diff --git a/gegl-0.4.18-arm.patch b/gegl-0.4.18-arm.patch
new file mode 100644
index 0000000..cefc9ce
--- /dev/null
+++ b/gegl-0.4.18-arm.patch
@@ -0,0 +1,11 @@
+--- gegl-0.4.18/meson.build.orig	2019-11-09 17:53:43.415651813 +0100
++++ gegl-0.4.18/meson.build	2019-11-09 17:53:53.834989898 +0100
+@@ -89,7 +89,7 @@
+   config.set10('ARCH_PPC',    true)
+   config.set10('ARCH_PPC64',  true)
+ else
+-  error('Unknown host architecture')
++  warning('Unknown host architecture')
+ endif
+ 
+ ################################################################################
diff --git a/libgegl.spec b/libgegl.spec
index 418bf1c..c86d960 100644
--- a/libgegl.spec
+++ b/libgegl.spec
@@ -2,7 +2,7 @@
 %define        apiver %{majver}
 
 Name:          libgegl
-Version:       0.4.16
+Version:       0.4.18
 Release:       1mamba
 Summary:       GEGL (Generic Graphics Library) is a graph based image processing framework.
 Group:         System/Libraries
@@ -10,54 +10,40 @@ Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Ercole 'ercolinux' Carpanetto <ercole69@gmail.com>
 URL:           http://gegl.org/
-Source:        http://download.gimp.org/pub/gegl/%{majver}/gegl-%{version}.tar.bz2
+Source:        http://download.gimp.org/pub/gegl/%{majver}/gegl-%{version}.tar.xz
 Patch0:        %{name}-0.1.8-fix_build.patch
 Patch1:        %{name}-0.1.8-ffmpeg.patch
 Patch2:        libgegl-0.2.0-liblua-5.2.patch
 Patch3:        libgegl-0.4.8-upstream-openexr-2.3.0.patch
+Patch4:        gegl-0.4.18-arm.patch
 License:       GPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
-BuildRequires: libSDL-devel
+BuildRequires: libSDL2-devel
+BuildRequires: libavcodec-ffmpeg-devel
+BuildRequires: libavformat-ffmpeg-devel
+BuildRequires: libavutil-ffmpeg-devel
 BuildRequires: libbabl-devel
-BuildRequires: libbzip2-devel
 BuildRequires: libcairo-devel
-BuildRequires: libcroco-devel
-BuildRequires: libexpat-devel
-BuildRequires: libffi-devel
-BuildRequires: libfontconfig-devel
-BuildRequires: libfreetype-devel
 BuildRequires: libgcc
 BuildRequires: libgdk-pixbuf-devel
 BuildRequires: libglib-devel
-BuildRequires: libgomp-devel
-BuildRequires: libgraphite2-devel
-BuildRequires: libharfbuzz-devel
-BuildRequires: libilmbase-devel
 BuildRequires: libjasper-devel
-BuildRequires: libjbig-devel
 BuildRequires: libjpeg-devel
 BuildRequires: libjson-glib-devel
 BuildRequires: liblcms2-devel
 BuildRequires: liblensfun-devel
-BuildRequires: liblua-devel
-BuildRequires: liblzma-devel
 BuildRequires: libopenexr-devel
 BuildRequires: libpango-devel
 BuildRequires: libpng-devel
 BuildRequires: libraw-devel
-BuildRequires: libreadline-devel
 BuildRequires: librsvg-devel
-BuildRequires: libselinux-devel
 BuildRequires: libspiro-devel
 BuildRequires: libstdc++6-devel
-BuildRequires: libtermcap-devel
-BuildRequires: libthai-devel
+BuildRequires: libsuitesparse-devel
+BuildRequires: libswscale-ffmpeg-devel
 BuildRequires: libtiff-devel
-BuildRequires: libv4l-devel
 BuildRequires: libwebp-devel
-BuildRequires: libxml2-devel
-BuildRequires: libz-devel
 ## AUTOBUILDREQ-END
 BuildRequires: libraw-devel >= 0.19.0-1mamba
 BuildRequires: liblensfun-devel >= 0.3.2-1mamba
@@ -123,26 +109,33 @@ Obsoletes:    %{name}-api
 #%patch1 -p1
 #%patch2 -p1
 #%patch3 -p1
+%patch4 -p1
 
 # workaround for a libtool error
 mkdir -p operations/workshop/external/lib
  
 %build
-./autogen.sh
+#./autogen.sh
 #export CAIRO_CFLAGS=-I/usr/include/cairo
-%configure \
-   --enable-gtk-doc \
-   --enable-workshop \
-   --enable-static \
-   --without-vala \
-   LDFLAGS="-ltermcap"
+%meson \
+   -Ddocs=true \
+   -Dworkshop=true
 
-%make -j1 || %make -j1
-#make check
+#% configure \
+#   --enable-gtk-doc \
+#   --enable-workshop \
+#   --enable-static \
+#   --without-vala \
+#   LDFLAGS="-ltermcap"
+
+export LANG=en_US.UTF-8
+
+%meson_build
 
 %install
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
-%makeinstall gtkdochtmldir=%{_datadir}/gtk-doc/html/gegl
+%meson_install
+#% makeinstall gtkdochtmldir=%{_datadir}/gtk-doc/html/gegl
 install -d  %{buildroot}%{_datadir}/applications
 install -d  %{buildroot}%{_datadir}/pixmaps
 
@@ -170,7 +163,7 @@ install -d  %{buildroot}%{_datadir}/pixmaps
 
 %files -f gegl-%{apiver}.lang
 %defattr(-,root,root)
-%{_bindir}/gcut
+#%{_bindir}/gcut
 %{_bindir}/gegl
 %{_bindir}/gegl-*
 %{_libdir}/libgegl-%{apiver}.so.*
@@ -196,13 +189,10 @@ install -d  %{buildroot}%{_datadir}/pixmaps
 %{_includedir}/gegl-%{apiver}/sc/*.h
 %dir %{_libdir}/gegl-%{apiver}
 %{_datadir}/gir-1.0/Gegl-%{apiver}.gir
-%{_libdir}/libgegl-*%{apiver}.a
-%{_libdir}/libgegl-*%{apiver}.la
 %{_libdir}/libgegl-%{apiver}.so
-%{_libdir}/gegl-%{apiver}/*.a
-%{_libdir}/gegl-%{apiver}/*.la
+%{_datadir}/vala/vapi/gegl-%{apiver}.deps
+%{_datadir}/vala/vapi/gegl-%{apiver}.vapi
 %{_libdir}/pkgconfig/gegl-*%{apiver}.pc
-%doc ChangeLog NEWS README
 
 %files apidocs
 %defattr(-,root,root)
@@ -210,6 +200,9 @@ install -d  %{buildroot}%{_datadir}/pixmaps
 %{_datadir}/gtk-doc/html/gegl/*
 
 %changelog
+* Sat Nov 02 2019 Silvan Calarco <silvan.calarco@mambasoft.it> 0.4.18-1mamba
+- update to 0.4.18
+
 * Sat Jul 06 2019 Automatic Build System <autodist@mambasoft.it> 0.4.16-1mamba
 - automatic version update by autodist