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[cmake] forward LLVM_EXTERNAL_*_SOURCE_DIR to runtimes (#180399)

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Allow runtime source directories to live outside the top-level tree by
honoring LLVM_EXTERNAL_*_SOURCE_DIR and propagating the values via
RUNTIMES_CMAKE_ARGS.
This commit is contained in:
Wenju He 2026-02-24 18:29:55 +08:00 committed by GitHub
parent cfaa67bb62
commit e4245f2fc5
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GPG Key ID: B5690EEEBB952194
2 changed files with 16 additions and 11 deletions
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17
llvm/runtimes/CMakeLists.txt
View File

@ -5,15 +5,18 @@
set(COMMON_CMAKE_ARGS "-DHAVE_LLVM_LIT=ON;-DCLANG_RESOURCE_DIR=${CLANG_RESOURCE_DIR}") set(COMMON_CMAKE_ARGS "-DHAVE_LLVM_LIT=ON;-DCLANG_RESOURCE_DIR=${CLANG_RESOURCE_DIR}")
foreach(proj ${LLVM_ENABLE_RUNTIMES}) foreach(proj ${LLVM_ENABLE_RUNTIMES})
set(proj_dir "${CMAKE_CURRENT_SOURCE_DIR}/../../${proj}")
if(IS_DIRECTORY ${proj_dir} AND EXISTS ${proj_dir}/CMakeLists.txt)
list(APPEND runtimes ${proj_dir})
else()
message(FATAL_ERROR "LLVM_ENABLE_RUNTIMES requests ${proj} but directory not found: ${proj_dir}")
endif()
string(TOUPPER "${proj}" canon_name) string(TOUPPER "${proj}" canon_name)
STRING(REGEX REPLACE "-" "_" canon_name ${canon_name}) STRING(REGEX REPLACE "-" "_" canon_name ${canon_name})
set(LLVM_EXTERNAL_${canon_name}_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../../${proj}") if(NOT LLVM_EXTERNAL_${canon_name}_SOURCE_DIR)
set(LLVM_EXTERNAL_${canon_name}_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../../${proj}")
endif()
set(proj_dir "${LLVM_EXTERNAL_${canon_name}_SOURCE_DIR}")
if(NOT IS_DIRECTORY ${proj_dir} OR NOT EXISTS ${proj_dir}/CMakeLists.txt)
message(FATAL_ERROR "LLVM_ENABLE_RUNTIMES requests ${proj} but directory not found: ${proj_dir}")
endif()
list(APPEND runtimes ${proj_dir})
list(APPEND RUNTIMES_CMAKE_ARGS
"-DLLVM_EXTERNAL_${canon_name}_SOURCE_DIR=${LLVM_EXTERNAL_${canon_name}_SOURCE_DIR}")
endforeach() endforeach()
function(get_compiler_rt_path path) function(get_compiler_rt_path path)

10
runtimes/CMakeLists.txt
View File

@ -46,15 +46,17 @@ endif()
include(SortSubset) include(SortSubset)
sort_subset("${LLVM_SUPPORTED_RUNTIMES}" "${LLVM_ENABLE_RUNTIMES}" LLVM_ENABLE_RUNTIMES) sort_subset("${LLVM_SUPPORTED_RUNTIMES}" "${LLVM_ENABLE_RUNTIMES}" LLVM_ENABLE_RUNTIMES)
foreach(proj ${LLVM_ENABLE_RUNTIMES}) foreach(proj ${LLVM_ENABLE_RUNTIMES})
set(proj_dir "${CMAKE_CURRENT_SOURCE_DIR}/../${proj}") string(TOUPPER "${proj}" canon_name)
STRING(REGEX REPLACE "-" "_" canon_name ${canon_name})
if(NOT LLVM_EXTERNAL_${canon_name}_SOURCE_DIR)
set(LLVM_EXTERNAL_${canon_name}_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../${proj}")
endif()
set(proj_dir "${LLVM_EXTERNAL_${canon_name}_SOURCE_DIR}")
if(IS_DIRECTORY ${proj_dir} AND EXISTS ${proj_dir}/CMakeLists.txt) if(IS_DIRECTORY ${proj_dir} AND EXISTS ${proj_dir}/CMakeLists.txt)
list(APPEND runtimes ${proj_dir}) list(APPEND runtimes ${proj_dir})
else() else()
message(FATAL_ERROR "LLVM_ENABLE_RUNTIMES requests ${proj} but directory not found: ${proj_dir}") message(FATAL_ERROR "LLVM_ENABLE_RUNTIMES requests ${proj} but directory not found: ${proj_dir}")
endif() endif()
string(TOUPPER "${proj}" canon_name)
STRING(REGEX REPLACE "-" "_" canon_name ${canon_name})
set(LLVM_EXTERNAL_${canon_name}_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../${proj}")
endforeach() endforeach()
function(runtime_register_component name) function(runtime_register_component name)