<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >Compiling Hello World</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REL="HOME" TITLE="GTK+ 2.0 Tutorial" HREF="book1.html"><LINK REL="UP" TITLE="Getting Started" HREF="c39.html"><LINK REL="PREVIOUS" TITLE="Getting Started" HREF="c39.html"><LINK REL="NEXT" TITLE="Theory of Signals and Callbacks" HREF="x159.html"></HEAD ><BODY CLASS="SECT1" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >GTK+ 2.0 Tutorial</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="c39.html" ACCESSKEY="P" ><<< Previous</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >Getting Started</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="x159.html" ACCESSKEY="N" >Next >>></A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="SEC-COMPILING" >Compiling Hello World</A ></H1 ><P >To compile use:</P ><P ><P CLASS="LITERALLAYOUT" ><TT CLASS="LITERAL" >gcc -Wall -g helloworld.c -o helloworld `pkg-config --cflags gtk+-2.0` \</TT ><br> <TT CLASS="LITERAL" > `pkg-config --libs gtk+-2.0`</TT ></P ></P ><P >This uses the program <TT CLASS="LITERAL" >pkg-config</TT >, which can be obtained from <A HREF="http://www.freedesktop.org" TARGET="_top" >www.freedesktop.org</A >. This program reads the <TT CLASS="FILENAME" >.pc</TT > which comes with GTK to determine what compiler switches are needed to compile programs that use GTK. <TT CLASS="LITERAL" >pkg-config --cflags gtk+-2.0</TT > will output a list of include directories for the compiler to look in, and <TT CLASS="LITERAL" >pkg-config --libs gtk+-2.0</TT > will output the list of libraries for the compiler to link with and the directories to find them in. In the above example they could have been combined into a single instance, such as <TT CLASS="LITERAL" >pkg-config --cflags --libs gtk+-2.0</TT >.</P ><P >Note that the type of single quote used in the compile command above is significant.</P ><P >The libraries that are usually linked in are:</P ><P ></P ><UL ><LI ><P >The GTK library (<TT CLASS="LITERAL" >-lgtk</TT >), the widget library, based on top of GDK.</P ></LI ><LI ><P >The GDK library (<TT CLASS="LITERAL" >-lgdk</TT >), the Xlib wrapper.</P ></LI ><LI ><P >The gdk-pixbuf library (<TT CLASS="LITERAL" >-lgdk_pixbuf</TT >), the image manipulation library.</P ></LI ><LI ><P >The Pango library (<TT CLASS="LITERAL" >-lpango</TT >) for internationalized text.</P ></LI ><LI ><P >The gobject library (<TT CLASS="LITERAL" >-lgobject</TT >), containing the type system on which GTK is based.</P ></LI ><LI ><P >The gmodule library (<TT CLASS="LITERAL" >-lgmodule</TT >), which is used to load run time extensions.</P ></LI ><LI ><P >The GLib library (<TT CLASS="LITERAL" >-lglib</TT >), containing miscellaneous functions; only g_print() is used in this particular example. GTK is built on top of GLib so you will always require this library. See the section on <A HREF="c2023.html" >GLib</A > for details.</P ></LI ><LI ><P >The Xlib library (<TT CLASS="LITERAL" >-lX11</TT >) which is used by GDK.</P ></LI ><LI ><P >The Xext library (<TT CLASS="LITERAL" >-lXext</TT >). This contains code for shared memory pixmaps and other X extensions.</P ></LI ><LI ><P >The math library (<TT CLASS="LITERAL" >-lm</TT >). This is used by GTK for various purposes.</P ></LI ></UL ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="c39.html" ACCESSKEY="P" ><<< Previous</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="book1.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="x159.html" ACCESSKEY="N" >Next >>></A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Getting Started</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="c39.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Theory of Signals and Callbacks</TD ></TR ></TABLE ></DIV ></BODY ></HTML >
