Install from source for 4.5 stalled at a point

On OSX el capitan 10.11.5, I try to install the server from source but keeps hanging at the process Building Go target cbq-engine using Go 1.4.2 without error or exit.

released/4.5.0.xml

-- Building app.min.js and index.min.html ...
[100%] Built target minify
Scanning dependencies of target all_images
[100%] Generating ../priv/public/js/all-images.js
[100%] Built target all_images
Scanning dependencies of target n1ql-yacc
[100%] Build Go yacc target n1ql-yacc using Go 1.5.2
-- Executing: /bin/go tool yacc n1ql.y
[100%] Built target n1ql-yacc
Scanning dependencies of target cbq-engine
[100%] Building Go target cbq-engine using Go 1.4.2
-- Executing: /Users/z/.cbdepscache/exploded/x86_64/go-1.4.2/go/bin/go install  -tags="community" -gcflags="" -ldflags=""   github.com/couchbase/query/server/cbq-engine

released/4.5.0-MP1.xml

[100%] Built target ns_minify
-- Building app.min.js and index.min.html ...
[100%] Built target minify
[100%] Built target all_images
[100%] Built target n1ql-yacc
[100%] Building Go target cbq-engine using Go 1.4.2
-- Executing: /Users/z/.cbdepscache/exploded/x86_64/go-1.4.2/go/bin/go install  -tags="community" -gcflags="" -ldflags=""   github.com/couchbase/query/server/cbq-engine

I’ve left it run for more than 30mins but nothing. make -d also shows no error.

Anyway to complete this installation?