CMake Error: your CXX compiler: "" was not found

[root@amax src]# cmake .
-- The CXX compiler identification is unknown
CMake Error at /usr/local/share/cmake-2.6/Modules/CMakeCXXInformation.cmake:17 (GET_FILENAME_COMPONENT):
  get_filename_component called with incorrect number of arguments
Call Stack (most recent call first):
  CMakeLists.txt:1 (PROJECT)
CMake Error: your CXX compiler: "" was not found.   Please set CMAKE_CXX_COMPILER to a valid compiler path or name.
-- Configuring done

删除之前生前的CMakeCache.txt，重新cmake .

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