diff -Nurd postgis-1.5.3/postgis/Makefile.in postgis-1.5.3-new/postgis/Makefile.in
--- postgis-1.5.3/postgis/Makefile.in	2010-01-08 17:48:29.000000000 -0500
+++ postgis-1.5.3-new/postgis/Makefile.in	2011-07-21 12:07:54.000000000 -0400
@@ -19,6 +19,7 @@
 
 # SQL objects (files requiring C pre-processing)
 SQL_OBJS=postgis.sql.in uninstall_postgis.sql.in
+SQL_CPP=$(CPP)
 
 # PostgreSQL objects
 PG_OBJS=lwgeom_pg.o \
@@ -68,8 +69,8 @@
 # to an existing liblwgeom.so in the PostgreSQL $libdir supplied by an
 # older version of PostGIS, rather than with the static liblwgeom.a 
 # supplied with newer versions of PostGIS
-PG_CPPFLAGS+=@CPPFLAGS@ -I../liblwgeom
-SHLIB_LINK+=@SHLIB_LINK@ ../liblwgeom/liblwgeom.a
+PG_CPPFLAGS+=@CPPFLAGS@ @PGSQL_FE_CPPFLAGS@ -I../liblwgeom
+SHLIB_LINK+=@SHLIB_LINK@ @PGSQL_FE_LDFLAGS@ ../liblwgeom/liblwgeom.a
 
 # Extra files to remove during 'make clean'
 EXTRA_CLEAN=$(SQL_OBJS)
@@ -116,5 +117,5 @@
 
 # Generate any .sql.in files from .sql.in.c files by running them through the C pre-processor 
 $(SQL_OBJS): %.in: %.in.c
-	$(CPP) -traditional-cpp $< | grep -v '^#' > $@
+	$(SQL_CPP) -traditional-cpp $< | grep -v '^#' > $@
 
diff -Nurd postgis-1.5.3/topology/Makefile.in postgis-1.5.3-new/topology/Makefile.in
--- postgis-1.5.3/topology/Makefile.in	2008-11-06 10:15:06.000000000 -0500
+++ postgis-1.5.3-new/topology/Makefile.in	2011-07-21 12:08:01.000000000 -0400
@@ -7,6 +7,7 @@
 
 # SQL objects (files requiring C pre-processing)
 SQL_OBJS=topology.sql.in
+SQL_CPP=$(CPP)
 
 # Extra files to remove during 'make clean'
 EXTRA_CLEAN=$(SQL_OBJS)
@@ -24,5 +25,5 @@
 
 # Generate any .sql.in files from .sql.in.c files by running them through the C pre-processor 
 $(SQL_OBJS): %.in: %.in.c
-	$(CPP) -traditional-cpp $< | grep -v '^#' > $@
+	$(SQL_CPP) -traditional-cpp $< | grep -v '^#' > $@