Merge pull request #357 from goldhoorn/fix_libusb_find_script

Corrected handling of DEPENDS_DIR and extended description of it

Author: floe

examples/protonect/CMakeLists.txt

@@ -4,7 +4,7 @@ PROJECT(libfreenect2)
 SET(CMAKE_BUILD_TYPE RelWithDebInfo)
 
 SET(MY_DIR ${libfreenect2_SOURCE_DIR})
-SET(DEPENDS_DIR "${MY_DIR}/../../depends" CACHE STRING "dependency directory")
+SET(DEPENDS_DIR "${MY_DIR}/../../depends" CACHE STRING "dependency directory must be set to 'false' if external deps are used")
 
 OPTION(ENABLE_CXX11 "Enable C++11 support" OFF)
 OPTION(ENABLE_OPENCL "Enable OpenCL support" ON)

examples/protonect/cmake_modules/FindLibUSB.cmake

@@ -8,7 +8,7 @@
 #  LibUSB_LIBRARIES:  the libraries
 
 IF(PKG_CONFIG_FOUND)
-  IF(${DEPENDS_DIR}) #Otherwise use System pkg-config path
+  IF(DEPENDS_DIR) #Otherwise use System pkg-config path
     SET(ENV{PKG_CONFIG_PATH} "${DEPENDS_DIR}/libusb/lib/pkgconfig")
   ENDIF()
   IF(LibUSB_FIND_REQUIRED)