linux/samples/seccomp/Makefile
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   1# kbuild trick to avoid linker error. Can be omitted if a module is built.
   2obj- := dummy.o
   3
   4hostprogs-$(CONFIG_SECCOMP_FILTER) := bpf-fancy dropper bpf-direct
   5
   6HOSTCFLAGS_bpf-fancy.o += -I$(objtree)/usr/include
   7HOSTCFLAGS_bpf-fancy.o += -idirafter $(objtree)/include
   8HOSTCFLAGS_bpf-helper.o += -I$(objtree)/usr/include
   9HOSTCFLAGS_bpf-helper.o += -idirafter $(objtree)/include
  10bpf-fancy-objs := bpf-fancy.o bpf-helper.o
  11
  12HOSTCFLAGS_dropper.o += -I$(objtree)/usr/include
  13HOSTCFLAGS_dropper.o += -idirafter $(objtree)/include
  14dropper-objs := dropper.o
  15
  16HOSTCFLAGS_bpf-direct.o += -I$(objtree)/usr/include
  17HOSTCFLAGS_bpf-direct.o += -idirafter $(objtree)/include
  18bpf-direct-objs := bpf-direct.o
  19
  20# Try to match the kernel target.
  21ifndef CONFIG_64BIT
  22ifndef CROSS_COMPILE
  23
  24# s390 has -m31 flag to build 31 bit binaries
  25ifndef CONFIG_S390
  26MFLAG = -m32
  27else
  28MFLAG = -m31
  29endif
  30
  31HOSTCFLAGS_bpf-direct.o += $(MFLAG)
  32HOSTCFLAGS_dropper.o += $(MFLAG)
  33HOSTCFLAGS_bpf-helper.o += $(MFLAG)
  34HOSTCFLAGS_bpf-fancy.o += $(MFLAG)
  35HOSTLOADLIBES_bpf-direct += $(MFLAG)
  36HOSTLOADLIBES_bpf-fancy += $(MFLAG)
  37HOSTLOADLIBES_dropper += $(MFLAG)
  38endif
  39endif
  40
  41# Tell kbuild to always build the programs
  42always := $(hostprogs-y)
  43
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