freebsd-dev/stand/Makefile.inc

# $FreeBSD$

.include "defs.mk"

.if !defined(__BOOT_MAKEFILE_INC__)
__BOOT_MAKEFILE_INC__=${MFILE}

CFLAGS+=-I${SASRC}

SSP_CFLAGS=

# Add in the no float / no SIMD stuff and announce we're freestanding
# aarch64 and riscv don't have -msoft-float, but all others do. riscv
# currently has no /boot/loader, but may soon.
CFLAGS+=	-ffreestanding ${CFLAGS_NO_SIMD}
.if ${MACHINE_CPUARCH} == "aarch64"
CFLAGS+=	-mgeneral-regs-only
.elif ${MACHINE_CPUARCH} != "riscv"
CFLAGS+=	-msoft-float
.endif

.if ${MACHINE_CPUARCH} == "i386" || (${MACHINE_CPUARCH} == "amd64" && ${DO32:U0} == 1)
CFLAGS+=	-march=i386
CFLAGS.gcc+=	-mpreferred-stack-boundary=2
.endif


.if ${MACHINE_CPUARCH} == "arm"
# Do not generate movt/movw, because the relocation fixup for them does not
# translate to the -Bsymbolic -pie format required by self_reloc() in loader(8).
# Also, the fpu is not available in a standalone environment.
.if ${COMPILER_VERSION} < 30800
CFLAGS.clang+=	-mllvm -arm-use-movt=0
.else
CFLAGS.clang+=	-mno-movt
.endif
CFLAGS.clang+=  -mfpu=none
.endif

# The boot loader build uses dd status=none, where possible, for reproducible
# build output (since performance varies from run to run). Trouble is that
# option was recently (10.3) added to FreeBSD and is non-standard. Only use it
# when this test succeeds rather than require dd to be a bootstrap tool.
DD_NOSTATUS!=(dd status=none count=0 2> /dev/null && echo status=none) || true
DD=dd ${DD_NOSTATUS}

.if ${MK_LOADER_FORCE_LE} != "no"
.if ${MACHINE_ARCH} == "powerpc64"
CFLAGS+=	-mlittle-endian
.endif
.endif

.endif