tools/testing/selftests/bpf/Makefile

   1 # SPDX-License-Identifier: GPL-2.0
   2
   3 LIBDIR := ../../../lib
   4 BPFDIR := $(LIBDIR)/bpf
   5 APIDIR := ../../../include/uapi
   6 GENDIR := ../../../../include/generated
   7 GENHDR := $(GENDIR)/autoconf.h
   8
   9 ifneq ($(wildcard $(GENHDR)),)
  10   GENFLAGS := -DHAVE_GENHDR
  11 endif
  12
  13 CFLAGS += -Wall -O2 -I$(APIDIR) -I$(LIBDIR) -I$(GENDIR) $(GENFLAGS) -I../../../include
  14 LDLIBS += -lcap -lelf -lrt -lpthread
  15
  16 # Order correspond to 'make run_tests' order
  17 TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \
  18         test_align test_verifier_log test_dev_cgroup test_tcpbpf_user
  19
  20 TEST_GEN_FILES = test_pkt_access.o test_xdp.o test_l4lb.o test_tcp_estats.o test_obj_id.o \
  21         test_pkt_md_access.o test_xdp_redirect.o test_xdp_meta.o sockmap_parse_prog.o     \
  22         sockmap_verdict_prog.o dev_cgroup.o sample_ret0.o test_tracepoint.o \
  23         test_l4lb_noinline.o test_xdp_noinline.o test_stacktrace_map.o \
  24         sample_map_ret0.o test_tcpbpf_kern.o
  25
  26 # Order correspond to 'make run_tests' order
  27 TEST_PROGS := test_kmod.sh \
  28         test_libbpf.sh \
  29         test_xdp_redirect.sh \
  30         test_xdp_meta.sh \
  31         test_offload.py
  32
  33 # Compile but not part of 'make run_tests'
  34 TEST_GEN_PROGS_EXTENDED = test_libbpf_open
  35
  36 include ../lib.mk
  37
  38 BPFOBJ := $(OUTPUT)/libbpf.a cgroup_helpers.c
  39
  40 $(TEST_GEN_PROGS): $(BPFOBJ)
  41
  42 $(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/libbpf.a
  43
  44 .PHONY: force
  45
  46 # force a rebuild of BPFOBJ when its dependencies are updated
  47 force:
  48
  49 $(BPFOBJ): force
  50         $(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/
  51
  52 CLANG ?= clang
  53 LLC   ?= llc
  54
  55 PROBE := $(shell $(LLC) -march=bpf -mcpu=probe -filetype=null /dev/null 2>&1)
  56
  57 # Let newer LLVM versions transparently probe the kernel for availability
  58 # of full BPF instruction set.
  59 ifeq ($(PROBE),)
  60   CPU ?= probe
  61 else
  62   CPU ?= generic
  63 endif
  64
  65 CLANG_FLAGS = -I. -I./include/uapi -I../../../include/uapi \
  66               -Wno-compare-distinct-pointer-types
  67
  68 $(OUTPUT)/test_l4lb_noinline.o: CLANG_FLAGS += -fno-inline
  69 $(OUTPUT)/test_xdp_noinline.o: CLANG_FLAGS += -fno-inline
  70
  71 $(OUTPUT)/%.o: %.c
  72         $(CLANG) $(CLANG_FLAGS) \
  73                  -O2 -target bpf -emit-llvm -c $< -o - |      \
  74         $(LLC) -march=bpf -mcpu=$(CPU) -filetype=obj -o $@