extract_kernel.py: add support to output compiler information
Test: tested with android-mainline gki kernel from
https://android.googlesource.com/kernel/prebuilts/mainline/arm64/
Signed-off-by: Yongqin Liu <yongqin.liu@linaro.org>
Change-Id: Ibf3eeb3679b233cd0d54501d385f442e0c0c34ec
diff --git a/tools/extract_kernel.py b/tools/extract_kernel.py
index 92a647b..0046b38 100755
--- a/tools/extract_kernel.py
+++ b/tools/extract_kernel.py
@@ -40,7 +40,7 @@
# LINUX_COMPILE_HOST ") (" LINUX_COMPILER ") " UTS_VERSION "\n";
LINUX_BANNER_PREFIX = b'Linux version '
LINUX_BANNER_REGEX = LINUX_BANNER_PREFIX + \
- r'(?P<release>(?P<version>[0-9]+[.][0-9]+[.][0-9]+).*) \(.*@.*\) \(.*\) .*\n'
+ r'(?P<release>(?P<version>[0-9]+[.][0-9]+[.][0-9]+).*) \(.*@.*\) \((?P<compiler>.*)\) .*\n'
def get_from_release(input_bytes, start_idx, key):
@@ -82,6 +82,14 @@
return dump_from_release(input_bytes, "version")
+def dump_compiler(input_bytes):
+ """
+ Dump kernel version, w.x.y, from input_bytes. Search for the string
+ "Linux version " and do pattern matching after it. See LINUX_BANNER_REGEX.
+ """
+ return dump_from_release(input_bytes, "compiler")
+
+
def dump_release(input_bytes):
"""
Dump kernel release, w.x.y-..., from input_bytes. Search for the string
@@ -208,6 +216,13 @@
nargs='?',
type=argparse.FileType('wb'),
const=sys.stdout)
+ parser.add_argument('--output-compiler',
+ help='If specified, write the compiler information. Use stdout if no file '
+ 'is specified.',
+ metavar='FILE',
+ nargs='?',
+ type=argparse.FileType('wb'),
+ const=sys.stdout)
parser.add_argument('--tools',
help='Decompression tools to use. If not specified, PATH '
'is searched.',
@@ -234,6 +249,10 @@
"kernel release in {}".format(args.input.name)):
ret = 1
+ if not dump_to_file(args.output_compiler, dump_compiler, input_bytes,
+ "kernel compiler in {}".format(args.input.name)):
+ ret = 1
+
return ret
