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This CL aslo enables a presubmit check for correct formatting of all bzl files in //third_party/bazel.
PiperOrigin-RevId: 198857055
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Repository functions restart whenever they have to resolve a label due
to the way Skyframe currently works. This is problematic because such
functions are often costly: they try to detect features of the host
system by building and running tools, and they touch the file system.
To minimize the cost of these restarts, which are unavoidable, resolve
the paths to all necessary labels upfront. This way, while the restarts
still happen, they have no side-effects and thus are cheap. As a
side-effect of this work, remove the strange and undocumented "tpl"
function, which only made things more cryptic and harder to refactor.
This cuts down Bazel's own analysis time on macOS on my Mac Pro 2013
from 14 seconds to 6 seconds by trimming about 15 unnecessary rebuilds
and executions of the xcode-locator-bin tool to just 1. In other
words: one fewer awkward pause during analysis time.
Additionally, there is the hope that this will fix the problems users
observe where Bazel writes persistent garbage during autoconfiguration
(needing "clean --expunge" to recover) when Visual Studio Code is
running and Santa is enabled on macOS; see
https://github.com/bazelbuild/bazel/issues/4603. This is most likely
a bug in Santa (see https://github.com/google/santa/issues/260) but
we were tickling it due to our apparently-abusive behavior of building,
executing, and then removing the same thing over and over again.
Fixes https://github.com/bazelbuild/bazel/issues/5196 and should also
fix https://github.com/bazelbuild/bazel/issues/4603.
RELNOTES: None.
PiperOrigin-RevId: 198434395
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Ping #3977
RELNOTES: None
PiperOrigin-RevId: 194240625
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compiled as part of bazel's repository bootstrap. This should make crosstool's clang invocations faster. An added benefit of this is that wrapped_clang.cc supports the "DSYM_HINT" flags specified through the CROSSTOOL, so with this change, apple_binary gets support for the --apple_generate_dsym flag.
The dSYM generation issue has been flagged multiple times:
https://github.com/bazelbuild/bazel/issues/4312
https://github.com/bazelbuild/bazel/issues/3940
https://github.com/bazelbuild/bazel/issues/3372
RELNOTES: apple_binary can now generate dSYM outputs with the --apple_generate_dsym=true flag.
PiperOrigin-RevId: 184688215
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This commit adds a few extension points to cc_configure script with
the ultimate goal to allow downloading the compiler and other tools
used for C++ build before generating the crosstool.
Specifically, we make the following changes:
- Expose the implementation of a cc_autoconf repository rule under a
name of cc_autoconf_impl.
- Extend cc_autoconf_impl to allow overriding paths to build
tools (i.e. compilers, linkers, etc.)
- Allow to put any extra artifacts into the generated crosstool
repository. All files inside 'extra_tools' folder are added into
compiler_files, all_files and linker_files properties of the
generated crosstool, so that they are available for the crosstool.
With these extension one can do the following to download the
compilers used for the build and configure the crosstool:
- Create a repository_rule for the toolchain with a custom
implementation.
- In the implementation function of the repository rule:
+ Download the compilers and put them into `extra_tools` folder.
+ Run cc_autoconf_impl with overriden_tools set to relative paths
of the compiler and other build tools in the extra_tools folder.
Change-Id: I51af6b504578963b3e97bcdd1ccb6d0a5fed1c3e
PiperOrigin-RevId: 179675911
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Split original cc_configure.bzl into 4 different files:
lib_cc_configure.bzl: base library for C++ toolchain configuration
unix_cc_configure.bzl: For Unix platforms
osx_cc_configure.bzl: For macOS
windows_cc_configure.bzl: For Windows
Change-Id: I76fa44294c6ca4304f0a94f3a1c57d6e76141667
PiperOrigin-RevId: 159801973
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vladmos
jmmv
hlopko
kaipi
Ilya Biryukov
Yun Peng