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authorRichard Purdie <richard.purdie@linuxfoundation.org>2021-04-16 18:05:33 +0100
committerRichard Purdie <richard.purdie@linuxfoundation.org>2021-05-06 11:07:12 +0100
commit4c1881b620e885f55d7772f8626b8a76c2828333 (patch)
tree5ca9d4c8fba079911b71316d4730e6f3df8c8ab5 /bin
parenta944a335f8f4c4fe5df55f3d7d8e757bd2835146 (diff)
downloadbitbake-4c1881b620e885f55d7772f8626b8a76c2828333.tar.gz
bin/bitbake-getvar: Add a new command to query a variable value (with history)
We've talked about having this for long enough. Add a command which queries a single variable value with history. This saves "bitbake -e | grep" and avoids the various pitfalls that has. It also provides a neat example of using tinfoil to make such a query. Parameters to limit the output to just the value, to limit to a variable flag and to not expand the output are provided. [YOCTO #10748] Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'bin')
-rwxr-xr-xbin/bitbake-getvar48
1 files changed, 48 insertions, 0 deletions
diff --git a/bin/bitbake-getvar b/bin/bitbake-getvar
new file mode 100755
index 000000000..942321925
--- /dev/null
+++ b/bin/bitbake-getvar
@@ -0,0 +1,48 @@
+#! /usr/bin/env python3
+#
+# Copyright (C) 2021 Richard Purdie
+#
+# SPDX-License-Identifier: GPL-2.0-only
+#
+
+import argparse
+import io
+import os
+import sys
+
+bindir = os.path.dirname(__file__)
+topdir = os.path.dirname(bindir)
+sys.path[0:0] = [os.path.join(topdir, 'lib')]
+
+import bb.tinfoil
+
+if __name__ == "__main__":
+ parser = argparse.ArgumentParser(description="Bitbake Query Variable")
+ parser.add_argument("variable", help="variable name to query")
+ parser.add_argument("-r", "--recipe", help="Recipe name to query", default=None, required=False)
+ parser.add_argument('-u', '--unexpand', help='Do not expand the value (with --value)', action="store_true")
+ parser.add_argument('-f', '--flag', help='Specify a variable flag to query (with --value)', default=None)
+ parser.add_argument('--value', help='Only report the value, no history and no variable name', action="store_true")
+ args = parser.parse_args()
+
+ if args.unexpand and not args.value:
+ print("--unexpand only makes sense with --value")
+ sys.exit(1)
+
+ if args.flag and not args.value:
+ print("--flag only makes sense with --value")
+ sys.exit(1)
+
+ with bb.tinfoil.Tinfoil(tracking=True) as tinfoil:
+ if args.recipe:
+ tinfoil.prepare(quiet=2)
+ d = tinfoil.parse_recipe(args.recipe)
+ else:
+ tinfoil.prepare(quiet=2, config_only=True)
+ d = tinfoil.config_data
+ if args.flag:
+ print(str(d.getVarFlag(args.variable, args.flag, expand=(not args.unexpand))))
+ elif args.value:
+ print(str(d.getVar(args.variable, expand=(not args.unexpand))))
+ else:
+ bb.data.emit_var(args.variable, d=d, all=True)