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[CMake] Support passing arguments to build tool for external projects 

Add CMake variable LLVM_EXTERNAL_PROJECT_BUILD_TOOL_ARGS to allow
arguments to be passed to the native tool used in CMake --build
invocations for external projects.

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

Differential Revision: https://reviews.llvm.org/D115815
This commit is contained in:
Andrew Ng 2021-12-14 14:34:44 +00:00
parent ba927f66c0
commit d4d9de362b
2 changed files with 11 additions and 1 deletions
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4
llvm/CMakeLists.txt
View File

@ -176,6 +176,10 @@ if(LLVM_CCACHE_BUILD)
endif()
endif()
set(LLVM_EXTERNAL_PROJECT_BUILD_TOOL_ARGS "" CACHE STRING
"Optional arguments for the native tool used in CMake --build invocations for external projects.")
mark_as_advanced(LLVM_EXTERNAL_PROJECT_BUILD_TOOL_ARGS)
option(LLVM_DEPENDENCY_DEBUGGING "Dependency debugging mode to verify correctly expressed library dependencies (Darwin only)" OFF)
# Some features of the LLVM build may be disallowed when dependency debugging is

8
llvm/cmake/modules/LLVMExternalProjectUtils.cmake
View File

@ -11,8 +11,14 @@ function(llvm_ExternalProject_BuildCmd out_var target bin_dir)
# Use special command for Makefiles to support parallelism.
set(${out_var} "$(MAKE)" "-C" "${bin_dir}" "${target}" PARENT_SCOPE)
else()
set(tool_args "${LLVM_EXTERNAL_PROJECT_BUILD_TOOL_ARGS}")
if(NOT tool_args STREQUAL "")
string(CONFIGURE "${tool_args}" tool_args @ONLY)
string(PREPEND tool_args "-- ")
separate_arguments(tool_args UNIX_COMMAND "${tool_args}")
endif()
set(${out_var} ${CMAKE_COMMAND} --build ${bin_dir} --target ${target}
--config ${ARG_CONFIGURATION} PARENT_SCOPE)
--config ${ARG_CONFIGURATION} ${tool_args} PARENT_SCOPE)
endif()
endfunction()