Fix compile failed without gcc (go-gitea#3130)

* fix comile failed without gcc

* add sqlite tag for unit test

Makefile

@@ -131,7 +131,8 @@ fmt-check:
 
 .PHONY: test
 test:
-	$(GO) test $(PACKAGES)
+	$(GO) build # test if go build succeed without sqlite support
+	$(GO) test -tags=sqlite $(PACKAGES)
 
 .PHONY: coverage
 coverage:
@@ -142,7 +143,7 @@ coverage:
 
 .PHONY: unit-test-coverage
 unit-test-coverage:
-	for PKG in $(PACKAGES); do $(GO) test -cover -coverprofile $$GOPATH/src/$$PKG/coverage.out $$PKG || exit 1; done;
+	for PKG in $(PACKAGES); do $(GO) test -tags=sqlite -cover -coverprofile $$GOPATH/src/$$PKG/coverage.out $$PKG || exit 1; done;
 
 .PHONY: test-vendor
 test-vendor:

models/unit_tests.go

@@ -15,7 +15,6 @@ import (
 	"github.com/Unknwon/com"
 	"github.com/go-xorm/core"
 	"github.com/go-xorm/xorm"
-	_ "github.com/mattn/go-sqlite3" // for the test engine
 	"github.com/stretchr/testify/assert"
 	"gopkg.in/testfixtures.v2"
 )

modules/test/context_tests.go

@@ -14,7 +14,6 @@ import (
 	"code.gitea.io/gitea/modules/context"
 
 	"github.com/go-macaron/session"
-	_ "github.com/mattn/go-sqlite3" // for the test engine
 	"github.com/stretchr/testify/assert"
 	"gopkg.in/macaron.v1"
 )