CMake/Help/variable/CMAKE_LANG_COMPILER_EXTERNAL_TOOLCHAIN.rst
Stephen Kelly 5096967ecd Allow toolchain files to specify an external toolchain.
Clang can compile code, but uses the gcc tools for other tasks such
as linking. The -gcc-toolchain option can be used for that, but
generalize so that other compilers can be treated the same.

If such a location is specified, use it as a hint for finding
the binutils executables.
2013-11-19 12:39:34 -05:00

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CMAKE_<LANG>_COMPILER_EXTERNAL_TOOLCHAIN
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The external toolchain for cross-compiling, if supported.
Some compiler toolchains do not ship their own auxilliary utilities such as
archivers and linkers. The compiler driver may support a command-line argument
to specify the location of such tools. CMAKE_<LANG>_COMPILER_EXTERNAL_TOOLCHAIN
may be set to a path to a path to the external toolchain and will be passed
to the compiler driver if supported.
This variable may only be set in a toolchain file specified by
the ``CMAKE_TOOLCHAIN_FILE`` variable.