cca88a8133
VAL=xxx... and VAL=$VAL:xxx... are supported; all other syntaxes will fail with an error message. When combined with a build/jam patch that will come in a later commit, this makes it possible to build a large number of targets using exec as JAMSHELL; including all of libroot. The performance difference is extremely obvious: jam -j2 libroot, JAMSHELL=/bin/sh (32-bit Haiku) real 1m43.571s user 1m10.961s sys 1m7.965s jam -j2 libroot, JAMSHELL=exec real 1m28.364s user 0m58.190s sys 0m57.563s So that is a savings of 15.21 seconds, or 15% of the build time. Something that is less I/O bound and more fork-bound (e.g. linking application catalogs) will almost certainly see an even bigger performance difference. Changes to add the necessary JAMSHELL overrides for those targets which need it, in order to make it possible to enable usage of "exec" by default, will be coming over the next few days/weeks...
Haiku
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Haiku is an open-source operating system that specifically targets personal computing. Inspired by the BeOS, Haiku is fast, simple to use, easy to learn and yet very powerful.
Goals
- Sensible defaults with minimal configuration required.
- Clean, clear, concise code.
- Unified desktop environment.
Trying Haiku
Haiku provides pre-built nightly images and release images. Haiku is compatible with a large variety of hardware, but in case you don't want to "take the plunge" and install Haiku on bare metal, you can install it on a virtual machine (VM) instead. If you've never used a VM before, you can follow one of the "Emulating Haiku" guides.
Compiling Haiku
See ReadMe.Compiling.
Contributing
Haiku is a meritocratic open source project with a large variety of tasks. Even if you can't write code, you can still help! Haiku needs designers, (technical) writers, translators, testers... Get involved and help out!
Contributing code
If you're submitting a patch to us, please make sure you're following the patch submitting guidelines.
If you're having trouble finding something in the source tree, you can use one of our OpenGrok servers:
- http://xref.plausible.coop/ (provided by Landon Fuller)
- http://code.metager.de/source/xref/haiku (provided by MetaGer)
Contributing documentation
The main piece of documentation that still needs work are the API docs (found
in the tree at docs/user). Just find an undocumented class, write
documentation for it, and submit a patch.
Contributing translations
See wiki:i18n.
Contributing software ports
See HaikuPorts.
Contributing to our infrastructure
See Infrastructure.