sys/boot/pc32/Makefile.inc

   1 # Common defines for all of /sys/boot/i386/
   2
   3 .if !target(__pc32__)
   4 __pc32__:
   5
   6 LOADER_ADDRESS?= 0x200000
   7 WORLD_CCOPTLEVEL=       1 # Force -O1, -O2 implodes
   8 CFLAGS+=        -ffreestanding
   9 CFLAGS+=        -mno-mmx -mno-3dnow -mno-sse -mno-sse2 -mno-sse3 -msoft-float
  10
  11 # override CPU type, so that gcc doesn't insert mmx/sse instructions
  12 FORCE_CPUTYPE=  i386
  13
  14 WARNS?= 2
  15
  16 # if a gcc compiler is being used, identify GCC-only flags,
  17 # otherwise check for clang and set value of ASSEMBLER_FLAGS if found
  18 .if ${CCVER:Mgcc*}
  19 CFLAGS+=                -mpreferred-stack-boundary=2
  20 BOOT2_GCC_FLAGS=        -fno-guess-branch-probability \
  21                         -fno-unit-at-a-time
  22 .elif ${CCVER:Mclang*}
  23 ASSEMBLER_FLAGS+=       -no-integrated-as
  24 .endif
  25
  26 .if defined(REALLY_X86_64)
  27 .include "../pc64/Makefile.inc"
  28 .endif
  29 .endif