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+This script builds Blender from its source code, rather than repackaging
+an existing binary version. The process is therefore more complex and
+time consuming but allows finer tuning of capabilities of the resulting
+package. Working through the prerequisite packages from the REQUIRES field
+of Blender.info results in the following basic build order:
+	multimedia/ffmpeg
+	audio/jack-audio-connection-kit
+	libraries/opencv
+	graphics/opencollada
+	libraries/OpenAL
+	libraries/openjpeg
+	python/python3
+	python/python-requests
+	development/valgrind
+	libraries/LibRaw
+	libraries/libwebp
+	development/numpy3
+	development/SDL2
+	graphics/opencolorio
+	graphics/openimageio
+	libraries/jemalloc
+	libraries/freealut
+	graphics/Blender
+
+When generating a new build order, python3 should first be added to the
+REQUIRES field of python-requests.info.
+
+To facilitate the greatest utility for Blender, its is strongly
+suggested that a number of standard SBo packages be built with
+a more complete set of features than provided by the default scripts:
+    1. the opencv package could/should first be built with additional
+features by preinstalling some other packages e.g.
+REQUIRES="
+opencl-headers libjpeg-turbo ffmpeg Sphinx libdc1394
+numpy3 gtkglext tbb jdk
+"
+The cmake configuration in opencv.SlackBuild can be replaced with:
+  cmake \
+    -DCMAKE_C_FLAGS="$SLKCFLAGS" \
+    -DCMAKE_CXX_FLAGS="$SLKCFLAGS" \
+    -DCMAKE_BUILD_TYPE="Release" \
+    -DCMAKE_INSTALL_PREFIX=/usr \
+    -DBUILD_SHARED_LIBS=ON \
+    -DENABLE_PRECOMPILED_HEADERS=OFF \
+    -DLIB_SUFFIX=$LIBDIRSUFFIX \
+    -DWITH_TBB=ON \
+    -DWITH_OPENCL=ON \
+    -DWITH_OPENGL=ON \
+    -DWITH_QT=ON \
+    -DWITH_XINE=ON \
+    -DBUILD_EXAMPLES=ON \
+    -DINSTALL_C_EXAMPLES=ON \
+    -DINSTALL_PYTHON_EXAMPLES=ON \
+    -DBUILD_NEW_PYTHON_SUPPORT=ON \
+    -DWITH_FFMPEG=ON \
+    -DCMAKE_SKIP_RPATH=ON \
+    -DWITH_1394:BOOL=ON \
+    ..
+
+If resources allow, the very large cudatoolkit package is another
+possible package which may be preinstalled and be utilised by the
+opencv build process.
+
+    2. the ffmpeg package could/should first be built with additional
+features by preinstalling some other packages e.g.
+REQUIRES="lame x264
+speex libbluray xvidcore OpenAL libmodplug frei0r libdc1394 libavc1394
+libiec61883 ladspa_sdk gsm rtmpdump libvpx libva twolame celt faac
+dirac schroedinger openjpeg "
+
+    3. the numpy SlackBuild at SBo does not build the python3 modules
+which are needed to be useful for any numpy-related python scripting in
+blender. It is therefore numpy3 which is the prerequisite for this build
+of blender.
+
+Due to the official versions of some software packages included in
+Slackware 14.1, the most recent version of Blender that can be built from
+the source code is Blender-2.74. Building more recent versions of
+Blender would require replacement of at least the openexr and ilmbase
+packages (both already updated in -current).
+
+NB. if building for -current (14.2), use SBo's openjpeg1 instead of
+Slackware -current's official openjpeg (version 2.x.x).