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@xuhdev
Last active June 13, 2024 15:47
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Generate ctags file for C or C++ files and its depedencies (included header files). This could avoid you to always generate a huge tags file.
#!/bin/sh
# https://www.topbug.net/blog/2012/03/17/generate-ctags-files-for-c-slash-c-plus-plus-source-files-and-all-of-their-included-header-files/
# ./ctags_with_dep.sh file1.c file2.c ... to generate a tags file for these files.
gcc -M "$@" | sed -e 's/[\\ ]/\n/g' | \
sed -e '/^$/d' -e '/\.o:[ \t]*$/d' | \
ctags -L - --c++-kinds=+p --fields=+iaS --extra=+q
@squm
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squm commented Jan 2, 2017

tr '\\ ' '\n'

@ohhmm
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ohhmm commented Jun 23, 2017

why have not gcc an option to generate tags file?

@ohhmm
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ohhmm commented Jun 23, 2017

@candh
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candh commented Apr 12, 2019

This won't work on MacOS since sed on MacOS does not interpret '\n' as a newline.
So, another way of doing this would be:

gcc -M $* | tr '\\ ' '\n' | sed -e '/^$/d' -e '/\.o:[ \t]*$/d' | \
        ctags -L - --c++-kinds=+p --fields=+iaS --extra=+q

you could also replace the sed with gsed, and another hacks. but the above works for me. Thanks for the idea!

@Wurstnase
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I like it.
Add this directly into my makefile.

	@$(CC) -M $(CFLAGS) $(SRC) | sed -e 's/[\\ ]/\n/g' | \
		sed -e '/^$$/d' -e '/\.o:[ \t]*$$/d' | \
		ctags -L - --c-kinds=+p --fields=+iaSl --extra=+q --langmap=c:.c.h

@mehrshad-kh
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This won't work on MacOS since sed on MacOS does not interpret '\n' as a newline. So, another way of doing this would be:

gcc -M $* | tr '\\ ' '\n' | sed -e '/^$/d' -e '/\.o:[ \t]*$/d' | \
        ctags -L - --c++-kinds=+p --fields=+iaS --extra=+q

you could also replace the sed with gsed, and another hacks. but the above works for me. Thanks for the idea!

Well, it works just fine for me as of February 2023 on an Intel Mac.

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