fd6bb9f6a5
Implement a new build system using Buck[1], Facebook's
open source clone of Google's internal build system.
Pros:
- Concise build language
- Test and build output is concise
- Test failures and stack traces show on terminal
- Reliable incrementals; clean is unnecessary
- Extensible with simple blocks of Python
- Fast
buck: clean: 0.452s, full 1m21.083s [*], no-op: 7.145s,
mvn: clean: 4.596s, full 2m53.776s, no-op: 59.108s,
[*] full build includes downloading all dependencies,
time can vary due to remote server performance.
Cons:
- No Windows support
- No native Maven Central support (added by macros)
- No native GWT, Prolog, or WAR support (added by macros)
- Bootstrap of buck requires Ant
Getting started:
git clone https://gerrit.googlesource.com/buck
cd buck
ant
Mac OS X:
PATH="`pwd`/bin:/System/Library/Frameworks/JavaVM.framework/Versions/Current/Commands:$PATH"
Linux:
PATH="`pwd`/bin:$PATH"
Importing into Eclipse:
$ time buck build :eclipse
0m48.949s
Import existing project from `pwd`
Import 'gerrit' (do not import other Maven based projects)
Expand 'gerrit'
Right click 'buck-out' > Properties
Under Attributes check 'Derived'
If the code doesn't currently compile but an updated classpath
is needed, refresh the configs and obtain missing JARs:
$ buck build :eclipse_project :download
Running JUnit tests:
$ time buck test --all -e slow # skip slow tests
0m19.320s
$ time buck test --all # includes acceptance tests
5m17.517s
Building WAR:
$ buck build :gerrit
$ java -jar buck-out/gen/gerrit.war
Building release:
$ buck test --all && buck build :api :release
$ java -jar buck-out/gen/release.war
$ ls -lh buck-out/gen/{extension,plugin}-api.jar
Downloading dependencies:
Dependencies are normally downloaded automatically, but Buck can
inspect its graph and download missing dependencies so future
compiles can run without the network:
$ buck build :download
[1] http://facebook.github.io/buck/
Change-Id: I40853b108bd8e153cefa0896a5280a9a5ff81655
119 lines
3.1 KiB
Python
Executable File
119 lines
3.1 KiB
Python
Executable File
#!/usr/bin/python
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# Copyright (C) 2013 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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# TODO(sop): Remove hack after Buck supports Eclipse
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from os import path, link
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import re
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from subprocess import Popen, PIPE
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from sys import argv
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from xml.dom import minidom
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OUT = argv[1] if len(argv) >= 2 else None
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ROOT = path.dirname(path.dirname(path.abspath(__file__)))
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MAIN = ['//:eclipse_classpath']
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GWT = ['//gerrit-gwtui:ui_module']
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JRE = '/'.join([
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'org.eclipse.jdt.launching.JRE_CONTAINER',
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'org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType',
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'JavaSE-1.6',
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])
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def query_classpath(targets):
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deps = []
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p = Popen(['buck', 'audit', 'classpath'] + targets, stdout = PIPE)
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for line in p.stdout:
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deps.append(line.strip())
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s = p.wait()
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if s != 0:
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exit(s)
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return deps
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def make_classpath():
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impl = minidom.getDOMImplementation()
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return impl.createDocument(None, 'classpath', None)
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doc = make_classpath()
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src = set()
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lib = set()
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gwt_src = set()
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gwt_lib = set()
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def classpathentry(kind, path, src = None):
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e = doc.createElement('classpathentry')
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e.setAttribute('kind', kind)
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e.setAttribute('path', path)
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if src:
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e.setAttribute('sourcepath', src)
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doc.documentElement.appendChild(e)
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java_library = re.compile(r'[^/]+/gen/(.*)/lib__[^/]+__output/[^/]+[.]jar$')
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for p in query_classpath(MAIN):
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if p.endswith('-src.jar'):
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# gwt_module() depends on -src.jar for Java to JavaScript compiles.
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gwt_lib.add(p)
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continue
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if p.startswith('buck-out/gen/lib/gwt/'):
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# gwt_module() depends on huge shaded GWT JARs that import
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# incorrect versions of classes for Gerrit. Collect into
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# a private grouping for later use.
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gwt_lib.add(p)
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continue
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m = java_library.match(p)
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if m:
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src.add(m.group(1))
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else:
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lib.add(p)
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for p in query_classpath(GWT):
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m = java_library.match(p)
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if m:
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gwt_src.add(m.group(1))
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for s in sorted(src):
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p = path.join(s, 'java')
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if path.exists(p):
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classpathentry('src', p)
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continue
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for env in ['main', 'test']:
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for type in ['java', 'resources']:
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p = path.join(s, 'src', env, type)
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if path.exists(p):
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classpathentry('src', p)
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for libs in [lib, gwt_lib]:
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for j in sorted(libs):
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s = None
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if j.endswith('.jar'):
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s = j[:-4] + '-src.jar'
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if not path.exists(s):
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s = None
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classpathentry('lib', j, s)
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for s in sorted(gwt_src):
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classpathentry('lib', path.join(ROOT, s, 'src', 'main', 'java'))
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classpathentry('con', JRE)
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classpathentry('output', 'buck-out/classes')
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p = path.join(ROOT, '.classpath')
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with open(p, 'w') as fd:
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doc.writexml(fd, addindent = ' ', newl = '\n', encoding='UTF-8')
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if OUT:
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link(p, OUT)
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