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selftests/bpf: Fix building bpf selftests statically 

bpf selftests can no longer be built with CFLAGS=-static with
liburandom_read.so and its dependent target.

Filter out -static for liburandom_read.so and its dependent target.

When building statically, this leaves urandom_read relying on
system-wide shared libraries.

Signed-off-by: Yosry Ahmed <yosryahmed@google.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220514002115.1376033-1-yosryahmed@google.com
This commit is contained in:
Yosry Ahmed 2022-05-14 00:21:15 +00:00 committed by Andrii Nakryiko
parent ac6a65868a
commit 68084a1364
1 changed files with 4 additions and 2 deletions
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6
tools/testing/selftests/bpf/Makefile
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@ -168,13 +168,15 @@ $(OUTPUT)/%:%.c
$(call msg,BINARY,,$@)
$(Q)$(LINK.c) $^ $(LDLIBS) -o $@
# Filter out -static for liburandom_read.so and its dependent targets so that static builds
# do not fail. Static builds leave urandom_read relying on system-wide shared libraries.
$(OUTPUT)/liburandom_read.so: urandom_read_lib1.c urandom_read_lib2.c
$(call msg,LIB,,$@)
$(Q)$(CC) $(CFLAGS) -fPIC $(LDFLAGS) $^ $(LDLIBS) --shared -o $@
$(Q)$(CC) $(filter-out -static,$(CFLAGS) $(LDFLAGS)) $^ $(LDLIBS) -fPIC -shared -o $@
$(OUTPUT)/urandom_read: urandom_read.c urandom_read_aux.c $(OUTPUT)/liburandom_read.so
$(call msg,BINARY,,$@)
$(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.c,$^) \
$(Q)$(CC) $(filter-out -static,$(CFLAGS) $(LDFLAGS)) $(filter %.c,$^) \
liburandom_read.so $(LDLIBS) \
-Wl,-rpath=. -Wl,--build-id=sha1 -o $@