diff -ur cpl-5.2.0/configure cpl-5.2.0.new/configure
--- cpl-5.2.0/configure	2010-05-21 23:19:06.885131083 +0200
+++ cpl-5.2.0.new/configure	2010-05-21 23:23:24.546077917 +0200
@@ -13357,7 +13357,7 @@
 $as_echo_n "checking for wcs... " >&6; }
 
     cpl_wcs_check_header="wcslib/wcslib.h"
-    cpl_wcs_check_lib="libwcs.a"
+    cpl_wcs_check_lib="libwcs.so"
 
     cpl_wcs_includes=""
     cpl_wcs_libraries=""
@@ -13379,8 +13379,10 @@
         cpl_wcs_incdirs="$cpl_with_wcs_includes"
     fi
 
+    cpl_wcs_incdirs="$includedir"
     cpl_wcs_includes=no
 
+    cpl_wcs_libdirs="$libdir"
     for i in $cpl_wcs_incdirs; do
         for j in $cpl_wcs_check_header; do