LXR linux/samples/bpf/Makefile

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