cmake: Use job pool feature to limit concurrent jobs

Add two new options, MONERO_PARALLEL_COMPILE_JOBS and
MONERO_PARALLEL_LINK_JOBS to try and prevent running out of memory when
building everything.

Requires >= cmake 3.0.0, and the use of the Ninja generator.

Useful links:

* https://cmake.org/cmake/help/latest/prop_gbl/JOB_POOLS.html
* https://reviews.llvm.org/D6304
This commit is contained in:
Matt Smith 2020-08-05 18:39:44 +01:00
parent 9414194b1e
commit 12a78e5e74
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@ -55,6 +55,20 @@ else()
message(STATUS "ccache deselected")
endif()
if (${CMAKE_VERSION} VERSION_GREATER "3.0.0" AND CMAKE_MAKE_PROGRAM MATCHES "ninja")
set(MONERO_PARALLEL_COMPILE_JOBS "" CACHE STRING "The maximum number of concurrent compilation jobs.")
if (MONERO_PARALLEL_COMPILE_JOBS)
set_property(GLOBAL APPEND PROPERTY JOB_POOLS compile_job_pool=${MONERO_PARALLEL_COMPILE_JOBS})
set(CMAKE_JOB_POOL_COMPILE compile_job_pool)
endif ()
set(MONERO_PARALLEL_LINK_JOBS "" CACHE STRING "The maximum number of concurrent link jobs.")
if (MONERO_PARALLEL_LINK_JOBS)
set_property(GLOBAL APPEND PROPERTY JOB_POOLS link_job_pool=${MONERO_PARALLEL_LINK_JOBS})
set(CMAKE_JOB_POOL_LINK link_job_pool)
endif ()
endif()
enable_language(C ASM)
function (die msg)