made sure we don't try to build the library unless we enable the gtest

git-svn-id: svn://bind10.isc.org/svn/bind10/branches/trac448@4054 e5f2f494-b856-4b98-b285-d166d9295462

src/lib/testutils/Makefile.am

@@ -4,8 +4,10 @@ AM_CPPFLAGS = -I$(top_srcdir)/src/lib -I$(top_builddir)/src/lib
 AM_CPPFLAGS += $(BOOST_INCLUDES)
 AM_CXXFLAGS=$(B10_CXXFLAGS)
 
+if HAVE_GTEST
 lib_LTLIBRARIES = libtestutils.la
 
 libtestutils_la_SOURCES = srv_test.h srv_test.cc
 libtestutils_la_SOURCES += srv_unittest.h
 libtestutils_la_SOURCES += mockups.h
+endif