新建一个工作空间，执行catkin_make的时候，提示**The C compiler identification is unknown**，接下来就发生错误，编译失败，错误是**CMake Error at /usr/share/cmake-3.5/Modules/CMakeTestCCompiler.cmake:61 (message):The C compiler "/usr/bin/cc" is not able to compile a simple test program.**, 完整的编译输出如下：
Base path: /home/inky/t Source space: /home/inky/t/src Build space: /home/inky/t/build Devel space: /home/inky/t/devel Install space: /home/inky/t/install #### #### Running command: "cmake /home/inky/t/src -DCATKIN_DEVEL_PREFIX=/home/inky/t/devel -DCMAKE_INSTALL_PREFIX=/home/inky/t/install -G Unix Makefiles" in "/home/inky/t/build" #### -- The C compiler identification is unknown -- The CXX compiler identification is GNU 5.4.0 -- Check for working C compiler: /usr/bin/cc -- Check for working C compiler: /usr/bin/cc -- broken CMake Error at /usr/share/cmake-3.5/Modules/CMakeTestCCompiler.cmake:61 (message): The C compiler "/usr/bin/cc" is not able to compile a simple test program. It fails with the following output: Change Dir: /home/inky/t/build/CMakeFiles/CMakeTmp Run Build Command:"/usr/bin/make" "cmTC_6a4d8/fast" /usr/bin/make -f CMakeFiles/cmTC_6a4d8.dir/build.make CMakeFiles/cmTC_6a4d8.dir/build make[1]: Entering directory '/home/inky/t/build/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_6a4d8.dir/testCCompiler.c.o /usr/bin/cc -o CMakeFiles/cmTC_6a4d8.dir/testCCompiler.c.o -c /home/inky/t/build/CMakeFiles/CMakeTmp/testCCompiler.c CMakeFiles/cmTC_6a4d8.dir/build.make:65: recipe for target 'CMakeFiles/cmTC_6a4d8.dir/testCCompiler.c.o' failed make[1]: *** [CMakeFiles/cmTC_6a4d8.dir/testCCompiler.c.o] Error 1 make[1]: Leaving directory '/home/inky/t/build/CMakeFiles/CMakeTmp' Makefile:126: recipe for target 'cmTC_6a4d8/fast' failed make: *** [cmTC_6a4d8/fast] Error 2 CMake will not be able to correctly generate this project. Call Stack (most recent call first): CMakeLists.txt -- Configuring incomplete, errors occurred! See also "/home/inky/t/build/CMakeFiles/CMakeOutput.log". See also "/home/inky/t/build/CMakeFiles/CMakeError.log". Invoking "cmake" failed
请问有谁能看出这是什么问题吗？
我试过更新和重装gcc，更新和重装make和cmake，但是都没有效果，我在其他地方克隆来的一个项目却能够正常编译，这个问题困扰我有几天了。
刚刚遇到了和你一样的问题，最后把工作空间删除了，在home路经下重新建了个空间就解决了