The proper way to support a language in CMake is outlined in
`Modules/CMakeAddNewLanguage.txt`:
This file provides a few notes to CMake developers about how to add
support for a new language to CMake. It is also possible to place
these files in CMAKE_MODULE_PATH within an outside project to add
languages not supported by upstream CMake. However, this is not
a fully supported use case.
The implementation behind the scenes of project/enable_language,
including the compiler/platform modules, is an *internal* API that
does not make any compatibility guarantees. It is not covered in the
official reference documentation that is versioned with the source code.
Maintainers of external language support are responsible for porting
it to each version of CMake as upstream changes are made. Since
the API is internal we will not necessarily include notice of any
changes in release notes.
CMakeDetermine(LANG)Compiler.cmake -> this should find the compiler for LANG
and configure CMake(LANG)Compiler.cmake.in
CMake(LANG)Compiler.cmake.in -> used by CMakeDetermine(LANG)Compiler.cmake
This file is used to store compiler information and is copied down into try
compile directories so that try compiles do not need to re-determine and
test the LANG
CMakeTest(LANG)Compiler.cmake -> test the compiler and set:
SET(CMAKE_(LANG)_COMPILER_WORKS 1 CACHE INTERNAL "")
CMake(LANG)Information.cmake -> set up rule variables for LANG :
CMAKE_(LANG)_CREATE_SHARED_LIBRARY
CMAKE_(LANG)_CREATE_SHARED_MODULE
CMAKE_(LANG)_CREATE_STATIC_LIBRARY
CMAKE_(LANG)_COMPILE_OBJECT
CMAKE_(LANG)_LINK_EXECUTABLE
I've been playing around with it, but so far I haven't been able to get
a test case off the ground. I have no idea how to actually make this
format string expand for example, or where to find documentation.
set(CMAKE_Java_COMPILE_OBJECT
"<CMAKE_Java_COMPILER> <FLAGS> <SOURCE> -d <OBJECT_DIR>")
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