~ $ sudo port install ngrok
--->  Computing dependencies for ngrok
--->  Fetching archive for ngrok
--->  Attempting to fetch ngrok-1.6_0.darwin_13.x86_64.tbz2 from http://lil.fr.packages.macports.org/ngrok
--->  Attempting to fetch ngrok-1.6_0.darwin_13.x86_64.tbz2 from http://mse.uk.packages.macports.org/sites/packages.macports.org/ngrok
--->  Attempting to fetch ngrok-1.6_0.darwin_13.x86_64.tbz2 from http://nue.de.packages.macports.org/macports/packages/ngrok
--->  Fetching distfiles for ngrok
--->  Verifying checksums for ngrok
--->  Extracting ngrok
--->  Configuring ngrok
--->  Building ngrok
Error: org.macports.build for port ngrok returned: command execution failed
Please see the log file for port ngrok for details:
    /opt/local/var/macports/logs/_Users_breun_Projects_ports_net_ngrok/ngrok/main.log
To report a bug, follow the instructions in the guide:
    http://guide.macports.org/#project.tickets
Error: Processing of port ngrok failed
~ $ cd /opt/local/var/macports/build/_Users_breun_Projects_ports_net_ngrok/ngrok/work/ngrok-1.6 && sudo make -j4 -w all
make: Entering directory `/opt/local/var/macports/build/_Users_breun_Projects_ports_net_ngrok/ngrok/work/ngrok-1.6'
go fmt ngrok/...
go get -tags '' -d -v ngrok/...
code.google.com/p/log4go (download)
github.com/garyburd/go-websocket (download)
github.com/inconshreveable/go-metrics (download)
github.com/nsf/termbox-go (download)
go install -tags '' ngrok/main/ngrok
go install -tags '' ngrok/main/ngrokd
make: Leaving directory `/opt/local/var/macports/build/_Users_breun_Projects_ports_net_ngrok/ngrok/work/ngrok-1.6'
$ sudo port install ngrok
--->  Computing dependencies for ngrok
--->  Building ngrok
--->  Staging ngrok into destroot
--->  Installing ngrok @1.6_0
--->  Activating ngrok @1.6_0
--->  Cleaning ngrok
--->  Updating database of binaries: 100.0%
--->  Scanning binaries for linking errors: 100.0%
--->  No broken files found.
~ $ ngrok version
1.6