From 6381b7ee3f6a4cbee65d490fae464915e722aebd Mon Sep 17 00:00:00 2001
From: "W. Felix Handte" <w@felixhandte.com>
Date: Mon, 4 May 2020 18:59:47 -0400
Subject: [PATCH] Add Fallback When realpath Doesn't Support --relative-to

---
 contrib/single_file_libs/combine.sh | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/contrib/single_file_libs/combine.sh b/contrib/single_file_libs/combine.sh
index a98eef283..40f420256 100755
--- a/contrib/single_file_libs/combine.sh
+++ b/contrib/single_file_libs/combine.sh
@@ -72,7 +72,11 @@ resolve_include() {
   local inc=$2
   for root in $srcdir $ROOTS; do
     if [ -f "$root/$inc" ]; then
-      echo "$(realpath --relative-to . "$root/$inc")"
+      local relpath="$(realpath --relative-to . "$root/$inc")"
+      if [ "$?" -eq "0" ]; then # not all realpaths support --relative-to
+        relpath="$(realpath "$root/$inc")"
+      fi
+      echo "$relpath"
       return 0
     fi
   done
-- 
2.47.2