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https://github.com/torvalds/linux
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77b894f220
"-mfunction-return=thunk -mindirect-branch-register" are only valid
for x86. So introduce compiler operation check to avoid such issues
Fixes: 0d0ed40061 ("tools/virtio: enable to build with retpoline")
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Message-Id: <20230323040024.3809108-1-peng.fan@oss.nxp.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
54 lines
1.9 KiB
Makefile
54 lines
1.9 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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all: test mod
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test: virtio_test vringh_test
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virtio_test: virtio_ring.o virtio_test.o
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vringh_test: vringh_test.o vringh.o virtio_ring.o
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try-run = $(shell set -e; \
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if ($(1)) >/dev/null 2>&1; \
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then echo "$(2)"; \
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else echo "$(3)"; \
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fi)
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__cc-option = $(call try-run,\
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$(1) -Werror $(2) -c -x c /dev/null -o /dev/null,$(2),)
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cc-option = $(call __cc-option, $(CC),$(1))
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CFLAGS += -g -O2 -Werror -Wno-maybe-uninitialized -Wall -I. -I../include/ -I ../../usr/include/ -Wno-pointer-sign -fno-strict-overflow -fno-strict-aliasing -fno-common -MMD -U_FORTIFY_SOURCE -include ../../include/linux/kconfig.h $(call cc-option,-mfunction-return=thunk) $(call cc-option,-fcf-protection=none) $(call cc-option,-mindirect-branch-register)
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CFLAGS += -pthread
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LDFLAGS += -pthread
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vpath %.c ../../drivers/virtio ../../drivers/vhost
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mod:
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${MAKE} -C `pwd`/../.. M=`pwd`/vhost_test V=${V}
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#oot: build vhost as an out of tree module for a distro kernel
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#no effort is taken to make it actually build or work, but tends to mostly work
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#if the distro kernel is very close to upstream
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#unsupported! this is a development tool only, don't use the
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#resulting modules in production!
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OOT_KSRC=/lib/modules/$$(uname -r)/build
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OOT_VHOST=`pwd`/../../drivers/vhost
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#Everyone depends on vhost
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#Tweak the below to enable more modules
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OOT_CONFIGS=\
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CONFIG_VHOST=m \
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CONFIG_VHOST_NET=n \
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CONFIG_VHOST_SCSI=n \
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CONFIG_VHOST_VSOCK=n \
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CONFIG_VHOST_RING=n
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OOT_BUILD=KCFLAGS="-I "${OOT_VHOST} ${MAKE} -C ${OOT_KSRC} V=${V}
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oot-build:
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echo "UNSUPPORTED! Don't use the resulting modules in production!"
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${OOT_BUILD} M=`pwd`/vhost_test
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${OOT_BUILD} M=${OOT_VHOST} ${OOT_CONFIGS}
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oot-clean: oot-build
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oot: oot-build
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oot-clean: OOT_BUILD+=clean
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.PHONY: all test mod clean vhost oot oot-clean oot-build
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clean:
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${RM} *.o vringh_test virtio_test vhost_test/*.o vhost_test/.*.cmd \
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vhost_test/Module.symvers vhost_test/modules.order *.d
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-include *.d
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