Pull request 2029: 6247-amd64-levels

Updates #6247.

Squashed commit of the following:

commit 81bcde806688cb1d8991d1e6069c1a8d5c1ed21b
Merge: 5c60b76a6 8842b2df9
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Mon Oct 9 13:17:27 2023 +0300

    Merge branch 'master' into 6247-amd64-levels

commit 5c60b76a6005dd4ef95969d1cde0c94ac24b8f66
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Fri Oct 6 19:20:46 2023 +0300

    scripts: upd docs

commit 2808203f1ad02adbe936ee6d5712a922b3c7840c
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Fri Oct 6 17:55:43 2023 +0300

    all: add goamd64

Makefile

@@ -24,6 +24,7 @@ CHANNEL = development
 CLIENT_DIR = client
 COMMIT = $$( git rev-parse --short HEAD )
 DIST_DIR = dist
+GOAMD64 = v1
 GOPROXY = https://goproxy.cn|https://proxy.golang.org|direct
 GOSUMDB = sum.golang.google.cn
 GPG_KEY = devteam@adguard.com
@@ -61,6 +62,7 @@ ENV = env\
 	GPG_KEY_PASSPHRASE='$(GPG_KEY_PASSPHRASE)'\
 	DIST_DIR='$(DIST_DIR)'\
 	GO="$(GO.MACRO)"\
+	GOAMD64="$(GOAMD64)"\
 	GOPROXY='$(GOPROXY)'\
 	GOSUMDB='$(GOSUMDB)'\
 	PATH="$${PWD}/bin:$$( "$(GO.MACRO)" env GOPATH )/bin:$${PATH}"\

scripts/README.md

@@ -120,6 +120,9 @@ Optional environment:
 
 Optional environment:
 
+ *  `GOAMD64`: architectural level for [AMD64][amd64].  The default value is
+    `v1`.
+
  *  `GOARM`: ARM processor options for the Go compiler.
 
  *  `GOMIPS`: ARM processor options for the Go compiler.
@@ -146,7 +149,8 @@ Required environment:
 
  *  `CHANNEL`: release channel, see above.
 
-[repr]: https://reproducible-builds.org/docs/source-date-epoch/
+[amd64]: https://github.com/golang/go/wiki/MinimumRequirements#amd64
+[repr]:  https://reproducible-builds.org/docs/source-date-epoch/