From 77023fea0f553f52191f99cb9f6559aa68436ce8 Mon Sep 17 00:00:00 2001
From: Elliot Nunn <elliotnunn@me.com>
Date: Mon, 21 May 2018 15:19:04 +0800
Subject: [PATCH] Add Unix shell script to wrap EasyBuild

---
 EasyBuild    |  5 +++++
 EasyBuild.sh | 19 +++++++++++++++++++
 README.md    |  4 ++++
 3 files changed, 28 insertions(+)
 create mode 100755 EasyBuild.sh

diff --git a/EasyBuild b/EasyBuild
index 22568a3..26f5c32 100644
--- a/EasyBuild
+++ b/EasyBuild
@@ -13,3 +13,8 @@ End
 
 Make -w -d Sources=: -f "{MAKE_FILE}" RomMondo > "{MAKE_OUT}"
 "{MAKE_OUT}"
+
+# So that RomMondo is definitely the newest thing in the tree!
+SetDirectory :BuildResults:RISC:Image:
+Catenate RomMondo > RomMondoX
+Rename -y RomMondoX RomMondo
diff --git a/EasyBuild.sh b/EasyBuild.sh
new file mode 100755
index 0000000..ae7563a
--- /dev/null
+++ b/EasyBuild.sh
@@ -0,0 +1,19 @@
+#!/bin/sh
+
+# Avoid the uber-slow step of running the emulator when nothing has changed
+
+if [ ! -f BuildResults/RISC/Image/RomMondo ]
+then
+	echo "RomMondo not yet built"
+	echo "> Starting emulator to build RomMondo"
+	empw EasyBuild
+	echo "< Emulator done"
+	exit
+fi
+
+echo "Checking for files updated since RomMondo"
+find . ! -regex '.*/\..*' ! -iname '*.dmg' -newer BuildResults/RISC/Image/RomMondo | grep . || exit 0
+
+echo "> Starting emulator to build RomMondo"
+empw EasyBuild
+echo "< Emulator done"
diff --git a/README.md b/README.md
index 96442a1..56f64a9 100644
--- a/README.md
+++ b/README.md
@@ -51,6 +51,10 @@ Using EMPW, that's:
 
 	empw EasyBuild
 
+Even nicer is this Unix shell script, which avoids unnecessary launches of the emulator:
+
+	./EasyBuild.sh
+
 The 3 MB image will be at `BuildResults/RISC/Image/RomMondo`.
 
 What's next?