bitbake-listflags: add new script

to list all bitbake flags of a variable, potentially
including values

Signed-off-by: Konrad Weihmann <[email protected]>

README.md

@@ -25,9 +25,10 @@ A collection of build utils to be used with YOCTO
 
 ## Available scripts
 
-| script           | summary                                                             | documentation                           |
-| ---------------- | ------------------------------------------------------------------- | --------------------------------------- |
-| bitbake-listvars | list all defined bitbake variable                                   | [docu](docs/scripts-bitbakelistvars.md) |
-| dot2tree         | create filterable trees from recipe info                            | [docu](docs/scripts-dot2tree.md)        |
-| newlayercheck    | check a layer for possible corruptions/changes of an existing stack | [docu](docs/scripts-newlayercheck.md)   |
-| unused           | identify unused recipes in a layer                                  | [docu](docs/scripts-unused.md)          |
+| script            | summary                                                             | documentation                            |
+| ----------------- | ------------------------------------------------------------------- | ---------------------------------------- |
+| bitbake-listflags | list all defined flgas of a bitbake variable                        | [docu](docs/scripts-bitbakelistflags.md) |
+| bitbake-listvars  | list all defined bitbake variable                                   | [docu](docs/scripts-bitbakelistvars.md)  |
+| dot2tree          | create filterable trees from recipe info                            | [docu](docs/scripts-dot2tree.md)         |
+| newlayercheck     | check a layer for possible corruptions/changes of an existing stack | [docu](docs/scripts-newlayercheck.md)    |
+| unused            | identify unused recipes in a layer                                  | [docu](docs/scripts-unused.md)           |

docs/scripts-bitbake-listflags.md

@@ -0,0 +1,11 @@
+# bitbake-listflags
+
+List all defined variable flags
+
+## Usage
+
+From a setup OE/Yocto build
+
+```shell
+<path to checkout>/scripts/bitbake-listflags $(which bitbake) <var>
+```

scripts/bitbake-listflags

@@ -0,0 +1,54 @@
+#! /usr/bin/env python3
+# Copyright (C) 2021 Richard Purdie
+# Copyright (c) 2024, Konrad Weihmann
+# SPDX-License-Identifier: GPL-2.0-only
+
+# Based on bitbake-getvar
+# Lists all defined flags of a variable
+
+import argparse
+import os
+import sys
+import warnings
+
+
+def main(args=None):
+    parser = argparse.ArgumentParser(description="Bitbake List Flags")
+    parser.add_argument(
+        '-q', '--quiet', help='Silence bitbake server logging', action="store_true")
+    parser.add_argument('-v', '--value', action='store_true',
+                        help='Print with value')
+    parser.add_argument('bitbake', help='Path to bitbake binary')
+    parser.add_argument('var', help='Variable to poll for')
+    args = parser.parse_args()
+
+    bindir = os.path.dirname(args.bitbake)
+    topdir = os.path.dirname(bindir)
+    sys.path[0:0] = [os.path.join(topdir, 'lib')]
+
+    import bb.tinfoil
+
+    quiet = args.quiet
+    with bb.tinfoil.Tinfoil(tracking=True, setup_logging=not quiet) as tinfoil:
+        tinfoil.prepare(quiet=2, config_only=True)
+        d = tinfoil.config_data
+
+        for k, v in d.getVarFlags(args.var).items():
+            if ':' in k:
+                continue
+            if k.startswith('_'):
+                continue
+            if args.value:
+                yield (k, v)
+            else:
+                yield k
+
+
+if __name__ == "__main__":
+    warnings.simplefilter("default")
+    result = main()
+    for item in result:
+        if isinstance(item, tuple):
+            print(f'{item[0]}:{item[1]}')
+        else:
+            print(item)