Submit a patch
Unpack the latest tarball (download) which creates a tree with e.g. the top-level directory plplot-5.9.0
cp -a plplot-5.9.0 plplot-5.9.0new
Make your changes in the correct location in plplot-5.9.0new overwriting some of the files and adding new files in some cases. You should not compile anything in either plplot-5.9.0 or plplot-5.9.0new. That is, both should be clean directory trees. In order to test your changes make sure you configure plplot with CMake out-of-source. E.g.
cd plplot-5.9.0new mkdir build cd build cmake .. make
If you have made changes to the PLplot documentation, you should also check the validity of the documentation syntax:
This documentation validation does not require performing a full build of the PLplot documentation. Note that running the validation requires the "onsgmls" program to be present.
Remove the build directory after you tested your changes.
cd .. rm -rf build cd ..
To produce the patch from the two clean directory trees (don't forget to remove the CMake build directory) set up above do the following:
diff -Naur plplot-5.9.0 plplot-5.9.0new >plplot-5.9.0.patch
Please review plplot-5.9.0.patch to make sure those are the exact changes to the main tree that you require and nothing extra. Afterwards do the following:
Send plplot-5.9.0.patch.gz (the file created by gzip) to the the devel list.