From aa9134b3b42c8678efe609a0339a616f3c566aaf Mon Sep 17 00:00:00 2001
From: Arve Knudsen <arve.knudsen@gmail.com>
Date: Tue, 27 Oct 2020 13:57:12 +0100
Subject: [PATCH] Fix backend build on Windows (#28557)

* Fix backend build on Windows

Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>

* Fix remaining build.go issues on Windows

Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>
---
 build.go | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/build.go b/build.go
index 2e0beeea31e..82c49814216 100644
--- a/build.go
+++ b/build.go
@@ -451,7 +451,12 @@ func gruntBuildArg(task string) []string {
 }
 
 func setup() {
-	runPrint("go", "install", "-v", "./pkg/cmd/grafana-server")
+	args := []string{"install", "-v"}
+	if goos == windows {
+		args = append(args, "-buildmode=exe")
+	}
+	args = append(args, "./pkg/cmd/grafana-server")
+	runPrint("go", args...)
 }
 
 func printGeneratedVersion() {
@@ -460,7 +465,12 @@ func printGeneratedVersion() {
 
 func test(pkg string) {
 	setBuildEnv()
-	runPrint("go", "test", "-short", "-timeout", "60s", pkg)
+	args := []string{"test", "-short", "-timeout", "60s"}
+	if goos == windows {
+		args = append(args, "-buildmode=exe")
+	}
+	args = append(args, pkg)
+	runPrint("go", args...)
 }
 
 func doBuild(binaryName, pkg string, tags []string) {
@@ -482,6 +492,10 @@ func doBuild(binaryName, pkg string, tags []string) {
 		rmr(binary, binary+".md5")
 	}
 	args := []string{"build", "-ldflags", ldflags()}
+	if goos == windows {
+		// Work around a linking error on Windows: "export ordinal too large"
+		args = append(args, "-buildmode=exe")
+	}
 	if len(tags) > 0 {
 		args = append(args, "-tags", strings.Join(tags, ","))
 	}