With Sun Studio 12 cc compiler you' won't get far on MonetDB's sources. I had to unset all flags. Just a FYI: /opt/sun/sunstudio12/bin/cc -DHAVE_CONFIG_H -I. -I/ufs/fabian/scratch/monetdb/stable/buildtools/burg -c gram.c "/ufs/fabian/scratch/monetdb/stable/buildtools/burg/zalloc.c", line 14: warning: statement not reached /opt/sun/sunstudio12/bin/cc -DHAVE_CONFIG_H -I. -I/ufs/fabian/scratch/monetdb/stable/common/src/gdk -I../.. -I/ufs/fabian/scratch/monetdb/stable/common/src/gdk -I../common -I/ufs/fabian/scratch/monetdb/stable/common/src/gdk/../common -DLIBGDK -g -D_REENTRANT -c gdk_bbp.c -KPIC -DPIC -o .libs/libbat_la-gdk_bbp.o "gdk_posix.h", line 102: warning: macro redefined: __USE_BSD "/ufs/fabian/scratch/monetdb/stable/common/src/gdk/gdk_bbp.mx", line 1497: identifier redeclared: unshare current : static function(int) returning void previous: function(int) returning int : "/usr/include/bits/sched.h", line 79 (The Linux installation is somewhere on volund (/tmp/Linux), and the CDROM is on my desk, if someone is interested.)