Mark Hull-Richter a écrit :

I made a minor change to the XFS package (in the unpacked source files), but I can't figure out which rpmbuild option to use to build from that changed source file (instead of re-unpacking all the source files, overwriting all the source files, etc.).

Please assist/explain.

you'd better generate patch files instead of modifying directly source files: once generated, you store them in SOURCES/ directory and modify the .spec file to include them in the package generation.

good overview of RPM & spec file: http://www.gurulabs.com/GURULABS-RPM-LAB/GURULABS-RPM-GUIDE-v1.0.PDF

more complete informations about RPM and their generation: http://www.rpm.org/max-rpm/

From a mid/long-term perspective, it will be easier for you to manage it, especially if you also generate the .src.rpm source package file: it will contains your modify .spec file and also the patches you've created.

my $0.02

Pierre