Add build rule for build-octave (bug #49503). * src/build-octave.mk: Add new build rule for build-octave which can be used for cross-building binary packages that depend on Octave as a build tool. * dist-files.mk: Add new file to list. * index.html: Add new package to list. * src/of-communications.mk, src/of-image.mk, src/of-mapping.mk, src/of-optiminterp.mk, src/of-sparsersb.mk, src/of-statistics.mk, src/of-windows.mk: Add optional dependency on build-octave. * configure.ac: Add new configure switch "--disable-system-octave" that is needed to build the build-octave package. * Makefile.in: Add variable "USE_SYSTEM_OCTAVE". Exclude build-octave from the default build tools and build it only if a package explicitly depends on it. Display warning about missing native Octave version only if necessary.

This file is part of MXE. See LICENSE.md for licensing information.

Contains ad hoc patches for cross building.

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: darealshinji <djcj@gmx.de>
Date: Fri, 25 May 2018 01:21:03 +0200
Subject: [PATCH 1/1] enable DLL builds


diff --git a/lib/Makefile.am b/lib/Makefile.am
index 1111111..2222222 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -1,7 +1,7 @@
 
 lib_LTLIBRARIES = libpaper.la
 libpaper_la_SOURCES = dimen.c paper.c dimen.h paperspecs.h
-libpaper_la_LDFLAGS = -version-info 2:2:1
+libpaper_la_LDFLAGS = -no-undefined -version-info 2:2:1
 libpaper_la_CPPFLAGS = -D_REENTRANT
 
 BUILT_SOURCES = paperspecs.h