PXA255 下摄像头采集程序编译的问题

waterlife2001

PXA255 下摄像头采集程序编译的问题


首先要编译jpeg库
看网上说，编译好jpeg库之后，还要编译minigui库
我先用arm-linux-gcc编译这两个库，结果如下：
[root@localhost lib]# cd /usr/local/arm/3.0/arm-linux/lib
[root@localhost lib]# file libminigui-1.6.so.2.0.0
libminigui-1.6.so.2.0.0: ELF 32-bit LSB shared object, ARM, version 1 (ARM), not stripped
[root@localhost lib]# file libjpeg.so.62.0.0
libjpeg.so.62.0.0: ELF 32-bit LSB shared object, ARM, version 1 (ARM), not stripped

vidcat_OK_1.c 是摄像头采集程序
[root@localhost vidcat_ok]# arm-linux-gcc -o v4l vidcat_OK_1.c

/tmp/ccGOV5Fg.o: In function `put_image_jpeg':

/tmp/ccGOV5Fg.o(.text+0x1198): undefined reference to `jpeg_std_error'

/tmp/ccGOV5Fg.o(.text+0x11ac): undefined reference to `jpeg_CreateCompress'

/tmp/ccGOV5Fg.o(.text+0x11f0): undefined reference to `jpeg_set_defaults'

/tmp/ccGOV5Fg.o(.text+0x1200): undefined reference to `jpeg_set_quality'

/tmp/ccGOV5Fg.o(.text+0x1214): undefined reference to `jpeg_stdio_dest'

/tmp/ccGOV5Fg.o(.text+0x1220): undefined reference to `jpeg_start_compress'

/tmp/ccGOV5Fg.o(.text+0x1270): undefined reference to `jpeg_write_scanlines'
/tmp/ccGOV5Fg.o(.text+0x12e8): undefined reference to `jpeg_write_scanlines'
/tmp/ccGOV5Fg.o(.text+0x1390): undefined reference to `jpeg_finish_compress'
/tmp/ccGOV5Fg.o(.text+0x1398): undefined reference to `jpeg_destroy_compress'
collect2: ld returned 1 exit status

remote fish

第一，楼主的程序要是没有用到 minigui，那么就不是必须编译它。
第二，楼主应该去查找关于 gcc 连接外部库的方法。一个简单的方法是，楼主观察一下 minigui 编译过程中最后一步，它所执行的命令中会包含 jpeg 字样，楼主可以想一想那一段参数的作用是什么

ykai007

ld returned 1 exit status
感觉跟我碰到的问题一样是ld问题

楼主有没有pxa255的相关硬件驱动源代码，能不能发一份给我，万分感谢～～
mail to：ykai007@gamil.com