makefile: Clean up compiler flags
diff --git a/src/Makefile.am b/src/Makefile.am
index 8c48eeb..f006891 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,12 +1,8 @@
-AM_CPPFLAGS = $(SYSTEMD_CFLAGS) $(CODE_COVERAGE_CPPFLAGS)
-AM_CFLAGS = $(CODE_COVERAGE_CFLAGS)
-AM_CXXFLAGS = $(CODE_COVERAGE_CXXFLAGS)
-
nobase_include_HEADERS =
pkgconfig_DATA = sdeventplus.pc
lib_LTLIBRARIES = libsdeventplus.la
libsdeventplus_la_SOURCES =
-libsdeventplus_la_LIBADD = $(SYSTEMD_LIBS) $(CODE_COVERAGE_LIBS)
+libsdeventplus_la_LIBADD = $(COMMON_LIBS)
nobase_include_HEADERS += sdeventplus/event.hpp
libsdeventplus_la_SOURCES += sdeventplus/event.cpp