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| author |  Ilya Biryukov <ibiryukov@google.com> | 2018-09-04 03:09:52 -0700 |
|---|---|---|
| committer |  TensorFlower Gardener <gardener@tensorflow.org> | 2018-09-04 03:15:01 -0700 |
| commit | 1c3d02eb3594e9d92cd26562e797142ee34505b2 (patch) | |
| tree | 72fe9f6b489c76f4db86699f37209f57938f6eb2 /tools | |
| parent | d45cd10714906326ab1e27a82260a8dc56028671 (diff) | |
Use LLD when building with downloaded GPU toolchain
This improves build times when using the downloaded clang toolchain.
Additionally, remove '-B/usr/bin' flags from the cuda CROSSTOOL when using
the downloaded toolchain.
It was forcing 'clang' to first search for the linker in '/usr/bin',
preventing downloaded LLD from being selected.
PiperOrigin-RevId: 211430374
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/bazel.rc | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/tools/bazel.rc b/tools/bazel.rc index 660e3d3280..601e07ffdd 100644 --- a/tools/bazel.rc +++ b/tools/bazel.rc @@ -33,6 +33,11 @@ build:mkl_open_source_only --define=using_mkl_dnn_only=true build:download_clang --crosstool_top=@local_config_download_clang//:toolchain build:download_clang --define=using_clang=true +# Instruct clang to use LLD for linking. +# This only works with GPU builds currently, since Bazel sets -B/usr/bin in +# auto-generated CPU crosstool, forcing /usr/bin/ld.lld to be preferred over +# the downloaded one. +build:download_clang_use_lld --linkopt='-fuse-ld=lld' build:cuda --crosstool_top=@local_config_cuda//crosstool:toolchain build:cuda --define=using_cuda=true --define=using_cuda_nvcc=true |