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2019-11-04Add support for configuration exporting and importingBoris Kolpackov1-1/+1
The new config.export variable specifies the alternative file to write the configuration to as part of the configure meta-operation. For example: $ b configure: proj/ config.export=proj-config.build The config.export value "applies" only to the projects on whose root scope it is specified or if it is a global override (the latter is a bit iffy but we allow it, for example, to dump everything to stdout). This means that in order to save a subproject's configuration we will have to use a scope-specific override (since the default will apply to the outermost amalgamation). For example: $ b configure: subproj/ subproj/config.export=.../subproj-config.build This could be somewhat unnatural but then it will be the amalgamation whose configuration we normally want to export. The new config.import variable specifies additional configuration files to be loaded after the project's default config.build, if any. For example: $ b create: cfg/,cc config.import=my-config.build Similar to config.export, the config.import value "applies" only to the project on whose root scope it is specified or if it is a global override. This allows the use of the standard override "positioning" machinery (i.e., where the override applies) to decide where the extra configuration files are loaded. The resulting semantics is quite natural and consistent with command line variable overrides, for example: $ b config.import=.../config.build # outermost amalgamation $ b ./config.import=.../config.build # this project $ b !config.import=.../config.build # every project Both config.export and config.import recognize the special `-` file name as an instruction to write/read to/from stdout/stdin, respectively. For example: $ b configure: src-prj/ config.export=- | b configure: dst-prj/ config.import=-
2019-10-22Implement loaded_modules state lockingBoris Kolpackov1-1/+3
This would be necessary if someone runs two parallel top-level contexts.
2019-10-22Rename global_mutex_shards to global_mutexesBoris Kolpackov1-2/+2
2019-10-22Move global mutex shards to contextBoris Kolpackov1-0/+2
2019-08-28Redo build_installed without requiring linking whole archiveBoris Kolpackov1-1/+3
2019-08-27Propagate global var overrides to module build contextBoris Kolpackov1-0/+7
2019-08-27Redo module context pointerBoris Kolpackov1-3/+5
2019-08-27Don't set import.build2 variable in cross-compiled build2Karen Arutyunov1-1/+1
2019-08-26Implement auto-import of development build2 buildBoris Kolpackov1-0/+10
2019-08-26Implement updating build system modulesBoris Kolpackov1-3/+9
2019-08-26Make target types project-wideBoris Kolpackov1-5/+8
2019-08-23Introduce notion of build contextBoris Kolpackov1-414/+396
All non-const global state is now in class context and we can now have multiple independent builds going on at the same time.
2019-08-21Cleanup context.hxx and its usageBoris Kolpackov1-183/+32
2019-08-21Implement dynamic loading of build system modulesBoris Kolpackov1-4/+1
2019-08-20Add build.version.interfaceBoris Kolpackov1-0/+11
This build system interface version should be embedded into build system modules as load_suffix.
2019-08-19Minor cleanupsBoris Kolpackov1-48/+50
2019-08-07Distinguish between internal/external wait deactivation in schedulerBoris Kolpackov1-4/+4
This turns out to be necessary for the deadlock detection to work properly.
2019-07-01Split build system into library and driverBoris Kolpackov1-0/+1026