ubuntu下编译VLC

ubuntu下编译VLC

标签（空格分隔）： ubuntu vlc 视频 编译

目录

• ubuntu下编译VLC
  • 1.下载VLC源码包并解压
  • 2.配置编译环境
    • 2.1使用configure脚本来配置
    • 2.2安装lua开发环境，再重新./configure
      • 编译安装readline库。修改lua的src/Makefile
      • 编译安装ncurses库，然后修改src/Makefile
    • 2.3 安装libmad库，重新./configure
    • 2.4 忽略avcodec/swscale/liba52
    • 2.5 解决pkg-config问题
      • 安装pkg-config和autoconf
    • 2.6 解决 XCB 包问题
      • 安装libxcb库
    • 2.7 alsa问题
    • 2.8 lingcrypt 问题
    • 2.9 成功的　configure
  • 3. make编译安装
    • 3.1解决lua共享库文件重定位问题
    • 3.2运行一下编译后的程序
      • 处理 core *** error错误
      • 处理解码支持问题
      • 处理 vcodec_free_context 函数隐式声明问题

---

1.下载VLC源码包并解压

VLC的源码包在VLC的官网有，可以直接下载。也可以使用git来clone一个。

git的地址git clone git://git.videolan.org/vlc.git

源码包地址 http://get.videolan.org/vlc/2.2.0/vlc-2.2.0.tar.xz

下载和解压

xz压缩的档案包使用J参数来解压

wget http://get.videolan.org/vlc/2.2.0/vlc-2.2.0.tar.xz
o@o-pc:~/work/vlc$ tar -xJvf vlc-2.2.0.tar.xz
...
o@o-pc:~/work/vlc$ ls vlc-2.2.0
ABOUT-NLS   autotools  ChangeLog    configure     COPYING      extras   lib         Makefile.am  NEWS    share  THANKS
aclocal.m4  bin        compat       configure.ac  COPYING.LIB  include  m4          Makefile.in  po      src
AUTHORS     bootstrap  config.h.in  contrib       doc          INSTALL  make-alias  modules      README  test

2.配置编译环境

下面说的东西很多，嫌麻烦的可以先安装依赖包，能够少很多问题。

$ sudo apt-get build-dep vlc

2.1使用configure脚本来配置

o@o-pc:~/work/vlc$ ./configure --prefix=/usr/local/vlc
...
checking for LUA... no
configure: WARNING: , trying lua 5.1 instead
checking for LUA... no
configure: WARNING: , trying lua >= 5.1 instead
checking for LUA... no
configure: WARNING: , trying manual detection instead
checking lua.h usability... no
checking lua.h presence... no
checking for lua.h... no
checking lauxlib.h usability... no
checking lauxlib.h presence... no
checking for lauxlib.h... no
checking lualib.h usability... no
checking lualib.h presence... no
checking for lualib.h... no
checking for luaL_newstate in -llua5.2 ... no
checking for luaL_newstate in -llua5.1 ... no
checking for luaL_newstate in -llua51 ... no
checking for luaL_newstate in -llua ... no

configure: error: Could not find lua. Lua is needed for some interfaces (rc, telnet, http) as well as many other custom scripts. Use --disable-lua to ignore this error.

看到上面的错误提示了吧，lua没有发现。Lua是需要一些接口（RC，TELNET，HTTP）以及许多其他的自定义脚本.可以使用--disable-lua来忽略这个错误。

我的电脑上确实没有安装lua，我也不打算忽略这个错误。

o@o-pc:~/work/vlc/vlc-2.2.0$ lua
程序 'lua' 已包含在下列软件包中：
 * lua5.2
 * lua5.1
 * lua50
请尝试：sudo apt-get install <选定的软件包>

2.2安装lua开发环境，再重新./configure

先安装一个lua5.2

o@o-pc:~/work/vlc/vlc-2.2.0$ sudo apt-get install lua5.2

仅仅安装这个lua是不行的，这个lua5.2只是一个脚本解释器而已。

去lua官网下载一个lua的源码包。http://www.lua.org/ftp/lua-5.2.4.tar.gz

下载之后再编译lua。编译的时候需要指定平台。

o@o-pc:~/work/lua/lua-5.2.4$ make
Please do 'make PLATFORM' where PLATFORM is one of these:
   aix ansi bsd freebsd generic linux macosx mingw posix solaris
See doc/readme.html for complete instructions.
o@o-pc:~/work/lua/lua-5.2.4$ make linux
cd src && make linux
...
lua.c:67:31: fatal error: readline/readline.h: 没有那个文件或目录
 #include <readline/readline.h>
                               ^
...

编译的时候提示错误，找不到头文件readline/readline.h，那么去下载一个。

wget ftp://ftp.cwru.edu/pub/bash/readline-6.3.tar.gz

解压后在make编译安装readline

./configure指定了其安装的目录，其实不指定目录更好。

o@o-pc:~/work/lua$ tar -xzvf readline-6.3.tar.gz
...
o@o-pc:~/work/lua/readline-6.3$ ./configure --prefix=/usr/local/readline
...
o@o-pc:~/work/lua/readline-6.3$ make
...
o@o-pc:~/work/lua/readline-6.3$ sudo make install

编译安装readline库。修改lua的src/Makefile

如果前面配置编译readline的时候不指定目录，就不需要修改了。所以前面说不指定目录更好。

注意：这里修改的Makefile文件的位置，是src目录下的Makefile。

o@o-pc:~/work/lua/lua-5.2.4$ vi src/Makefile

修改MYCFLAGS和MYLDFLAGS两个变量的值(应该是22,23行)。

MYLDFLAGS= -L/usr/local/readline/lib```
**再次`make linux`
可以看到找不到头文件的错误已经没有了，但是有了新的错误。
这个错误是因为不能链接上动态库的原因。
```shell
cd src && make linux
make[1]: 正在进入目录 `/home/o/work/lua/lua-5.2.4/src'
make all SYSCFLAGS="-DLUA_USE_LINUX" SYSLIBS="-Wl,-E -ldl -lreadline"
make[2]: 正在进入目录 `/home/o/work/lua/lua-5.2.4/src'
gcc -O2 -Wall -DLUA_COMPAT_ALL -DLUA_USE_LINUX -I/usr/local/readline/include   -c -o lua.o lua.c
gcc -o lua  -L/usr/local/readline/lib lua.o liblua.a -lm -Wl,-E -ldl -lreadline
/usr/local/readline/lib/libreadline.so：对‘tputs’未定义的引用
/usr/local/readline/lib/libreadline.so：对‘tgoto’未定义的引用
/usr/local/readline/lib/libreadline.so：对‘tgetflag’未定义的引用
/usr/local/readline/lib/libreadline.so：对‘UP’未定义的引用
/usr/local/readline/lib/libreadline.so：对‘tgetent’未定义的引用
/usr/local/readline/lib/libreadline.so：对‘tgetnum’未定义的引用
/usr/local/readline/lib/libreadline.so：对‘PC’未定义的引用
/usr/local/readline/lib/libreadline.so：对‘tgetstr’未定义的引用
/usr/local/readline/lib/libreadline.so：对‘BC’未定义的引用
collect2: error: ld returned 1 exit status
make[2]: *** [lua] 错误 1
make[2]:正在离开目录 `/home/o/work/lua/lua-5.2.4/src'
make[1]: *** [linux] 错误 2
make[1]:正在离开目录 `/home/o/work/lua/lua-5.2.4/src'
make: *** [linux] 错误 2

编译安装ncurses库，然后修改src/Makefile

现在解决这个错误。先得知道这个错误的原因。原因是因为readline这个库，还依赖于ncurses这个库。于是我们还需要去下载这个｀ncurses｀库。

o@o-pc:~/work/lua$ wget http://ftp.gnu.org/pub/gnu/ncurses/ncurses-5.9.tar.gz
...
o@o-pc:~/work/lua$ tar -xzvf ncurses-5.9.tar.gz
...
o@o-pc:~/work/lua/ncurses-5.9$ ./configure
...
** Configuration summary for NCURSES 5.9 20110404:

     extended funcs: yes
     xterm terminfo: xterm-new

      bin directory: /usr/bin
      lib directory: /usr/lib
  include directory: /usr/include
      man directory: /usr/man
 terminfo directory: /usr/share/terminfo

这次我们.configure的时候没有指定安装路径，使用默认的配置。

o@o-pc:~/work/lua/ncurses-5.9$ make
...
o@o-pc:~/work/lua/ncurses-5.9$ sudo make install

我们还得修改src/Makefile文件

linux编译target=linux，在SYSLIBS变量中追加-lncurses选项即可。如下(应该是105,106行)：

linux: $(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_LINUX" SYSLIBS="-Wl,-E -ldl -lreadline -lncurses"

上述操作完成后，再次make　linux就没问题了。

重新编译安装lua

o@o-pc:~/work/lua/lua-5.2.4$ make linux
...
o@o-pc:~/work/lua/lua-5.2.4$ sudo make install
cd src && mkdir -p /usr/local/bin /usr/local/include /usr/local/lib /usr/local/man/man1 /usr/local/share/lua/5.2 /usr/local/lib/lua/5.2
cd src && install -p -m 0755 lua luac /usr/local/bin
cd src && install -p -m 0644 lua.h luaconf.h lualib.h lauxlib.h lua.hpp /usr/local/include
cd src && install -p -m 0644 liblua.a /usr/local/lib
cd doc && install -p -m 0644 lua.1 luac.1 /usr/local/man/man1

2.3 安装libmad库，重新./configure

再次./configure后又报错了，这次的错误原因是没有发现libmad库。它还提供了一个地址给我们，那么就去这个地址看看。

o@o-pc:~/work/vlc/vlc-2.2.0$ ./configure --prefix=/usr/local/vlc
configure: error: Could not find libmad on your system: you may get it from http://www.underbit.com/products/mad/. Alternatively you can use --disable-mad to disable the mad plugin.

在　　http://www.underbit.com/products/mad/　　这个页面，可以找到一个ftp的下载站点　　ftp://ftp.mars.org/pub/mpeg/　那就从这里开始吧。

下载／配置／编译／安装

o@o-pc:~/work/vlc$ wget ftp://ftp.mars.org/pub/mpeg/libmad-0.15.1b.tar.gz
o@o-pc:~/work/vlc$ tar -xzvf libmad-0.15.1b.tar.gz
o@o-pc:~/work/vlc/libmad-0.15.1b$ ./configure
o@o-pc:~/work/vlc/libmad-0.15.1b$ make
...
 gcc -DHAVE_CONFIG_H -I. -I. -I. -DFPM_DEFAULT -Wall -g -O -fforce-mem -fforce-addr -fthread-jumps -fcse-follow-jumps -fcse-skip-blocks -fexpensive-optimizations -fregmove -fschedule-insns2 -MT version.lo -MD -MP -MF .deps/version.Tpo -c version.c  -fPIC -DPIC -o .libs/version.o
gcc: error: unrecognized command line option '-fforce-mem'
make[2]: *** [version.lo] 错误 1
...

在make的时候报错了。错误的原因是gcc没有选项-fforce-mem。原因是因为当前的gcc版本太高了，就不提供这个选项了。我们修改Makefile来适应当前的gcc编译器。

打开Makefile文件

找到关键的一行(应该是129)CFLAGS = -Wall -g -O -fforce-mem -fforce-addr -fthread-jumps -fcse-follow-jumps -fcse-skip-blocks -fexpensive-optimizations -fregmove -fschedule-insns2　将-fforce-mem删除即可。

重新make编译安装

o@o-pc:~/work/vlc/libmad-0.15.1b$ sudo make install
[sudo] password for o:
make  install-recursive
...
chmod 644 /usr/local/lib/libmad.a
PATH="$PATH:/sbin" ldconfig -n /usr/local/lib
...
Libraries have been installed in:
   /usr/local/lib
...
mkdir -p -- . /usr/local/include
 /usr/bin/install -c -m 644 mad.h /usr/local/include/mad.h
 ...

2.4 忽略avcodec/swscale/liba52

经过上面的步骤，我们再./configure的时候，又会报错

o@o-pc:~/work/vlc/vlc-2.2.0$ ./configure --prefix=/usr/local/vlc
...
checking for AVCODEC... no
configure: error: . Pass --disable-avcodec to ignore this error.

这次是没有检查到ＡＶＣＯＤＥＣ，我们这次就不再去下载编译它了。如果需要，就下载ffmpeg编译安装就是。

如果指示忽略掉avcodec之后还会报错，还需要忽略两个。

o@o-pc:~/work/vlc/vlc-2.2.0$ ./configure --prefix=/usr/local/vlc --disable-avcodec --disable-swscale --disable-a52
...
configure: error: in `/home/o/work/vlc/vlc-2.2.0':
configure: error: The pkg-config script could not be found or is too old.  Make sure it
is in your PATH or set the PKG_CONFIG environment variable to the full
...

2.5 解决pkg-config问题

又报错了，这个从的错误是这个pkg-config无法找到或者太旧。确保它

在PATH或者设置PKG_CONFIG环境变量完整。

安装pkg-config和autoconf

要解决它，先安装一下pkg-config和autoconf。然后运行一下bootstrap脚本。

o@o-pc:~/work/vlc/vlc-2.2.0$ sudo apt-get install pkg-config
o@o-pc:~/work/vlc/vlc-2.2.0$ sudo apt-get install autoconf
o@o-pc:~/work/vlc/vlc-2.2.0$ ./bootstrap
...
autoreconf: running: libtoolize --copy --force
Can't exec "libtoolize": 没有那个文件或目录 at /usr/share/autoconf/Autom4te/FileUtils.pm line 345, <GEN3> line 6.
autoreconf: failed to run libtoolize: 没有那个文件或目录
autoreconf: libtoolize is needed because this package uses Libtool

还有错误，要安装libtool

o@o-pc:~/work/vlc/vlc-2.2.0$ sudo apt-get install libtool

安装之后再次./bootstrap，可以看到成功了。

o@o-pc:~/work/vlc/vlc-2.2.0$ ./bootstrap
...
autoreconf: configure.ac: tracing
autoreconf: running: libtoolize --copy --force
...
Successfully bootstrapped

2.6 解决 XCB 包问题

然后在./configure可以看到，还有错误。这次的错误是xcb包的问题。

看错误输出

包装要求（XCB>=1.6）没有得到满足：没有发现包'XCB'

试想，如果你调整PKG_CONFIG_PATH环境变量，安装的软件在一个非标准的前缀。

o@o-pc:~/work/vlc/vlc-2.2.0$ ./configure --prefix=/usr/local/vlc --disable-avcodec --disable-swscale --disable-a52
...
configure: error: Package requirements (xcb >= 1.6) were not met:
No package 'xcb' found
Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.
Alternatively, you may set the environment variables XCB_CFLAGS
and XCB_LIBS to avoid the need to call pkg-config.

它也给了我们解决的办法

Alternatively, you may set the environment variables XCB_CFLAGS

and XCB_LIBS to avoid the need to call pkg-config.

或者，您可以设置环境变量XCB_CFLAGS和XCB_LIBS以避免需要调用pkg配置。

安装libxcb库

那么我们还是需要下载安装libxcb库

wget http://xcb.freedesktop.org/dist/libxcb-1.7.tar.gz
wget http://xcb.freedesktop.org/dist/xcb-proto-1.7.tar.gz

先编译安装xcb-proto，再去配置linxcb编译环境的时候，这时候还会报错

o@o-pc:~/work/vlc/xcb/libxcb-1.7$ ./configure
configure: error: Package requirements (pthread-stubs xau >= 0.99.2) were not met:

No package 'pthread-stubs' found
No package 'xau' found

我们再安装libxau-dev和libpthread-stubs0-dev

o@o-pc:~/work/vlc/xcb/libxcb-1.7$ sudo apt-get install libpthread-stubs0-dev o@o-pc:~/work/vlc/xcb/libxcb-1.7$ sudo apt-get install libxau-dev

然后添加环境变量

export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/lib/pkgconfig

再次./configure就成功了

o@o-pc:~/work/vlc/xcb/libxcb-1.7$ ./configure
  Package: libxcb 1.7
...
  Used CFLAGS:
    CPPFLAGS............:
    CFLAGS..............: -g -O2
    Warning CFLAGS......: -Wall -pedantic -Wpointer-arith 		-Wstrict-prototypes -Wmissing-declarations -Wnested-externs
...
  Installation:
    Prefix..............: /usr/local
o@o-pc:~/work/vlc/xcb/libxcb-1.7$ make
o@o-pc:~/work/vlc/xcb/libxcb-1.7$ sudo make install

2.7 alsa问题

回到　vlc-2.2.0 目录，再次./configure ...，又报错了

o@o-pc:~/work/vlc/vlc-2.2.0$ ./configure --prefix=/usr/local/vlc --disable-avcodec --disable-swscale --disable-a52
...
checking for ALSA... no
configure: error: No package 'alsa' found. alsa-lib 1.0.24 or later required.

这次是找不到alsa包，那么还是去安装一个吧。

o@o-pc:~/work/vlc/xcb/libxcb-1.7$ sudo apt-get install libalsa-ocaml-dev
正在读取软件包列表... 完成
正在分析软件包的依赖关系树
正在读取状态信息... 完成
将会安装下列额外的软件包：
  camlp4 ledit libasound2-dev libfindlib-ocaml libfindlib-ocaml-dev
  libncurses5-dev libtinfo-dev ocaml-compiler-libs ocaml-findlib ocaml-interp
  ocaml-nox
...

我们看到它提示会额外安装libasound2-dev，其实我们这里需要的就是这个。

2.8 lingcrypt 问题

之前安装了libalsa-ocaml-dev之后，再次configure还有错误，没关系，继续解决。

o@o-pc:~/work/vlc/vlc-2.2.0$ ./configure --prefix=/usr/local/vlc --disable-avcodec --disable-swscale --disable-a52
...
checking whether GCRYCTL_SET_THREAD_CBS is declared... no
configure: error: libgcrypt version 1.1.94 or higher not found. Install libgcrypt or pass --disable-libgcrypt.

这里提示我们没有发现libgcrypt 1.1.94或者更高的版本，那么就安装一个。

o@o-pc:~/work/vlc/xcb/libxcb-1.7$ sudo apt-get install libgcrypt20-dev
...
将会安装下列额外的软件包：
  libgcrypt20 libgpg-error-dev
  ...

2.9 成功的　configure

o@o-pc:~/work/vlc/vlc-2.2.0$ ./configure --prefix=/usr/local/vlc --disable-avcodec --disable-swscale --disable-a52
...
libvlc configuration
--------------------
version               : 2.2.0
system                : linux
architecture          : x86_64 mmx sse sse2
optimizations         : yes
vlc aliases           : cvlc rvlc

To build vlc and its plugins, type `make', or `./compile' if you like nice colors.

3. make编译安装

make的过程会又大量的 warning ，这是正常的，不用管它。但是有错误必须解决

o@o-pc:~/work/vlc/vlc-2.2.0$ make
...
/usr/bin/ld: //usr/local/lib/liblua.a(lapi.o): relocation R_X86_64_32 against `luaO_nilobject_' can not be used when making a shared object; recompile with -fPIC
//usr/local/lib/liblua.a: error adding symbols: Bad value
collect2: error: ld returned 1 exit status
make[4]: *** [liblua_plugin.la] 错误 1
...

3.1解决lua共享库文件重定位问题

这里出现的错误提示:创建共享目标时，对'luaO_nilobject_文件的重定位R_X86_64_32不能使用;重新编译，使用-fPIC选项。

-fPIC 作用于编译阶段，告诉编译器产生与位置无关代码(Position-Independent Code)，则产生的代码中，没有绝对地址，全部使用相对地址，故而代码可以被加载器加载到内存的任意位置，都可以正确的执行。这正是共享库所要求的，共享库被加载时，在内存的位置不是固定的。

那么我们还是需要去修改Makefile文件了，不过不是vlc的Makefile文件，而是lua的。

进入lua-5.2.4目录，然后修改src目录下的Makefile。

o@o-pc:~/work/lua/lua-5.2.4$ vi src/Makefile

修改MYCFLAGS变量的值(应该是22行)，为其加上-fPIC选项。

MYCFLAGS= -I/usr/loacl/readline/include -fPIC

修改完成之后重新make编译安装。

回到vlc-2.2.0目录，重新make，这次就成功了。

o@o-pc:~/work/vlc/vlc-2.2.0$ make
  GEN      ../modules/plugins.dat
...
  GEN      cvlc
  GEN      rvlc
  GEN      vlc
  ...

3.2运行一下编译后的程序

处理 core *** error错误

出现了三个错误，是因为之前./configure配置的时候，我们忽略了一些警告。可以安装libxml2-dev，libvlc-dev等库，然后重新./configure后make

o@o-pc:~/work/vlc/vlc-2.2.0$ ./vlc
VLC media player 2.2.0 Weatherwax (revision 2.2.0-0-g1349ef2)
[0000000002132a28] core xml reader error: XML reader not found
[0000000002158b58] core interface error: no suitable interface module
[000000000209a3f8] core libvlc error: interface "globalhotkeys,none" initialization failed
[000000000209a3f8] core libvlc: Running vlc with the default interface. Use 'cvlc' to use vlc without interface.
[0000000002158b58] [cli] lua interface: Listening on host "*console".
VLC media player 2.2.0 Weatherwax
Command Line Interface initialized. Type `help' for help.

安装libxml2-dev之后重新./configure再make后去运行，少了一个错误了。剩下的两个错误也可以通过这个办法解决。(安装libmodplug-dev,libdvbpsi-dev库会更好，core libvlc error错误可以安装libvlc-dev库，这个库我们已经编译了)

o@o-pc:~/work/vlc/vlc-2.2.0$ ./vlc
VLC media player 2.2.0 Weatherwax (revision 2.2.0-0-g1349ef2)
[000000000262e748] core interface error: no suitable interface module
[000000000256c3f8] core libvlc error: interface "globalhotkeys,none" initialization failed
[000000000256c3f8] core libvlc: Running vlc with the default interface. Use 'cvlc' to use vlc without interface.
[000000000262aed8] [cli] lua interface: Listening on host "*console".
VLC media player 2.2.0 Weatherwax
Command Line Interface initialized. Type `help' for help.
> quit
Shutting down.
[000000000262aed8] [cli] lua interface: Requested shutdown.

处理解码支持问题

已经提示我们输入命令行参数去初始化接口了

可以尝试一下添加一个视频文件到播放列表，可以看到这次是解码出错了，因为h264编码不支持。继续解决。

o@o-pc:~/work/vlc/vlc-2.2.0$ ./vlc
VLC media player 2.2.0 Weatherwax (revision 2.2.0-0-g1349ef2)
[0000000001dcf938] core interface error: no suitable interface module
[0000000001d093f8] core libvlc error: interface "globalhotkeys,none" initialization failed
[0000000001d093f8] core libvlc: Running vlc with the default interface. Use 'cvlc' to use vlc without interface.
[0000000001e35898] [cli] lua interface: Listening on host "*console".
VLC media player 2.2.0 Weatherwax
Command Line Interface initialized. Type `help' for help.
> add ../../../视频/NextLight.flv
> [00007f1fe4c7df38] core decoder error: Codec `h264' (H264 - MPEG-4 AVC (part 10)) is not supported.
[00007f1fe4c7df38] core decoder error: Codec not supported
[00007f1fe4c7df38] core decoder error: VLC could not decode the format "h264" (H264 - MPEG-4 AVC (part 10))
[00007f1fe4c7df38] core decoder error: Codec `mp4a' (MPEG AAC Audio) is not supported.
[00007f1fe4c7df38] core decoder error: Codec not supported
[00007f1fe4c7df38] core decoder error: VLC could not decode the format "mp4a" (MPEG AAC Audio)

安装libavcodec-dev和libavformat-dev库，然后重新./configure，这次没有添加--disable-avcodec等选项。顺便把libswscale-dev和liba52这两个库。

o@o-pc:~/work/vlc/vlc-2.2.0$ sudo apt-get install libavcodec-dev
o@o-pc:~/work/vlc/vlc-2.2.0$ sudo apt-get install libavformat-dev
o@o-pc:~/work/vlc/vlc-2.2.0$ sudo apt-get install libswscale-dev
o@o-pc:~/work/vlc/vlc-2.2.0$ sudo apt-get install liba52-0.7.4-dev
o@o-pc:~/work/vlc/vlc-2.2.0$ ./configure --prefix=/usr/local/vlc

重新编译

o@o-pc:~/work/vlc/vlc-2.2.0$ make
...
  CC       libpacketizer_avparser_plugin_la-avparser.lo
avparser.c: In function ‘OpenPacketizer’:
avparser.c:108:9: error: implicit declaration of function ‘avcodec_free_context’ [-Werror=implicit-function-declaration]
         avcodec_free_context( &p_codec_ctx );
         ^
cc1: some warnings being treated as errors
make[5]: *** [libpacketizer_avparser_plugin_la-avparser.lo] 错误 1

处理 vcodec_free_context 函数隐式声明问题

make的时候有一处错误：avparser.c:108:9: error:implicit declaration offunction ‘avcodec_free_context’[-Werror=implicit-function-declaration]

解决方法是：打开/vlc-2.2.0/modules/packetizer/Makefile文件，把里面的-Werror-implicit-function-declaration删除掉可。

然后重现编译就通过了。

o@o-pc:~/work/vlc/vlc-2.2.0$ make
...
  GEN      cvlc
  GEN      rvlc
  GEN      vlc
  ...

可以来播放视频了

不断的报音频输出错误alsa audio output error:cannot estimate delay:是因为...

o@o-pc:~/work/vlc/vlc-2.2.0$ ./vlc
VLC media player 2.2.0 Weatherwax (revision 2.2.0-0-g1349ef2)
[0000000002409388] core interface error: no suitable interface module
[0000000002313398] core libvlc error: interface "globalhotkeys,none" initialization failed
[0000000002313398] core libvlc: Running vlc with the default interface. Use 'cvlc' to use vlc without interface.
[00000000023daf48] [cli] lua interface: Listening on host "*console".
VLC media player 2.2.0 Weatherwax
Command Line Interface initialized. Type `help' for help.
> add ../../MediaFiles/NextLight.flv
> [00007fdf18001478] xcb_window window error: X11 key press support not compiled-in
[00000000023c5b78] alsa audio output error: cannot estimate delay: 输入/输出错误
[00000000023c5b78] alsa audio output error: cannot estimate delay: 输入/输出错误
[00000000023c5b78] alsa audio output error: cannot estimate delay: 输入/输出错误