From f0502a7a99feaba30bf95a50db409194609368d2 Mon Sep 17 00:00:00 2001
From: Keith Stellyes <keithstellyes@Keiths-MacBook-Pro.local>
Date: Thu, 10 Oct 2019 11:35:34 -0700
Subject: [PATCH] Fix for tools/zasm.sh being dependent on readlink -f (an
 issue on macOS, preventing builds)

---
 tools/zasm.sh | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/tools/zasm.sh b/tools/zasm.sh
index 574f91b..449bcfc 100755
--- a/tools/zasm.sh
+++ b/tools/zasm.sh
@@ -1,7 +1,11 @@
-#!/bin/sh
+#!/bin/bash
+
+# readlink -f doesn't work with macOS's implementation (BSD in general?)
+# so, if we can't get readlink -f to work, try python with a realpath implementation
+ABS_PATH=$(readlink -f "$0" || python -c "import sys, os; print(os.path.realpath('$0'))")
 
 # wrapper around ./emul/zasm/zasm that prepares includes CFS prior to call
-DIR=$(dirname $(readlink -f "$0"))
+DIR=$(dirname "${ABS_PATH}")
 ZASMBIN="${DIR}/emul/zasm/zasm"
 CFSPACK="${DIR}/cfspack/cfspack"
 INCCFS=$(mktemp)