--- postgis/Makefile.in.orig	2012-09-05 19:20:48.000000000 +0400
+++ postgis/Makefile.in	2012-09-05 19:21:13.000000000 +0400
@@ -69,7 +69,7 @@
 # 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
+PG_CPPFLAGS+=-I../liblwgeom @CPPFLAGS@
 SHLIB_LINK+=@SHLIB_LINK@ ../liblwgeom/liblwgeom.a
 
 # Extra files to remove during 'make clean'