From ae674a3660ff7655c9b79bf0c01af0a363efdf4d Mon Sep 17 00:00:00 2001
From: Hyung-Kyu Hqueue Choi <9247907+hqueue@users.noreply.github.com>
Date: Tue, 24 Jul 2018 09:11:51 +0900
Subject: [PATCH] Makefile: clean go build cache (#17079)

---
 Makefile                      |  1 +
 build/clean_go_build_cache.sh | 10 ++++++++++
 2 files changed, 11 insertions(+)
 create mode 100755 build/clean_go_build_cache.sh

diff --git a/Makefile b/Makefile
index 5cb9231a1..0c1bb3bce 100644
--- a/Makefile
+++ b/Makefile
@@ -41,6 +41,7 @@ lint: ## Run linters.
 	build/env.sh go run build/ci.go lint
 
 clean:
+	./build/clean_go_build_cache.sh
 	rm -fr build/_workspace/pkg/ $(GOBIN)/*
 
 # The devtools target installs tools required for 'go generate'.
diff --git a/build/clean_go_build_cache.sh b/build/clean_go_build_cache.sh
new file mode 100755
index 000000000..e6a523fb4
--- /dev/null
+++ b/build/clean_go_build_cache.sh
@@ -0,0 +1,10 @@
+#!/bin/sh
+
+function version_gt() { test "$(printf '%s\n' "$@" | sort -V | head -n 1)" != "$1"; }
+
+golang_version=$(go version |cut -d' ' -f3 |sed 's/go//')
+
+# Clean go build cache when go version is greater than or equal to 1.10
+if !(version_gt 1.10 $golang_version); then
+    go clean -cache
+fi