README
¶
Please 
Please is a cross-language build system with an emphasis on high performance, extensibility and reproduceability. It supports a number of popular languages and can automate nearly any aspect of your build process.
See http://please.build for more information.
Currently Linux (tested on Ubuntu) and OSX are actively supported, and FreeBSD is known to work with a little setup (see FAQ for details).
Getting Started
The easiest way to install it on your own machine is to run:
curl -s https://get.please.build | bash
Then you simply run plz init at the root of your project to set up
a default config and you're good to start adding BUILD files.
See the website for more instructions about
how to write them.
Building Please
To build Please yourself, run ./bootstrap.sh in the repo root.
This will set up the minimal environment needed to build Please,
build it once manually and then rebuild it again using itself.
You'll need to have Go 1.9+ installed to build Please although once
built it can target Go 1.4+.
To build some of the parser engine backends, you will need to have Python libraries available; at least python 2 needs to be installed for now and, if available, alternatives will be built for python3 and PyPy. python3 also needs to be installed to build one or two of the builtin tools.
You will also need to have Java 7 or above installed to build some
of the Java helper programs. Optional dependencies for various tests
include unittest++ (sudo apt-get install libunittest++-dev), clang,
gold and docker - none of those are required to build components so
their tests will be excluded if they aren't available.
If you'd rather not worry about installing the dependencies, we provide
a prebuilt Docker image based on Ubuntu which is capable of building
the whole thing for you:
docker run -it thoughtmachine/please
Contributors
The core contributors so far are:
Progress has been slightly hindered by our fearless leader Paul who continually insists that we should "get on with our work" and "stop messing around with the build system". But he's not actually fired us for spending time on this which he has our thanks for.
Directories
¶
| Path | Synopsis |
|---|---|
|
build
Package build houses the core functionality for actually building targets.
|
Package build houses the core functionality for actually building targets. |
|
cli
Package cli contains helper functions related to flag parsing and logging.
|
Package cli contains helper functions related to flag parsing and logging. |
|
export
Package export handles exporting parts of the repo to other directories.
|
Package export handles exporting parts of the repo to other directories. |
|
follow
Package follow implements remote communication between plz instances.
|
Package follow implements remote communication between plz instances. |
|
help
Package help prints help messages about parts of plz.
|
Package help prints help messages about parts of plz. |
|
help/config
Package main implements a parser for our config structure that emits help topics based on its struct tags.
|
Package main implements a parser for our config structure that emits help topics based on its struct tags. |
|
parse
Package parse implements parsing of the BUILD files via an embedded Python interpreter.
|
Package parse implements parsing of the BUILD files via an embedded Python interpreter. |
|
parse/asp
Package asp implements an experimental BUILD-language parser.
|
Package asp implements an experimental BUILD-language parser. |
|
parse/asp/main
Package main implements a compiler for the builtin build rules, which is used at bootstrap time.
|
Package main implements a compiler for the builtin build rules, which is used at bootstrap time. |
|
query
Package query implements a simple query language for Please.
|
Package query implements a simple query language for Please. |
|
run
Package run implements the "plz run" command.
|
Package run implements the "plz run" command. |
|
tool
Package tool implements running Please's sub-tools (via "plz tool jarcat" etc).
|
Package tool implements running Please's sub-tools (via "plz tool jarcat" etc). |
|
utils
Package utils contains various utility functions and whatnot.
|
Package utils contains various utility functions and whatnot. |
|
test
|
|
|
go_rules/asm
Package asm implements a simple test of Go assembly.
|
Package asm implements a simple test of Go assembly. |
|
go_rules/asm_binary
Package asm implements a simple binary using Go assembly.
|
Package asm implements a simple binary using Go assembly. |
|
go_rules/importpath
Package importpath is used to implement a test on Go import paths.
|
Package importpath is used to implement a test on Go import paths. |
|
third_party
|
|
|
go/zip
Package zip provides support for reading and writing ZIP archives.
|
Package zip provides support for reading and writing ZIP archives. |
|
tools
|
|
|
cache/cluster
Package cluster contains functions for dealing with a cluster of plz cache nodes.
|
Package cluster contains functions for dealing with a cluster of plz cache nodes. |
|
cache/server
Package server contains core functionality for our cache servers; storing & retrieving files etc.
|
Package server contains core functionality for our cache servers; storing & retrieving files etc. |
|
jarcat
Package main implements jarcat, a program to efficiently concatenate .zip files.
|
Package main implements jarcat, a program to efficiently concatenate .zip files. |
|
jarcat/tar
Package tar implements a tarball writer for Please.
|
Package tar implements a tarball writer for Please. |
|
jarcat/zip
Package zip implements functions for jarcat that manipulate .zip files.
|
Package zip implements functions for jarcat that manipulate .zip files. |
|
please_diff_graphs
package main implements plz_diff_graphs, a small utility to take the JSON representation of two build graphs (as output from 'plz query graph') and produce a list of targets that have changed between the two.
|
package main implements plz_diff_graphs, a small utility to take the JSON representation of two build graphs (as output from 'plz query graph') and produce a list of targets that have changed between the two. |
|
please_diff_graphs/diff
Package diff contains the implementation of the graph differ.
|
Package diff contains the implementation of the graph differ. |
|
please_go_test/gotest
Package gotest contains utilities used by plz_go_test.
|
Package gotest contains utilities used by plz_go_test. |
|
please_maven
Package main implements please_maven, a command-line tool to find dependencies from a remote Maven repo (typically Maven Central, but can be others).
|
Package main implements please_maven, a command-line tool to find dependencies from a remote Maven repo (typically Maven Central, but can be others). |
|
please_pex
Package main implements please_pex, which builds runnable Python zip files for us.
|
Package main implements please_pex, which builds runnable Python zip files for us. |
|
please_pex/pex
Package pex implements construction of .pex files in Go.
|
Package pex implements construction of .pex files in Go. |
|
release_signer
Package main implements an OpenPGP-compatible signer for our releases.
|
Package main implements an OpenPGP-compatible signer for our releases. |