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Makefile: add GNU global tags support

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GNU Global is another tags engine which is more like cscope in being
able to support finding both references and definitions. You will be
un-surprised to know it also integrates well with Emacs.

The main benefit of integrating it into find-src-path is it takes less
time to rebuild the database from scratch when you have a lot of build
directories under your source tree.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210114165730.31607-3-alex.bennee@linaro.org>
This commit is contained in:
Alex Bennée 2021-01-14 16:57:20 +00:00
parent 8714e811a5
commit b8a322549b
2 changed files with 16 additions and 1 deletions
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3
.gitignore vendored
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@ -7,6 +7,9 @@
cscope.*
tags
TAGS
GPATH
GRTAGS
GTAGS
*~
*.ast_raw
*.depend_raw

14
Makefile
View File

@ -253,6 +253,18 @@ ctags:
rm -f "$(SRC_PATH)/"tags
$(find-src-path) -exec ctags -f "$(SRC_PATH)/"tags --append {} +
.PHONY: gtags
gtags:
$(call quiet-command, \
rm -f "$(SRC_PATH)/"GTAGS; \
rm -f "$(SRC_PATH)/"GRTAGS; \
rm -f "$(SRC_PATH)/"GPATH, \
"GTAGS", "Remove old $@ files")
$(call quiet-command, \
(cd $(SRC_PATH) && \
$(find-src-path) | gtags -f -), \
"GTAGS", "Re-index $(SRC_PATH)")
.PHONY: TAGS
TAGS:
rm -f "$(SRC_PATH)/"TAGS
@ -279,7 +291,7 @@ help:
$(call print-help,all,Build all)
$(call print-help,dir/file.o,Build specified target only)
$(call print-help,install,Install QEMU, documentation and tools)
$(call print-help,ctags/TAGS,Generate tags file for editors)
$(call print-help,ctags/gtags/TAGS,Generate tags file for editors)
$(call print-help,cscope,Generate cscope index)
$(call print-help,sparse,Run sparse on the QEMU source)
@echo ''