This seems somewhat related to the Kerberos problems in earlier threads, but I'm getting this problem when I try to build CyrusIMAP: gcc -c -I.. -I./../lib -I../et -I./../sieve -I/usr/local/BerkeleyDB/include -I/usr/include -I/AppleInternal/Developer/Headers -DHAVE_CONFIG_H -DMAC_OS_X -DDHAVE_SSL -DUSE_SETPROCTITLE -DHAVE_STDARG_H -DHAVE_STRLCPY -DHAVE_STRLCAT -g -O2 -pipe -no-cpp-precomp -arch ppc \ quota_db.c gcc -c -I.. -I./../lib -I../et -I./../sieve -I/usr/local/BerkeleyDB/include -I/usr/include -I/AppleInternal/Developer/Headers -DHAVE_CONFIG_H -DMAC_OS_X -DDHAVE_SSL -DUSE_SETPROCTITLE -DHAVE_STDARG_H -DHAVE_STRLCPY -DHAVE_STRLCAT -g -O2 -pipe -no-cpp-precomp -arch ppc \ AppleOD.c AppleOD.c: In function `checkServiceACL': AppleOD.c:1009: error: `ENOENT' undeclared (first use in this function) AppleOD.c:1009: error: (Each undeclared identifier is reported only once AppleOD.c:1009: error: for each function it appears in.) AppleOD.c: In function `sGSS_Init': AppleOD.c:2163: warning: passing arg 3 of `gss_import_name' discards qualifiers from pointer target type make[2]: *** [AppleOD.o] Error 1 make[1]: *** [all] Error 1 make: *** [build_imap] Error 2 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ EXIT STATUS: 2 ENOENT would seem to be to be something pretty standard, so I'm not sure if there's just a header package I'm missing or something more insidious. :D I tried building xnu first, but that didn't help. Any help would be much appreciated, and thanks so much for putting this build system together, it's pretty sweet. -Sean.