Merge pull request #4896 from filecoin-project/upg/go

Update go to 1.15.5

.circleci/config.yml

@@ -5,7 +5,7 @@ orbs:
 executors:
   golang:
     docker:
-      - image: circleci/golang:1.14.6
+      - image: circleci/golang:1.15.5
     resource_class: 2xlarge
   ubuntu:
     docker:
@@ -294,8 +294,8 @@ jobs:
       - run:
           name: Install go
           command: |
-            curl -O https://dl.google.com/go/go1.14.2.darwin-amd64.pkg && \
-            sudo installer -pkg go1.14.2.darwin-amd64.pkg -target /
+            curl -O https://dl.google.com/go/go1.15.5.darwin-amd64.pkg && \
+            sudo installer -pkg go1.15.5.darwin-amd64.pkg -target /
       - run:
           name: Install pkg-config
           command: HOMEBREW_NO_AUTO_UPDATE=1 brew install pkg-config

Makefile

@@ -5,10 +5,10 @@ all: build
 
 unexport GOFLAGS
 
-GOVERSION:=$(shell go version | cut -d' ' -f 3 | cut -d. -f 2)
-ifeq ($(shell expr $(GOVERSION) \< 14), 1)
-$(warning Your Golang version is go 1.$(GOVERSION))
-$(error Update Golang to version $(shell grep '^go' go.mod))
+GOVERSION:=$(shell go version | cut -d' ' -f 3  | awk -F. '{printf "%d%03d", $$2, $$3}')
+ifeq ($(shell expr $(GOVERSION) \< 15005), 1)
+$(warning Your Golang version is go 1.$(shell expr $(GOVERSION) / 1000).$(shell expr $(GOVERSION) % 1000))
+$(error Update Golang to version to at least 1.15.5)
 endif
 
 # git modules that need to be loaded