cmake_minimum_required(VERSION 3.1) project(TestPython2 C) include(CTest) find_package(Python2 3 QUIET) if (Python2_FOUND) message (FATAL_ERROR "Wrong python version found: ${Python2_VERSION}") endif() find_package(Python2 REQUIRED COMPONENTS Interpreter Development) if (NOT Python2_FOUND) message (FATAL_ERROR "Fail to found Python 2") endif() Python2_add_library (spam2 MODULE ../spam.c) target_compile_definitions (spam2 PRIVATE PYTHON2) add_test (NAME python2_spam2 COMMAND "${CMAKE_COMMAND}" -E env "PYTHONPATH=$" "${Python2_EXECUTABLE}" -c "import spam2; spam2.system(\"cd\")")