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91 lines
4.0 KiB
Markdown
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Linux FAQs with Answers--How to fix “fatal error: x264.h: No such file or directory” on Linux
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> **Question**: I am trying to build a video encoding application from the source on Linux. However, during compilation, I am encountering the error: "fatal error: x264.h: No such file or directory" How can I fix this error?
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The following compilation error indicates that you do not have x264 library's development files installed on your Linux system.
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fatal error: x264.h: No such file or directory
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[x264][1] is an H.264/MPEG-4 AVC encoder library licensed with GNU GPL. The x264 library is popularly used by many video encoder/transcoder programs such as Avidemux, [FFmpeg][2], [HandBrake][3], OpenShot, MEncode and more.
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To solve the above compilation error, you need to install development files for x264 library. Here is how you can do it.
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### Install x264 Library and its Development Files on Debian, Ubuntu or Linux Mint ###
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On Debian based systems, x264 library is already included in the base repositories. Thus its installation is straightforward with apt-get as follows.
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$ sudo apt-get install libx264-dev
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### Install x264 Library and its Development Files on Fedora, CentOS/RHEL ###
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On Red Hat based distributions such as Fedora or CentOS, the x264 library is available via the free repository of RPM Fusion. Thus, you need to install [RPM Fusion (free)][4] first.
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Once RPM Fusion is set up, you can install x264 development files as follows.
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$ sudo yum --enablerepo=rpmfusion-free install x264-devel
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Note that RPM Fusion repository is not available for CentOS 7 yet, so the above method does not work for CentOS 7. In case of CentOS 7, you can build and install x264 library from the source, which is explained below.
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### Compile x264 Library from the Source on Debian, Ubuntu or Linux Mint ###
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If the libx264 package that comes with your distribution is not up-to-date, you can compile the latest x264 library from the source as follows.
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$ sudo apt-get install g++ automake autoconf libtool yasm nasm git
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$ git clone git://git.videolan.org/x264.git
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$ cd x264
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$ ./configure --enable-static --enable-shared
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$ make
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$ sudo make install
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The x264 library will be installed in /usr/local/lib. To allow the library to be used by other applications, you need to complete the last step:
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Open /etc/ld.so.conf with a text editor, and append the following line.
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$ sudo vi /etc/ld.so.conf
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----------
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/usr/local/lib
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Finally reload all shared libraries by running:
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$ sudo ldconfig
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### Compile x264 Library from the Source on Fedora, CentOS/RHEL ###
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If the x264 library is not available on your Linux distribution (e.g., CentOS 7) or the x264 library is not up-to-date, you can build the latest x264 library from the source as follows.
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$ sudo yum install gcc gcc-c++ automake autoconf libtool yasm nasm git
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$ git clone git://git.videolan.org/x264.git
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$ cd x264
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$ ./configure --enable-static --enable-shared
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$ make
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$ sudo make install
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Finally, to allow other applications to use x264 library installed in /usr/local/lib, add the following line in /etc/ld.so.conf:
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$ sudo vi /etc/ld.so.conf
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----------
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/usr/local/lib
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and reload all shared libraries by running:
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$ sudo ldconfig
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--------------------------------------------------------------------------------
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via: http://ask.xmodulo.com/fatal-error-x264-h-no-such-file-or-directory.html
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
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[1]:http://www.videolan.org/developers/x264.html
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[2]:http://ask.xmodulo.com/compile-ffmpeg-centos-fedora-rhel.html
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[3]:http://xmodulo.com/how-to-install-handbrake-on-linux.html
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[4]:http://xmodulo.com/how-to-install-rpm-fusion-on-fedora.html
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