From: Cristian Ciocaltea cristian.ciocaltea@collabora.com
commit 7394d2ebb651a9f62e08c6ab864aac015d27c64d upstream.
When COMPILED_SOURCE is set, running
make ARCH=x86_64 COMPILED_SOURCE=1 cscope tags
could throw the following errors:
scripts/tags.sh: line 98: /usr/bin/realpath: Argument list too long cscope: no source files found scripts/tags.sh: line 98: /usr/bin/realpath: Argument list too long ctags: No files specified. Try "ctags --help".
This is most likely to happen when the kernel is configured to build a large number of modules, which has the consequence of passing too many arguments when calling 'realpath' in 'all_compiled_sources()'.
Let's improve this by invoking 'realpath' through 'xargs', which takes care of properly limiting the argument list.
Signed-off-by: Cristian Ciocaltea cristian.ciocaltea@collabora.com Link: https://lore.kernel.org/r/20220516234646.531208-1-cristian.ciocaltea@collabo... Cc: Carlos Llamas cmllamas@google.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- scripts/tags.sh | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-)
--- a/scripts/tags.sh +++ b/scripts/tags.sh @@ -95,10 +95,13 @@ all_sources()
all_compiled_sources() { - realpath -es $([ -z "$KBUILD_ABS_SRCTREE" ] && echo --relative-to=.) \ - include/generated/autoconf.h $(find $ignore -name "*.cmd" -exec \ - grep -Poh '(?(?=^source_.* \K).*|(?=^ \K\S).*(?= \))' {} + | - awk '!a[$0]++') | sort -u + { + echo include/generated/autoconf.h + find $ignore -name "*.cmd" -exec \ + grep -Poh '(?(?=^source_.* \K).*|(?=^ \K\S).*(?= \))' {} + | + awk '!a[$0]++' + } | xargs realpath -es $([ -z "$KBUILD_ABS_SRCTREE" ] && echo --relative-to=.) | + sort -u }
all_target_sources()