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reduce amount of parallel linker jobs further

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Nikita Taranov 2024-07-12 17:13:33 +01:00
parent 851db16e30
commit 8d07c522f1
1 changed files with 5 additions and 0 deletions
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5
cmake/limit_jobs.cmake
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@ -44,8 +44,13 @@ endif ()
# - and I've verfied that lld-11 does not use all available CPU time (in peak) while linking one binary # - and I've verfied that lld-11 does not use all available CPU time (in peak) while linking one binary
if (CMAKE_BUILD_TYPE_UC STREQUAL "RELWITHDEBINFO" AND ENABLE_THINLTO) if (CMAKE_BUILD_TYPE_UC STREQUAL "RELWITHDEBINFO" AND ENABLE_THINLTO)
if (ARCH_AARCH64) if (ARCH_AARCH64)
# aarch64 builds start to often fail with OOMs (reason not yet clear), for now let's limit the concurrency
message(STATUS "ThinLTO provides its own parallel linking - limiting parallel link jobs to 1.") message(STATUS "ThinLTO provides its own parallel linking - limiting parallel link jobs to 1.")
set (PARALLEL_LINK_JOBS 1) set (PARALLEL_LINK_JOBS 1)
if (LINKER_NAME MATCHES "lld")
math(EXPR LTO_JOBS ${NUMBER_OF_LOGICAL_CORES}/4)
set (CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO "${CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO} -Wl,--thinlto-jobs=${LTO_JOBS}")
endif()
elseif (PARALLEL_LINK_JOBS GREATER 2) elseif (PARALLEL_LINK_JOBS GREATER 2)
message(STATUS "ThinLTO provides its own parallel linking - limiting parallel link jobs to 2.") message(STATUS "ThinLTO provides its own parallel linking - limiting parallel link jobs to 2.")
set (PARALLEL_LINK_JOBS 2) set (PARALLEL_LINK_JOBS 2)