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>Building</TITLE
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><H1
><A
NAME="CONFIG-TOOL-BUILDING">Chapter 21. Building</H1
><DIV
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><DL
><DT
><B
>Table of Contents</B
></DT
><DT
><A
HREF="config-tool-building.html#CONFIG-TOOL-SELECTING-BUILD-TOOLS"
>Selecting Build Tools</A
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>Selecting User Tools</A
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><P
>When you have configured <SPAN
CLASS="PRODUCTNAME"
>eCos</SPAN
>, you may build the configuration.</P
><P
>On the <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Build</I
></SPAN
> menu, click:</P
><P
></P
><UL
><LI
><P
>
<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Library</I
></SPAN
>
(or click the Build Library icon on the toolbar) – this
causes the <SPAN
CLASS="PRODUCTNAME"
>eCos</SPAN
> configuration to be built. The result of a successful
build will be (among other things) a library against which user
code can be linked</P
></LI
><LI
><P
>
<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Tests</I
></SPAN
>
– this causes the <SPAN
CLASS="PRODUCTNAME"
>eCos</SPAN
> configuration to be built, and
additionally builds the relevant test cases linked against the <SPAN
CLASS="PRODUCTNAME"
>eCos</SPAN
> library</P
></LI
><LI
><P
>
<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Clean</I
></SPAN
>
– this removes all intermediate files, thus causing a
subsequent build/library or build/tests operation
to cause recompilation of all relevant files.</P
></LI
><LI
><P
>
<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Stop</I
></SPAN
>
– this causes a currently executing build (any of the
above steps) to be interrupted</P
></LI
></UL
><P
>Build options may be displayed by using the <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Build->Options</I
></SPAN
> menu
item. This displays a dialog box containing a drop-list control
and two windows. The drop-list control allows you to select the
type of build option to be displayed (for example “LDFLAGS” are
the options applied at link-time. The left-hand window is a tree
view of the packages loaded in the current configuration. The right-hand
window is a list of the build options that will be used for the
currently selected package.</P
><P
>Note that this dialog box currently affords only read-only
access to the build options. In order to change build options you
must edit the relevant string configuration item.</P
><P
>A single level of inheritance is supported: each package’s
build options are combined with the global options (these are to
be found in the “Global build options” folder
in the configuration view).</P
><P
><P
><IMG
SRC="pix/buildoptions.png"></P
></P
><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="CONFIG-TOOL-SELECTING-BUILD-TOOLS">Selecting Build Tools</H1
><P
>Normally the installation process will supply the information
required for the <SPAN
CLASS="PRODUCTNAME"
>eCos</SPAN
><SPAN
CLASS="APPLICATION"
>Configuration Tool</SPAN
> to
locate the build tools (compiler, linker, etc.) necessary
to perform a build. However if this information is not registered,
or it is necessary to specify the location manually (for example,
when a new toolchain installation has been made), select <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Tools</I
></SPAN
>-><SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Paths</I
></SPAN
>-><SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>Build
Tools</I
></SPAN
>. The following dialog box will be displayed:</P
><DIV
CLASS="FIGURE"
><A
NAME="AEN1519"><P
><B
>Figure 21-1. Build tools</B
></P
><P
><IMG
SRC="pix/build-tools2.png"></P
></DIV
><P
>This dialog box allows you to locate the folder containing
the build tools. </P
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