If you have source files outside of the project directory and compile them with c_compile() or cxx_compile(), the objects will be created in the same directory as their source files.
The implementations use the relocate_files() built-in to create the object filenames in the build tree from the source files in the project tree. Since it uses the project directory as the base, but the source files are outside of the parent directory, the output filenames will not be "relocated" to the build directory.
To fix this, we must pass the parent argument to relocate_files(), but that also means that the user must pass a parent_dir argument to c_compile() and cpp_compile().
NiklasRosenstein
commented
7 years ago
If you have source files outside of the project directory and compile them with
c_compile()orcxx_compile(), the objects will be created in the same directory as their source files.The implementations use the
relocate_files()built-in to create the object filenames in the build tree from the source files in the project tree. Since it uses the project directory as the base, but the source files are outside of the parent directory, the output filenames will not be "relocated" to the build directory.To fix this, we must pass the
parentargument torelocate_files(), but that also means that the user must pass aparent_dirargument toc_compile()andcpp_compile().