b55f7512a7
Extract Flang's runtime library to use the LLVM_ENABLE_RUNTIME mechanism. It will only become active when `LLVM_ENABLE_RUNTIMES=flang-rt` is used, which also changes the `FLANG_INCLUDE_RUNTIME` to `OFF` so the old runtime build rules do not conflict. This also means that unless `LLVM_ENABLE_RUNTIMES=flang-rt` is passed, nothing changes with the current build process. Motivation: * Consistency with LLVM's other runtime libraries (compiler-rt, libc, libcxx, openmp offload, ...) * Allows compiling the runtime for multiple targets at once using the LLVM_RUNTIME_TARGETS configuration options * Installs the runtime into the compiler's per-target resource directory so it can be automatically found even when cross-compiling Also see RFC discussion at https://discourse.llvm.org/t/rfc-use-llvm-enable-runtimes-for-flangs-runtime/80826
50 lines
2.1 KiB
CMake
50 lines
2.1 KiB
CMake
# Discover the projects that use CMake in the subdirectories.
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# Note that explicit cmake invocation is required every time a new project is
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# added or removed.
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file(GLOB entries *)
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foreach(entry ${entries})
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if(IS_DIRECTORY ${entry} AND EXISTS ${entry}/CMakeLists.txt)
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if((NOT ${entry} STREQUAL ${CMAKE_CURRENT_SOURCE_DIR}/compiler-rt) AND
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(NOT ${entry} STREQUAL ${CMAKE_CURRENT_SOURCE_DIR}/dragonegg) AND
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(NOT ${entry} STREQUAL ${CMAKE_CURRENT_SOURCE_DIR}/libcxx) AND
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(NOT ${entry} STREQUAL ${CMAKE_CURRENT_SOURCE_DIR}/libcxxabi) AND
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(NOT ${entry} STREQUAL ${CMAKE_CURRENT_SOURCE_DIR}/libunwind) AND
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(NOT ${entry} STREQUAL ${CMAKE_CURRENT_SOURCE_DIR}/test-suite) AND
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(NOT ${entry} STREQUAL ${CMAKE_CURRENT_SOURCE_DIR}/openmp) AND
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(NOT ${entry} STREQUAL ${CMAKE_CURRENT_SOURCE_DIR}/cross-project-tests) AND
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(NOT ${entry} STREQUAL ${CMAKE_CURRENT_SOURCE_DIR}/flang-rt))
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get_filename_component(entry_name "${entry}" NAME)
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add_llvm_external_project(${entry_name})
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endif()
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endif()
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endforeach(entry)
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# Also add in libc++ and compiler-rt trees if present (and we have
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# a sufficiently recent version of CMake where required).
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if(${LLVM_BUILD_RUNTIME})
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# MSVC isn't quite working with libc++ yet, disable it until issues are
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# fixed.
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# FIXME: LLVM_FORCE_BUILD_RUNTIME is currently used by libc++ to force
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# enable the in-tree build when targeting clang-cl.
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if(NOT MSVC OR LLVM_FORCE_BUILD_RUNTIME)
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# Add the projects in reverse order of their dependencies so that the
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# dependent projects can see the target names of their dependencies.
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add_llvm_external_project(libunwind)
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add_llvm_external_project(pstl)
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add_llvm_external_project(libc)
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add_llvm_external_project(libcxxabi)
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add_llvm_external_project(libcxx)
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endif()
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if(NOT LLVM_BUILD_EXTERNAL_COMPILER_RT)
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add_llvm_external_project(compiler-rt)
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endif()
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add_llvm_external_project(flang-rt)
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endif()
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add_llvm_external_project(dragonegg)
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add_llvm_external_project(openmp)
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if(LLVM_INCLUDE_TESTS)
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add_llvm_external_project(cross-project-tests)
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endif()
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