Pull request https://github.com/openembedded/openembedded-core/commit/ccd1142d22b31ed85d8823b1bc9e11ccfd72b61f?diff=unified#r27676626 has introduced two new functions which deal with parallelism: parallel_make and parallel_make_argument. The implementation of parallel_make_argument is broken when a limit is passed to the function. The boost recipe (https://github.com/openembedded/openembedded-core/blob/ccd1142d22b31ed85d8823b1bc9e11ccfd72b61f/meta/recipes-support/boost/boost.inc) uses the new function in this way: BOOST_PARALLEL_MAKE = "${@oe.utils.parallel_make_argument(d, '-j%d', limit=64)}" with limit=64 to safeguard a bug which is present in bjam. In our builds we have set PARALLEL_MAKE=16, so we expect bjam to run with -j16 but instead it will be always running with -j64. This because the implementation of parallel_make_argument is not correct.
Patch already on the list, will be in master soon.
Ross, thanks for the update!
I see this has been fixed by https://github.com/openembedded/openembedded-core/commit/45205be547967c84dff96403c3a6825a62e3ca6a I tried a build and it is working as expected setting PARALLEL_MAKE=16 bjam -j16 -d+2 -q --ignore-site-config -sTOOLS=gcc -sGCC=arm-oe-linux-gnueabi-gcc... I'll close the ticket as resolved/fixed. Thanks