8a4217aacf
simd / no float stuff is centeralized here. Also centralise -ffreestanding since it is specified everywhere. This, along with a change to share/mk/bsd.cpu.mk to include -mno-avx2 in CFLAGS_NO_SIMD should fix building for newer machines (eg with CPUTYPE=haswell) where clang was generating avx2 instructions. Sponsored by: Netflix
52 lines
1.4 KiB
Makefile
52 lines
1.4 KiB
Makefile
# $FreeBSD$
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.include "defs.mk"
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.if !defined(__BOOT_MAKEFILE_INC__)
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__BOOT_MAKEFILE_INC__=${MFILE}
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CFLAGS+=-I${SASRC}
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SSP_CFLAGS=
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# Add in the no float / no SIMD stuff and announce we're freestanding
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CFLAGS+= -ffreestanding ${CFLAGS_NO_SIMD}
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.if ${MACHINE_CPUARCH} == "aarch64"
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CFLAGS+= -mgeneral-regs-only
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.else
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CFLAGS+= -msoft-float
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.endif
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.if ${MACHINE_CPUARCH} == "i386" || (${MACHINE_CPUARCH} == "amd64" && ${DO32:U0} == 1)
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CFLAGS+= -march=i386
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CFLAGS.gcc+= -mpreferred-stack-boundary=2
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.endif
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.if ${MACHINE_CPUARCH} == "arm"
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# Do not generate movt/movw, because the relocation fixup for them does not
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# translate to the -Bsymbolic -pie format required by self_reloc() in loader(8).
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# Also, the fpu is not available in a standalone environment.
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.if ${COMPILER_VERSION} < 30800
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CFLAGS.clang+= -mllvm -arm-use-movt=0
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.else
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CFLAGS.clang+= -mno-movt
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.endif
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CFLAGS.clang+= -mfpu=none
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.endif
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# The boot loader build uses dd status=none, where possible, for reproducible
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# build output (since performance varies from run to run). Trouble is that
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# option was recently (10.3) added to FreeBSD and is non-standard. Only use it
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# when this test succeeds rather than require dd to be a bootstrap tool.
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DD_NOSTATUS!=(dd status=none count=0 2> /dev/null && echo status=none) || true
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DD=dd ${DD_NOSTATUS}
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.if ${MK_LOADER_FORCE_LE} != "no"
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.if ${MACHINE_ARCH} == "powerpc64"
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CFLAGS+= -mlittle-endian
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.endif
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.endif
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.endif
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