From e834d7887143fc8da542d3d29907e8db7a5b9bb2 Mon Sep 17 00:00:00 2001
From: "Federico G. Schwindt" <fgsch@lodoss.net>
Date: Thu, 15 Jul 2021 19:14:49 +0100
Subject: [PATCH] Fix undefined symbols error

Currently TinyGo does not process SFiles (assembly files), which
are needed by math/big. Add math_big_pure_go to the build tags to
unbreak it.
---
 compileopts/config.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/compileopts/config.go b/compileopts/config.go
index a60f778e..36782506 100644
--- a/compileopts/config.go
+++ b/compileopts/config.go
@@ -55,7 +55,7 @@ func (c *Config) GOARCH() string {
 
 // BuildTags returns the complete list of build tags used during this build.
 func (c *Config) BuildTags() []string {
-	tags := append(c.Target.BuildTags, []string{"tinygo", "gc." + c.GC(), "scheduler." + c.Scheduler(), "serial." + c.Serial()}...)
+	tags := append(c.Target.BuildTags, []string{"tinygo", "math_big_pure_go", "gc." + c.GC(), "scheduler." + c.Scheduler(), "serial." + c.Serial()}...)
 	for i := 1; i <= c.GoMinorVersion; i++ {
 		tags = append(tags, fmt.Sprintf("go1.%d", i))
 	}