cmake_error_on_xcode

1，

CMake Error at CMakeLists.txt:44 (project):
  No CMAKE_C_COMPILER could be found.

CMake Error at CMakeLists.txt:44 (project):
  No CMAKE_CXX_COMPILER could be found.

B000000045613:liuhanwork liuhan01$ xcrun -find c++
/Library/Developer/CommandLineTools/usr/bin/c++
B000000045613:liuhanwork liuhan01$ xcrun -find cc
/Library/Developer/CommandLineTools/usr/bin/cc

2，自己重装了xcode,修改原来默认路径

xcode-select: error: tool ‘xcodebuild‘ requires Xcode, but active developer
  directory ‘/Library/Developer/CommandLineTools‘ is a command line tools
  instance
B000000045613:Developer liuhan01$ lsApplications    Makefiles    Toolchains    usrLibrary        Platforms    ToolsB000000045613:Developer liuhan01$ pwd/Applications/Xcode.app/Contents/Developer
B000000045613:bin liuhan01$ xcode-select -p
/Library/Developer/CommandLineTools
B000000045613:Applications liuhan01$ sudo xcode-select --switch /Applications/Xcode.app/Contents/Developer
Password:
B000000045613:Applications liuhan01$
B000000045613:Applications liuhan01$ xcode-select -p
/Applications/Xcode.app/Contents/Developer