| cmake_policy(SET CMP0067 NEW) |
| enable_language(CXX) |
| |
| # Add our own -std= flag to the try_compile check. |
| set(CMAKE_REQUIRED_FLAGS -std=c++11) |
| |
| # Tell CMP0128 NEW behavior to append a -std= flag (after ours). |
| if(CMAKE_CXX_EXTENSIONS_DEFAULT) |
| set(CMAKE_CXX_EXTENSIONS OFF) |
| else() |
| set(CMAKE_CXX_EXTENSIONS ON) |
| endif() |
| |
| include(CheckSourceCompiles) |
| check_source_compiles(CXX " |
| ${check_cxx_std} |
| int main() |
| { |
| return 0; |
| } |
| " SRC_COMPILED) |
| if(NOT SRC_COMPILED) |
| message("Check failed to compile:") |
| set(configure_log "${CMAKE_BINARY_DIR}/CMakeFiles/CMakeConfigureLog.yaml") |
| if(EXISTS "${configure_log}") |
| file(READ "${configure_log}" log_content) |
| else() |
| set(log_content "") |
| endif() |
| if(log_content MATCHES [[( - |
| kind: "try_compile-v1"( |
| + [^ |
| ]+)+ |
| checks: |
| - "Performing Test SRC_COMPILED"( |
| + [^ |
| ]+)+)]]) |
| message("${configure_log} contains:\n${CMAKE_MATCH_1}") |
| endif() |
| endif() |
