59 lines
2.5 KiB
Plaintext
59 lines
2.5 KiB
Plaintext
The Go programming language is an open source project to make
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programmers more productive. Go is expressive, concise, clean,
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and efficient. Its concurrency mechanisms make it easy to write
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programs that get the most out of multicore and networked machines,
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while its novel type system enables flexible and modular program
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construction. Go compiles quickly to machine code yet has the
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convenience of garbage collection and the power of run-time
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reflection. It's a fast, statically typed, compiled language that
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feels like a dynamically typed, interpreted language.
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The tools are added to the path by putting go.sh and go.csh files in
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/etc/profile.d and letting the system's /etc/profile or /etc/csh.login
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pick it up. If you want to add any of Go's environment variables you
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can add them there.
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Also, to easily setup a user-independent path for Go libraries to
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be installed to and used, is the GOPATH environment variable. This
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variable can be colon delimited. For example, once installing the
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built google-go-lang package, then set in your user's ~/.bashrc
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something like:
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export GOPATH="$HOME"
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Then, you'll be able to use the `go` command to install an additional
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library that will not need root permission and will be in the
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compiler's path. Like so:
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go get golang.org/x/tools/cmd/godoc
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Now in ~/src you'll have this source code checked-out, and a binary
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built at ~/bin/godoc
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Since the golang idiom is very `go get'able as a limited user,
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installed libraries from slackbuilds.org are located outside of GOROOT
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(which is only for golang standard library), in /usr/share/gocode By
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not setting a system-wide GOPATH defaulting to this location, then
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it is up to the user of whether to include this system path as well,
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like:
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export GOPATH="$HOME:/usr/share/gocode"
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This system source directory is primarly only for buildtime of
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slackbuilds.
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This is because `go get' iterates through the paths provided, looking
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for matching imports. If a match is not found, then is cloned to the
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first path provided. You would not want this to be a system path, as
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to need root privilege to clone source.
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As of go1.2, the 'go doc ...' command has been relocated to the
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go.tools library (golang-googlecode-gotools), which provide `godoc`.
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As of go1.5, shared libraries are now supported. The flags to use
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linking are available for `go get`, `go install` and `go build`.
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To learn more see `go help buildmode`.
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To elect to run the buildtime tests of this package, provide the
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environment variable RUN_TEST=true at build time.
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