Let CMake find OpenGL/GLUT automatically

Signed-off-by: Benn Snyder <benn.snyder@gmail.com>

examples/CMakeLists.txt

@@ -13,13 +13,11 @@ install(TARGETS freenect-camtest freenect-wavrecord
 # All viewers need pthreads and GLUT.
 set(THREADS_USE_PTHREADS_WIN32 true)
 find_package(Threads)
-include_directories(${THREADS_PTHREADS_INCLUDE_DIR})
-
 find_package(OpenGL)
 find_package(GLUT)
 
 if (Threads_FOUND AND OPENGL_FOUND AND GLUT_FOUND)
-  include_directories(${OPENGL_INCLUDE_DIR} ${GLUT_INCLUDE_DIR})
+  include_directories(${THREADS_PTHREADS_INCLUDE_DIR} ${OPENGL_INCLUDE_DIR} ${GLUT_INCLUDE_DIR})
 
   add_executable(freenect-glview glview.c)
   add_executable(freenect-regview regview.c)
@@ -41,7 +39,7 @@ endif ()
 if (BUILD_C_SYNC)
   find_package(Threads REQUIRED)
   include_directories(../wrappers/c_sync/)
-  include_directories(${OPENGL_INCLUDE_DIR} ${GLUT_INCLUDE_DIR})
+  include_directories(${THREADS_PTHREADS_INCLUDE_DIR} ${OPENGL_INCLUDE_DIR} ${GLUT_INCLUDE_DIR})
 
   add_executable(freenect-regtest regtest.c)
   add_executable(freenect-tiltdemo tiltdemo.c)

wrappers/cpp/CMakeLists.txt

@@ -1,40 +1,20 @@
-INSTALL(FILES libfreenect.hpp
-  DESTINATION ${PROJECT_INCLUDE_INSTALL_DIR})
+install(FILES libfreenect.hpp
+        DESTINATION ${PROJECT_INCLUDE_INSTALL_DIR})
 
-IF(BUILD_EXAMPLES)
-
-if (WIN32)
+if (BUILD_EXAMPLES)
   set(THREADS_USE_PTHREADS_WIN32 true)
   find_package(Threads REQUIRED)
-
-  include_directories(${THREADS_PTHREADS_INCLUDE_DIR})
-endif()
-
-include_directories(.)
-
-add_executable(freenect-cppview cppview.cpp)
-add_executable(freenect-cpp_pcview cpp_pc_view.cpp)
-
-# Mac just has everything already
-if(APPLE)
-  set(CMAKE_EXE_LINKER_FLAGS "-framework OpenGL -framework GLUT")
-  target_link_libraries(freenect-cppview freenect)
-  target_link_libraries(freenect-cpp_pcview freenect)
-else()
-  find_package(Threads REQUIRED)
   find_package(OpenGL REQUIRED)
   find_package(GLUT REQUIRED)
 
-  include_directories(${OPENGL_INCLUDE_DIR} ${GLUT_INCLUDE_DIR} ${USB_INCLUDE_DIRS})
-
-  target_link_libraries(freenect-cppview freenect ${OPENGL_LIBRARIES} ${GLUT_LIBRARY} ${CMAKE_THREAD_LIBS_INIT} ${MATH_LIB})
-  target_link_libraries(freenect-cpp_pcview freenect ${OPENGL_LIBRARIES} ${GLUT_LIBRARY} ${CMAKE_THREAD_LIBS_INIT})
-endif()
+  include_directories(. ${THREADS_PTHREADS_INCLUDE_DIR} ${OPENGL_INCLUDE_DIR} ${GLUT_INCLUDE_DIR})
 
-install (TARGETS freenect-cppview
-  DESTINATION bin)
+  add_executable(freenect-cppview cppview.cpp)
+  add_executable(freenect-cpp_pcview cpp_pc_view.cpp)
 
-install (TARGETS freenect-cpp_pcview
-  DESTINATION bin)
+  target_link_libraries(freenect-cppview freenect ${OPENGL_LIBRARIES} ${GLUT_LIBRARY} ${CMAKE_THREAD_LIBS_INIT} ${MATH_LIB})
+  target_link_libraries(freenect-cpp_pcview freenect ${OPENGL_LIBRARIES} ${GLUT_LIBRARY} ${CMAKE_THREAD_LIBS_INIT} ${MATH_LIB})
 
+  install(TARGETS freenect-cppview freenect-cpp_pcview
+          DESTINATION bin)
 ENDIF()