diff --git a/mlt-6.4.1-glibc-2.26.patch b/mlt-6.4.1-glibc-2.26.patch
new file mode 100644
index 0000000..94f4d01
--- /dev/null
+++ b/mlt-6.4.1-glibc-2.26.patch
@@ -0,0 +1,40 @@
+From 2125e3955a0d0be61571cf43b674f74b4b93c6f8 Mon Sep 17 00:00:00 2001
+From: Dan Dennedy <dan@dennedy.org>
+Date: Sat, 26 Aug 2017 18:31:47 -0700
+Subject: [PATCH] Fix #248 xlocale.h was removed in glibc 2.26.
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Reported by schnitzeltony on Andreas Müller.
+Patch by Dave Plater.
+---
+ src/framework/mlt_property.h | 8 ++++++--
+ 1 file changed, 6 insertions(+), 2 deletions(-)
+
+diff --git a/src/framework/mlt_property.h b/src/framework/mlt_property.h
+index 404d513f..043f530b 100644
+--- a/src/framework/mlt_property.h
++++ b/src/framework/mlt_property.h
+@@ -3,7 +3,7 @@
+  * \brief Property class declaration
+  * \see mlt_property_s
+  *
+- * Copyright (C) 2003-2014 Meltytech, LLC
++ * Copyright (C) 2003-2017 Meltytech, LLC
+  *
+  * This library is free software; you can redistribute it and/or
+  * modify it under the terms of the GNU Lesser General Public
+@@ -31,7 +31,11 @@
+ #endif
+ 
+ #if defined(__GLIBC__) || defined(__APPLE__) || (__FreeBSD_version >= 900506)
+-#include <xlocale.h>
++#  if __GLIBC_MINOR__ >= 26 && !defined(__APPLE__)
++#    include <locale.h>
++#  else
++#    include <xlocale.h>
++#  endif
+ #else
+ typedef char* locale_t;
+ #endif
diff --git a/mlt.spec b/mlt.spec
index 069157a..bf10b4c 100644
--- a/mlt.spec
+++ b/mlt.spec
@@ -1,6 +1,6 @@
 Name:          mlt
 Version:       6.4.1
-Release:       1mamba
+Release:       2mamba
 Summary:       An open source multimedia framework, designed and developed for television broadcasting
 Group:         Development/Tools
 Vendor:        openmamba
@@ -10,19 +10,22 @@ URL:           http://www.mltframework.org
 Source:        https://github.com/mltframework/mlt.git/v%{version}/mlt-%{version}.tar.bz2
 Patch0:        %{name}-0.3.0-sox1420.patch
 Patch1:        %{name}-0.3.8-ffmpeg-headers.patch
+Patch2:        mlt-6.4.1-glibc-2.26.patch
 License:       LGPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
 BuildRequires: libSDL-devel
 BuildRequires: libSDL_image-devel
 BuildRequires: libX11-devel
-BuildRequires: libalsa-devel
 BuildRequires: libavcodec-ffmpeg-devel
 BuildRequires: libavdevice-ffmpeg-devel
+BuildRequires: libavfilter-ffmpeg-devel
 BuildRequires: libavformat-ffmpeg-devel
 BuildRequires: libavutil-ffmpeg-devel
 BuildRequires: libcairo-devel
 BuildRequires: libexif-devel
+BuildRequires: libfftw-devel
+BuildRequires: libfontconfig-devel
 BuildRequires: libgcc
 BuildRequires: libgdk-pixbuf-devel
 BuildRequires: libglib-devel
@@ -30,6 +33,7 @@ BuildRequires: libgtk2-devel
 BuildRequires: libjack-devel
 BuildRequires: libpango-devel
 BuildRequires: libqt5-devel
+BuildRequires: librtaudio-devel
 BuildRequires: libsamplerate-devel
 BuildRequires: libstdc++6-devel
 BuildRequires: libswfdec-devel
@@ -59,8 +63,8 @@ MLT is an open source multimedia framework, designed and developed for televisio
 This package contains static files and headers used for development.
 
 %prep
-
 %setup -q
+%patch2 -p1
 
 %build
 export KDEDIR=%{kdedir}
@@ -103,6 +107,9 @@ CFLAGS="-I%{_includedir}/ffmpeg" %make
 %{_libdir}/libmlt++.so
 
 %changelog
+* Tue Oct 24 2017 Silvan Calarco <silvan.calarco@mambasoft.it> 6.4.1-2mamba
+- added patch to fix devel with glibc 2.26 (xlocale.h removed)
+
 * Wed Nov 16 2016 Automatic Build System <autodist@mambasoft.it> 6.4.1-1mamba
 - automatic version update by autodist