pdf_writer.c:(.text+0x42e): undefined reference to `MD5‘
ref: https://packages.ubuntu.com/xenial/amd64/libssl-dev/filelist
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=802235
don't know the problem
原文：https://www.cnblogs.com/uceec00/p/13174988.html
