CMake Error:
The detected version of Ninja () is less than the version of Ninja required
by CMake (1.3).
CMake Error: CMAKE_C_COMPILER not set, after EnableLanguage
CMake Error: CMAKE_CXX_COMPILER not set, after EnableLanguage
解决方法：
主要原因是ninja没有正确安装。
可以自己编译，也可以直接用二进制文件。
新建一个cmake 工程
CMakeCache.txt 文件中有一行：
CMAKE_MAKE_PROGRAM:FILEPATH=/usr/bin/ninja
将jinja文件拷贝到/usr/bin/文件目录下。
编译输出：
Building in: /home/q/eclipse-workspace/bb/build/default
cmake -G Ninja -DCMAKE_BUILD_TYPE=Release -DCMAKE_EXPORT_COMPILE_COMMANDS=ON /home/q/eclipse-workspace/bb
-- The C compiler identification is GNU 5.4.0
-- The CXX compiler identification is GNU 5.4.0
-- Check for working C compiler using: Ninja
-- Check for working C compiler using: Ninja -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler using: Ninja
-- Check for working CXX compiler using: Ninja -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Configuring done
-- Generating done
-- Build files have been written to: /home/q/eclipse-workspace/bb/build/default
cmake --build . -- -v
[1/2] /usr/bin/c++ -O3 -DNDEBUG -MMD -MT CMakeFiles/bb.dir/bb.cpp.o -MF CMakeFiles/bb.dir/bb.cpp.o.d -o CMakeFiles/bb.dir/bb.cpp.o -c ../../bb.cpp
[2/2] : && /usr/bin/c++ -O3 -DNDEBUG CMakeFiles/bb.dir/bb.cpp.o -o bb -rdynamic && :
Build complete (0 errors, 0 warnings): /home/q/eclipse-workspace/bb/build/default