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71 lines
1.9 KiB
Plaintext
71 lines
1.9 KiB
Plaintext
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ODROID XU4
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==========
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product: http://www.hardkernel.com/main/products/prdt_info.php
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distro : Ubuntu 12.04.5
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uname : Linux odroid02 3.10.82 #1 SMP PREEMPT Wed Sep 2 19:59:44 BRT 2015 armv7l armv7l armv7l GNU/Linux
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gcc : 4.6.3-1ubuntu5
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Prerequisites
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=============
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Remove libav:
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$ apt-get remove libavcodec53 libavformat53
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$ apt-get remove libswscale2
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$ apt-get remove libavutil51
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$ apt-get remove libavutil-dev libavcodec-dev libavformat-dev libswscale-dev
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Get a recent ffmpeg:
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ffmpeg-2.8.6
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Review your CFLAGS:
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$ echo $CFLAGS
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And change/set accordingly:
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$ export CFLAGS="-mfpu=neon -march=armv7 -ftree-vectorize -mvectorize-with-neon-quad -O3"
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Build ffmpeg:
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$ ./configure --enable-shared --enable-nonfree --enable-neon --prefix=/usr
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$ make -j8
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$ sudo make install
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Configuring veejay
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==================
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WARNING: The system I used fails to detect the architecture:
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========
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~/veejay/veejay-current/veejay-server$ ./cpuinfo.sh
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*** glibc detected *** gcc: double free or corruption (top): 0x00053f10 ***
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Aborted
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-march=
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Relevant line from configure output:
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> checking Architecture... unknown
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You can workarround this issue by giving the '--enable-neon' configure option. This will force the CFLAGS for ARM
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If you have set your own CFLAGS, they will be added to the default CFLAGS. You should clear your CFLAGS and use '--with-extra-cflags' if you wish to add additional compiler flags.
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If you do not specify the '--enable-neon' option, you should set your own CFLAGS in order to have an optimized build:
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$ export CFLAGS="-DHAVE_ARM_NEON=1 -mfpu=neon -march=armv7 -ftree-vectorize -mvectorize-with-neon-quad -O3"
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Next, run configure, make and make install:
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$ sh autogen.sh
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$ ./configure --enable-neon
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$ make -j8
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$ sudo make install
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When you run veejay, you can see if NEON optimizations are built-in:
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> I: Using SIMD NEON optimized memcpy()
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TLDR:
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$ ./configure --enable-neon
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