标题:qt中处理jpeg
作者:ww2000e
日期:2009-09-28 22:53
内容:
videocapture.cpp:(.text+0x190): undefined reference to `jpeg_std_error(jpeg_error_mgr*)'
videocapture.cpp:(.text+0x1a8): undefined reference to `jpeg_CreateCompress(jpeg_compress_struct*, int, unsigned int)'
videocapture.cpp:(.text+0x1d0): undefined reference to `jpeg_set_defaults(jpeg_compress_struct*)'
videocapture.cpp:(.text+0x1e0): undefined reference to `jpeg_set_quality(jpeg_compress_struct*, int, int)'
videocapture.cpp:(.text+0x1ec): undefined reference to `jpeg_start_compress(jpeg_compress_struct*, int)'
videocapture.cpp:(.text+0x200): undefined reference to `jpeg_write_scanlines(jpeg_compress_struct*, unsigned char**, unsigned int)'
videocapture.cpp:(.text+0x22c): undefined reference to `jpeg_finish_compress(jpeg_compress_struct*)'
videocapture.cpp:(.text+0x250): undefined reference to `jpeg_destroy_compress(jpeg_compress_struct*)'
videocapture.cpp:(.text+0x278): undefined reference to `jpeg_destroy_compress(jpeg_compress_struct*)'
-ljpeg也加了 ，so文件也有，总是这样提示编不过去，qt要怎么用ligjpeg啊？
#1 [mecland 09-30 09:56]
貌似编译QT库时没有编译libjpeg模块
#2 [ww2000e 09-30 15:25]
当时编译时加了-system-jpeg选项 ，用pixmap可以打开个jpeg图片，正不正确？？ 工具链也可以编译一个bmp转jpeg的c程序。