I do not see the purpose of the command line flag --std... I use CMake to determine the C++ standard, c++11, gnu++11, c++14, gnu++14, etc. Yet, cmake-js seems to just append a standard... regardless of whether cmake has discovered one. Example

add_library(${PROJECT_NAME} SHARED ${SOURCES})
set_target_properties(${PROJECT_NAME} PROPERTIES CXX_STANDARD 14 CXX_STANDARD_REQUIRED ON)

Will result in -std=gnu++14 on Linux, yet cmake-js will put -std=c++11 by default in CMAKE_CXX_FLAGS... and even if you pass --std gnu++14 it duplicates it on the command line.

Can there be an option to not do this and let CMake handle it?