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-rw-r--r--samples/bpf/Makefile17
1 files changed, 12 insertions, 5 deletions
diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile
index 9e255ca4059a..0dae77c88d2e 100644
--- a/samples/bpf/Makefile
+++ b/samples/bpf/Makefile
@@ -1,4 +1,8 @@
# SPDX-License-Identifier: GPL-2.0
+
+BPF_SAMPLES_PATH ?= $(abspath $(srctree)/$(src))
+TOOLS_PATH := $(BPF_SAMPLES_PATH)/../../tools
+
# List of programs to build
hostprogs-y := test_lru_dist
hostprogs-y += sock_example
@@ -49,7 +53,8 @@ hostprogs-y += xdpsock
hostprogs-y += xdp_fwd
# Libbpf dependencies
-LIBBPF := ../../tools/lib/bpf/libbpf.a
+LIBBPF = $(TOOLS_PATH)/lib/bpf/libbpf.a
+
CGROUP_HELPERS := ../../tools/testing/selftests/bpf/cgroup_helpers.o
TRACE_HELPERS := ../../tools/testing/selftests/bpf/trace_helpers.o
@@ -233,15 +238,16 @@ CLANG_ARCH_ARGS = -target $(ARCH)
endif
# Trick to allow make to be run from this directory
-all: $(LIBBPF)
- $(MAKE) -C ../../ $(CURDIR)/
+all:
+ $(MAKE) -C ../../ $(CURDIR)/ BPF_SAMPLES_PATH=$(CURDIR)
clean:
$(MAKE) -C ../../ M=$(CURDIR) clean
@rm -f *~
$(LIBBPF): FORCE
- $(MAKE) -C $(dir $@)
+# Fix up variables inherited from Kbuild that tools/ build system won't like
+ $(MAKE) -C $(dir $@) RM='rm -rf' LDFLAGS= srctree=$(BPF_SAMPLES_PATH)/../../ O=
$(obj)/syscall_nrs.s: $(src)/syscall_nrs.c
$(call if_changed_dep,cc_s_c)
@@ -272,7 +278,8 @@ verify_target_bpf: verify_cmds
exit 2; \
else true; fi
-$(src)/*.c: verify_target_bpf
+$(BPF_SAMPLES_PATH)/*.c: verify_target_bpf $(LIBBPF)
+$(src)/*.c: verify_target_bpf $(LIBBPF)
$(obj)/tracex5_kern.o: $(obj)/syscall_nrs.h