When trying to use gcj-dbtool (SVN rev. 116230) on x86_64, this happens: gcj-dbtool -f ecj.db ecj.jar /usr/lib64/libecj.so.3 error: could not update ecj.db: java.security.NoSuchAlgorithmException: MD5 Works as expected with the same gcc/gcj on normal x86.
The problem is that classpath.security gets installed to /usr/lib/security only, but not /usr/lib64/security. Running cp /usr/lib/security/classpath.secruity /usr/lib64/security after installing gcc fixes it.
This looks related to PR 27890. FWIW I thought we no longer needed a .security file to be installed.
Fixed on trunk by commit for PR 27890.