When mcrypt is compiled, the following error occurs: You need at least libmhash 0.8.15. /configure compile the source code. The following error is returned: checking whether mhash> = 0.8.15... noconfigure: error: "You need at least libmhash 0.8.15 to compile this program. http://mhash.sf.net/"Strange, libmhash installation is mhash-0.9.9.9.tar.gz, how will report such an error, is not found? Www.2cto.com [plain] ln-s/usr/local/lib/libmhash. a/usr/lib/libmhash. a ln-s/usr/local/lib/libmhash. la/usr/lib/libmhash. la ln-s/usr/local/lib/libmhash. so/usr/lib/libmhash. so ln-s/usr/local/lib/libmhash. so.2/usr/lib/libmhash. so.2 ln-s/usr/local/lib/libmhash. so.2.0.1/usr/lib/libmhash. so.2.0.1 does not work after one of the above operations. Open/etc/ld. so. conf and add a line after the file: [html]/usr/local/lib. Then, execute ldconfig and re-compile. Author love _ coder