I gave it another try with –Wno-portability and yes, I agree this is the better solution. I tried it before but it did not work. I think it might have been one of these nightly misspellings that gave me a hard time. I removed the AC_SUBST hack and added the flag as both of you suggested earlier and I will make a note in the README that non-GNU make users can replace the $(shell…) entry with either the hard coded value or just leave it blank. IMHO this too is not the nicest but for now a middle ground that is acceptable I also will add a comment into the Makefile.am to provide a possible solution - for people who don't read the README. Eventually I have to come up with a differernt more automated solution because I hate having to manually edit make files before I can compile. Thanks again, Oliver -- View this message in context: http://gnu-autoconf.7623.n7.nabble.com/Autoreconf-stops-with-non-POSIX-variable-name-tp18630p18657.html Sent from the Gnu - Autoconf - General mailing list archive at Nabble.com. _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx https://lists.gnu.org/mailman/listinfo/autoconf