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Installing Xerces-C

These instructions assume version 1.7 of xerces-c library. Prior versions (back to 1.52 inclusive) did not require some of the steps like editing util/Makefile and creating symbolic links to the include directories.

Trash.Main Steps

1. Download the software from http://xml.apache.org/xerces-c and click on Download in the left hand column. Choose the "Stable" folder and download the source package in tar.gz format (IPv6Suite currently works with the stable version xerces-c-src1_7_0.tar.gz and does not compile with any newer versions as DOM interface used has been deprecated by the Xerces devolopment team).
2. Choose a directory to extract the xerces-c sources. Say ~/lib.
3. Extract the sources into ~/lib with tar zxvf xerces-c-src1_7_0.tar.gz
4. cd ~/lib/xerces-c-src1_7_0.
5. pwd should show the full path to the current directory.
6. Add XERCESCROOT environment variable permanently to your start up script.
   • if your login shell is bash do this:
     • add this line to your .bashrc : export XERCESCROOT=<Path from previous step>
   • if your shell is tcsh do this:
     • add this line to your .cshrc : setenv XERCESCROOT <Path from previous step>
7. source ~/.bashrc or source ~/.cshrc
8. cd into the src/xercesc subdirectory of the $XERCESCROOT directory
9. Edit the Makefile.incl to build a version of Xerces-C lib that is compatible with OMNeT++. To do this, find the section marked LINUX specific options, and
   1. Remove -D_REENTRANT.
   2. OPTIONAL Add -UNDEBUG to build with assertion checking for debug builds
   3. UNECESSARY for 1.7 Add the -D__USE_UNIX98 to prevent compiler/linker errors.
10. sh ./runConfigure -r none -plinux -cgcc -xg++ -minmem -nfileonly -tnative We need to fix a problem before running the make: Edit util/Makefile to not build the NetAccessors by removing netaccessors from the all target on line 482. Also prepend a hash symbol (#) at line 488 which should look like
    ${MAKE} -C NetAccessors/$(NETACCESSORMODULE) $@
    or better yet delete it.
11. make
12. cd $XERCESCROOT/lib
13. Check that the shared library libxerces-c1_7_0.so exists.
14. ln -s libxerces-c1_7_0.so libxerces-c.so
15. cd $XERCESCROOT/include
16. ln -s xercesc/* .

Xerces-C v1.7 > Build Changes

• We will make a decision later either to upgrade our code to work with later editions of xerces-c or change the XML library e.g. libxml++ or xmlwrap (c++ wrappers around libxml2.