# cc -v -static -DUNIX -O4 -o flops4.9gcc295staticDUNIXO4 flops.c
Using builtin specs.
gcc version 2.95.4 20020320 [FreeBSD]
 /usr/libexec/cpp0 -lang-c -v -D__GNUC__=2 -D__GNUC_MINOR__=95 -Di386 -D__FreeBSD__=4 -D__FreeBSD_cc_version=460001 -Dunix -D__i386__ -D__FreeBSD__=4 -D__FreeBSD_cc_version=460001 -D__unix__ -D__i386 -D__unix -Acpu(i386) -Amachine(i386) -Asystem(unix) -Asystem(FreeBSD) -D__OPTIMIZE__ -Acpu(i386) -Amachine(i386) -Di386 -D__i386 -D__i386__ -D__ELF__ -DUNIX flops.c /tmp/ccIz5hhP.i
GNU CPP version 2.95.4 20020320 [FreeBSD] (i386 FreeBSD/ELF)
#include "..." search starts here:
#include <...> search starts here:
 /usr/include
 /usr/include
End of search list.
The following default directories have been omitted from the search path:
 /usr/include/g++
End of omitted list.
flops.c:84: warning: `UNIX' redefined
*Initialization*:1: warning: this is the location of the previous definition
 /usr/libexec/cc1 /tmp/ccIz5hhP.i -quiet -dumpbase flops.c -O4 -version -o /tmp/ccajxvtw.s
GNU C version 2.95.4 20020320 [FreeBSD] (i386-unknown-freebsd) compiled by GNU C version 2.95.4 20020320 [FreeBSD].
flops.c: In function `main':
flops.c:149: warning: return type of `main' is not `int'
 /usr/libexec/elf/as -v -o /tmp/cc26FEpU.o /tmp/ccajxvtw.s
GNU assembler version 2.12.1 [FreeBSD] 2002-07-20 (i386-obrien-freebsd5.0) using BFD version 2.12.1 [FreeBSD] 2002-07-20
 /usr/libexec/elf/ld -V -Bstatic -o flops4.9gcc295staticDUNIXO4 /usr/lib/crt1.o /usr/lib/crti.o /usr/lib/crtbegin.o -L/usr/lib /tmp/cc26FEpU.o -lgcc -lc -lgcc /usr/lib/crtend.o /usr/lib/crtn.o
GNU ld version 2.12.1 [FreeBSD] 2002-07-20
  Supported emulations:
   elf_i386