34 lines
1.0 KiB
Makefile
34 lines
1.0 KiB
Makefile
# kbuild trick to avoid linker error. Can be omitted if a module is built.
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obj- := dummy.o
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# List of programs to build
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hostprogs-y := test_verifier test_maps
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hostprogs-y += sock_example
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hostprogs-y += sockex1
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hostprogs-y += sockex2
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test_verifier-objs := test_verifier.o libbpf.o
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test_maps-objs := test_maps.o libbpf.o
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sock_example-objs := sock_example.o libbpf.o
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sockex1-objs := bpf_load.o libbpf.o sockex1_user.o
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sockex2-objs := bpf_load.o libbpf.o sockex2_user.o
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# Tell kbuild to always build the programs
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always := $(hostprogs-y)
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always += sockex1_kern.o
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always += sockex2_kern.o
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HOSTCFLAGS += -I$(objtree)/usr/include
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HOSTCFLAGS_bpf_load.o += -I$(objtree)/usr/include -Wno-unused-variable
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HOSTLOADLIBES_sockex1 += -lelf
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HOSTLOADLIBES_sockex2 += -lelf
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# point this to your LLVM backend with bpf support
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LLC=$(srctree)/tools/bpf/llvm/bld/Debug+Asserts/bin/llc
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%.o: %.c
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clang $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(EXTRA_CFLAGS) \
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-D__KERNEL__ -Wno-unused-value -Wno-pointer-sign \
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-O2 -emit-llvm -c $< -o -| $(LLC) -march=bpf -filetype=obj -o $@
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