It builds - as seen in the attached pstree - using all 12 cpu - at my tinderbox.
Created attachment 522356 [details] 30.20180304-070301 pstree
It's on my TODO. I suppose it should be easier now that most of the ebuilds override lit options.
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=8fabadb5c4c66c5fea35bc9605d8e2e5e3a0d400 commit 8fabadb5c4c66c5fea35bc9605d8e2e5e3a0d400 Author: Michał Górny <mgorny@gentoo.org> AuthorDate: 2018-03-08 22:04:15 +0000 Commit: Michał Górny <mgorny@gentoo.org> CommitDate: 2018-03-08 22:18:57 +0000 sys-libs/libomp: Control lit job count Closes: https://bugs.gentoo.org/649554 sys-libs/libomp/libomp-6.0.9999.ebuild | 4 ++-- sys-libs/libomp/libomp-9999.ebuild | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=a52e0c5fb8201c23ce814fbf20bc4e7a7d35316f commit a52e0c5fb8201c23ce814fbf20bc4e7a7d35316f Author: Michał Górny <mgorny@gentoo.org> AuthorDate: 2018-03-08 22:03:56 +0000 Commit: Michał Górny <mgorny@gentoo.org> CommitDate: 2018-03-08 22:18:57 +0000 sys-libs/libcxx: Control lit job count Closes: https://bugs.gentoo.org/649554 sys-libs/libcxx/libcxx-6.0.9999.ebuild | 5 +++-- sys-libs/libcxx/libcxx-9999.ebuild | 5 +++-- 2 files changed, 6 insertions(+), 4 deletions(-) https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=0d37c6f56f69dbcb6bdf0893eedf71583c1a660f commit 0d37c6f56f69dbcb6bdf0893eedf71583c1a660f Author: Michał Górny <mgorny@gentoo.org> AuthorDate: 2018-03-08 22:03:31 +0000 Commit: Michał Górny <mgorny@gentoo.org> CommitDate: 2018-03-08 22:18:56 +0000 sys-libs/libcxxabi: Control lit job count Closes: https://bugs.gentoo.org/649554 sys-libs/libcxxabi/libcxxabi-6.0.9999.ebuild | 4 ++-- sys-libs/libcxxabi/libcxxabi-9999.ebuild | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=f1e1fca21dafbdda7ec207c51aae469f21c497ef commit f1e1fca21dafbdda7ec207c51aae469f21c497ef Author: Michał Górny <mgorny@gentoo.org> AuthorDate: 2018-03-08 22:03:16 +0000 Commit: Michał Górny <mgorny@gentoo.org> CommitDate: 2018-03-08 22:18:56 +0000 sys-libs/llvm-libunwind: Control lit job count Closes: https://bugs.gentoo.org/649554 sys-libs/llvm-libunwind/llvm-libunwind-6.0.9999.ebuild | 4 ++-- sys-libs/llvm-libunwind/llvm-libunwind-9999.ebuild | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=a6f6d9d196cce8d9a7e34df988bba1cacfb9c20e commit a6f6d9d196cce8d9a7e34df988bba1cacfb9c20e Author: Michał Górny <mgorny@gentoo.org> AuthorDate: 2018-03-08 22:03:00 +0000 Commit: Michał Górny <mgorny@gentoo.org> CommitDate: 2018-03-08 22:18:55 +0000 sys-libs/compiler-rt-sanitizers: Control lit job count Closes: https://bugs.gentoo.org/649554 .../compiler-rt-sanitizers/compiler-rt-sanitizers-6.0.9999.ebuild | 5 +++-- sys-libs/compiler-rt-sanitizers/compiler-rt-sanitizers-9999.ebuild | 5 +++-- 2 files changed, 6 insertions(+), 4 deletions(-) https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=fe261b0f446e77a494ef1ec42b444cbef967c77e commit fe261b0f446e77a494ef1ec42b444cbef967c77e Author: Michał Górny <mgorny@gentoo.org> AuthorDate: 2018-03-08 22:02:39 +0000 Commit: Michał Górny <mgorny@gentoo.org> CommitDate: 2018-03-08 22:18:55 +0000 sys-libs/compiler-rt: Control lit job count Closes: https://bugs.gentoo.org/649554 sys-libs/compiler-rt/compiler-rt-6.0.9999.ebuild | 5 +++-- sys-libs/compiler-rt/compiler-rt-9999.ebuild | 5 +++-- 2 files changed, 6 insertions(+), 4 deletions(-) https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=c8a4003ddfe67ee28d62f82bad4f97d7ab2a803e commit c8a4003ddfe67ee28d62f82bad4f97d7ab2a803e Author: Michał Górny <mgorny@gentoo.org> AuthorDate: 2018-03-08 22:02:09 +0000 Commit: Michał Górny <mgorny@gentoo.org> CommitDate: 2018-03-08 22:18:55 +0000 dev-util/lldb: Control lit job count Closes: https://bugs.gentoo.org/649554 dev-util/lldb/lldb-6.0.9999.ebuild | 5 +++-- dev-util/lldb/lldb-9999.ebuild | 5 +++-- 2 files changed, 6 insertions(+), 4 deletions(-) https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=ac86f623016f2232dc6b645ee70c747b05e2a1cf commit ac86f623016f2232dc6b645ee70c747b05e2a1cf Author: Michał Górny <mgorny@gentoo.org> AuthorDate: 2018-03-08 22:00:46 +0000 Commit: Michał Górny <mgorny@gentoo.org> CommitDate: 2018-03-08 22:18:54 +0000 sys-devel/clang: Control lit job count Closes: https://bugs.gentoo.org/649554 sys-devel/clang/clang-6.0.9999.ebuild | 5 +++-- sys-devel/clang/clang-9999.ebuild | 5 +++-- 2 files changed, 6 insertions(+), 4 deletions(-) https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=d9462da2d9120bb030bbe5ab7ace39c486c76e21 commit d9462da2d9120bb030bbe5ab7ace39c486c76e21 Author: Michał Górny <mgorny@gentoo.org> AuthorDate: 2018-03-08 22:00:16 +0000 Commit: Michał Górny <mgorny@gentoo.org> CommitDate: 2018-03-08 22:18:54 +0000 sys-devel/lld: Control lit job count Closes: https://bugs.gentoo.org/649554 sys-devel/lld/lld-6.0.9999.ebuild | 4 ++-- sys-devel/lld/lld-9999.ebuild | 6 +++--- 2 files changed, 5 insertions(+), 5 deletions(-) https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=612b4fa3ec6076369e2cc87ba5dad1f89e773486 commit 612b4fa3ec6076369e2cc87ba5dad1f89e773486 Author: Michał Górny <mgorny@gentoo.org> AuthorDate: 2018-03-08 21:59:46 +0000 Commit: Michał Górny <mgorny@gentoo.org> CommitDate: 2018-03-08 22:18:53 +0000 dev-ml/llvm-ocaml: Control lit job count Closes: https://bugs.gentoo.org/649554 dev-ml/llvm-ocaml/llvm-ocaml-6.0.9999.ebuild | 4 ++-- dev-ml/llvm-ocaml/llvm-ocaml-9999.ebuild | 6 +++--- 2 files changed, 5 insertions(+), 5 deletions(-) https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=6f92382169da4cd3942b866af9191ffa309afc96 commit 6f92382169da4cd3942b866af9191ffa309afc96 Author: Michał Górny <mgorny@gentoo.org> AuthorDate: 2018-03-08 21:58:35 +0000 Commit: Michał Górny <mgorny@gentoo.org> CommitDate: 2018-03-08 22:18:53 +0000 sys-devel/llvm: Control lit job count Closes: https://bugs.gentoo.org/649554 sys-devel/llvm/llvm-6.0.9999.ebuild | 4 ++-- sys-devel/llvm/llvm-9999.ebuild | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=25bd6378d4a39b05c085c91de2abbdfbb721b42e commit 25bd6378d4a39b05c085c91de2abbdfbb721b42e Author: Michał Górny <mgorny@gentoo.org> AuthorDate: 2018-03-08 21:57:28 +0000 Commit: Michał Górny <mgorny@gentoo.org> CommitDate: 2018-03-08 22:18:52 +0000 dev-python/lit: Control lit job count Closes: https://bugs.gentoo.org/649554 dev-python/lit/lit-6.0.9999.ebuild | 5 +++-- dev-python/lit/lit-9999.ebuild | 7 ++++--- 2 files changed, 7 insertions(+), 5 deletions(-)