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The Go programming language

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Austin Clements f3b73e040c cmd/dist: fetch version when needed, instead of at init Currently, if there is a VERSION.cache, running make.bash will set runtime.theVersion to the revision as of the last make.bash run instead of the current make.bash run. For example, $ git rev-parse --short HEAD `5c4a86d` $ ./make.bash ... $ cat ../VERSION.cache devel +5c4a86d Tue Feb 10 01:46:30 2015 +0000 $ git checkout `a1dbb92` $ ./make.bash ... $ go version go version devel +5c4a86d Tue Feb 10 01:46:30 2015 +0000 linux/amd64 $ ./make.bash ... $ go version go version devel +a1dbb92 Tue Feb 10 02:31:27 2015 +0000 linux/amd64 This happens because go tool dist reads the potentially stale VERSION.cache into goversion during early initialization; then cleans, which deletes VERSION.cache; then builds the runtime using the stale revision read in to goversion. It isn't until make later in the build process, when make.bash invokes go tool dist again, that VERSION.cache gets updated with the current revision. To address this, simply don't bother fetching the version until go tool dist needs it and don't bother caching the value in memory. This is more robust since it interacts with cleaning in the expected ways. Futhermore, there's no downside to eliminating the in-memory cache; the file system cache is perfectly reasonable for the whole three times make.bash consults it. Change-Id: I8c480100e56bb2db0816e8a088177004d9e87973 Reviewed-on: https://go-review.googlesource.com/4540 Reviewed-by: Russ Cox <rsc@golang.org>		2015-02-11 05:20:58 +00:00
api	runtime: add GODEBUG=gccheckmark=0/1	2015-01-12 16:36:50 +00:00
doc	all: don't refer to code.google.com/p/go{,-wiki}/	2015-02-06 14:41:47 +00:00
include	include/u.h: fix name clash of REG_R* on solaris	2015-02-08 00:04:25 +00:00
lib/time	remove the obsolete lib/codereview.	2014-12-08 07:51:54 +00:00
misc	all: don't refer to code.google.com/p/go{,-wiki}/	2015-02-06 14:41:47 +00:00
src	cmd/dist: fetch version when needed, instead of at init	2015-02-11 05:20:58 +00:00
test	cmd/gc: eliminate dead code in switch statements	2015-02-06 19:05:47 +00:00
.gitattributes	.gitattributes: prevent all magic line ending changes	2014-12-12 23:14:54 +00:00
.gitignore	all: tighten overly-broad runtime/z* gitignore line	2014-12-10 00:45:47 +00:00
AUTHORS	A+C: add another email address for Emil Hessman	2014-11-12 10:01:23 -08:00
CONTRIBUTING.md	doc: direct people to the mailing list	2015-01-18 21:27:07 +00:00
CONTRIBUTORS	C: add Nick Cooper (Google CLA).	2014-11-14 17:03:17 +11:00
favicon.ico	godoc: update favicon	2012-10-11 17:02:36 +11:00
LICENSE
PATENTS
README.md	README: emphasize that we don't accept pull requests	2015-01-08 18:50:47 +00:00
robots.txt

README.md

The Go Programming Language

Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.

For documentation about how to install and use Go, visit https://golang.org/ or load doc/install-source.html in your web browser.

Our canonical Git repository is located at https://go.googlesource.com/go. (There is a mirror of the repository at https://github.com/golang/go.)

Please report issues here: https://golang.org/issue/new

Go is the work of hundreds of contributors. We appreciate your help!

To contribute, please read the contribution guidelines: https://golang.org/doc/contribute.html

Please note that we do not use pull requests.

Unless otherwise noted, the Go source files are distributed under the BSD-style license found in the LICENSE file.

Binary Distribution Notes

If you have just untarred a binary Go distribution, you need to set the environment variable $GOROOT to the full path of the go directory (the one containing this file). You can omit the variable if you unpack it into /usr/local/go, or if you rebuild from sources by running all.bash (see doc/install-source.html). You should also add the Go binary directory $GOROOT/bin to your shell's path.

For example, if you extracted the tar file into $HOME/go, you might put the following in your .profile:

export GOROOT=$HOME/go
export PATH=$PATH:$GOROOT/bin

See https://golang.org/doc/install or doc/install.html for more details.