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f299c1f5e8
A new build tier is introduced: precompile. The intention is to replace the export subtier with something better and nonrecursive. IPDL and WebIDL code generation have been moved into this new tier and are performed concurrently. This appears to reduce build times due to fewer "single threaded" build actions. The subtier tracking UI has been updated to reflect operations that can occur in parallel. As subtiers are started, they turn yellow. They can then complete in any order. Nonrecursive targets have been added to preserve the IPDL and WebIDL build targets such that developers can type |make| from leaf directories like they have always done. |
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| .. | ||
| dumbmake | ||
| mozbuild | ||
| mozpack | ||
| README.rst | ||
| setup.py | ||
| TODO | ||
======== mozbuild ======== mozbuild is a Python package providing functionality used by Mozilla's build system. Modules Overview ================ * mozbuild.backend -- Functionality for producing and interacting with build backends. A build backend is an entity that consumes build system metadata (from mozbuild.frontend) and does something useful with it (typically writing out files that can be used by a build tool to build the tree). * mozbuild.compilation -- Functionality related to compiling. This includes managing compiler warnings. * mozbuild.frontend -- Functionality for reading build frontend files (what defines the build system) and converting them to data structures which are fed into build backends to produce backend configurations. * mozpack -- Functionality related to packaging builds. Overview ======== The build system consists of frontend files that define what to do. They say things like "compile X" "copy Y." The mozbuild.frontend package contains code for reading these frontend files and converting them to static data structures. The set of produced static data structures for the tree constitute the current build configuration. There exist entities called build backends. From a high level, build backends consume the build configuration and do something with it. They typically produce tool-specific files such as make files which can be used to build the tree. Piecing it all together, we have frontend files that are parsed into data structures. These data structures are fed into a build backend. The output from build backends is used by builders to build the tree.