Rick, > Starting from a clean distribution: > > % ./configure CFLAGS=-std=c99 >configure.log 2>&1 > edit config.h: > % grep XOPEN config.h > #define _XOPEN_SOURCE 600 > % make > all.log 2>&1 > > Log files are attached. > > Same result if parser.y is modified as per prior email I don't have this problem with my current development version. Would you mind trying it? You can download it with this command: wget ftp://ftp.unidata.ucar.edu/pub/udunits/beta/udunits-2.2.27.15.tar.gz Please keep me apprised. Regards, Steve Emmerson Ticket Details =================== Ticket ID: OBJ-198091 Department: Support UDUNITS Priority: Normal Status: Closed =================== NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.