ELDKRebuildingComponents < DULG

%SECTION0{name=ELDKRebuildingComponents}% Rebuilding ELDK Components
                                                                                                                                   
%SECTION1{name=ELDKSources}%  ELDK Source Distribution

The ELDK is distributed with the full sources of all the components,
so you may rebuild any ELDK package. The sources are provided in the
form of SRPM packages, distributed as a separate ISO image.
                                                                                
To rebuild a target or ELDT package, you must first install the
appropriate source RPM package from the ISO image into the ELDK
environment. This can be done using the following command:

<verbatim>
$ ${CROSS_COMPILE}rpm -i /mnt/cdrom/SRPMS/<source_rpm_file_name>.src.rpm
</verbatim>
                                                                                
After an ELDK source RPM is installed using the above command, its
spec file and sources can be found in the subdirectories of the
_&lt;ELDK_root&gt;/usr/src/denx_ subdirectory.

The sections that follow provide detailed instructions on rebuilding
ELDT and target components of the ELDK.

%SECTION1{name=ELDKRebuildTargetRpm}% Rebuilding Target Packages

All the target packages can be rebuilt
from the provided source RPM packages.
At first you have to install the Source RPM itself:
                                                                                
<verbatim>
bash$ ${CROSS_COMPILE}rpm -iv <package_name>.src.rpm
</verbatim>

Then you can rebuild the binary target RPM using the following command
from the ELDK environment:
                                                                                
<verbatim>
bash$ ${CROSS_COMPILE}rpmbuild -ba <package_name>.spec
</verbatim>
                                                                                
In order for the rebuilding process to work correctly, the following
conditions must be true:
                                                                                
   * The [[ELDKUsage#Table_CrossCompile][$CROSS_COMPILE]] environment variable
     must be set as appropriate for the target CPU family.

   * The %IF{ "%ARCHITECTURE%" eq "powerpc" }% _&lt;ELDK_root&gt;/usr/ppc-linux/bin_
     %ENDIF% %IF{ "%ARCHITECTURE%" eq "arm" }% _&lt;ELDK_root&gt;/usr/arm-linux/bin_
     %ENDIF% %IF{ "%ARCHITECTURE%" eq "mips" }% _&lt;ELDK_root&gt;/usr/mips-linux/bin_
     %ENDIF% directory must be in =PATH= before the
     _/usr/bin_ directory. This is to make sure that
     the command =gcc= results in the fact that the
     ELDK cross compiler is invoked, rather than the host
     =gcc=.

The newly built package can then be installed just as easily:

<verbatim>
bash$ ${CROSS_COMPILE}rpm -i <package_name>.rpm
</verbatim>

%SECTION1{name=ELDKRebuildToolRpm}% Rebuilding ELDT Packages

All the ELDT packages allow for rebuilding from the provided source
RPM packages using the following command from the ELDK environment:
                                                                                
<verbatim>
$ unset CROSS_COMPILE
$ <ELDK_root>/usr/bin/rpmbuild -ba <package_name.spec>
</verbatim>
                                                                                
In order for the rebuilding process to work correctly, make sure all of the following is
true:

   * The [[ELDKUsage#Table_CrossCompile][$CROSS_COMPILE]] environment variable
     must *NOT* be set.
 
   * Do *NOT* use the [[ELDKUsage#Table_CrossCompile][$CROSS_COMPILE]] command prefix.

   * The %IF{ "%ARCHITECTURE%" eq "powerpc" }% _&lt;ELDK_root&gt;/usr/ppc-linux/bin_
     %ENDIF% %IF{ "%ARCHITECTURE%" eq "arm" }% _&lt;ELDK_root&gt;/usr/arm-linux/bin_
     %ENDIF% %IF{ "%ARCHITECTURE%" eq "mips" }% _&lt;ELDK_root&gt;/usr/mips-linux/bin_
     %ENDIF% directory must *NOT* be in =PATH=. This is to make sure that the command
     =gcc= causes invokation of the host
     =gcc=, rather than the ELDK cross compiler.

Note that the newly built package should be installed with the "global" =rpm=,
not with the arch specific one:

<verbatim>
bash$ <ELDK_root>/bin/rpm -i <package_name>.rpm
</verbatim>
3.7. Mounting Target Components via NFS		1. Abstract		3.9. ELDK Packages
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