cmake_minimum_required(VERSION 2.8.12) project(TryCompileInner C) try_compile(SHOULD_PASS ${TryCompileInner_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp ${TryCompileInner_SOURCE_DIR}/../pass.c OUTPUT_VARIABLE TRY_OUT ) if(NOT SHOULD_PASS) message(FATAL_ERROR "Inner try-compile SHOULD_PASS failed!") endif() add_library(innerlib innerlib.c) add_executable(innerexe innerexe.c) target_link_libraries(innerexe innerlib)