%cc -v -static -DUNIX -O4  -o flops5.2gcc333staticDUNIXO4 flops.c
Using built-in specs.
Configured with: FreeBSD/i386 system compiler
Thread model: posix
gcc version 3.3.3 [FreeBSD] 20031106
 /usr/libexec/cc1 -quiet -v -D__GNUC__=3 -D__GNUC_MINOR__=3 -D__GNUC_PATCHLEVEL__=3 -D_LONGLONG -DUNIX flops.c -quiet -dumpbase flops.c -auxbase flops -O4 -version -o /var/tmp//ccsjeOjG.s
GNU C version 3.3.3 [FreeBSD] 20031106 (i386-undermydesk-freebsd)
        compiled by GNU C version 3.3.3 [FreeBSD] 20031106.
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
ignoring duplicate directory "/usr/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/include
End of search list.
flops.c:84:1: warning: "UNIX" redefined
<command line>:5:1: warning: this is the location of the previous definition
flops.c: In function `main':
flops.c:149: warning: return type of `main' is not `int'
 /usr/bin/as -v -o /var/tmp//ccwX1AQW.o /var/tmp//ccsjeOjG.s
GNU assembler version 2.13.2 [FreeBSD] 2002-11-27 (i386-obrien-freebsd5) using BFD version 2.13.2 [FreeBSD] 2002-11-27
 /usr/bin/ld -V -Bstatic -o flops5.2gcc333staticDUNIXO4 /usr/lib/crt1.o /usr/lib/crti.o /usr/lib/crtbegin.o -L/usr/lib /var/tmp//ccwX1AQW.o -lgcc -lc -lgcc /usr/lib/crtend.o /usr/lib/crtn.o
GNU ld version 2.13.2 [FreeBSD] 2002-11-27
  Supported emulations:
   elf_i386_fbsd