community/syncthing: fix tests

community/syncthing/APKBUILD

@@ -18,7 +18,8 @@ options="!strip"
 
 source="$pkgname-$pkgver.tar.gz::https://github.com/$pkgname/$pkgname/archive/v$pkgver.tar.gz
 	$pkgname.confd
-	$pkgname.initd"
+	$pkgname.initd
+	only-test-with-race-when-provided.patch"
 
 builddir="$srcdir/src/github.com/$pkgname/$pkgname"
 
@@ -37,11 +38,9 @@ build() {
 	go run build.go -no-upgrade -version=v$pkgver
 }
 
-# race check fails with musl
 check() {
 	cd "$builddir"
-	# race test will fail due to hardcoded glibc dependency
-	go run build.go -no-upgrade test || true
+	go run build.go -no-upgrade test
 }
 
 package() {
@@ -62,4 +61,5 @@ utils() {
 
 sha512sums="438d3385dc3b9737bc0ec275462b9dc41a630b353443061fddb9e48b184b5cb39e3ccf144fef4e30f4523d1c6a96f2a8a9d87bc27e9734b1f7d7d462c9c15e51  syncthing-0.14.27.tar.gz
 b19cc3d802caa33f4d06852de590d2d984c12cf27d0540162cd7195da4f3f149c83c72e7a10f385b32b27fff6f39d33698e7402442a3f32a9da136c5d19059ae  syncthing.confd
-21fa7b0090e579ad0f02bb8cc9a78736eb99811613823bf12d477262da2281543d07b47ae0888e2e3876a687bf4cab3c89405447373a9c5ab2915989c5f9dce8  syncthing.initd"
+21fa7b0090e579ad0f02bb8cc9a78736eb99811613823bf12d477262da2281543d07b47ae0888e2e3876a687bf4cab3c89405447373a9c5ab2915989c5f9dce8  syncthing.initd
+3fd2b699e07891ae16c67af56d516ba0fde13d5e5d067dd680fc59f9fc5b2f7c5f685b040841588cca6de1f7fb4b094572e5eb73dda8ab30d4b2994d3f526047  only-test-with-race-when-provided.patch"

community/syncthing/only-test-with-race-when-provided.patch

@@ -0,0 +1,14 @@
+Only use -race when -race is also given to build.go on the command line:
+x86_64 musl targets do not support the Go race runtime.
+diff -Nru a/build.go b/build.go
+--- a/build.go  2017-04-15 07:38:23.000000000 +0000
++++ b/build.go  2017-05-12 19:26:36.982569748 +0000
+@@ -379,7 +379,7 @@
+ func test(pkgs ...string) {
+ 	lazyRebuildAssets()
+ 
+-	useRace := runtime.GOARCH == "amd64"
++	useRace := race && runtime.GOARCH == "amd64"
+ 	switch runtime.GOOS {
+ 	case "darwin", "linux", "freebsd", "windows":
+ 	default: