1# kbuild trick to avoid linker error. Can be omitted if a module is built. 2obj- := dummy.o 3 4# List of programs to build 5hostprogs-y := test_verifier test_maps 6hostprogs-y += sock_example 7hostprogs-y += sockex1 8hostprogs-y += sockex2 9hostprogs-y += sockex3 10hostprogs-y += tracex1 11hostprogs-y += tracex2 12hostprogs-y += tracex3 13hostprogs-y += tracex4 14hostprogs-y += tracex5 15 16test_verifier-objs := test_verifier.o libbpf.o 17test_maps-objs := test_maps.o libbpf.o 18sock_example-objs := sock_example.o libbpf.o 19sockex1-objs := bpf_load.o libbpf.o sockex1_user.o 20sockex2-objs := bpf_load.o libbpf.o sockex2_user.o 21sockex3-objs := bpf_load.o libbpf.o sockex3_user.o 22tracex1-objs := bpf_load.o libbpf.o tracex1_user.o 23tracex2-objs := bpf_load.o libbpf.o tracex2_user.o 24tracex3-objs := bpf_load.o libbpf.o tracex3_user.o 25tracex4-objs := bpf_load.o libbpf.o tracex4_user.o 26tracex5-objs := bpf_load.o libbpf.o tracex5_user.o 27 28# Tell kbuild to always build the programs 29always := $(hostprogs-y) 30always += sockex1_kern.o 31always += sockex2_kern.o 32always += sockex3_kern.o 33always += tracex1_kern.o 34always += tracex2_kern.o 35always += tracex3_kern.o 36always += tracex4_kern.o 37always += tracex5_kern.o 38always += tcbpf1_kern.o 39 40HOSTCFLAGS += -I$(objtree)/usr/include 41 42HOSTCFLAGS_bpf_load.o += -I$(objtree)/usr/include -Wno-unused-variable 43HOSTLOADLIBES_sockex1 += -lelf 44HOSTLOADLIBES_sockex2 += -lelf 45HOSTLOADLIBES_sockex3 += -lelf 46HOSTLOADLIBES_tracex1 += -lelf 47HOSTLOADLIBES_tracex2 += -lelf 48HOSTLOADLIBES_tracex3 += -lelf 49HOSTLOADLIBES_tracex4 += -lelf -lrt 50HOSTLOADLIBES_tracex5 += -lelf 51 52# point this to your LLVM backend with bpf support 53LLC=$(srctree)/tools/bpf/llvm/bld/Debug+Asserts/bin/llc 54 55$(obj)/%.o: $(src)/%.c 56 clang $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(EXTRA_CFLAGS) \ 57 -D__KERNEL__ -Wno-unused-value -Wno-pointer-sign \ 58 -O2 -emit-llvm -c $< -o -| $(LLC) -march=bpf -filetype=obj -o $@ 59