cross-posted from: https://lemmy.ml/post/17545833

im new to system programming, idk if thats the issuse. but according gcc, it can not find dbus/dbus-arch-deps.h and thats all i know. any idea about this issue?

 program
[I] tomri@artix ~ [1]> cat main.c
#include <dbus-1.0/dbus/dbus.h>

int main(void) { return 0; }

# error
[I] tomri@artix ~> gcc main.c
In file included from main.c:1:
/usr/include/dbus-1.0/dbus/dbus.h:29:10: fatal error: dbus/dbus-arch-deps.h: No such file or directory
   29 | #include <dbus/dbus-arch-deps.h>
      |          ^~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.

[I] tomri@artix ~> ls -la /usr/include/dbus-1.0/dbus/
total 216
drwxr-xr-x 2 root root  4096 Jul  2 20:26 ./
drwxr-xr-x 3 root root  4096 Jun 15 21:36 ../
-rw-r--r-- 1 root root  2809 Jan 14 06:17 dbus-address.h
-rw-r--r-- 1 root root  3470 Jan 14 06:17 dbus-bus.h
-rw-r--r-- 1 root root 27018 Jan 14 06:17 dbus-connection.h
-rw-r--r-- 1 root root  2909 Jan 14 06:17 dbus-errors.h
-rw-r--r-- 1 root root 22076 Jun  8  2023 dbus-glib-bindings.h
-rw-r--r-- 1 root root  2575 Jun  8  2023 dbus-glib-lowlevel.h
-rw-r--r-- 1 root root 14766 Jun  8  2023 dbus-glib.h
-rw-r--r-- 1 root root  8969 Jun  8  2023 dbus-gtype-specialized.h
-rw-r--r-- 1 root root  1464 Jun  8  2023 dbus-gvalue-parse-variant.h
-rw-r--r-- 1 root root  7246 Jan 14 06:17 dbus-macros.h
-rw-r--r-- 1 root root  1961 Jan 14 06:17 dbus-memory.h
-rw-r--r-- 1 root root 15259 Jan 14 06:17 dbus-message.h
-rw-r--r-- 1 root root  1810 Jan 14 06:17 dbus-misc.h
-rw-r--r-- 1 root root  3809 Jan 14 06:17 dbus-pending-call.h
-rw-r--r-- 1 root root 23956 Jan 14 06:17 dbus-protocol.h
-rw-r--r-- 1 root root  5412 Jan 14 06:17 dbus-server.h
-rw-r--r-- 1 root root  5392 Jan 14 06:17 dbus-shared.h
-rw-r--r-- 1 root root  3047 Jan 14 06:17 dbus-signature.h
-rw-r--r-- 1 root root  2359 Jan 14 06:17 dbus-syntax.h
-rw-r--r-- 1 root root  8505 Jan 14 06:17 dbus-threads.h
-rw-r--r-- 1 root root  4143 Jan 14 06:17 dbus-types.h
-rw-r--r-- 1 root root  3961 Jan 14 06:17 dbus.h
[I] tomri@artix ~> 

# my system
[I] tomri@artix ~> uname --all
Linux artix 6.9.7-artix1-1 #1 SMP PREEMPT_DYNAMIC Fri, 28 Jun 2024 18:11:28 +0000 x86_64 GNU/Linux
  • BB_C@programming.dev
    4·
    5 months ago
    % pkg-config --cflags dbus-1
-I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include
% pkg-config  --libs dbus-1
-ldbus-1

    gcc main.c `pkg-config --cflags --libs dbus-1`

    You don’t need to link against the library yet, but you will.

    Linking might become a separate step when you have multiple files, not just main.

    • t0mri@lemmy.mlOP
      2·
      5 months ago

      pkg-config --cflags --libs dbus-1

      thanks! this allows me compile my program with no error. why gcc couldnt do this automatically? i mean its supposed to do this right? and another important issue that clang ls (language server) showed the same error? i thought fixing this would fix that too, but that isnt the case here. without clang ls running i wont get any auto completions. thanks again

      • BB_C@programming.dev
        2·
        5 months ago

        why gcc couldnt do this automatically? i mean its supposed to do this right?

        Because gcc is a compiler, not a build tool.

        Maybe you come from a language where the two tasks are combined, but that’s not the case here.

        and another important issue that clang ls (language server) showed the same error? i thought fixing this would fix that too, but that isnt the case here.

        For the same reason stated above, clangd needs to know how you build your code. This is done via a JSON file called compile_commands.json.

        In your trivial case, running this should be enough:

        clang -MJ- main.c `pkg-config --cflags --libs dbus-1` > compile_commands.json