samples/bpf/Makefile

   1 # kbuild trick to avoid linker error. Can be omitted if a module is built.
   2 obj- := dummy.o
   3
   4 # List of programs to build
   5 hostprogs-y := test_verifier test_maps
   6 hostprogs-y += sock_example
   7 hostprogs-y += fds_example
   8 hostprogs-y += sockex1
   9 hostprogs-y += sockex2
  10 hostprogs-y += sockex3
  11 hostprogs-y += tracex1
  12 hostprogs-y += tracex2
  13 hostprogs-y += tracex3
  14 hostprogs-y += tracex4
  15 hostprogs-y += tracex5
  16 hostprogs-y += tracex6
  17 hostprogs-y += trace_output
  18 hostprogs-y += lathist
  19 hostprogs-y += offwaketime
  20
  21 test_verifier-objs := test_verifier.o libbpf.o
  22 test_maps-objs := test_maps.o libbpf.o
  23 sock_example-objs := sock_example.o libbpf.o
  24 fds_example-objs := bpf_load.o libbpf.o fds_example.o
  25 sockex1-objs := bpf_load.o libbpf.o sockex1_user.o
  26 sockex2-objs := bpf_load.o libbpf.o sockex2_user.o
  27 sockex3-objs := bpf_load.o libbpf.o sockex3_user.o
  28 tracex1-objs := bpf_load.o libbpf.o tracex1_user.o
  29 tracex2-objs := bpf_load.o libbpf.o tracex2_user.o
  30 tracex3-objs := bpf_load.o libbpf.o tracex3_user.o
  31 tracex4-objs := bpf_load.o libbpf.o tracex4_user.o
  32 tracex5-objs := bpf_load.o libbpf.o tracex5_user.o
  33 tracex6-objs := bpf_load.o libbpf.o tracex6_user.o
  34 trace_output-objs := bpf_load.o libbpf.o trace_output_user.o
  35 lathist-objs := bpf_load.o libbpf.o lathist_user.o
  36 offwaketime-objs := bpf_load.o libbpf.o offwaketime_user.o
  37
  38 # Tell kbuild to always build the programs
  39 always := $(hostprogs-y)
  40 always += sockex1_kern.o
  41 always += sockex2_kern.o
  42 always += sockex3_kern.o
  43 always += tracex1_kern.o
  44 always += tracex2_kern.o
  45 always += tracex3_kern.o
  46 always += tracex4_kern.o
  47 always += tracex5_kern.o
  48 always += tracex6_kern.o
  49 always += trace_output_kern.o
  50 always += tcbpf1_kern.o
  51 always += lathist_kern.o
  52 always += offwaketime_kern.o
  53
  54 HOSTCFLAGS += -I$(objtree)/usr/include
  55
  56 HOSTCFLAGS_bpf_load.o += -I$(objtree)/usr/include -Wno-unused-variable
  57 HOSTLOADLIBES_fds_example += -lelf
  58 HOSTLOADLIBES_sockex1 += -lelf
  59 HOSTLOADLIBES_sockex2 += -lelf
  60 HOSTLOADLIBES_sockex3 += -lelf
  61 HOSTLOADLIBES_tracex1 += -lelf
  62 HOSTLOADLIBES_tracex2 += -lelf
  63 HOSTLOADLIBES_tracex3 += -lelf
  64 HOSTLOADLIBES_tracex4 += -lelf -lrt
  65 HOSTLOADLIBES_tracex5 += -lelf
  66 HOSTLOADLIBES_tracex6 += -lelf
  67 HOSTLOADLIBES_trace_output += -lelf -lrt
  68 HOSTLOADLIBES_lathist += -lelf
  69 HOSTLOADLIBES_offwaketime += -lelf
  70
  71 # point this to your LLVM backend with bpf support
  72 LLC=$(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