| Message ID | 20230121064128.67914-1-danieltimlee@gmail.com (mailing list archive) |
|---|---|
| State | Superseded |
| Delegated to: | BPF |
| Headers | show |
| Series | selftests/bpf: fix vmtest static compilation error | expand |
On 1/21/23 7:41 AM, Daniel T. Lee wrote: > As stated in README.rst, in order to resolve errors with linker errors, > 'LDLIBS=-static' should be used. Most problems will be solved by this > option, but in the case of urandom_read, this won't fix the problem. So > the Makefile is currently implemented to strip the 'static' option when > compiling the urandom_read. However, stripping this static option isn't > configured properly on $(LDLIBS) correctly, which is now causing errors > on static compilation. > > # LDLIBS=-static ./vmtest.sh > ld.lld: error: attempted static link of dynamic object liburandom_read.so > clang: error: linker command failed with exit code 1 (use -v to see invocation) > make: *** [Makefile:190: /linux/tools/testing/selftests/bpf/urandom_read] Error 1 > make: *** Waiting for unfinished jobs.... > > This commit fixes this problem by configuring the strip with $(LDLIBS). > > Fixes: 68084a136420 ("selftests/bpf: Fix building bpf selftests statically") > Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com> > --- > tools/testing/selftests/bpf/Makefile | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile > index 22533a18705e..7bd1ce9c8d87 100644 > --- a/tools/testing/selftests/bpf/Makefile > +++ b/tools/testing/selftests/bpf/Makefile > @@ -188,7 +188,7 @@ $(OUTPUT)/liburandom_read.so: urandom_read_lib1.c urandom_read_lib2.c > $(OUTPUT)/urandom_read: urandom_read.c urandom_read_aux.c $(OUTPUT)/liburandom_read.so > $(call msg,BINARY,,$@) > $(Q)$(CLANG) $(filter-out -static,$(CFLAGS) $(LDFLAGS)) $(filter %.c,$^) \ > - liburandom_read.so $(LDLIBS) \ > + liburandom_read.so $(filter-out -static,$(LDLIBS)) \ Do we need the same also for liburandom_read.so target's $(LDLIBS) further above? > -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \ > -Wl,-rpath=. -o $@ > >
On Wed, Jan 25, 2023 at 1:21 AM Daniel Borkmann <daniel@iogearbox.net> wrote: > > On 1/21/23 7:41 AM, Daniel T. Lee wrote: > > As stated in README.rst, in order to resolve errors with linker errors, > > 'LDLIBS=-static' should be used. Most problems will be solved by this > > option, but in the case of urandom_read, this won't fix the problem. So > > the Makefile is currently implemented to strip the 'static' option when > > compiling the urandom_read. However, stripping this static option isn't > > configured properly on $(LDLIBS) correctly, which is now causing errors > > on static compilation. > > > > # LDLIBS=-static ./vmtest.sh > > ld.lld: error: attempted static link of dynamic object liburandom_read.so > > clang: error: linker command failed with exit code 1 (use -v to see invocation) > > make: *** [Makefile:190: /linux/tools/testing/selftests/bpf/urandom_read] Error 1 > > make: *** Waiting for unfinished jobs.... > > > > This commit fixes this problem by configuring the strip with $(LDLIBS). > > > > Fixes: 68084a136420 ("selftests/bpf: Fix building bpf selftests statically") > > Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com> > > --- > > tools/testing/selftests/bpf/Makefile | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile > > index 22533a18705e..7bd1ce9c8d87 100644 > > --- a/tools/testing/selftests/bpf/Makefile > > +++ b/tools/testing/selftests/bpf/Makefile > > @@ -188,7 +188,7 @@ $(OUTPUT)/liburandom_read.so: urandom_read_lib1.c urandom_read_lib2.c > > $(OUTPUT)/urandom_read: urandom_read.c urandom_read_aux.c $(OUTPUT)/liburandom_read.so > > $(call msg,BINARY,,$@) > > $(Q)$(CLANG) $(filter-out -static,$(CFLAGS) $(LDFLAGS)) $(filter %.c,$^) \ > > - liburandom_read.so $(LDLIBS) \ > > + liburandom_read.so $(filter-out -static,$(LDLIBS)) \ > > Do we need the same also for liburandom_read.so target's $(LDLIBS) further above? > Oops, I didn't notice that. I'll apply the review and send the next version of patch! > > -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \ > > -Wl,-rpath=. -o $@ > > > > >
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index 22533a18705e..7bd1ce9c8d87 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -188,7 +188,7 @@ $(OUTPUT)/liburandom_read.so: urandom_read_lib1.c urandom_read_lib2.c $(OUTPUT)/urandom_read: urandom_read.c urandom_read_aux.c $(OUTPUT)/liburandom_read.so $(call msg,BINARY,,$@) $(Q)$(CLANG) $(filter-out -static,$(CFLAGS) $(LDFLAGS)) $(filter %.c,$^) \ - liburandom_read.so $(LDLIBS) \ + liburandom_read.so $(filter-out -static,$(LDLIBS)) \ -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \ -Wl,-rpath=. -o $@
As stated in README.rst, in order to resolve errors with linker errors, 'LDLIBS=-static' should be used. Most problems will be solved by this option, but in the case of urandom_read, this won't fix the problem. So the Makefile is currently implemented to strip the 'static' option when compiling the urandom_read. However, stripping this static option isn't configured properly on $(LDLIBS) correctly, which is now causing errors on static compilation. # LDLIBS=-static ./vmtest.sh ld.lld: error: attempted static link of dynamic object liburandom_read.so clang: error: linker command failed with exit code 1 (use -v to see invocation) make: *** [Makefile:190: /linux/tools/testing/selftests/bpf/urandom_read] Error 1 make: *** Waiting for unfinished jobs.... This commit fixes this problem by configuring the strip with $(LDLIBS). Fixes: 68084a136420 ("selftests/bpf: Fix building bpf selftests statically") Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com> --- tools/testing/selftests/bpf/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)