linux/poky.git/bitbake/lib/bb/parse, branch 5.3_M2

bitbake: parse/ast: add support for 'built-in' fragments

2025-06-20T11:03:37+00:00

When reviewing proposed fragments to add settings for DISTRO and MACHINE, RP noted that such fragments only add clutter and overhead, and there's no need to maintain them as separate files. Rather when bitbake sees 'fragmentvar/fragmentvalue' it can expand that into FRAGMENTVAR = "fragmentvalue". To achieve that, 'addfragments' directive is extended with a parameter that sets the name of the variable that holds definitions of such built-in fragments, for example like this: "machine:MACHINE distro:DISTRO" Then each enabled fragment name is matched against these definitions and the respective variable is set, e.g. 'machine/qemuarm' would match 'machine:MACHINE' and result in MACHINE set to 'qemuarm'. This happens before any fragment files are looked up on disk, and no such lookup happens if there was a match, which should prevent possible misuse of the feature. So the builtin fragment definition is also an allowlist for them. Please also see the patches for oe-core that show an application of the feature. (Bitbake rev: 3b9d7bea915dc7f10e845854f1dae325743f9456) Signed-off-by: Alexander Kanavin Signed-off-by: Richard Purdie

bitbake: ast/BBHandler: Add support for BB_DEFER_BBCLASSES

2025-06-16T21:23:18+00:00

Add support for automatically promoting class inherits to deferred inherits by listing them in the BB_DEFER_BBCLASSES variable. (Bitbake rev: 8e741b2e885a12d119788d04aa4efcd724dd6bfa) Signed-off-by: Richard Purdie

bitbake: event: Add event for deferred inherits

2025-06-16T21:23:18+00:00

Now that deferred inherits are extension specific, we can pass this list to an event, which our metadata can use to set class overrides earlier (as an example). There are limitations to this, the list of classes is unexpanded and recursive classes are not visible. There isn't much that can be done about this, the ones we are interested in would usually be visible at the top level (such as class extensions). (Bitbake rev: 205d461c05fc7b4a7c81039af3bc3fd71cbb982c) Signed-off-by: Richard Purdie

bitbake: ast: Change deferred inherits to happen per recipe

2025-06-16T21:23:18+00:00

Currently deferred inherits get processed once for all class extensions as a minor speed optimisation. Unfortunately this limits our options for being able to report deferred classes to our code. There are two challenges with using our deferred classes in OE at present. One is that PACKAGECONFIG values don't work well with class overrides like class-native if there are deferred classes based on PACKAGECONFIG, such as python support. The second is that toolchain selection is proving problematic to implement due to interactions between the toolchain deferred inherit, the class extensions and class overrides being very late. By changing deferred inherits to be recipe extension specific, we open the way to generate events and "peek" at where things will end up, allowing the class overrides to be set earlier. The class extension code is updated to use a deferred inherit for the class extension inheriting so that it is still inherited last. (Bitbake rev: 29277cf4d88eb4dfa9572851177d009eab5afd0c) Signed-off-by: Richard Purdie

bitbake: parse/ConfHandler: Add warning for deprecated whitespace usage

2025-04-16T16:41:51+00:00

A lack of whitespace around variable assignment operators makes the files harder to read. There is a deeper issue in that a "+" character can sometimes be confused between the variable name and the assignment operator. Start showing warnings for such usage so we encourage people to use consistent whitespace which helps with file readability in general. (Bitbake rev: 24772dd2ae6c0cd11540a260f15065f906fb0997) Signed-off-by: Richard Purdie

bitbake: codeparser: Add function decorators for vardeps

2025-04-10T10:07:38+00:00

Adds bb.parse.vardeps bb.parse.excludevardeps function decorators that can be used to explicitly add or exclude variables from a python function parsed by bitbake (Bitbake rev: 030fb3dee067640a3a50f24a53d200bdb5048376) Signed-off-by: Joshua Watt Signed-off-by: Mathieu Dubois-Briand Signed-off-by: Richard Purdie

bitbake: parse: Forbid ambiguous assignments to ${.}, ${+}, and ${:} variables

2025-02-05T12:11:01+00:00

Old code that parse variable names in assignment commands behave differently for variables that ends with special symbol for single-character variable names and multi-character variable names. For example: A+="1" # Change variable ${A}, '+' glued to '=' A+ = "1" # Change variable ${A+} +="1" # Change variable ${+}, the '+' symbol not part of assignment operator + = "1" # Change variable ${+} New code would always assume that '.=', '+=', and ':=' is assignment operator. As result code like the following would raise parsing error +="value" While code with extra spaces would work as before + = "value" # Change variable ${+} This change allow to catch issues in code that generate bitbake configuration files in a manner like "echo ${VARNAME}+=${VALUE} >> conf/local.conf" (Bitbake rev: 93059aad13a12cd69d86368795c88e5349197d5d) Signed-off-by: Nikolai Merinov Signed-off-by: Richard Purdie

bitbake: parse/ast: Add support for BB_RECIPE_VIRTUAL_PROVIDERS

2025-01-21T23:09:33+00:00

Currently, providers are set on a global config basis. This change allows for a select set of providers configured in BB_RECIPE_VIRTUAL_PROVIDERS to be selected on a per recipe basis. This would allow for the selection of virtual/cross-cc as gcc or clang for example in OE-Core. DEPENDS and task flag [depends] values are processed. (Bitbake rev: fb119c7888ae8a749aa824f8c51780176af077f9) Signed-off-by: Richard Purdie

bitbake: data_smart: fix ??= operator for variable flags

2025-01-14T09:51:45+00:00

??= operator works for variable value by defining a "_defaultval" flag. Use something similar for flags: For the default value of the flag "flag_name", define a flag "_defaultval_flag_flagname" that is used when reading flag_name but no other value has been set. Fixes [YOCTO #15685] (Bitbake rev: 0329a7e3ac694737f2d2c1861f65492551360663) Signed-off-by: Yoann Congal Reviewed-by: Ghislain Mangé Suggested-by: Ola Nilsson Signed-off-by: Richard Purdie

bitbake: parse: Add include_all conf file directive

2024-12-17T11:48:25+00:00

In some cases it would be helpful to be able to have an include file in a standard location which is included in all layers that are added to the system. The intent is for these to provide configuration tweaks of specific types so that a given file pattern can be adopted more widely for such configuration. The code will search for any named configuration file within BBPATH, so a configuration directive of: include_all conf/distro/include/myinc.conf would include the myinc.conf file in that subpath if present in any directory in BBPATH. Multiple files will be included if present. (Bitbake rev: d01d5593e7829ac60f37bc23cb87dc6917026471) Signed-off-by: Richard Purdie