mini2440 madplay移植出现问题解决

刚刚开始，下决心学习linux，所以找出大学时候就购买的mini2440 拿出来折腾。按照手册一路模仿学习，其中出现不少问题，也都一个一个解决了。可惜那时候没有想来，记录这个过程。这次在学习到手册的第六章6.5嵌入式程序移植实例的时候出现了问题。看如下图：target-x86 里面，我一直都没得到原来的库文件。这篇《友善之臂 madplayer 移植过程补充》也出现过类似的或者说一模一样的问题，把问题解决了，更重要的是分析出来。问题一：仔细一看，出现的错误：configure: error: zlib.h was not found
*** You must first install zlibz（libz） before you can build this package.
*** If libmad is already installed, you may need to use the CPPFLAGS
*** environment variable to specify its installed location, e.g. -I<dir>.然后我网上查找之后得知是缺少了zlib这个库，所以网上找到 zlib-1.2.3.tar.gz 放在Ubuntu里面安装，然后编译libid3tag 这个文件，ok顺利通过了。问题二：接下来libmad文件出现问题报错是：cc1: error: unrecognized command line option "-fforce-mem"
make[2]: *** [version.lo] Error 1
make[2]: Leaving directory `/opt/FriendlyARM/mini2440/madplay/src-x86/libmad-0.15.1b"
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/opt/FriendlyARM/mini2440/madplay/src-x86/libmad-0.15.1b"
make: *** [all] Error 2
百度了一下，原因是GCC3.4以上已经没有-fforce-mem选项，找到相应的makefile，将该选项删除就OK了！具体是：CFLAGS = -Wall -march=i486 -g -O -fforce-mem -fforce-addr -fthread-jumps -fcse-follow-jumps -fcse-skip-blocks -fexpensive-optimizations -fregmove -fschedule-insns2 -fstrength-reduce修改为CFLAGS = -Wall -march=i486 -g -O问题三：编译安装madplay 出现如下问题：checking for sys/soundcard.h... yes
checking machine/soundcard.h usability... no
checking machine/soundcard.h presence... no
checking for machine/soundcard.h... no
checking mad.h usability... no
checking mad.h presence... no
checking for mad.h... no
configure: error: mad.h was not found
*** You must first install libmad before you can build this package.
*** If libmad is already installed, you may need to use the CPPFLAGS
*** environment variable to specify its installed location, e.g. -I<dir>.
根据手册得知这是一个环境变量的问题还有要输进去的“--CPPFLAGS” “--LDFLAGS” 把前面的“--”去掉就好了。到这里应该就没有什么问题了。root@ubuntu:/opt/FriendlyARM/mini2440/madplay# cd target-x86/
root@ubuntu:/opt/FriendlyARM/mini2440/madplay/target-x86# ls
bin include lib man share
root@ubuntu:/opt/FriendlyARM/mini2440/madplay/target-x86# ls bin
abxtest madplay
root@ubuntu:/opt/FriendlyARM/mini2440/madplay/target-x86#