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 20hostprogs-y += spintest 21hostprogs-y += map_perf_test 22 23test_verifier-objs := test_verifier.o libbpf.o 24test_maps-objs := test_maps.o libbpf.o 25sock_example-objs := sock_example.o libbpf.o 26fds_example-objs := bpf_load.o libbpf.o fds_example.o 27sockex1-objs := bpf_load.o libbpf.o sockex1_user.o 28sockex2-objs := bpf_load.o libbpf.o sockex2_user.o 29sockex3-objs := bpf_load.o libbpf.o sockex3_user.o 30tracex1-objs := bpf_load.o libbpf.o tracex1_user.o 31tracex2-objs := bpf_load.o libbpf.o tracex2_user.o 32tracex3-objs := bpf_load.o libbpf.o tracex3_user.o 33tracex4-objs := bpf_load.o libbpf.o tracex4_user.o 34tracex5-objs := bpf_load.o libbpf.o tracex5_user.o 35tracex6-objs := bpf_load.o libbpf.o tracex6_user.o 36trace_output-objs := bpf_load.o libbpf.o trace_output_user.o 37lathist-objs := bpf_load.o libbpf.o lathist_user.o 38offwaketime-objs := bpf_load.o libbpf.o offwaketime_user.o 39spintest-objs := bpf_load.o libbpf.o spintest_user.o 40map_perf_test-objs := bpf_load.o libbpf.o map_perf_test_user.o 41 42# Tell kbuild to always build the programs 43always := $(hostprogs-y) 44always += sockex1_kern.o 45always += sockex2_kern.o 46always += sockex3_kern.o 47always += tracex1_kern.o 48always += tracex2_kern.o 49always += tracex3_kern.o 50always += tracex4_kern.o 51always += tracex5_kern.o 52always += tracex6_kern.o 53always += trace_output_kern.o 54always += tcbpf1_kern.o 55always += lathist_kern.o 56always += offwaketime_kern.o 57always += spintest_kern.o 58always += map_perf_test_kern.o 59 60HOSTCFLAGS += -I$(objtree)/usr/include 61 62HOSTCFLAGS_bpf_load.o += -I$(objtree)/usr/include -Wno-unused-variable 63HOSTLOADLIBES_fds_example += -lelf 64HOSTLOADLIBES_sockex1 += -lelf 65HOSTLOADLIBES_sockex2 += -lelf 66HOSTLOADLIBES_sockex3 += -lelf 67HOSTLOADLIBES_tracex1 += -lelf 68HOSTLOADLIBES_tracex2 += -lelf 69HOSTLOADLIBES_tracex3 += -lelf 70HOSTLOADLIBES_tracex4 += -lelf -lrt 71HOSTLOADLIBES_tracex5 += -lelf 72HOSTLOADLIBES_tracex6 += -lelf 73HOSTLOADLIBES_trace_output += -lelf -lrt 74HOSTLOADLIBES_lathist += -lelf 75HOSTLOADLIBES_offwaketime += -lelf 76HOSTLOADLIBES_spintest += -lelf 77HOSTLOADLIBES_map_perf_test += -lelf -lrt 78 79# point this to your LLVM backend with bpf support 80LLC=$(srctree)/tools/bpf/llvm/bld/Debug+Asserts/bin/llc 81 82# asm/sysreg.h inline assmbly used by it is incompatible with llvm. 83# But, ehere is not easy way to fix it, so just exclude it since it is 84# useless for BPF samples. 85$(obj)/%.o: $(src)/%.c 86 clang $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(EXTRA_CFLAGS) \ 87 -D__KERNEL__ -D__ASM_SYSREG_H -Wno-unused-value -Wno-pointer-sign \ 88 -O2 -emit-llvm -c $< -o -| $(LLC) -march=bpf -filetype=obj -o $@ 89 clang $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(EXTRA_CFLAGS) \ 90 -D__KERNEL__ -D__ASM_SYSREG_H -Wno-unused-value -Wno-pointer-sign \ 91 -O2 -emit-llvm -c $< -o -| $(LLC) -march=bpf -filetype=asm -o $@.s 92