mirror of
https://gitlab.com/ita1024/waf.git
synced 2024-12-11 11:20:21 +01:00
34 lines
1.8 KiB
Plaintext
34 lines
1.8 KiB
Plaintext
The new "concurrent.futures" module from Python 3.2 will make it
|
|
even easier to execute tasks concurrently:
|
|
http://www.python.org/dev/peps/pep-3148/
|
|
|
|
It may be tempting to try to create a new build system from it,
|
|
but that's only a small part of a build system:
|
|
|
|
* reinventing a system for handling commands and command-line options
|
|
* adding a system of (task) order and dependencies
|
|
* creating an extension system for new programming languages
|
|
* handling exceptions and errors
|
|
* adding support for python versions < 3.2
|
|
|
|
All this represents a lot of work, and there are of course lots of design
|
|
mistakes to avoid. It is so easy to create a system with poor usability,
|
|
poor extensibility, and poor performance.
|
|
|
|
These pitfalls and many others are already solved in the Waf build system, which
|
|
also enables the re-use of its components into new build tools. By using these
|
|
tested and maintained components, much more time will be left to work
|
|
on the interesting problems such as creating an intuitive XML/YAML/JSON schema
|
|
or creating a domain-specific programming language (make-like, cmake-like, ...),
|
|
or extracting commands and dependencies to create derivated files (Makefiles, Visual studio, ..)
|
|
|
|
A few examples are provided to illustrate the range of possibilities:
|
|
* overview: how to create a custom file using the waf framework to perform a simple build
|
|
* parser: how to add a parser for a domain-specific language
|
|
* noscript: infer what to build from given files, use no script file
|
|
* makefile_dumper: create a makefile corresponding to the current build, extracting as many dependencies as possible
|
|
* nostate: use timestamps only, and no build directory (very make-like)
|
|
* extpy: a custom waf file able to read wscript files having the extension ".py"
|
|
|
|
Thomas Nagy, 2010-2011
|