学习总结

od -c 命令可以显示一个文件每一个字节内容

android NDK中编译PNG库时，引用库而不是PNG库要加-z, 否则会报如下错误

../libpng.so: undefined reference to `deflate' 
.../libpng.so: undefined reference to `inflate' 
.../libpng.so: undefined reference to `inflateInit_' 
.../libpng.so: undefined reference to `crc32' 
.../libpng.so: undefined reference to `deflateInit2_' 
.../libpng.so: undefined reference to `inflateReset' 
.../libpng.so: undefined reference to `deflateReset' 
.../libpng.so: undefined reference to `inflateEnd' 
.../libpng.so: undefined reference to `deflateEnd'