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The build system is fragile by allowing multiple invocation of subprocess builds in the native folder for Make generator. For example, during sub-invocation of the native llvm-config, llvm-min-tblgen is also built. If there is another sub-invocation of the native llvm-min-tblgen build running in parallel, they may overwrite each other's build results, and may lead to errors like "Text file busy". This patch adds a cmake script that uses file lock to serialize all native builds for Make generator.
10 lines
389 B
CMake
10 lines
389 B
CMake
# CMake script that synchronizes process execution on a given file lock.
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#
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# Input variables:
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# LOCK_FILE_PATH - The file to be locked for the scope of the process of this cmake script.
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# COMMAND - The command to be executed.
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file(LOCK ${LOCK_FILE_PATH})
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string(REPLACE "@" ";" command_args ${COMMAND})
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execute_process(COMMAND ${command_args} COMMAND_ERROR_IS_FATAL ANY)
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