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 += fds_example 8hostprogs-y += sockex1 9hostprogs-y += sockex2 10hostprogs-y += sockex3 11hostprogs-y += tracex1 12hostprogs-y += tracex2 13hostprogs-y += tracex3 14hostprogs-y += tracex4 15hostprogs-y += tracex5 16hostprogs-y += tracex6 17hostprogs-y += trace_output 18hostprogs-y += lathist 19hostprogs-y += offwaketime 20 21test_verifier-objs := test_verifier.o libbpf.o 22test_maps-objs := test_maps.o libbpf.o 23sock_example-objs := sock_example.o libbpf.o 24fds_example-objs := bpf_load.o libbpf.o fds_example.o 25sockex1-objs := bpf_load.o libbpf.o sockex1_user.o 26sockex2-objs := bpf_load.o libbpf.o sockex2_user.o 27sockex3-objs := bpf_load.o libbpf.o sockex3_user.o 28tracex1-objs := bpf_load.o libbpf.o tracex1_user.o 29tracex2-objs := bpf_load.o libbpf.o tracex2_user.o 30tracex3-objs := bpf_load.o libbpf.o tracex3_user.o 31tracex4-objs := bpf_load.o libbpf.o tracex4_user.o 32tracex5-objs := bpf_load.o libbpf.o tracex5_user.o 33tracex6-objs := bpf_load.o libbpf.o tracex6_user.o 34trace_output-objs := bpf_load.o libbpf.o trace_output_user.o 35lathist-objs := bpf_load.o libbpf.o lathist_user.o 36offwaketime-objs := bpf_load.o libbpf.o offwaketime_user.o 37 38# Tell kbuild to always build the programs 39always := $(hostprogs-y) 40always += sockex1_kern.o 41always += sockex2_kern.o 42always += sockex3_kern.o 43always += tracex1_kern.o 44always += tracex2_kern.o 45always += tracex3_kern.o 46always += tracex4_kern.o 47always += tracex5_kern.o 48always += tracex6_kern.o 49always += trace_output_kern.o 50always += tcbpf1_kern.o 51always += lathist_kern.o 52always += offwaketime_kern.o 53 54HOSTCFLAGS += -I$(objtree)/usr/include 55 56HOSTCFLAGS_bpf_load.o += -I$(objtree)/usr/include -Wno-unused-variable 57HOSTLOADLIBES_fds_example += -lelf 58HOSTLOADLIBES_sockex1 += -lelf 59HOSTLOADLIBES_sockex2 += -lelf 60HOSTLOADLIBES_sockex3 += -lelf 61HOSTLOADLIBES_tracex1 += -lelf 62HOSTLOADLIBES_tracex2 += -lelf 63HOSTLOADLIBES_tracex3 += -lelf 64HOSTLOADLIBES_tracex4 += -lelf -lrt 65HOSTLOADLIBES_tracex5 += -lelf 66HOSTLOADLIBES_tracex6 += -lelf 67HOSTLOADLIBES_trace_output += -lelf -lrt 68HOSTLOADLIBES_lathist += -lelf 69HOSTLOADLIBES_offwaketime += -lelf 70 71# point this to your LLVM backend with bpf support 72LLC=$(srctree)/tools/bpf/llvm/bld/Debug+Asserts/bin/llc 73 74# asm/sysreg.h inline assmbly used by it is incompatible with llvm. 75# But, ehere is not easy way to fix it, so just exclude it since it is 76# useless for BPF samples. 77$(obj)/%.o: $(src)/%.c 78 clang $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(EXTRA_CFLAGS) \ 79 -D__KERNEL__ -D__ASM_SYSREG_H -Wno-unused-value -Wno-pointer-sign \ 80 -O2 -emit-llvm -c $< -o -| $(LLC) -march=bpf -filetype=obj -o $@ 81 clang $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(EXTRA_CFLAGS) \ 82 -D__KERNEL__ -D__ASM_SYSREG_H -Wno-unused-value -Wno-pointer-sign \ 83 -O2 -emit-llvm -c $< -o -| $(LLC) -march=bpf -filetype=asm -o $@.s 84