CMake Error at src/osgEarthDrivers/CMakeLists.txt:7 (PROJECT): The CMAKE_C_COMPILER: llvm-gcc-4.2 is not a full path and was not found in the PATH.
由于我是要为Windows平台上的osgEarth编译包,所以把OSG_BUILD_PLATGORM_IPHONE这一项置为OFF。