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This works:

Running semantic-decoration-include-visit (opens the included header): 

#include <string.h>    
#include "/usr/include/gtk-3.0/gtk/gtk.h"

Works well.

This does not:

But if I run it on a relative gtk path:

#include <gtk/gtk.h>

Then I get an error:
semantic-decoration-include-visit: Could not location include gtk/gtk.h

Troubleshooting attempts:

  1. Add include manually:

    (semantic-add-system-include "/usr/include/gtk-3.0/gtk")

  2. My own .h file:
    If I create a 'hello.h' inside /usr/include, and add the following to some C file, then semantic include visit works on that also:

    #include <hello.c>

  3. Sym linking /usr/include/gtk to /usr/include/gtk-3.0/gtk

    cd /usr/include
    sudo ln -s gtk-3.0/gtk gtk

    This actually gets the desired result. (but this has issues as I do Gtk2/Gtk3 development and I'd have to re-link many many many times...

My question being, why doesn't (semantic-add-system-include "/usr/include/gtk-3.0/gtk") make it so that is properly located?

Please note
- I'm an intern, learning about C development. I might be missing something obvious.
- I'm setting up Emacs for C-Development as per this guide
- I'm on Emacs 25.0.50.4, using build-in CEDET (although tried with latest CEDET, had same error) - I compile the gtk using pkg-config which appends some flags: 

gcc `pkg-config --cflags gtk+-3.0` -o main main.c `pkg-config --libs gtk+-3.0`

SOLUTION
As per comment below, It turns out this is wrong:

(semantic-add-system-include "/usr/include/gtk-3.0/gtk")

This is Correct (minus 'gtk' at end), to match the pattern:

(semantic-add-system-include "/usr/include/gtk-3.0/)
Leo Ufimtsev
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  • Do you mean Emacs 24.4? Have you considered filing a bug? `M-x report-emacs-bug`. – PythonNut Apr 15 '15 at 21:16
  • I made typo. I have: 25.0.50.4 (quite recent...). I'm now pulling the cedet sources to see if it's fixed in recent versions. – Leo Ufimtsev Apr 15 '15 at 21:21
  • Just add `(semantic-add-system-include "/usr/include/gtk-3.0/")`. It is because you use include your header as `#include `, so the file you included will be found when the two paths are combined. It is the same thing for other packages or editors out there. For example, see this [reddit question](http://www.reddit.com/r/emacs/comments/2yiquv/one_library_in_clang_complete_is_not_being/) which is similar issue to yours. – Tu Do Apr 16 '15 at 03:03
  • @TuDo omg, your suggestion works perfectly. I spent 4 hours trying to figure it out and it was a little peculiar detail like that :-D. I'd happily accept is as an answer if you post it as one? – Leo Ufimtsev Apr 16 '15 at 13:48

1 Answers1

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Just add (semantic-add-system-include "/usr/include/gtk-3.0/"). It is because you use include your header as #include <gtk/gtk.h>, so the file you included will be found when the two paths are combined. It is the same thing for other packages or editors out there.

Tu Do
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