# HG changeset patch
# User Carnë Draug <carandraug@octave.org>
# Date 1372965025 -3600
# Node ID 55caca5268279d150b4ba1e3a715cf1f1fafe18f
# Parent  5314734810844711df65a5aa8d333ac4205e3c46
New function to error due to disabled feature during build.

* gripes.cc: add new function gripe_disabled_feature() to give an error
due to a feature that disabled when building Octave or an Octave package,
either optionally or due to a missing library.
* gripes.h: define gripe_disabled_feature() as external function.

diff -r 531473481084 -r 55caca526827 libinterp/corefcn/gripes.cc
--- a/libinterp/corefcn/gripes.cc	Thu Jul 04 20:33:02 2013 -0400
+++ b/libinterp/corefcn/gripes.cc	Thu Jul 04 20:10:25 2013 +0100
@@ -236,3 +236,11 @@
   warning_with_id ("Octave:matlab-incompatible",
                    "potential Matlab compatibility problem: comparing complex numbers");
 }
+
+void
+gripe_disabled_feature (const std::string& func, const std::string& feature,
+                        const std::string& pkg /*="Octave"*/)
+{
+  error ("%s: support for %s was disabled when %s was built",
+         func.c_str (), feature.c_str (), pkg.c_str ());
+}
diff -r 531473481084 -r 55caca526827 libinterp/corefcn/gripes.h
--- a/libinterp/corefcn/gripes.h	Thu Jul 04 20:33:02 2013 -0400
+++ b/libinterp/corefcn/gripes.h	Thu Jul 04 20:10:25 2013 +0100
@@ -127,4 +127,7 @@
 extern OCTINTERP_API void
 gripe_warn_complex_cmp (void);
 
+extern OCTINTERP_API void
+gripe_disabled_feature (const std::string& func, const std::string& feature,
+                        const std::string& pkg="Octave");
 #endif