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diff -Naur HippoDraw-1.21.3.old/config/m4/bnv_have_qt.m4 HippoDraw-1.21.3/config/m4/bnv_have_qt.m4
--- HippoDraw-1.21.3.old/config/m4/bnv_have_qt.m4	2006-12-08 14:15:35.000000000 -0500
+++ HippoDraw-1.21.3/config/m4/bnv_have_qt.m4	2009-12-15 18:15:24.000000000 -0500
@@ -438,8 +438,8 @@
       bnv_save_CXXFLAGS="$CXXFLAGS"
       echo "Saved cxxflgs"
       CXXFLAGS="-I$bnv_qt_include_dir"
-      AC_TRY_LINK([#include <$qt_direct_test_header>],
-        $qt_direct_test_main,
+      AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <$qt_direct_test_header>]],
+        [[$qt_direct_test_main]])],
       [
         # Success.
         # We can link with no special library directory.
@@ -460,8 +460,8 @@
           echo "Non-critical error, please neglect the above." >&AC_FD_CC
           bnv_qt_lib=qt-gl
           LIBS="-l$bnv_qt_lib"
-          AC_TRY_LINK([#include <$qt_direct_test_header>],
-            $qt_direct_test_main,
+          AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <$qt_direct_test_header>]],
+            [[$qt_direct_test_main]])],
           [
             # Success.
             # We can link with no special library directory.
@@ -496,14 +496,12 @@
             done
             # Try with that one
             LIBS="-l$bnv_qt_libS"
-            AC_TRY_LINK([#include <$qt_direct_test_header>],
-              $qt_direct_test_main,
+            AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <$qt_direct_test_header>]],
+              [[$qt_direct_test_main]])],
             [
               # Success.
               # We can link with no special library directory.
               bnv_qt_lib_dir=
-            ], [
-              # Leave bnv_qt_lib_dir defined
             ])
           ])
         ])