上一篇文章介绍了如何交叉编译 FFmpeg ，继续介绍 VLC播放器 交叉编译 。
首先下载 vlc 源码 我用的是 2.2.6 地址 ： http://mirrors.neusoft.edu.cn/videolan/vlc/2.2.6/vlc-2.2.6.tar.xz 解压，进入目录。
然后 设置 ffmpeg路径 ，上一章把ffmpeg 装在了 --prefix=/exports/rfs/usr 对应得在 交叉工具 脚本 中添加
export PKG_CONFIG_PATH=$SDKTARGETSYSROOT/usr/lib64/pkgconfig:/exports/rfs/usr/lib64/pkgconfig
source 你的交叉编译脚本。
然后 执行 ./bootstrapped （关键 ）
继续 configure
./configure --host=aarch64-poky-linux --prefix=/exports/rfs/usr --enable-run-as-root GL_LIBS="-lGLESv2" --disable-debug --disable-lua --disable-qt --disable-ogg --disable-mux_ogg --disable-pulse --disable-xcb --disable-vorbis --disable-mtp --disable-dbus --disable-mmx --disable-sse --disable-notify --disable-live555 --disable-dc1394 --disable-dvdnav --disable-libcddb --disable-vcd --disable-mod --disable-mpc --disable-gme --disable-mad --disable-postproc --disable-libtar --disable-dca --disable-zvbi --disable-xcb --disable-freetype --disable-fontconfig --disable-libxml2 --disable-skins2 --disable-qt --disable-atmo --disable-screen --disable-wma-fixed --disable-oss --disable-pulse --disable-alsa --disable-upnp --disable-ncurses --disable-libgcrypt --disable-gnutls --disable-speex --disable-schroedinger --disable-fluidsynth --disable-kate --disable-tiger --disable-bonjour --disable-jack --disable-dv1394 --disable-dvdread --disable-bluray --disable-linsys --disable-samplerate --disable-libass --disable-theora --disable-twolame --disable-udev --disable-svg --disable-opencv --disable-caca --disable-gnomevfs --disable-flac --disable-gst-decode
里面的库可以根据自己的需要添加 或者删除 可以 通过 ./configure --help | grep enable 查看
中途可能出现 libavcodec versions 56 and later are not supported yet ， 因为 ffmpeg 版本太新 vlc 还不兼容 ，解决办法是下一个版本低的ffmpeg 比如 2.8.13
也可能出现 FFmpeg 错误 C4996: "avcodec_alloc_frame 因为 ffmpeg 库 版本不一致
也可能 出现 libtool: link: warning: library `XXXXX.la' was moved. 因为 上面说的 PKG_CONFIG_PATH 中添加缺失的库路径 或者 在configure 中 --disalbe-报错的库
也可能出现 libgcrypy support 解决 方法 ： apt-get install libgcrypt-dev
可能出现 找不到 -lGL 需要指明 GL_LIBS="-lGLESv2" 使用 嵌入式 opengl glesv2 版本
成功出现
libvlc configuration -------------------- version : 2.2.6 system : linux architecture : aarch64 optimizations : yes vlc aliases : cvlc rvlc
会在 目录中出现 aarch64-poky-linux-libtool 可执行文件 。
更改名字
root@ubuntu:/vlc-2.2.6# cp aarch64-poky-linux-libtool libtool
然后就是 长长的make了
make
可能出现 error: #error MB_LEN_MAX wrong
toolchains/。。。。/include/bits/stdlib.h中 将
#define STDLIB_MB_LEN_MAX 16 改为
#define STDLIB_MB_LEN_MAX 1
或者 没定义 SSIZE_MAX # define SSIZE_MAX 32767
可能出现 libavformat /avformat .h No such file 需要把 /exports/rfs/usr 中的关于ffmpeg 的 include lib share 等拷贝到交叉工具链中。
可能出现 VLC is not supposed to be run as root. Sorry.
If you need to use real-time priorities and/or privileged TCP ports
you can use vlc-wrapper (make sure it is Set-UID root and
cannot be run by non-trusted users first).
只能重新编译安装，configure的时候加 --enable-run-as-root
可能出现
core libvlc error: No plugins found! Check your VLC installation
因为 编译好vlc 之后 没有正确安装 把--prefix 设置 根文件系统 下 /usr/
make
make install
完成
参考 http://sacarin.egloos.com/3103511
Cross compile VLC for ARM-based platforms Last updated: v0.0.2, 19 march 2004 This document describes all the steps to cross compile vlc for ARM based platforms. It describes how to build a cross compilation toolchain, how to build the libraries needed by vlc and the compilation of the vlc itself. Introduction This document is only a first draft. It does not intend to cover all subjects and is written for vlc version 0.7.2. You may still have some problems at some steps or find better way to do them. If you have any comment do not hesitate to contact us. Which platforms are targeted ? I will describe here how to compile vlc for an ARM based PDA running linux. It includes for example : Compaq - iPaq (H36xx, H38xx,...), using Familiar Linux GNU Portable Environment (GPE) Opie YOPY/Linupy Zaurus Requirements for cross-compilation Why cross-compiling ? It is of course possible to compile directly on the targeted platform. But there are a lot of great advantages to cross-compile : The most important one is probably the speed, because a desktop computer is most of the time faster than a PDA for compilation. Another big problem is that a complete compilation toolchain does take a great amount of disk space. And this space is usually very limited on embedded systems. And there also may not be enough memory to compile big files. Building the toolchain Prerequisite Importants paths During this section, we will use the following paths : I would personally advise to compile everything as a normal user and then install everything as root. ${SRCDIR} This is where the sources will be located and where the compilation will be done. (eg: /usr/src or /home/foobar/arm-src). ${PREFIX} This is where you want to install your cross compilation toolchain. It can be either installed system-wide (in /usr/local/arm/2.95.3 for example). Installation steps (i.e. make install) will have to be done as root. Or it can be installed in user-land, for the user's own use (/home/foobar/arm/2.95.3 for example). In this paper, the chosen prefix is /usr/local/arm/2.95.3, you will have to adapt the commands to what you choose.. Files needed Download the following files and put them in the ${SRCDIR}. Most of them are available on the "VideoLAN website" binutils-2.11.2.tar.gz linux-2.4.19.tar.bz2 patch-2.4.19-rmk4.bz2 gcc-2.95.3.tar.gz gcc-2.95.3.diff.bz2 gcc-2.95.3.diffbis.bz2 gcc-2.95.3.diff2 glibc-2.2.5.tar.gz glibc-linuxthreads-2.2.5.tar.gz SDL-1.2.5.tar.gz glib-1.2.10.tar.gz ffmpeg.tar.gz mad-0.14.2b.tar.gz flac-1.1.0.tar.gz libdvbpsi-0.1.2.tar.gz a52dec-0.7.4.tar.gz Binutils Compiling binutils is pretty simple : tar -xzf binutils-2.11.2.tar.gz cd binutils-2.11.2 ./configure --target=arm-linux --prefix=/usr/local/arm/2.95.3 make make install Preparing linux kernel Before building the glibc library the right kernel header files should be available. Therefor the kernel that is going to be used needs to be prepared so all necessary header files are present. Follow these steps. tar -xzf linux-2.4.19.tar.bz2 bunzip2 patch-2.4.19-rmk4.bz2 cd linux-2.4.19 make mrproper patch -p1 < ../patch-2.4.19-rmk4.bz2 make clean ARCH=arm CROSS_COMPILE=arm-linux- make ARCH=arm h3600_config Do not forget to save the configuration even if no changes are made ! make ARCH=arm menuconfig make symlinks ARCH=arm CROSS_COMPILE=arm-linux- mkdir -p /usr/local/arm/2.95.3/arm-linux/include cp -Rf include/asm include/asm-arm include/linux /usr/local/arm/2.95.3/arm-linux/include cd /usr/local/arm/2.95.3/arm-linux ln -s include sys-linux Basic cross compiler (gcc) tar -xvzf gcc-2.95.3.tar.gz bunzip2 gcc-2.95.3.diff.bz2 bunzip2 gcc-2.95.3.diffbis.bz2 patch -p1 -d gcc-2.95.3 < gcc-2.95.3.diff patch -p1 -d gcc-2.95.3 < gcc-2.95.3.diffbis cd gcc-2.95.3 ./configure --target=arm-linux --disable-threads --enable-languages=c --prefix=/usr/local/arm/2.95.3 --with-headers=linux-2.4.19/include make make install Compiling glibc Depending on your target, you may choose another glibc version (eg: 2.1.3 for linupy 1.4) tar -xvzf glibc-2.2.5.tar.gz cd glibc-2.2.5 tar -xvzf ../glibc-linuxthreads-2.2.5.tar.gz CC=arm-linux-gcc ./configure arm-linux --target=arm-linux --prefix=/usr/local/arm/2.95.3/arm-linux --enable-add-ons The following step takes quite a long time! CC=arm-linux-gcc make If you have problems compiling glibc due to pread/pwrite, edit sysdeps/unix/sysv/linux/kernel-features.h and turn __ASSUME_PREAD_SYSCALL and __ASSUME_PWRITE_SYSCALL from 1 to 0. CC=arm-linux-gcc make install Full cross compiler (gcc) Now it is time to build a cross-compiler that can built user space libraries too. Follow these steps: rm -Rf gcc-2.95.3 tar -xvzf gcc-2.95.3.tar.gz patch -p1 -d gcc-2.95.3 < gcc-2.95.3.diff patch -p1 -d gcc-2.95.3 < gcc-2.95.3.diff2 cd gcc-2.95.3 ./configure --target=arm-linux --prefix=/usr/local/arm/2.95.3 make make install Misc Add /usr/local/arm/2.95.3/bin to your PATH. Add the following line (depends on your shell) to your shell's configuration file : export PATH=/usr/local/arm/2.95.3/bin:$PATH I would advise you to completely log out and then log in again, so that the change would be taken into account. You can now check that when you type arm-linux-gcc, it launches the cross-compiler. Next are some packages that you may compile by yourself, but I found it was easier to use the precompiled packages. You can take them at "ipkgfind">. You may find packages with other version numbers which should not be a problem. libgcc1_3.1.1-1_arm.ipk This provides libgcc.so.1 which is needed to compile some libraries. xlibs_4.1-5_arm.ipk, xlibs-dev_4.1.0-16_arm.ipk Those are the libraries ans the development files for X windows. zlib1g_1.1.4-3_arm.ipk, zlib1g-dev_1.1.3-fam1_arm.ipk These libraries are needed by some libraries to compile. Install these packages on your compiler box in /usr/local/arm/2.95.3/arm-linux : You can use the script install.sh : #!/bin/sh # script to install .ipk into the arm-toolchain # usage : ./install.sh foobar.ipk if ! tar -xvzf $1 2> /dev/null then ar xv $1 2> /dev/null fi cp data.tar.gz /usr/local/arm/2.95.3/arm-linux cd /usr/local/arm/2.95.3/arm-linux tar -xvzf data.tar.gz Setting up Opie cross-compile environment Download the Opie SDK from the website "OPIE website" using the menuitem "Download Opie SDK" or try the direct link here: "Download Opie SDK". Download all files to your ${SOURCES}/opie directory. Opie SDK The Opie SDK does not come with a README file or installation instructions. I give them here instead. There are two tar files in the download a OpieSDK.tar.gz2 and a kdevelop_src.tar.bz2. The last file is a modified kdevelop for use with the OpieSDK. In this tutorial we will not use that. Unpack OpieSDK.tar.bz2 in your sources cd ${SOURCES}/opie directory. cd ${SOURCES}/opie tar -xjvf OpieSdk.tar.bz2 It creates a directories structure ${SOURCES}/opie/opt/OpieSDK. Inside that directory a script is present to start_kdevelop. Modify this script so that it uses the correct paths for you setup. #!/bin/sh source ${SOURCES}/opie/opt/OpieSdk/dev_env export KDEDIR=${SOURCES}/opie/opt/OpieSdk/kde export PATH=${SOURCES}/opie/opt/OpieSdk/kde/bin:$PATH kbuildsycoca kdevelop Save the script. Do the same with the script arm_source source ${SOURCES}/opie/opt/OpieSdk/dev_env export QTDIR=$QTDIR_ARM export OPIEDIR=$OPIEDIR_ARM Save the script and modify the script host_source in the same manner as above. source ${SOURCES}/opie/opt/OpieSdk/dev_env export QTDIR=$QTDIR_NAT export OPIEDIR=$OPIEDIR_NAT Save the script and modify the script dev_env in the same manner as above. export PYTHONPATH=${SOURCES}/opie/opt/OpieSdk/python/opie:${SOURCES}/opie/opt/OpieSdk/python/sip export PATH=/usr/local/arm/2.95.3/bin:/opt/OpieSdk/host_tools:${SOURCES}/opie/opt/OpieSdk/opie/x86/qt-2.3.7/bin:$PATH export PATH=${SOURCES}/opie/opt/OpieSdk/opie/x86/qmake:$PATH export QTDIR_NAT=${SOURCES}/opie/opt/OpieSdk/opie/x86/qt-2.3.7 export OPIEDIR_NAT=${SOURCES}/opie/opt/OpieSdk/opie/x86/sdk export QTDIR_ARM=${SOURCES}/opie/opt/OpieSdk/opie/arm/qt-2.3.7 export OPIEDIR_ARM=${SOURCES}/opie/opt/OpieSdk/opie/arm/sdk export OPIE_SDK_BASE=${SOURCES}/opie/opt/OpieSdk/ export OPIE_SDK_QMAKE_BASE=${SOURCES}/opie/opt/OpieSdk/opie/x86/sdk/mkspecs/qws/ export OPIE_DOC=${SOURCES}/opie/opt/OpieSdk/apidocs export LD_LIBRARY_PATH=${SOURCES}/opie/opt/OpieSdk/sip/lib:$OPIEDIR_NAT/lib:$QTDIR_NAT/lib:$LD_LIBRARY_PATH export OPIE_LANGUAGES=de:en:cz:da:dk:es:fr:hu:it:ja:ko:lv:mk:nl:no:pl:pt:pt_BR:ru:sl:zh_CN:zh_TW The symbolic linke to the tool qmake points now to the wrong place. We need to fix this symbolic link. Here is the way to do that. cd host_tools ln -sf ${SOURCES}/opie/opt/OpieSdk/opie/x86/sdk/qmake/qmake qmake cd ../ Now it is time to fire up our development environment and start hacking in Opie. Cross compiling libraries needed by vlc Download ipaq-config.site to ${SOURCES}. When downloading source tarballs copy them to your ${SOURCES} directory. Each section is supposed to begin with cd ${SOURCES}. SDL It is not clean at all but did not found a better working method. Using config.site it compiles well, but when linking with vlc there are problems ! /usr/local/arm/2.95.3/arm-linux/bin should contain the cross compiler without the prefix arm-linux-. tar -xvzf SDL-1.2.5.tar.gz cd SDL-1.2.5 ./configure --enable-release --target=arm-linux --host=arm-linux --disable-esd --prefix=/usr/local/arm/2.95.3/arm-linux/usr --x-includes=/usr/local/arm/2.95.3/arm-linux/usr/X11R6/include --x-libraries=/usr/local/arm/2.95.3/arm-linux/usr/X11R6/lib --disable-video-opengl export PATH=/usr/local/arm/2.95.3/arm-linux/bin:$PATH make && make install Glib/GTK+ tar -xvzf glib-1.2.10.tar.gz cd glib-1.2.10 CONFIG_SITE=../ipaq-config.site ./configure --prefix=/usr/local/arm/2.95.3/arm-linux/usr make make install cd .. tar -xvzf gtk+-1.2.10.tar.gz cd gtk+-1.2.10 CONFIG_SITE=../ipaq-config.site ./configure --prefix=/usr/local/arm/2.95.3/arm-linux/usr --with-glib=../glib-1.2.10 make make install ffmpeg tar -xvzf ffmpeg.tar.gz cd ffmpeg ./configure --cpu=armv4l --cc=arm-linux-gcc --disable-mmx --prefix=/usr/local/arm/2.95.3/arm-linux/usr --enable-shared cd libavcodec make Vlc does not require that you install ffmpeg. mad tar -xvzf mad-0.14.2b.tar.gz cd mad-0.14.2b ./configure --enable-release --target=arm-linux --host=arm-linux --disable-esd --prefix=/usr/local/arm/2.95.3/arm-linux/usr --x-includes=/usr/local/arm/2.95.3/arm-linux/usr/X11R6/include --x-libraries=/usr/local/arm/2.95.3/arm-linux/usr/X11R6/lib --disable-video-opengl export PATH=/usr/local/arm/2.95.3/arm-linux/bin:$PATH make gpe Not described. tremor Tremor is an integer decoder for the vorbis audio codec. Download the source through CVS at the "xiph.org" website. Log into CVS using the password : anoncvs. cvs -d :pserver:anoncvs@xiph.org:/usr/local/cvsroot login cvs -d :pserver:anoncvs@xiph.org:/usr/local/cvsroot co Tremor cd Tremor CONFIG_SITE=../ipaq-config.site ./configure --prefix=/usr/local/arm/2.95.3/arm-linux/usr make ogg For ogg, it is the same as Tremor. cvs -d :pserver:anoncvs@xiph.org:/usr/local/cvsroot login cvs -d :pserver:anoncvs@xiph.org:/usr/local/cvsroot co ogg cd ogg CONFIG_SITE=../ipaq-config.site ./configure --prefix=/usr/local/arm/2.95.3/arm-linux/usr make flac tar -xvzf flac-1.1.0.tar.gz cd flac-1.1.0 ./configure --enable-release --host=arm-linux --target=arm-linux --prefix=/usr/local/arm/2.95.3/arm-linux/usr It will probably fail (due to the xmms plugin), but it is not a problem, we will continue installation by hand. cp -Rf include/FLAC /usr/local/arm/2.95.3/arm-linux/include cd src/libFLAC make install libdvbpsi tar -xvzf libdvbpsi-0.1.2.tar.gz cd libdvbpsi-0.1.2 ./bootstrap ./configure --target=arm-linux --host=arm-linux make a52 tar -xvzf a52dec-0.7.4.tar.gz cd a52dec-0.7.4 ./configure --enable-release --host=arm-linux --target=arm-linux --prefix=/usr/local/arm/2.95.3/arm-linux/usr make && make install Cross compiling vlc itself First of all, run the ./bootstrap script. Then run one of the ipkg/rules.*, according to what you want to compile. Finally you just have to type make and you'll get a stand alone vlc. Run arm-linux-strip to remove symbols and so the size of the file, and now you can test it easily on your PDA. Enjoy ! Written by Marc Ariberti and Jean-Paul Saman, for the VideoLAN Team.