add fasmg upgrade script for mateo

Author: mateoconlechuga

tools/fasmg/fasmg-ez80

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+# this script currently only runs on linux.
+
+build_fasmg () {
+    .tmp/fasmg/fasmg .tmp/fasmg/source/$1/fasmg.asm $1/$2
+    chmod -x $1/$2
+}
+
+cd fasmg-ez80
+git pull origin master
+cd ..
+mkdir -p .tmp
+wget --no-verbose https://flatassembler.net/fasmg.zip --output-document=.tmp/fasmg.zip
+unzip -od .tmp/fasmg .tmp/fasmg.zip
+patch -p0 -d .tmp/fasmg < fasmg-ez80/fasmg.patch
+chmod +x .tmp/fasmg/fasmg
+
+build_fasmg linux   fasmg
+build_fasmg windows fasmg.exe
+build_fasmg macos   fasmg
+
+rm -rf .tmp
+