CMake не видит компилятора

Поставил CMake (без CLang), добавил в переменную path путь к cmake-3.9.2/bin.

cmake -version 

работает.

Есть CMakeLists.txt файл

#cmake
cmake_minimum_required(VERSION 3.5)
project(concentration)
option(set_clang "set clang as default compiler" 0)
option(set_gpp "set g++ as default compiler" 0)
option(cros_compile "cros compile for win32" 0)
if(${UNIX})
    message(STATUS "Unix system")
elseif(${WIN32})
    message(WARNING "Work is not guaranted")
else()
    message(FATAL_ERROR "System not supported")
endif()
if(set_gpp)
    set(CMAKE_CXX_COMPILER g++)
endif()
if(set_clang)
    set(CMAKE_CXX_COMPILER clang++)
endif()
if(cros_compile)
    set(PROJECT_NAME ${PROJECT_NAME}.exe)
    set(CMAKE_CXX_COMPILER i686-w64-mingw32-g++-posix)
    set(CMAKE_CXX_FLAGS "-static-libstdc++ -static-libgcc")
endif()
message(STATUS "Project " ${PROJECT_NAME})
message(STATUS "cxx compiler " ${CMAKE_CXX_COMPILER})
add_definitions(-Wall -std=c++14)
include_directories(include)
set(MAIN_SRC sources/main.cpp)
file(GLOB CONCENTRATION_SRC "sources/concentration/*.cpp")
if(cros_compile)
    find_package(PDCurses REQUIRED)
else()
    find_package(Curses REQUIRED)
endif()
include_directories(${CURSES_INCLUDE_DIR})
add_executable(${PROJECT_NAME} ${MAIN_SRC} ${CONCENTRATION_SRC})
target_link_libraries(${PROJECT_NAME} ${CURSES_LIBRARIES})

в общем когда запускаю командами

cmake
cmake -Dset_gpp=1 

CMake пишет:

-- The C compiler identification is unknown
-- The CXX compiler identification is unknown
CMake Error at CMakeLists.txt:5 (project):
  The CMAKE_C_COMPILER:
    cl
  is not a full path and was not found in the PATH.
  To use the NMake generator with Visual C++, cmake must be run from a shell
  that can use the compiler cl from the command line.  This environment is
  unable to invoke the cl compiler.  To fix this problem, run cmake from the
  Visual Studio Command Prompt (vcvarsall.bat).
  Tell CMake where to find the compiler by setting either the environment
  variable "CC" or the CMake cache entry CMAKE_C_COMPILER to the full path to
  the compiler, or to the compiler name if it is in the PATH.

CMake Error at CMakeLists.txt:5 (project):
  The CMAKE_CXX_COMPILER:
    cl
  is not a full path and was not found in the PATH.
  To use the NMake generator with Visual C++, cmake must be run from a shell
  that can use the compiler cl from the command line.  This environment is
  unable to invoke the cl compiler.  To fix this problem, run cmake from the
  Visual Studio Command Prompt (vcvarsall.bat).
  Tell CMake where to find the compiler by setting either the environment
  variable "CXX" or the CMake cache entry CMAKE_CXX_COMPILER to the full path
  to the compiler, or to the compiler name if it is in the PATH.

-- Configuring incomplete, errors occurred!
See also "../CMakeFiles/CMakeOutput.log".
See also "../CMakeFiles/CMakeError.log".

Путь к компилятору есть в path. g++ команда работает. Постоянно компилирую с командной строки. Пробовал в CmakeLists.txt указывать явный путь к g++. Все равно не помогает. Все пути к файлам - латиница.

В общем, нужна помощь!