--- SConstruct.orig	2010-07-17 21:13:02.159103740 +1200
+++ SConstruct	2010-07-17 21:17:05.675102167 +1200
@@ -105,12 +105,16 @@
 ## The other two options control the way the linker creates a namespace
 ## for the dynamic library; check the man page for ld on a mac to see
 ## the details.
-if os.environ['SAGE64']=="yes":
-    # We want the debug and optimization flags, since debug symbols are so useful, etc.
-    print "64 bit mode"
-    env.Append( CFLAGS="-O2 -g -m64" )
-    env.Append( CXXFLAGS="-O2 -g -m64" )
-    env.Append( LINKFLAGS="-m64" )
+#if os.environ['SAGE64']=="yes":
+#    # We want the debug and optimization flags, since debug symbols are so useful, etc.
+#    print "64 bit mode"
+#    env.Append( CFLAGS="-O2 -g -m64" )
+#    env.Append( CXXFLAGS="-O2 -g -m64" )
+#    env.Append( LINKFLAGS="-m64" )
+
+env['CFLAGS'] = os.environ['CFLAGS']
+env['CXXFLAGS'] = os.environ['CXXFLAGS']
+env['LINKFLAGS'] = os.environ['LDFLAGS']+' -Wl,-soname,libcsage.so'
 
 if env['PLATFORM']=="darwin":
     env.Append( LINKFLAGS=" -single_module -flat_namespace -undefined dynamic_lookup" )