From: Paul Moore <paul@xxxxxxxxxxxxxx>
On a modern Rawhide system builds that include libbpf require libelf
as well to avoid the following linker errors:
# cc -g -O0 -Wall -D_GNU_SOURCE -DHAVE_BPF \
client.c ../bpf/bpf_common.c ../bpf/bpf_common.h -lbpf -o client
/usr/bin/ld: ... libbpf.so: undefined reference to `gelf_getshdr'
/usr/bin/ld: ... libbpf.so: undefined reference to `elf_rawdata'
/usr/bin/ld: ... libbpf.so: undefined reference to `elf_getscn'
/usr/bin/ld: ... libbpf.so: undefined reference to `elf_begin'
/usr/bin/ld: ... libbpf.so: undefined reference to `gelf_getrel'
/usr/bin/ld: ... libbpf.so: undefined reference to `elf_memory'
/usr/bin/ld: ... libbpf.so: undefined reference to `elf_end'
/usr/bin/ld: ... libbpf.so: undefined reference to `elf_strptr'
/usr/bin/ld: ... libbpf.so: undefined reference to `elf_nextscn'
/usr/bin/ld: ... libbpf.so: undefined reference to `gelf_getehdr'
/usr/bin/ld: ... libbpf.so: undefined reference to `elf_version'
/usr/bin/ld: ... libbpf.so: undefined reference to `elf_getdata'
/usr/bin/ld: ... libbpf.so: undefined reference to `gelf_getsym'
Signed-off-by: Paul Moore <paul@xxxxxxxxxxxxxx>
---
tests/binder/Makefile | 2 +-
tests/bpf/Makefile | 2 +-
tests/fdreceive/Makefile | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/tests/binder/Makefile b/tests/binder/Makefile
index e78ad16..8f3cc28 100644
--- a/tests/binder/Makefile
+++ b/tests/binder/Makefile
@@ -12,7 +12,7 @@ endif
ifneq (,$(findstring -DHAVE_BPF,$(CFLAGS)))
DEPS += ../bpf/bpf_common.c ../bpf/bpf_common.h
- LDLIBS += -lbpf
+ LDLIBS += -lelf -lbpf
endif
all: $(TARGETS)
diff --git a/tests/bpf/Makefile b/tests/bpf/Makefile
index 6fb230d..7b00b41 100644
--- a/tests/bpf/Makefile
+++ b/tests/bpf/Makefile
@@ -1,6 +1,6 @@
TARGETS = bpf_test
DEPS = bpf_common.c bpf_common.h
-LDLIBS += -lselinux -lbpf
+LDLIBS += -lselinux -lelf -lbpf
# export so that BPF_ENABLED entries get built correctly on local build
export CFLAGS += -DHAVE_BPF
diff --git a/tests/fdreceive/Makefile b/tests/fdreceive/Makefile
index 895f91c..cf57327 100644
--- a/tests/fdreceive/Makefile
+++ b/tests/fdreceive/Makefile
@@ -2,7 +2,7 @@ TARGETS = client server
ifneq (,$(findstring -DHAVE_BPF,$(CFLAGS)))
DEPS = ../bpf/bpf_common.c ../bpf/bpf_common.h
- LDLIBS += -lbpf
+ LDLIBS += -lelf -lbpf
endif
all: $(TARGETS)
