do not risk to depend on these unimportant libraries.

Author: svenwoop

tutorials/common/image/CMakeLists.txt

@@ -19,7 +19,7 @@ IF (EMBREE_TUTORIALS_OPENIMAGEIO)
 ENDIF (EMBREE_TUTORIALS_OPENIMAGEIO)
 
 FIND_PACKAGE(JPEG)
-CMAKE_DEPENDENT_OPTION(EMBREE_TUTORIALS_LIBJPEG "Enables JPEG image codec." ON "EMBREE_TUTORIALS AND JPEG_FOUND" OFF)
+CMAKE_DEPENDENT_OPTION(EMBREE_TUTORIALS_LIBJPEG "Enables JPEG image codec." OFF "EMBREE_TUTORIALS AND JPEG_FOUND" OFF)
 IF (EMBREE_TUTORIALS_LIBJPEG)
   ADD_DEFINITIONS(-DEMBREE_TUTORIALS_LIBJPEG)
   INCLUDE_DIRECTORIES(${JPEG_INCLUDE_DIR})
@@ -28,7 +28,7 @@ IF (EMBREE_TUTORIALS_LIBJPEG)
 ENDIF (EMBREE_TUTORIALS_LIBJPEG)
 
 FIND_PACKAGE(PNG)
-CMAKE_DEPENDENT_OPTION(EMBREE_TUTORIALS_LIBPNG "Enables PNG image codecs." ON "EMBREE_TUTORIALS AND PNG_FOUND" OFF)
+CMAKE_DEPENDENT_OPTION(EMBREE_TUTORIALS_LIBPNG "Enables PNG image codecs." OFF "EMBREE_TUTORIALS AND PNG_FOUND" OFF)
 IF (EMBREE_TUTORIALS_LIBPNG)
   ADD_DEFINITIONS(-DEMBREE_TUTORIALS_LIBPNG)
   INCLUDE_DIRECTORIES(${PNG_INCLUDE_DIR})