all: add go:build lines

accounts/keystore/watch.go

@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
+//go:build (darwin && !ios && cgo) || freebsd || (linux && !arm64) || netbsd || solaris
 // +build darwin,!ios,cgo freebsd linux,!arm64 netbsd solaris
 
 package keystore

accounts/keystore/watch_fallback.go

@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
+//go:build (darwin && !cgo) || ios || (linux && arm64) || windows || (!darwin && !freebsd && !linux && !netbsd && !solaris)
 // +build darwin,!cgo ios linux,arm64 windows !darwin,!freebsd,!linux,!netbsd,!solaris
 
 // This is the fallback implementation of directory watching.

cmd/utils/diskusage.go

@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
+//go:build !windows && !openbsd
 // +build !windows,!openbsd
 
 package utils

cmd/utils/diskusage_openbsd.go

@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
+//go:build openbsd
 // +build openbsd
 
 package utils

common/fdlimit/fdlimit_bsd.go

@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
+//go:build freebsd || dragonfly
 // +build freebsd dragonfly
 
 package fdlimit

common/fdlimit/fdlimit_unix.go

@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
+//go:build linux || netbsd || openbsd || solaris
 // +build linux netbsd openbsd solaris
 
 package fdlimit

core/mkalloc.go

@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
+//go:build none
 // +build none
 
 /*

crypto/blake2b/blake2bAVX2_amd64.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build go1.7 && amd64 && !gccgo && !appengine
 // +build go1.7,amd64,!gccgo,!appengine
 
 package blake2b

crypto/blake2b/blake2b_amd64.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build !go1.7 && amd64 && !gccgo && !appengine
 // +build !go1.7,amd64,!gccgo,!appengine
 
 package blake2b

crypto/blake2b/blake2b_f_fuzz.go

@@ -1,3 +1,4 @@
+//go:build gofuzz
 // +build gofuzz
 
 package blake2b

crypto/blake2b/blake2b_ref.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build !amd64 || appengine || gccgo
 // +build !amd64 appengine gccgo
 
 package blake2b

crypto/blake2b/register.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build go1.9
 // +build go1.9
 
 package blake2b

crypto/bls12381/arithmetic_decl.go

@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
+//go:build (amd64 && blsasm) || (amd64 && blsadx)
 // +build amd64,blsasm amd64,blsadx
 
 package bls12381

crypto/bls12381/arithmetic_x86_adx.go

@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
+//go:build amd64 && blsadx
 // +build amd64,blsadx
 
 package bls12381

crypto/bls12381/arithmetic_x86_noadx.go

@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
+//go:build amd64 && blsasm
 // +build amd64,blsasm
 
 package bls12381

crypto/bn256/bn256_fast.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be found
 // in the LICENSE file.
 
+//go:build amd64 || arm64
 // +build amd64 arm64
 
 // Package bn256 implements the Optimal Ate pairing over a 256-bit Barreto-Naehrig curve.

crypto/bn256/bn256_slow.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be found
 // in the LICENSE file.
 
+//go:build !amd64 && !arm64
 // +build !amd64,!arm64
 
 // Package bn256 implements the Optimal Ate pairing over a 256-bit Barreto-Naehrig curve.

crypto/bn256/cloudflare/gfp_decl.go

@@ -1,3 +1,4 @@
+//go:build (amd64 && !generic) || (arm64 && !generic)
 // +build amd64,!generic arm64,!generic
 
 package bn256

crypto/bn256/cloudflare/gfp_generic.go

@@ -1,3 +1,4 @@
+//go:build (!amd64 && !arm64) || generic
 // +build !amd64,!arm64 generic
 
 package bn256

crypto/secp256k1/dummy.go

@@ -1,3 +1,4 @@
+//go:build dummy
 // +build dummy
 
 // This file is part of a workaround for `go mod vendor` which won't vendor

crypto/secp256k1/panic_cb.go

@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be found in
 // the LICENSE file.
 
-// +build !gofuzz
-// +build cgo
+//go:build !gofuzz && cgo
+// +build !gofuzz,cgo
 
 package secp256k1
 

crypto/secp256k1/scalar_mult_cgo.go

@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be found in
 // the LICENSE file.
 
-// +build !gofuzz
-// +build cgo
+//go:build !gofuzz && cgo
+// +build !gofuzz,cgo
 
 package secp256k1
 

crypto/secp256k1/scalar_mult_nocgo.go

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be found in
 // the LICENSE file.
 
+//go:build gofuzz || !cgo
 // +build gofuzz !cgo
 
 package secp256k1

crypto/secp256k1/secp256.go

@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be found in
 // the LICENSE file.
 
-// +build !gofuzz
-// +build cgo
+//go:build !gofuzz && cgo
+// +build !gofuzz,cgo
 
 // Package secp256k1 wraps the bitcoin secp256k1 C library.
 package secp256k1

crypto/signature_cgo.go

@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
+//go:build !nacl && !js && cgo && !gofuzz
 // +build !nacl,!js,cgo,!gofuzz
 
 package crypto

crypto/signature_nocgo.go

@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
+//go:build nacl || js || !cgo || gofuzz
 // +build nacl js !cgo gofuzz
 
 package crypto

crypto/signify/signify_fuzz.go

@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
+//go:build gofuzz
 // +build gofuzz
 
 package signify

ethdb/leveldb/leveldb.go

@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
+//go:build !js
 // +build !js
 
 // Package leveldb implements the key-value database layer based on LevelDB.

internal/debug/loudpanic.go

@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
+//go:build go1.6
 // +build go1.6
 
 package debug

internal/debug/loudpanic_fallback.go

@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
+//go:build !go1.6
 // +build !go1.6
 
 package debug

internal/debug/trace.go

@@ -14,7 +14,8 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
-//+build go1.5
+//go:build go1.5
+// +build go1.5
 
 package debug
 

internal/debug/trace_fallback.go

@@ -14,7 +14,8 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
-//+build !go1.5
+//go:build !go1.5
+// +build !go1.5
 
 // no-op implementation of tracing methods for Go < 1.5.
 

log/handler_go13.go

@@ -1,3 +1,4 @@
+//go:build !go1.4
 // +build !go1.4
 
 package log

log/handler_go14.go

@@ -1,3 +1,4 @@
+//go:build go1.4
 // +build go1.4
 
 package log

log/syslog.go

@@ -1,3 +1,4 @@
+//go:build !windows && !plan9
 // +build !windows,!plan9
 
 package log

metrics/cpu_disabled.go

@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
+//go:build ios || js
 // +build ios js
 
 package metrics

metrics/cpu_enabled.go

@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
+//go:build !ios && !js
 // +build !ios,!js
 
 package metrics

metrics/cputime_nop.go

@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
+//go:build windows || js
 // +build windows js
 
 package metrics

metrics/cputime_unix.go

@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
+//go:build !windows && !js
 // +build !windows,!js
 
 package metrics

metrics/disk_nop.go

@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
+//go:build !linux
 // +build !linux
 
 package metrics

metrics/runtime_cgo.go

@@ -1,3 +1,4 @@
+//go:build cgo && !appengine && !js
 // +build cgo,!appengine,!js
 
 package metrics

metrics/runtime_gccpufraction.go

@@ -1,3 +1,4 @@
+//go:build go1.5
 // +build go1.5
 
 package metrics

metrics/runtime_no_cgo.go

@@ -1,3 +1,4 @@
+//go:build !cgo || appengine || js
 // +build !cgo appengine js
 
 package metrics

metrics/runtime_no_gccpufraction.go

@@ -1,3 +1,4 @@
+//go:build !go1.5
 // +build !go1.5
 
 package metrics

metrics/syslog.go

@@ -1,3 +1,4 @@
+//go:build !windows
 // +build !windows
 
 package metrics

mobile/geth_android.go

@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
+//go:build android
 // +build android
 
 package geth

mobile/geth_ios.go

@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
+//go:build ios
 // +build ios
 
 package geth

mobile/geth_other.go

@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
+//go:build !android && !ios
 // +build !android,!ios
 
 package geth

p2p/netutil/toobig_notwindows.go

@@ -14,7 +14,8 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
-//+build !windows
+//go:build !windows
+// +build !windows
 
 package netutil
 

p2p/netutil/toobig_windows.go

@@ -14,7 +14,8 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
-//+build windows
+//go:build windows
+// +build windows
 
 package netutil
 

rlp/safe.go

@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
+//go:build nacl || js || !cgo
 // +build nacl js !cgo
 
 package rlp