From 5f70dd1a1f04f95f02ed3d65335f58f6a339b24c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Storsj=C3=B6?= <martin@martin.st>
Date: Fri, 28 Jun 2019 00:13:24 +0300
Subject: [PATCH] Avoid errors when recreating an existing symlink on msys2

In this environment, symlinks don't exist but are made as copies.
In such cases, the -n option to ln doesn't work for making this
a no-op.

Alternatively, we could append "|| true", which would print an
error but continue.
---
 build-mingw-w64.sh | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/build-mingw-w64.sh b/build-mingw-w64.sh
index 11b9ddc..8781ac0 100755
--- a/build-mingw-w64.sh
+++ b/build-mingw-w64.sh
@@ -76,7 +76,9 @@ if [ -z "$HOST" ]; then
     if [ -z "$SKIP_INCLUDE_TRIPLET_PREFIX" ]; then
         for arch in $ARCHS; do
             mkdir -p $PREFIX/$arch-w64-mingw32
-            ln -sfn ../generic-w64-mingw32/include $PREFIX/$arch-w64-mingw32/include
+            if [ ! -e $PREFIX/$arch-w64-mingw32/include ]; then
+                ln -sfn ../generic-w64-mingw32/include $PREFIX/$arch-w64-mingw32/include
+            fi
         done
     fi