tools: remove go:build ignore and put xprog into new package

BUILD.bazel

@@ -14,7 +14,6 @@ exports_files([
 # gazelle:exclude build/linter/staticcheck
 # gazelle:exclude vendor
 # gazelle:exclude tools/patch-go
-# gazelle:exclude tools/check
 # gazelle:resolve go github.com/bazelbuild/buildtools/build @com_github_bazelbuild_buildtools//build:go_default_library
 gazelle(name = "gazelle")
 

Makefile

@@ -302,9 +302,9 @@ tools/bin/ut: tools/check/ut.go
 	$(GO) build -o ../bin/ut ut.go
 
 .PHONY: tools/bin/xprog
-tools/bin/xprog: tools/check/xprog.go
-	cd tools/check; \
-	$(GO) build -o ../bin/xprog xprog.go
+tools/bin/xprog: tools/check/xprog/xprog.go
+	cd tools/check/xprog; \
+	$(GO) build -o ../../bin/xprog xprog.go
 
 .PHONY: tools/bin/revive
 tools/bin/revive:

tools/check/BUILD.bazel

@@ -1,19 +1,18 @@
-load("@io_bazel_rules_go//go:def.bzl", "go_library")
+load("@io_bazel_rules_go//go:def.bzl", "go_binary", "go_library")
 
 go_library(
     name = "ut_lib",
     srcs = ["ut.go"],
-    importpath = "github.com/pingcap/tidb/cmd/tidb-server",
+    importpath = "github.com/pingcap/tidb/tools/check",
     visibility = ["//visibility:private"],
     deps = [
-        "@org_golang_x_tools//cover:go_default_library",
-        "@org_uber_go_automaxprocs//maxprocs",
+        "@org_golang_x_tools//cover",
+        "@org_uber_go_automaxprocs//:automaxprocs",
     ],
 )
 
-go_library(
-    name = "xprog_lib",
-    srcs = ["xprog.go"],
-    importpath = "github.com/pingcap/tidb/cmd/tidb-server",
-    visibility = ["//visibility:private"],
+go_binary(
+    name = "ut-server",
+    embed = [":ut_lib"],
+    visibility = ["//visibility:public"],
 )

tools/check/ut.go

@@ -12,8 +12,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-//go:build ignore
-
 package main
 
 import (
@@ -427,7 +425,7 @@ func handleFlags(flag string) string {
 
 func handleFlag(f string) (found bool) {
 	tmp := os.Args[:0]
-	for range len(os.Args) {
+	for i := range len(os.Args) {
 		if os.Args[i] == f {
 			found = true
 			continue
@@ -1009,7 +1007,7 @@ func filter(input []string, f func(string) bool) []string {
 }
 
 func shuffle(tasks []task) {
-	for range len(tasks) {
+	for i := range len(tasks) {
 		pos := rand.Intn(len(tasks))
 		tasks[i], tasks[pos] = tasks[pos], tasks[i]
 	}

tools/check/xprog/BUILD.bazel

@@ -0,0 +1,14 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_binary", "go_library")
+
+go_library(
+    name = "xprog_lib",
+    srcs = ["xprog.go"],
+    importpath = "github.com/pingcap/tidb/tools/check/xprog",
+    visibility = ["//visibility:private"],
+)
+
+go_binary(
+    name = "xprog",
+    embed = [":xprog_lib"],
+    visibility = ["//visibility:public"],
+)

tools/check/xprog.go → tools/check/xprog/xprog.go

@@ -12,8 +12,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-//go:build ignore
-
 package main
 
 import (