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From: Hilko Bengen <bengen@debian.org>
Date: Sun, 02 Dec 2018 23:26:03 +0000
Subject: libbpf: link shared object with libelf
libbpf.so needs to be linked against libelf to avoid missing symbols.
Signed-off-by: Hilko Bengen <bengen@debian.org>
---
Index: linux/tools/lib/bpf/Makefile
===================================================================
--- linux.orig/tools/lib/bpf/Makefile
+++ linux/tools/lib/bpf/Makefile
@@ -170,7 +170,7 @@ $(BPF_IN): force elfdep bpfdep
$(Q)$(MAKE) $(build)=libbpf
$(OUTPUT)libbpf.so.$(LIBBPF_VERSION): $(BPF_IN)
- $(QUIET_LINK)$(CC) --shared $^ -Wl,-soname,$(@F) -o $@
+ $(QUIET_LINK)$(CC) --shared $^ -lelf -Wl,-soname,$(@F) -o $@
$(OUTPUT)libbpf.a: $(BPF_IN)
$(QUIET_LINK)$(RM) $@; $(AR) rcs $@ $^
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