ld: error: ../../lib/libalpm/.libs/libalpm.so: undefined reference to MD5_Final
ld: error: ../../lib/libalpm/.libs/libalpm.so: undefined reference to MD5_Init
ld: error: ../../lib/libalpm/.libs/libalpm.so: undefined reference to MD5_Update
ld: error: ../../lib/libalpm/.libs/libalpm.so: undefined reference to SHA256_Final
ld: error: ../../lib/libalpm/.libs/libalpm.so: undefined reference to SHA256_Init
ld: error: ../../lib/libalpm/.libs/libalpm.so: undefined reference to SHA256_Update
http://beefy6.nyi.freebsd.org/data/121amd64-default/529299/logs/errors/pacman-5.1.3.log
Add missing -lcrypto to SSL_LIBS and make sure libalpm is linked
directly with it instead of indirectly through dependencies.