7fa699e159
This changes the build script to build all the things in one go
invocation, instead of one invocation per cmd. This is a lot faster
because it means more things get compiled concurrently. It's especially
a lot faster when things *don't* need to be rebuilt, possibly because it
only needs to build the dependency map and such once instead of once per
binary.
In order for this to work we need to be able to pass the same ldflags to
all the binaries. This means we can't set the program name with an
ldflag.
When it needs to rebuild everything (go clean -cache):
( ./old-build -gocmd go1.14.2 build all 2> /dev/null; ) 65.82s user 11.28s system 574% cpu 13.409 total
( ./new-build -gocmd go1.14.2 build all 2> /dev/null; ) 63.26s user 7.12s system 1220% cpu 5.766 total
On a subsequent run (nothing to build, just link the binaries):
( ./old-build -gocmd go1.14.2 build all 2> /dev/null; ) 26.58s user 7.53s system 582% cpu 5.853 total
( ./new-build -gocmd go1.14.2 build all 2> /dev/null; ) 18.66s user 2.45s system 1090% cpu 1.935 total
87 lines
2.6 KiB
Go
87 lines
2.6 KiB
Go
// Copyright (C) 2019 The Syncthing Authors.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this file,
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// You can obtain one at https://mozilla.org/MPL/2.0/.
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package build
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import (
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"fmt"
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"log"
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"regexp"
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"runtime"
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"strconv"
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"strings"
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"time"
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)
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var (
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// Injected by build script
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Version = "unknown-dev"
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Host = "unknown"
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User = "unknown"
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Stamp = "0"
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// Static
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Codename = "Fermium Flea"
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// Set by init()
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Date time.Time
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IsRelease bool
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IsCandidate bool
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IsBeta bool
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LongVersion string
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// Set by Go build tags
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Tags []string
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allowedVersionExp = regexp.MustCompile(`^v\d+\.\d+\.\d+(-[a-z0-9]+)*(\.\d+)*(\+\d+-g[0-9a-f]+)?(-[^\s]+)?$`)
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)
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func init() {
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if Version != "unknown-dev" {
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// If not a generic dev build, version string should come from git describe
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if !allowedVersionExp.MatchString(Version) {
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log.Fatalf("Invalid version string %q;\n\tdoes not match regexp %v", Version, allowedVersionExp)
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}
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}
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setBuildData()
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}
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func setBuildData() {
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// Check for a clean release build. A release is something like
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// "v0.1.2", with an optional suffix of letters and dot separated
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// numbers like "-beta3.47". If there's more stuff, like a plus sign and
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// a commit hash and so on, then it's not a release. If it has a dash in
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// it, it's some sort of beta, release candidate or special build. If it
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// has "-rc." in it, like "v0.14.35-rc.42", then it's a candidate build.
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//
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// So, every build that is not a stable release build has IsBeta = true.
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// This is used to enable some extra debugging (the deadlock detector).
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//
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// Release candidate builds are also "betas" from this point of view and
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// will have that debugging enabled. In addition, some features are
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// forced for release candidates - auto upgrade, and usage reporting.
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exp := regexp.MustCompile(`^v\d+\.\d+\.\d+(-[a-z]+[\d\.]+)?$`)
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IsRelease = exp.MatchString(Version)
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IsCandidate = strings.Contains(Version, "-rc.")
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IsBeta = strings.Contains(Version, "-")
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stamp, _ := strconv.Atoi(Stamp)
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Date = time.Unix(int64(stamp), 0)
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LongVersion = LongVersionFor("syncthing")
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}
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// LongVersionFor returns the long version string for the given program name.
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func LongVersionFor(program string) string {
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// This string and date format is essentially part of our external API. Never change it.
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date := Date.UTC().Format("2006-01-02 15:04:05 MST")
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v := fmt.Sprintf(`%s %s "%s" (%s %s-%s) %s@%s %s`, program, Version, Codename, runtime.Version(), runtime.GOOS, runtime.GOARCH, User, Host, date)
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if len(Tags) > 0 {
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v = fmt.Sprintf("%s [%s]", v, strings.Join(Tags, ", "))
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}
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return v
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}
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