v1.5.6
Disable linker flag detection on MSVC/ClangCL.
fix cmakebuild test
[cmake] Emit warnings for contradictory build settings
fix cmake recipe
[CI] Run tests with CMake on Windows
fixed VS2017Community build script
cmake refactor: move HP-UX specific logic into its own function
Add target_include_directories because windows and macos need it for me
Define the unified target inside the CMake project, and export it.