--- afflib-3.7.1/pyaff/Makefile.am
+++ afflib-3.7.1/pyaff/Makefile.am
@@ -7,8 +7,8 @@
 pyexec_LTLIBRARIES 	= pyaff.la
 
 pyaff_la_SOURCES	= pyaff.c
-pyaff_la_LIBADD		= ../lib/libafflib.la
+pyaff_la_LIBADD		= @top_builddir@/lib/libafflib.la
 pyaff_la_CPPFLAGS 	= $(PYTHON_CPPFLAGS)
-pyaff_la_CFLAGS                = -fno-strict-aliasing
-pyaff_la_LDFLAGS 	= -module -avoid-version $(PYTHON_LDFLAGS)
+pyaff_la_CFLAGS     = $(AM_CFLAGS) -shared -fno-strict-aliasing
+pyaff_la_LDFLAGS 	= -module -avoid-version -shared $(PYTHON_LDFLAGS)
 endif