| # kbuild trick to avoid linker error. Can be omitted if a module is built. |
| obj- := dummy.o |
| |
| # List of programs to build |
| hostprogs-y := test_verifier test_maps |
| hostprogs-y += sock_example |
| hostprogs-y += fds_example |
| hostprogs-y += sockex1 |
| hostprogs-y += sockex2 |
| hostprogs-y += sockex3 |
| hostprogs-y += tracex1 |
| hostprogs-y += tracex2 |
| hostprogs-y += tracex3 |
| hostprogs-y += tracex4 |
| hostprogs-y += tracex5 |
| hostprogs-y += tracex6 |
| hostprogs-y += trace_output |
| hostprogs-y += lathist |
| hostprogs-y += offwaketime |
| hostprogs-y += spintest |
| hostprogs-y += map_perf_test |
| hostprogs-y += test_overhead |
| |
| test_verifier-objs := test_verifier.o libbpf.o |
| test_maps-objs := test_maps.o libbpf.o |
| sock_example-objs := sock_example.o libbpf.o |
| fds_example-objs := bpf_load.o libbpf.o fds_example.o |
| sockex1-objs := bpf_load.o libbpf.o sockex1_user.o |
| sockex2-objs := bpf_load.o libbpf.o sockex2_user.o |
| sockex3-objs := bpf_load.o libbpf.o sockex3_user.o |
| tracex1-objs := bpf_load.o libbpf.o tracex1_user.o |
| tracex2-objs := bpf_load.o libbpf.o tracex2_user.o |
| tracex3-objs := bpf_load.o libbpf.o tracex3_user.o |
| tracex4-objs := bpf_load.o libbpf.o tracex4_user.o |
| tracex5-objs := bpf_load.o libbpf.o tracex5_user.o |
| tracex6-objs := bpf_load.o libbpf.o tracex6_user.o |
| trace_output-objs := bpf_load.o libbpf.o trace_output_user.o |
| lathist-objs := bpf_load.o libbpf.o lathist_user.o |
| offwaketime-objs := bpf_load.o libbpf.o offwaketime_user.o |
| spintest-objs := bpf_load.o libbpf.o spintest_user.o |
| map_perf_test-objs := bpf_load.o libbpf.o map_perf_test_user.o |
| test_overhead-objs := bpf_load.o libbpf.o test_overhead_user.o |
| |
| # Tell kbuild to always build the programs |
| always := $(hostprogs-y) |
| always += sockex1_kern.o |
| always += sockex2_kern.o |
| always += sockex3_kern.o |
| always += tracex1_kern.o |
| always += tracex2_kern.o |
| always += tracex3_kern.o |
| always += tracex4_kern.o |
| always += tracex5_kern.o |
| always += tracex6_kern.o |
| always += trace_output_kern.o |
| always += tcbpf1_kern.o |
| always += lathist_kern.o |
| always += offwaketime_kern.o |
| always += spintest_kern.o |
| always += map_perf_test_kern.o |
| always += test_overhead_tp_kern.o |
| always += test_overhead_kprobe_kern.o |
| |
| HOSTCFLAGS += -I$(objtree)/usr/include |
| |
| HOSTCFLAGS_bpf_load.o += -I$(objtree)/usr/include -Wno-unused-variable |
| HOSTLOADLIBES_fds_example += -lelf |
| HOSTLOADLIBES_sockex1 += -lelf |
| HOSTLOADLIBES_sockex2 += -lelf |
| HOSTLOADLIBES_sockex3 += -lelf |
| HOSTLOADLIBES_tracex1 += -lelf |
| HOSTLOADLIBES_tracex2 += -lelf |
| HOSTLOADLIBES_tracex3 += -lelf |
| HOSTLOADLIBES_tracex4 += -lelf -lrt |
| HOSTLOADLIBES_tracex5 += -lelf |
| HOSTLOADLIBES_tracex6 += -lelf |
| HOSTLOADLIBES_trace_output += -lelf -lrt |
| HOSTLOADLIBES_lathist += -lelf |
| HOSTLOADLIBES_offwaketime += -lelf |
| HOSTLOADLIBES_spintest += -lelf |
| HOSTLOADLIBES_map_perf_test += -lelf -lrt |
| HOSTLOADLIBES_test_overhead += -lelf -lrt |
| |
| # Allows pointing LLC/CLANG to a LLVM backend with bpf support, redefine on cmdline: |
| # make samples/bpf/ LLC=~/git/llvm/build/bin/llc CLANG=~/git/llvm/build/bin/clang |
| LLC ?= llc |
| CLANG ?= clang |
| |
| # Trick to allow make to be run from this directory |
| all: |
| $(MAKE) -C ../../ $$PWD/ |
| |
| clean: |
| $(MAKE) -C ../../ M=$$PWD clean |
| @rm -f *~ |
| |
| # Verify LLVM compiler tools are available and bpf target is supported by llc |
| .PHONY: verify_cmds verify_target_bpf $(CLANG) $(LLC) |
| |
| verify_cmds: $(CLANG) $(LLC) |
| @for TOOL in $^ ; do \ |
| if ! (which -- "$${TOOL}" > /dev/null 2>&1); then \ |
| echo "*** ERROR: Cannot find LLVM tool $${TOOL}" ;\ |
| exit 1; \ |
| else true; fi; \ |
| done |
| |
| verify_target_bpf: verify_cmds |
| @if ! (${LLC} -march=bpf -mattr=help > /dev/null 2>&1); then \ |
| echo "*** ERROR: LLVM (${LLC}) does not support 'bpf' target" ;\ |
| echo " NOTICE: LLVM version >= 3.7.1 required" ;\ |
| exit 2; \ |
| else true; fi |
| |
| $(src)/*.c: verify_target_bpf |
| |
| # asm/sysreg.h - inline assembly used by it is incompatible with llvm. |
| # But, there is no easy way to fix it, so just exclude it since it is |
| # useless for BPF samples. |
| $(obj)/%.o: $(src)/%.c |
| $(CLANG) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(EXTRA_CFLAGS) \ |
| -D__KERNEL__ -D__ASM_SYSREG_H -Wno-unused-value -Wno-pointer-sign \ |
| -O2 -emit-llvm -c $< -o -| $(LLC) -march=bpf -filetype=obj -o $@ |