I had to make following change to allow gofmt in Makefile to work in gofmt 1.3.3(fedora 21).
following is the error log
[tjyang@fedora21 novm]$ !719
gofmt -l=true -w=true -tabs=false -tabwidth=4 src/novmm/*
flag provided but not defined: -tabs
usage: gofmt [flags] [path ...]
-cpuprofile="": write cpu profile to this file
-d=false: display diffs instead of rewriting files
-e=false: report all errors (not just the first 10 on different lines)
-l=false: list files whose formatting differs from gofmt's
-r="": rewrite rule (e.g., 'a[b:len(a)] -> a[b:]')
-s=false: simplify code
-w=false: write result to (source) file instead of stdout
[tjyang@fedora21 novm]$
I had to make following change to allow gofmt in Makefile to work in gofmt 1.3.3(fedora 21).
following is the error log
https://github.com/tjyang/novm/compare/google:master...master#diff-b67911656ef5d18c4ae36cb6741b7965L61