<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >I tried to compile a small Hello World of mine, but it failed. Any clue? [GTK 2.x]</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REL="HOME" TITLE="GTK+ FAQ" HREF="book1.html"><LINK REL="UP" TITLE="Development with GTK+: the begining" HREF="c377.html"><LINK REL="PREVIOUS" TITLE="How do I write security sensitive/SUID/SGID programs with GTK+? Is GTK+ secure? What's this GTK_MODULES security hole I heard about? [GTK 2.x]" HREF="x392.html"><LINK REL="NEXT" TITLE="What about using the make utility? [GTK 2.x]" HREF="x416.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+ FAQ</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="x392.html" ACCESSKEY="P" ><<< Previous</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >Development with GTK+: the begining</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="x416.html" ACCESSKEY="N" >Next >>></A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="AEN399" >I tried to compile a small <B CLASS="COMMAND" >Hello World</B > of mine, but it failed. Any clue? <I CLASS="EMPHASIS" >[GTK 2.x]</I ></A ></H1 ><P >Since you are good at coding, we will not deal with compile time errors here :)</P ><P >The classic command line to compile a GTK+ based program is</P ><P ><P CLASS="LITERALLAYOUT" ><TT CLASS="LITERAL" >gcc -o myprog [c files] `pkg-config gtk+-2.0 --cflags --libs`</TT ></P ></P ><P >You should notice the backquote character which is used in this command line. A common mistake when you start a GTK+ based development is to use quotes instead of backquotes. If you do so, the compiler will complain about an unknown file called <TT CLASS="FILENAME" >pkg-config gtk+-2.0 --cflags --libs</TT >. The text in backquotes is an instruction to your shell to substitute the output of executing this command into the commandline.</P ><P >The command line above ensures that:</P ><P ></P ><UL ><LI ><P >the correct C compiler flags will be used to compile the program (including the complete C header directory list)</P ></LI ><LI ><P >your program will be linked with the needed libraries.</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="x392.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="x416.html" ACCESSKEY="N" >Next >>></A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >How do I write security sensitive/SUID/SGID programs with GTK+? Is GTK+ secure? What's this GTK_MODULES security hole I heard about? <I CLASS="EMPHASIS" >[GTK 2.x]</I ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="c377.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >What about using the <B CLASS="COMMAND" >make</B > utility? <I CLASS="EMPHASIS" >[GTK 2.x]</I ></TD ></TR ></TABLE ></DIV ></BODY ></HTML >