gcc - Errors while compiling with CMake -

i'm trying compile git project , i'm facing problems cmake. initially, doesn't found c++ compiler , prompted error:

cmake .. 

no cmake_cxx_compiler found.

tell cmake find compiler setting either environment variable "cxx" or cmake cache entry cmake_cxx_compiler full path compiler, or compiler name if in path.

so, did:

cxx="gcc" cmake .. 

but error prompted:

-- cxx compiler identification unknown
-- check working cxx compiler: /usr/bin/gcc
-- check working cxx compiler: /usr/bin/gcc -- broken
cmake error @ /usr/share/cmake-3.0/modules/cmaketestcxxcompiler.cmake:54 (message):
c++ compiler "/usr/bin/gcc" not able compile simple test program.

how can solve error , compile project?

you try use c compiler gcc c++ one, wrong.

you need install g++ or other c++ compiler.