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| author | Nathan Sidwell <nathan@acm.org> | 2023-04-19 16:08:25 -0400 |
|---|---|---|
| committer | Nathan Sidwell <nathan@acm.org> | 2023-04-20 14:41:32 -0400 |
| commit | 06b8057cc285cd7567ed7aaf57875227b3ec53da (patch) | |
| tree | 04fa2c7b1cfbf0ee74bcf2bf134a1fe9b346b553 /bolt | |
| parent | 01910787d386584ea5a3d5dc317a908423ba39ed (diff) | |
| download | llvm-06b8057cc285cd7567ed7aaf57875227b3ec53da.tar.gz | |
[BOLT] Make BOLT_ENABLE_RUNTIME user-configurable
Defaults to ON for x86_64 && (Linux | Darwin).
If enabled, checks that /proc/self/map_files is readable. Some systems are configured so that getdents fails with EPERM.
Reviewed By: rafauler
Differential Revision: https://reviews.llvm.org/D148742
Diffstat (limited to 'bolt')
| -rw-r--r-- | bolt/CMakeLists.txt | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/bolt/CMakeLists.txt b/bolt/CMakeLists.txt index 650cac8094dc..01ed186510c8 100644 --- a/bolt/CMakeLists.txt +++ b/bolt/CMakeLists.txt @@ -4,10 +4,23 @@ set(BOLT_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}) set(BOLT_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}) set(CMAKE_CXX_STANDARD 17) -set(BOLT_ENABLE_RUNTIME OFF) +set(BOLT_ENABLE_RUNTIME_default OFF) if (CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64" + AND (CMAKE_SYSTEM_NAME STREQUAL "Linux" + OR CMAKE_SYSTEM_NAME STREQUAL "Darwin") AND "X86" IN_LIST LLVM_TARGETS_TO_BUILD) - set(BOLT_ENABLE_RUNTIME ON) + set(BOLT_ENABLE_RUNTIME_default ON) +endif() +option(BOLT_ENABLE_RUNTIME "Enable BOLT runtime" ${BOLT_ENABLE_RUNTIME_default}) +if (BOLT_ENABLE_RUNTIME) + # Some systems prevent reading /proc/self/map_files + execute_process(COMMAND ls /proc/self/map_files + RESULT_VARIABLE LS OUTPUT_QUIET ERROR_QUIET) + if (LS) + set(BOLT_ENABLE_RUNTIME OFF) + message(WARNING + "BOLT runtime is disabled as /proc/self/map_files is unreadable.") + endif() endif() set(BOLT_CLANG_EXE "" CACHE FILEPATH "Path to clang executable for the target \ |