From: Ahmed S. Darwish darwi@linutronix.de
commit e1b37563caffc410bb4b55f153ccb14dede66815 upstream.
gtags considers any file outside of its current working directory "outside the source tree" and refuses to index it. For O= kernel builds, or when "make" is invoked from a directory other then the kernel source tree, gtags ignores the entire kernel source and generates an empty index.
Force-set gtags current working directory to the kernel source tree.
Due to commit 9da0763bdd82 ("kbuild: Use relative path when building in a subdir of the source tree"), if the kernel build is done in a sub-directory of the kernel source tree, the kernel Makefile will set the kernel's $srctree to ".." for shorter compile-time and run-time warnings. Consequently, the list of files to be indexed will be in the "../*" form, rendering all such paths invalid once gtags switches to the kernel source tree as its current working directory.
If gtags indexing is requested and the build directory is not the kernel source tree, index all files in absolute-path form.
Note, indexing in absolute-path form will not affect the generated index, as paths in gtags indices are always relative to the gtags "root directory" anyway (as evidenced by "gtags --dump").
Signed-off-by: Ahmed S. Darwish darwi@linutronix.de Cc: stable@vger.kernel.org Signed-off-by: Masahiro Yamada masahiroy@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- scripts/tags.sh | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)
--- a/scripts/tags.sh +++ b/scripts/tags.sh @@ -25,6 +25,13 @@ else tree=${srctree}/ fi
+# gtags(1) refuses to index any file outside of its current working dir. +# If gtags indexing is requested and the build output directory is not +# the kernel source tree, index all files in absolute-path form. +if [[ "$1" == "gtags" && -n "${tree}" ]]; then + tree=$(realpath "$tree")/ +fi + # Detect if ALLSOURCE_ARCHS is set. If not, we assume SRCARCH if [ "${ALLSOURCE_ARCHS}" = "" ]; then ALLSOURCE_ARCHS=${SRCARCH} @@ -124,7 +131,7 @@ docscope()
dogtags() { - all_target_sources | gtags -i -f - + all_target_sources | gtags -i -C "${tree:-.}" -f - "$PWD" }
# Basic regular expressions with an optional /kind-spec/ for ctags and