link core php with -lz for getimagesize()
see also http://bugs.php.net/bug.php?id=29611
+--- php-4.4.1/ext/zlib/config0.m4~ 2006-01-06 19:09:51.000000000 +0200
++++ php-4.4.1/ext/zlib/config0.m4 2006-01-06 19:09:52.000000000 +0200
+@@ -49,5 +49,6 @@
+ PHP_ZLIB_DIR=$ZLIB_DIR
+ PHP_ADD_LIBRARY(z,, ZLIB_SHARED_LIBADD)
+ PHP_ADD_INCLUDE($ZLIB_INCDIR)
++ EXTRA_LIBS="$EXTRA_LIBS $ZLIB_SHARED_LIBADD"
+
+ fi
--- php-4.4.1/ext/standard/image.c 2005-07-27 14:22:36.000000000 +0300
+++ /tmp/image.c 2006-01-06 19:14:00.000000000 +0200
@@ -31,7 +31,7 @@