CODEWITHSUNDEEP
clinuxgccindicator
multiholle
multiholle

Reputation: 3160

How can I include a needed C library using GCC?

I am trying to compile the simple C example from this tutorial on Ubuntu using GCC. What do I have to use as arguments for GCC to include the needed libraries for #include <libappindicator/app-indicator.h>?

Upvotes: 29

Views: 120920

Answers (7)

Vicky Aryan
Vicky Aryan

Reputation: 19

The default path for all c++ include files like library files and header files in ubuntu/linux are found in /usr/include/c++/11

Upvotes: 0

lijo
lijo

Reputation: 323

Use:

gcc example.c -o example  `pkg-config --cflags --libs appindicator-0.1`

pkg-config will fetch the required include and library flags for libappindicator and its dependencies. This assumes libappindictaor-dev package is already installed.

Upvotes: 7

hytromo
hytromo

Reputation: 1531

What I do is:

pkg-config --list-all | grep indicator

Upvotes: 6

manugupt1
manugupt1

Reputation: 2437

You are trying to make a GTK app, and the previous solutions are as applicable anywhere like using the -l option and -I option,

However, for GTK applications, you may also use pkg-config which makes it easier as your paths can be predefined.

An interesting example can be found in http://developer.gnome.org/gtk/2.24/gtk-compiling.html

Upvotes: 1

Kristofer
Kristofer

Reputation: 3269

-I<search path to include files>
-L<search path to the lib file>
-l<libname>

Upvotes: 100

QuantumMechanic
QuantumMechanic

Reputation: 13946

If you used apt-get, Synaptic Package Manager, etc. to get the appindicator library (vs. building it from source), did you only install the libappindicator1 package or did you also install libappindicator-dev to get the libappindicator header files? Linux packages very often have split the runtime libraries from the compile-time headers. That way people who only need the libraries to satisfy a dynamic link don't have to install unneeded headers. But since you're doing development you need those headers and therefore need the libappindicator-dev package as well.

Upvotes: 6

Vijay Mathew
Vijay Mathew

Reputation: 27174

Use the -l command line option. You can specify the library search path with the -L option. E.g:

gcc -o myprogram -lfoo -L/home/me/foo/lib myprogram.c

This will link myprogram with the static library libfoo.a in the folder /home/me/foo/lib.

Upvotes: 21

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