arm linux ld unsafe,MPlayer在ARM2440开发板的移植

傷城~ 2023-01-22 05:49 22阅读 0赞

如果不取消,将会产生如下错误

arm-linux-gcc -I../libswscale -I../libavcodec  -DHAVE\_AV\_CONFIG\_H -D\_FILE\_OFFSET                                              \_BITS=64 -D\_LARGEFILE\_SOURCE -D\_ISOC9X\_SOURCE -I.. -I.. -I../libavutil -Wdisable                                              d-optimization -Wno-pointer-sign -Wdeclaration-after-statement -I. -I.. -I../lib                                              avutil -Wall -Wno-switch -Wpointer-arith -Wredundant-decls -O4   -pipe -ffast-ma                                              th -fomit-frame-pointer -D\_REENTRANT -DHAVE\_CONFIG\_H -I/home/workspace/MPlayer/M                                              Player-1.0rc2/../output/linux\_arm/include -I/usr/X11R6/include  -c -o armv4l/dsp                                              util\_arm\_s.o armv4l/dsputil\_arm\_s.S

cc1: warning: include location "/usr/X11R6/include" is unsafe for cross-compilat                                              ion

armv4l/dsputil\_arm\_s.S: Assembler messages:

armv4l/dsputil\_arm\_s.S:79: Error: selected processor does not support \`pld \[r1\]''

armv4l/dsputil\_arm\_s.S:90: Error: selected processor does not support \`pld \[r1\]''

armv4l/dsputil\_arm\_s.S:100: Error: selected processor does not support \`pld \[r1\]                                              ''

armv4l/dsputil\_arm\_s.S:111: Error: selected processor does not support \`pld \[r1\]                                              ''

armv4l/dsputil\_arm\_s.S:122: Error: selected processor does not support \`pld \[r1\]                                              ''

armv4l/dsputil\_arm\_s.S:141: Error: selected processor does not support \`pld \[r1\]

make

修改make install的bug

执行make install时会提示

install -m 755 -s mplayer /home/hxy/MPlayer/

MPlayer-1.0rc2/../output/arm\_linux/bin

strip: Unable to recognise the format of the input file

\`/home/hxy/MPlayer/MPlayer-1.0rc2/../output/arm\_linux/bin/mplayer'

查资料看install带-s 参数时会自动调用strip来strip应用程序。但是arm编译时要调用arm-linux-strip才有正确处理。解决办法是取消-s参数，查看Makefile可以发现-s是如下

$(INSTALL) -m 755 $(INSTALLSTRIP) mplayer$(EXESUF)     $(BINDIR)

的INSTALLSTRIP设置的，它默认是-s,因此只要简单在Makefile的前面(95行)加入

INSTALLSTRIP :=  \#将其置为空即可惟

4.执行:

export LD\_LIBRARY\_PATH=$\{LIB\};./mplayer -ac maddemo.mpg

其中$LIB是保存有Mplayer所需的库的路径 -ac mad 是必须,表示强制用libmad解码.

这是我的成功执行一段脚本:

export APP\_ROOT=/mnt/nfs/MPlayer/output/arm\_linux

export LD\_LIBRARY\_PATH=$APP\_ROOT，OOT/lib;./mplayer -ac mad 2.mpg

测试mpg,avi,mp3,mp4均可播放，默认是按视频的原始分辨率播放的。如果想让MPlayer完整在LCD上显示，可以用video filter 参数 scale来设置

./mplayer -vf scale=240:320

另外有人测试发现在有一些开发板下.Mplayer播放后,输出会干扰后续shell的执行行.用下面比较长的参数一般没事

export APP\_ROOT=/mnt/nfs/MPlayer/output/arm\_linux

export LD\_LIBRARY\_PATH=$APP\_ROOT，OOT/lib;./mplayer -ac mad 2.mpg -quiet \\-vf scale=320:240 2>&1 1>/dev/null &&

如果搞不清自己分辩率的,可在MPlayer用 -fullscreen参数 .或者执行busybox shell命令fbset查看自n己板的分辩率![0b1331709591d260c1c78e86d0c51c18.png][]

[0b1331709591d260c1c78e86d0c51c18.png]: /images/20221020/60e428faf6a942ebb2e6e55d40aec8b3.png

arm linux ld unsafe,MPlayer在ARM2440开发板的移植

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