1207cda961
Originally, hack.c was compiled into a shard object with just -shared
-nostdlib. This assumed that ${CC} did not require any additional
flags for ABIs, cross-building, etc.
When kern.post.mk was created in r89509 by reducing duplication in
kernel Makefile.<arch> files, the -shared flag was moved into a
HACK_EXTRA_FLAGS variable so that sparc64 could override it with
-Wl,-shared. The sparc64 hack was removed in r111650, but
HACK_EXTRA_FLAGS was left in place. Over time, we have started
support toolchains that require flags to support alternate ABIs on
MIPS and PowerPC and started (ab)using HACK_EXTRA_FLAGS to set only
those flags.
I need to fix risc-v to pass -mno-relax to the hack.c build for lld in
llvm 10, and the patches to support cross-build from non-FreeBSD hosts
need to include -target for clang in CFLAGS for hack.c. Rather than
adding more hacks into HACK_EXTRA_FLAGS, just use the full set of
CFLAGS with hack.c.
Reviewed by: kib, arichardson
MFC after: 1 month
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D23362
83 lines
1.7 KiB
Makefile
83 lines
1.7 KiB
Makefile
# Makefile.powerpc -- with config changes.
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# Copyright 1990 W. Jolitz
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# from: @(#)Makefile.i386 7.1 5/10/91
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# $FreeBSD$
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#
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# Makefile for FreeBSD
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#
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# This makefile is constructed from a machine description:
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# config machineid
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# Most changes should be made in the machine description
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# /sys/powerpc/conf/``machineid''
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# after which you should do
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# config machineid
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# Generic makefile changes should be made in
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# /sys/conf/Makefile.powerpc
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# after which config should be rerun for all machines.
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#
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# Which version of config(8) is required.
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%VERSREQ= 600012
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STD8X16FONT?= iso
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.if !defined(S)
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.if exists(./@/.)
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S= ./@
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.else
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S= ../../..
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.endif
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.endif
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LDSCRIPT_NAME?= ldscript.${MACHINE_ARCH}
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.include "$S/conf/kern.pre.mk"
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INCLUDES+= -I$S/contrib/libfdt
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.if "${MACHINE_ARCH}" == "powerpcspe"
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# Force __SPE__, since the builtin will be removed later with -mno-spe
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CFLAGS.gcc+= -mabi=spe -D__SPE__
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CFLAGS.clang+= -mspe -D__SPE__ -m32
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.endif
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CFLAGS+= -msoft-float
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CFLAGS.gcc+= -Wa,-many
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# Apply compiler-specific DPAA exceptions.
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.if "${COMPILER_TYPE}" == "clang"
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DPAAWARNFLAGS += \
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-Wno-error=parentheses-equality \
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-Wno-error=self-assign \
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-Wno-error=incompatible-pointer-types-discards-qualifiers \
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-Wno-error=non-literal-null-conversion \
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-Wno-error=enum-conversion
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.elif "${COMPILER_TYPE}" == "gcc" && ${COMPILER_VERSION} >= 50200
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DPAAWARNFLAGS += \
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-Wno-error=redundant-decls \
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-Wno-error=int-in-bool-context
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.endif
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# Build position-independent kernel
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CFLAGS+= -fPIC
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LDFLAGS+= -pie
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.if !empty(DDB_ENABLED)
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CFLAGS+= -fno-omit-frame-pointer
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.endif
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%BEFORE_DEPEND
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%OBJS
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%FILES.c
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%FILES.s
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%FILES.m
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%CLEAN
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%RULES
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.include "$S/conf/kern.post.mk"
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