diff options
| author | V3n3RiX <venerix@redcorelinux.org> | 2017-10-09 18:53:29 +0100 |
|---|---|---|
| committer | V3n3RiX <venerix@redcorelinux.org> | 2017-10-09 18:53:29 +0100 |
| commit | 4f2d7949f03e1c198bc888f2d05f421d35c57e21 (patch) | |
| tree | ba5f07bf3f9d22d82e54a462313f5d244036c768 /metadata/news/2016-10-25-llvm_3_9_with_llvm_targets/2016-10-25-llvm_3_9_with_llvm_targets.en.txt | |
reinit the tree, so we can have metadata
Diffstat (limited to 'metadata/news/2016-10-25-llvm_3_9_with_llvm_targets/2016-10-25-llvm_3_9_with_llvm_targets.en.txt')
| -rw-r--r-- | metadata/news/2016-10-25-llvm_3_9_with_llvm_targets/2016-10-25-llvm_3_9_with_llvm_targets.en.txt | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/metadata/news/2016-10-25-llvm_3_9_with_llvm_targets/2016-10-25-llvm_3_9_with_llvm_targets.en.txt b/metadata/news/2016-10-25-llvm_3_9_with_llvm_targets/2016-10-25-llvm_3_9_with_llvm_targets.en.txt new file mode 100644 index 000000000000..d5656db56539 --- /dev/null +++ b/metadata/news/2016-10-25-llvm_3_9_with_llvm_targets/2016-10-25-llvm_3_9_with_llvm_targets.en.txt @@ -0,0 +1,41 @@ +Title: LLVM 3.9 with LLVM_TARGETS +Author: Michał Górny <mgorny@gentoo.org> +Content-Type: text/plain +Posted: 2016-10-25 +Revision: 1 +News-Item-Format: 1.0 +Display-If-Installed: <sys-devel/llvm-3.9 + +The newest release of LLVM 3.9 has undergone major Gentoo changes, +and may require explicit action prior to the upgrade. In this release, +the semi-implicit target choice has been replaced with an explicit +LLVM_TARGETS flag set. + +If you did not enable USE=multitarget, no action should be required. +The targets for your host CPU, Berkeley Packet Filter (used by some +packages) and possibly two major GPUs (AMDGPU and NVPTX) will be enabled +by default which is a superset of the previous default. However, you may +want to disable some of those targets if you do not intend to install +packages requiring them (dev-util/bcc, media-libs/mesa). + +If you enabled USE=multitarget, you will now need to specify all +the requested targets explicitly. The old flag will be preserved +for some time for compatibility reasons; however, it will only enforce +explicitly selecting all targets. + +In order to enable all targets, add the following to your +/etc/portage/package.use or equivalent file: + + sys-devel/llvm LLVM_TARGETS: * + sys-devel/clang LLVM_TARGETS: * + +If you had to use USE=multitarget to enable some of the targets you +needed, you can now disable the flag and specify those targets +explicitly. + +Please also note that starting with LLVM-4.0, sys-devel/clang will be +built as a separate package and the enabled LLVM_TARGETS for that +package will actually enforce requested targets. + +Setting LLVM_TARGETS globally is discouraged as it can cause bootstrap +issues with sys-libs/compiler-rt in the future. |