makefile: Clean up compiler flags
diff --git a/test/Makefile.am b/test/Makefile.am
index 7534c42..e899539 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -1,30 +1,28 @@
 @VALGRIND_CHECK_RULES@
 @CODE_COVERAGE_RULES@
 
-AM_CPPFLAGS = -I$(top_builddir)/src -I$(top_srcdir)/src \
-              $(GTEST_CFLAGS) $(GMOCK_CFLAGS) $(SYSTEMD_CFLAGS) \
-              $(CODE_COVERAGE_CPPFLAGS)
-AM_CFLAGS = $(CODE_COVERAGE_CFLAGS)
-AM_CXXFLAGS = $(CODE_COVERAGE_CXXFLAGS)
-test_ldadd = $(top_builddir)/src/libsdeventplus.la $(SYSTEMD_LIBS) \
-             $(CODE_COVERAGE_LIBS)
-gtest_ldadd = $(test_ldadd) $(GTEST_LIBS) $(GMOCK_LIBS) -lgmock_main
+gtest_cppflags = $(AM_CPPFLAGS) $(GTEST_CFLAGS) $(GMOCK_CFLAGS)
+gtest_ldadd = $(SDEVENTPLUS_LIBS) $(GTEST_LIBS) $(GMOCK_LIBS) -lgmock_main
 
 check_PROGRAMS =
 TESTS = $(check_PROGRAMS)
 
 check_PROGRAMS += event
 event_SOURCES = event.cpp
+event_CPPFLAGS = $(gtest_cppflags)
 event_LDADD = $(gtest_ldadd)
 
 check_PROGRAMS += exception
 exception_SOURCES = exception.cpp
+exception_CPPFLAGS = $(gtest_cppflags)
 exception_LDADD = $(gtest_ldadd)
 
 check_PROGRAMS += sdref
 sdref_SOURCES = sdref.cpp
+sdref_CPPFLAGS = $(gtest_cppflags)
 sdref_LDADD = $(gtest_ldadd)
 
 check_PROGRAMS += source
 source_SOURCES = source.cpp
+source_CPPFLAGS = $(gtest_cppflags)
 source_LDADD = $(gtest_ldadd)