Speed up make (#10560)

* Speed up make

- stop `find` from venturing into node_modules and other directories
  that do not contain *.go files
- only run `find` once for *.go files
- move image tempdir generation to that task
- rename GOFILES to GO_SOURCES_OWN for consistency and to indicate that
  vendor files are not included
- pre-resolve FOMANTIC_SOURCES

* exclude more

Co-authored-by: Lauris BH <lauris@nix.lv>

Makefile

@@ -27,7 +27,6 @@ else
 	endif
 endif
 
-GOFILES := $(shell find . -name "*.go" -type f ! -path "./vendor/*" ! -path "*/bindata.go")
 GOFMT ?= gofmt -s
 
 GOFLAGS := -v
@@ -64,7 +63,9 @@ LDFLAGS := $(LDFLAGS) -X "main.MakeVersion=$(MAKE_VERSION)" -X "main.Version=$(G
 
 PACKAGES ?= $(filter-out code.gitea.io/gitea/integrations/migration-test,$(filter-out code.gitea.io/gitea/integrations,$(shell GO111MODULE=on $(GO) list -mod=vendor ./... | grep -v /vendor/)))
 
-GO_SOURCES ?= $(shell find . -name "*.go" -type f)
+GO_SOURCES ?= $(shell find . -type d \( -path ./node_modules -o -path ./docs -o -path ./public -o -path ./options -o -path ./contrib -o -path ./data \) -prune -o -type f -name '*.go' -print)
+GO_SOURCES_OWN := $(filter-out ./vendor/% %/bindata.go, $(GO_SOURCES))
+
 WEBPACK_SOURCES ?= $(shell find web_src/js web_src/less -type f)
 WEBPACK_CONFIGS := webpack.config.js .eslintrc .stylelintrc
 
@@ -74,15 +75,13 @@ BINDATA_HASH := $(addsuffix .hash,$(BINDATA_DEST))
 
 WEBPACK_DEST_DIRS := public/js public/css
 
-FOMANTIC_SOURCES ?= $(shell find web_src/fomantic -type f)
+FOMANTIC_SOURCES ?= web_src/fomantic/theme.config.less web_src/fomantic/_site/globals/site.variables
 FOMANTIC_DEST_DIR := public/fomantic
 FOMANTIC_EVIDENCE := $(MAKE_EVIDENCE_DIR)/fomantic
 
 TAGS ?=
 TAGS_EVIDENCE := $(MAKE_EVIDENCE_DIR)/tags
 
-TMPDIR := $(shell mktemp -d 2>/dev/null || mktemp -d -t 'gitea-temp')
-
 #To update swagger use: GO111MODULE=on go get -u github.com/go-swagger/go-swagger/cmd/swagger@v0.20.1
 SWAGGER := GO111MODULE=on $(GO) run -mod=vendor github.com/go-swagger/go-swagger/cmd/swagger
 SWAGGER_SPEC := templates/swagger/v1_json.tmpl
@@ -174,7 +173,7 @@ clean:
 
 .PHONY: fmt
 fmt:
-	$(GOFMT) -w $(GOFILES)
+	$(GOFMT) -w $(GO_SOURCES_OWN)
 
 .PHONY: vet
 vet:
@@ -229,19 +228,19 @@ misspell-check:
 	@hash misspell > /dev/null 2>&1; if [ $$? -ne 0 ]; then \
 		$(GO) get -u github.com/client9/misspell/cmd/misspell; \
 	fi
-	misspell -error -i unknwon,destory $(GOFILES)
+	misspell -error -i unknwon,destory $(GO_SOURCES_OWN)
 
 .PHONY: misspell
 misspell:
 	@hash misspell > /dev/null 2>&1; if [ $$? -ne 0 ]; then \
 		$(GO) get -u github.com/client9/misspell/cmd/misspell; \
 	fi
-	misspell -w -i unknwon $(GOFILES)
+	misspell -w -i unknwon $(GO_SOURCES_OWN)
 
 .PHONY: fmt-check
 fmt-check:
 	# get all go files and run go fmt on them
-	@diff=$$($(GOFMT) -d $(GOFILES)); \
+	@diff=$$($(GOFMT) -d $(GO_SOURCES_OWN)); \
 	if [ -n "$$diff" ]; then \
 		echo "Please run 'make fmt' and commit the result:"; \
 		echo "$${diff}"; \
@@ -569,6 +568,7 @@ update-translations:
 
 .PHONY: generate-images
 generate-images:
+	$(eval TMPDIR := $(shell mktemp -d 2>/dev/null || mktemp -d -t 'gitea-temp'))
 	mkdir -p $(TMPDIR)/images
 	inkscape -f $(PWD)/assets/logo.svg -w 880 -h 880 -e $(PWD)/public/img/gitea-lg.png
 	inkscape -f $(PWD)/assets/logo.svg -w 512 -h 512 -e $(PWD)/public/img/gitea-512.png