tests: Tweak cputest_LDADDS

We want all test programs using qemu_LDADDS to also use LDADDS,
and cputest is the only existing exception.

We can't just replace GNULIB_LIBS with LDADDS though, even though
the latter is a superset of the former, because that would result
in a linking error due to including the same object twice:

  /usr/bin/ld:
  ../src/libvirt_probes.o:.../src/libvirt_probes.o.dtrace-temp.c:141:
  multiple definition of `libvirt_object_new_semaphore';
  ../src/libvirt_probes.o:.../src/libvirt_probes.o.dtrace-temp.c:141:
  first defined here

To work around this, we include both qemu_LDADDS and LDADDS when
QEMU support is enabled, and just LDADDS otherwise.
Signed-off-by: NAndrea Bolognani <abologna@redhat.com>
Reviewed-by: NJim Fehlig <jfehlig@suse.com>

tests/Makefile.am

@@ -962,11 +962,13 @@ interfacexml2xmltest_LDADD = $(LDADDS)
 cputest_SOURCES = \
 	cputest.c \
 	testutils.c testutils.h
-cputest_LDADD = $(LDADDS) $(LIBXML_LIBS)
+cputest_LDADD = $(LIBXML_LIBS)
 if WITH_QEMU
 cputest_SOURCES += testutilsqemu.c testutilsqemu.h
-cputest_LDADD += libqemumonitortestutils.la $(qemu_LDADDS) $(GNULIB_LIBS)
-endif WITH_QEMU
+cputest_LDADD += libqemumonitortestutils.la $(qemu_LDADDS) $(LDADDS)
+else ! WITH_QEMU
+cputest_LDADD += $(LDADDS)
+endif ! WITH_QEMU
 
 metadatatest_SOURCES = \
 	metadatatest.c \