- go1.17beta1 (released 2021-06-10) is a beta version of go1.17 cut from the master branch at the revision tagged go1.17beta1. OBS-URL: https://build.opensuse.org/request/show/903995 OBS-URL: https://build.opensuse.org/package/show/devel:languages:go/go1.17?expand=0&rev=1
121 lines
4.8 KiB
Plaintext
121 lines
4.8 KiB
Plaintext
Updated: 05.05.2012
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Authors: Graham Anderson, <graham@andtech.eu>
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PROJECT DETAILS
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---------------
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OBS: https://build.opensuse.org/project/show?project=devel:languages:go
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Maintainers: Sascha Peilicke (saschpe),
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Graham Anderson (andtecheu)
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Wiki: http://en.opensuse.org/Go
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http://en.opensuse.org/openSUSE:Packaging_Go
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GENERAL NOTES
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-------------
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Go toolchain environmental variables are configured via go.sh, which is
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installed to /etc/profile.d/go.sh
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Packaging guidelines and an RPM spec file recipe for packaging third party Go
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libraries can be found on the openSUSE wiki:
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http://en.opensuse.org/openSUSE:Packaging_Go
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The openSUSE go package uses the standard Go distribution toolchain, with a
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a small patchset to modify a few of the toolchain commands to suit our
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environment and packaging needs.
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This means that many of the standard go toolchain commands are not inside a
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users PATH, but rather are invoked and used via the "go" command. Should you
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wish to script or manually use the commands, the install location on a 64 bit
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system is /usr/lib64/go/pkg/tool/linux_amd64
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The "go" tool, the "godoc" document server are inside a users PATH.
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We currently don't support the gccgo implementation, this is not for
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any other reason than contributer and maintainer time constraints.
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GO DOCUMENTATION
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----------------
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As of yet, there are no man pages for the standard Go distribution toolchain,
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please see the documentation provided by the "godoc" command. Man pages are
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slated to be included in the release in future.
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One of the diffs from the maintained patchset adds the distro specific doc and
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source file locations of the *-doc RPM packages to the virtual filesystem of
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the "godoc" documentation server. That is to say, as long as packages follow
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the Go packaging guidelines, API and other documentation should always be
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available via the godoc server if the packages "doc" RPM is installed.
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PACKAGE INSTALL LOCATIONS
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-------------------------
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Go standard library packages are installed to a location in $GOROOT, which is
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defined as /usr/lib64/go on 64bit systems.
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Third party package binaries are installed to the default system wide
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$GOPATH entry. On 64bit systems the location /usr/lib64/go/contrib is used.
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This is specified in the macros.go RPM macro definition file that is part of
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the main Go package and is used for packaging most third party Go libraries.
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The reasons binary packages are installed to a GOPATH entry instead of GOROOT
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are mainly to do with how the Go toolchain prioritises and behaves with
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packages installed to the same location as the Go std library.
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By installing third party packages to a system-wide GOPATH entry location,
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we can ensure that no packages clobber the standard library namespace or file
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tree. Additionally we can support binary only packages, which as of Go 1.1
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will only be supported outside of the $GOROOT.
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There are additional benefits to this location; such as allowing users and
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developers to prioritise linking from their own user defined GOPATH, which
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defaults to $HOME/go configured via /etc/profile.d/go.sh config. This has
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particular benefit for development workflows.
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For Go 1.1 and beyond, building and linking with binary only pacakges will
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only be supported with the following caveat. Package source code must not
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exist in the same GOPATH segment as the binary package .a archive file.
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If both the binary archive (.a) and the package source are installed to the
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same GOPATH segment, then the "go build" or "go install" command will
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prioritise building the software using package sources before using package
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binary archives. A side effect of this is that is actually possible to have
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source code only third party packages.
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To summarise the priority of binary package linking and building:
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1. Any source files or binary packages in $GOROOT are considered first. Any
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binary packages in $GOROOT that are considered "stale" by the build tools
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are ignored in favour of the package source.
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2. $GOPATH is considered next for import statements. GOPATH is a colon
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delimited list of paths. GOPATH segments are examined by the build tools
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in a FIFO manner, left to right.
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Both a system wide and a user GOPATH segment are configured by default,
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the user GOPATH segment takes priority over the system segment to allow
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flexibility for development workflows.
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The default user GOPATH is:
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GOPATH=$HOME/go:$GOROOT/contrib
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The default root user GOPATH is:
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GOPATH=$GOROOT/contrib
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3. For Go < 1.1, If both the source and binary archive is available for a
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package import in the same GOPATH segment, the binary archive will take
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precedence and will be linked during compilation.
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For Go >= 1.1 If the package source is avaiable in the GOPATH segment, it
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will always be used in preference to the binary
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