问题
I am trying to install Git-core with svn to my Mac unsuccessfully by
$ sudo port install git-core +svn
---> Verifying checksum(s) for db46
Error: Checksum (md5) mismatch for patch.4.6.21.3
Error: Target org.macports.checksum returned: Unable to verify file checksums
Error: The following dependencies failed to build: p5-svn-simple subversion-perlbindings apr-util db46 sqlite3 cyrus-sasl2 neon serf subversion p5-term-readkey
Error: Status 1 encountered during processing.
I have tried to solve the problem unsuccessfully by
sudo port -f clean --all {neon, subversion,...}
How can you solve the problem?
Solved:
A program called Peerguardian blocked the installation. When I removed it, everything works now. Great thanks to all repliers!
回答1:
It's failing because there was an error building db46; specifically, there was a problem in checksumming the patch files that were downloaded by the port utility. It looks like it may be an issue with the port, but I just built db46 without any problem. Have you updated your ports tree recently? You can try doing this:
$ sudo port selfupdate # updates the ports tree and port utility
$ sudo port install git +svn # installs git
回答2:
Oracle recently silently changed their patch so the checksums do not match. That's been fixed in MacPorts, so if you self update, then it'll work correctly.
来源：https://stackoverflow.com/questions/765959/unable-to-install-git-coresvn-by-macports