Allows comedi_calibrate to be built without having libcomedi0 installed.
This is a patch to configure, a machine generated file. A better solution
without patching machine generated files would be preferable.
--- a/comedi-calibrate/configure
+++ b/comedi-calibrate/configure
@@ -5457,54 +5457,6 @@
 fi
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for comedi_open in -lcomedi" >&5
-$as_echo_n "checking for comedi_open in -lcomedi... " >&6; }
-if ${ac_cv_lib_comedi_comedi_open+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lcomedi  $LIBS"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-char comedi_open ();
-int
-main ()
-{
-return comedi_open ();
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ac_cv_lib_comedi_comedi_open=yes
-else
-  ac_cv_lib_comedi_comedi_open=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_comedi_comedi_open" >&5
-$as_echo "$ac_cv_lib_comedi_comedi_open" >&6; }
-if test "x$ac_cv_lib_comedi_comedi_open" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBCOMEDI 1
-_ACEOF
-
-  LIBS="-lcomedi $LIBS"
-
-else
-  as_fn_error $? "Failed to find libcomedi." "$LINENO" 5
-fi
-
-
 # GNU Scientific Library
 ac_fn_c_check_header_mongrel "$LINENO" "gsl/gsl_matrix.h" "ac_cv_header_gsl_gsl_matrix_h" "$ac_includes_default"
 if test "x$ac_cv_header_gsl_gsl_matrix_h" = xyes; then :