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macOS ccache #134

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merged 2 commits into from
Jan 20, 2021
Merged

macOS ccache #134

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49bfb4f
Enable ccache on mac.
alexreinking Jan 20, 2021
e60738e
Document ccache configuration.
alexreinking Jan 20, 2021
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17 changes: 17 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -84,6 +84,23 @@ Finally, start the master!
$ buildbot start master
```

# Worker configuration

## Worker dependencies

(TODO: flesh this out)

The macOS and Linux buildbots expect to have ccache installed. It is available through homebrew or APT. After
installing, one should run the following commands:

```console
$ ccache --set-config=sloppiness=pch_defines,time_macros
$ ccache -M 100G # or smaller, depending on disk size
```

The first command allows CCache to work in the presence of precompiled headers. The second sets the cache size to
something very large (100GB in this case).

## Starting a worker

The master recognizes workers by their reported names, eg. `linux-worker-4` or `win-worker-1`. To launch the buildbot
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17 changes: 8 additions & 9 deletions master/master.cfg
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Expand Up @@ -18,7 +18,7 @@ from buildbot.process.properties import Interpolate, Property, renderer, Transfo
from buildbot.reporters.generators.build import BuildStartEndStatusGenerator
from buildbot.reporters.github import GitHubStatusPush
from buildbot.reporters.message import MessageFormatterRenderable
from buildbot.schedulers.basic import SingleBranchScheduler, AnyBranchScheduler
from buildbot.schedulers.basic import AnyBranchScheduler
from buildbot.schedulers.forcesched import ForceScheduler
from buildbot.schedulers.timed import Nightly
from buildbot.steps.cmake import CMake
Expand Down Expand Up @@ -208,13 +208,16 @@ class BuilderType:
def handles_wasm(self):
return (self.arch == 'x86'
and self.bits == 64
and (self.os == 'linux' or self.os == 'osx')
and self.os in ['osx', 'linux']
and self.llvm_branch == LLVM_TRUNK_BRANCH)

def has_nvidia(self):
return (self.arch == 'x86'
and self.bits == 64
and (self.os == 'linux' or self.os == 'windows'))
and self.os in ['windows', 'linux'])

def has_ccache(self):
return self.os in ['osx', 'linux']

def halide_target(self):
return '%s-%d-%s' % (self.arch, self.bits, self.os)
Expand Down Expand Up @@ -463,9 +466,7 @@ def get_halide_cmake_definitions(builder_type, halide_target='host'):
'WITH_PYTHON_BINDINGS': 'ON' if builder_type.handles_python() else 'OFF'
}

# The linux and arm linux buildbots have ccache installed
# (TODO: can install on mac if we update XCode there)
if builder_type.os == 'linux':
if builder_type.has_ccache():
cmake_definitions['CMAKE_C_COMPILER_LAUNCHER'] = 'ccache'
cmake_definitions['CMAKE_CXX_COMPILER_LAUNCHER'] = 'ccache'

Expand Down Expand Up @@ -559,9 +560,7 @@ def add_env_setup_step(factory, builder_type):
cxx = 'cl.exe'
cc = 'cl.exe'

# The linux and arm linux buildbots have ccache installed
# (TODO: can install on mac if we update XCode there)
if builder_type.os == 'linux':
if builder_type.has_ccache():
cxx = 'ccache ' + cxx
cc = 'ccache ' + cc

Expand Down