# HG changeset patch
# User Rik <rik@octave.org>
# Date 1347474995 25200
# Node ID 01c4f5d8a656a7839902fd3fcbf13e2058c99646
# Parent  4b82664f526b9bbd86e4cd7304d5a8dcf2bb306a
configure.ac: Cache results for QRUPDATE_LUU autoconf test.

* configure.ac: Cache results for QRUPDATE_LUU autoconf test.

diff --git a/configure.ac b/configure.ac
--- a/configure.ac
+++ b/configure.ac
@@ -1231,16 +1231,17 @@
   [Fortran 77], [don't use qrupdate, disable QR & Cholesky updating functions])
 
 if test "$octave_cv_lib_qrupdate" = yes; then
-  LIBS="$LIBS $QRUPDATE_LIBS"
-  AC_LANG_PUSH([Fortran 77])
-  AC_MSG_CHECKING([for slup1up in $QRUPDATE_LIBS])
-  octave_qrupdate_luu=no
-  AC_LINK_IFELSE([AC_LANG_CALL([], [slup1up])], [octave_qrupdate_luu=yes])
-  AC_MSG_RESULT([$octave_qrupdate_luu])
-  if test "$octave_qrupdate_luu" = yes; then
+  AC_CACHE_CHECK([for slup1up in $QRUPDATE_LIBS],
+    [octave_cv_func_slup1up],
+    [LIBS="$LIBS $QRUPDATE_LIBS"
+    AC_LANG_PUSH([Fortran 77])
+    AC_LINK_IFELSE([AC_LANG_CALL([], [slup1up])],
+      octave_cv_func_slup1up=yes, octave_cv_func_slup1up=no)
+    AC_LANG_POP([Fortran 77])
+  ])
+  if test $octave_cv_func_slup1up = yes; then
     AC_DEFINE(HAVE_QRUPDATE_LUU, 1, [Define to 1 if qrupdate supports LU updates.])
   fi
-  AC_LANG_POP([Fortran 77])
 fi
 LIBS="$save_LIBS"