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<page xmlns="http://projectmallard.org/1.0/" type="topic" style="task" id="project-manager-library" xml:lang="da">

  <info xmlns:facet="http://projectmallard.org/facet/1.0/">
    <facet:tag key="all-pages" value="whatever"/> <!--Include page in index-->
    <revision pkgversion="3.0" version="0.1" date="2011-03-27" status="incomplete"/>
    <desc>
      Add or remove non-packaged libraries from a project.
    </desc>
    <credit type="author">
      <name>Sébastien Granjoux</name>
      <email>seb.sfo@free.fr</email>
    </credit>
    <credit type="editor">
      <name>Philip Chimento</name>
      <email>philip.chimento@gmail.com</email>
    </credit>
  </info>

  <title>Add or remove non-packaged libraries</title>
 
  <section>
    <title>Add a non-packaged library to a target</title>

    <p>
      In order to use a library in C, you need to tell the compiler
      where the header files are, and tell the linker where to find the
      needed libraries. The issue is that your program will not compile
      on another computer if the header and the libraries are elsewhere.
    </p>

    <steps>
      <item>
        <p>
 	  Select the directory containing the program where you want to
          add the library in the <gui>project view</gui>, click on the
          right mouse button to make the <gui>project context menu</gui>
          appear and select <gui>Properties</gui>.
        </p>
        <p> 
          Or from the <gui>main menu</gui>, select <guiseq><gui>Project</gui>
          <gui>Properties</gui></guiseq>. By default, it edits the
          properties of the currently selected item in the project view.
          You can select a different node, by expanding
          <gui>Browse other nodes</gui> and selecting another one.
        </p>
      </item>
      <item>
        <p>
          If the header files are installed in a standard location
          (<file>/usr/include</file>) you don't have to set this. If not,
          you need to add <input>-I<var>include_path</var></input> in
          the <gui>C preprocessor flags</gui> property if you are using
          <app>gcc</app> as your compiler. You can add several paths separated with
          spaces. These options will be used for all targets inside this
          directory.
        </p>
        <p>
          You might have to expand the <gui>More options</gui> button to see this.
          Click on the <gui>Apply</gui> button when you are done.
        </p>
      </item>
      <item>
        <p>
	  Next, you need to add the library to a target.
 	  Select the target where you want to
          add the library in the <gui>project view</gui>, click on the
          right mouse button to make the <gui>project context menu</gui>
          appear and select <gui>Properties</gui>.
        </p>
        <p> 
          Or from the <gui>main menu</gui>, select <guiseq><gui>Project</gui>
          <gui>Properties</gui></guiseq>. By default, it edits the
          properties of the currently selected item in the project view.
          You can select a different node, by expanding
          <gui>Browse other nodes</gui> and selecting another one.
        </p>
      </item>
      <item>
        <p>
          You need to set the <gui>Linker flags</gui> property, adding
          <input>-l<var>library_name</var></input> if your compiler is <app>gcc</app>.
          <var>library_name</var> is the name of the library file without the
          <file>lib</file> prefix and without the <file>.a</file> or
          <file>.so</file> extension.
        </p>
        <p>
          If the library is in not in a standard directory, <app>gcc</app>
          can look in additional directories with the option
          <input>-L<var>library_path</var></input>.
        </p>  
      </item>
    </steps>
  </section>

  <section>
    <title>Remove a non packaged library from a target</title>

    <steps>
      <item>
        <p>
          Select the target that has the library you want to remove in the
          <gui>project view</gui>, click on the right mouse button to
          make the <gui>project context menu</gui> appear and select
          <gui>Properties</gui>.
        </p>
      </item>
      <item>
        <p>
	  Remove the library from the
          <gui>C preprocessor flags</gui> and <gui>Linker flags</gui>
          properties. Click on the <gui>Apply</gui> button to write the
          changes to the project files.
        </p>
      </item>
    </steps>

  </section>

</page>
