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>Install Tree</TITLE
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><H1
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><A
NAME="INSTALL-TREE">Install Tree</H1
><P
>The <I
CLASS="FIRSTTERM"
>install tree</I
> is the location
	  for all files needed for application development. The
	  <TT
CLASS="FILENAME"
>libtarget.a</TT
> library, which contains the
	    custom-built <SPAN
CLASS="PRODUCTNAME"
>eCos</SPAN
> kernel and other components, is placed
	    in the install tree, along with all packages&#8217; public
	    header files. If you build the tests, the test executable
	    programs will also be placed in the install
	    tree. </P
><P
>By default, the install tree is created by
	  <B
CLASS="COMMAND"
>ecosconfig</B
> in a subdirectory of the build
	  tree called <TT
CLASS="FILENAME"
>install</TT
>. This can be
	  modified with the <TT
CLASS="OPTION"
>--prefix</TT
> option (see
	  <A
HREF="manual-configuration.html"
>Chapter 28</A
>).
	</P
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN2128">Purpose</H2
><P
>The install tree is where the custom-built
	    <TT
CLASS="FILENAME"
>libtarget.a</TT
> library, which contains
	    the <SPAN
CLASS="PRODUCTNAME"
>eCos</SPAN
> kernel and other components, is located. The
	    install tree is also the location for all the header files
	    that are part of a published interface for their
	    component. </P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN2133">How is it modified?</H2
><P
>Recompiling can replace
	    <TT
CLASS="FILENAME"
>libtarget.a</TT
> and the test
	    executables. </P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN2137">When is it edited manually?</H2
><P
>Where a memory layout requires modification without
	    use of the <SPAN
CLASS="PRODUCTNAME"
>eCos</SPAN
> <SPAN
CLASS="APPLICATION"
>Configuration Tool</SPAN
>, the memory layout
	    files must be edited directly in the install tree. These
	    files are located at
	    <TT
CLASS="FILENAME"
>install/include/pkgconf/mlt_*.*</TT
>. 
	    Note that subsequent modification of the install tree
	    using the Configuration Tool will result in such manual
	    edits being lost.</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN2143">User applications</H2
><P
>User application source or binary code should
	    <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>not</I
></SPAN
> go in the install tree. </P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN2147">Examples of files in this hierarchy</H2
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
><TT
CLASS="FILENAME"
>install/lib/libtarget.a</TT
></DT
><DD
><P
>The library containing the kernel and other components.</P
></DD
><DT
><TT
CLASS="FILENAME"
>install/include/cyg/kernel/kapi.h</TT
></DT
><DD
><P
>The header file for the kernel C language API.</P
></DD
><DT
><TT
CLASS="FILENAME"
>install/include/pkgconf/mlt_arm_pid_ram.ldi</TT
></DT
><DD
><P
>The linker script fragment describing the memory
		  layout for linking applications intended for
		  execution on an ARM PID development board using RAM
		  startup.</P
></DD
><DT
><TT
CLASS="FILENAME"
>install/include/stdio.h</TT
></DT
><DD
><P
>The C library header file for standard I/O. </P
></DD
></DL
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