[PATCH] selinux-testsuite: add libelf to builds using libbpf

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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)




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