[pkg] compile for gtk_3_18 or older

- Resolves: #45

.gitlab-ci.yml

@@ -15,8 +15,8 @@ build_test:
     - mkdir -p /go/src/0xacab.org/leap/
     - ln -s "$(pwd)" ${APP_PATH}
     - cd ${APP_PATH}
-    - go get .
-    - go test ./...
+    - make get
+    - make test
     - make build
   tags:
     - linux

Makefile

-.PHONY: all build icon locales generate_locales clean
+.PHONY: all get build icon locales generate_locales clean
 
-all: icon locales build
+all: icon locales get build
+
+get:
+	go get -tags 'gtk_3_18' .
 
 build:
-	go build -ldflags "-X main.version=`git describe --tags`"
+	go build -tags 'gtk_3_18' -ldflags "-X main.version=`git describe --tags`"
+
+test:
+	go test -tags 'gtk_3_18' ./...
 
 clean:
 	make -C icon clean