[4026] Fixed the path define

src/lib/dhcpsrv/tests/Makefile.am

@@ -5,6 +5,7 @@ AM_CPPFLAGS += $(BOOST_INCLUDES)
 AM_CPPFLAGS += -DTEST_DATA_BUILDDIR=\"$(abs_top_builddir)/src/lib/dhcpsrv/tests\"
 AM_CPPFLAGS += -DDHCP_DATA_DIR=\"$(abs_top_builddir)/src/lib/dhcpsrv/tests\"
 AM_CPPFLAGS += -DKEA_LFC_BUILD_DIR=\"$(abs_top_builddir)/src/bin/lfc\"
+AM_CPPFLAGS += -DLOGGING_SPEC_FILE=\"$(abs_top_srcdir)/src/lib/dhcpsrv/logging.spec\"
 AM_CPPFLAGS += -DINSTALL_PROG=\"$(abs_top_srcdir)/install-sh\"
 
 AM_CXXFLAGS = $(KEA_CXXFLAGS)

src/lib/dhcpsrv/tests/logging_unittest.cc

@@ -48,7 +48,7 @@ class LoggingTest : public ::testing::Test {
 
 // Tests that the spec file is valid.
 TEST_F(LoggingTest, basicSpec) {
-    std::string specfile = std::string(TEST_DATA_BUILDDIR) + "/../logging.spec";
+    std::string specfile = std::string(LOGGING_SPEC_FILE);
     ASSERT_NO_THROW(isc::config::moduleSpecFromFile(specfile));
 }