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[CMake] Support passing arguments to build tool (bootstrap). 

For bootstrap builds (CLANG_ENABLE_BOOTSTRAP=ON) allow
arguments to be passed to the native tool used in CMake
for the stage2 step.

Can be used to pass extra arguments for enhanced versions
of build tools, e.g. distributed build options.

Reviewed By: phosek

Differential Revision: https://reviews.llvm.org/D131665
This commit is contained in:
Carlos Alberto Enciso 2022-08-23 05:45:25 +01:00
parent b88aba9d7d
commit 6c6c4f6a9b
1 changed files with 11 additions and 0 deletions
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11
clang/CMakeLists.txt
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@ -787,6 +787,14 @@ if (CLANG_ENABLE_BOOTSTRAP)
endif()
endforeach()
# Build arguments for native tool used in CMake.
set(build_configuration "$<CONFIG>")
set(build_tool_args "${LLVM_EXTERNAL_PROJECT_BUILD_TOOL_ARGS}")
if(NOT build_tool_args STREQUAL "")
string(PREPEND build_tool_args "-- ")
separate_arguments(build_tool_args UNIX_COMMAND "${build_tool_args}")
endif()
ExternalProject_Add(${NEXT_CLANG_STAGE}
DEPENDS clang-bootstrap-deps
PREFIX ${NEXT_CLANG_STAGE}
@ -809,6 +817,9 @@ if (CLANG_ENABLE_BOOTSTRAP)
${${CLANG_STAGE}_RANLIB}
${${CLANG_STAGE}_OBJCOPY}
${${CLANG_STAGE}_STRIP}
BUILD_COMMAND ${CMAKE_COMMAND} --build ${BINARY_DIR}
--config ${build_configuration}
${build_tool_args}
INSTALL_COMMAND ""
STEP_TARGETS configure build
USES_TERMINAL_CONFIGURE 1