Added basic build system

build/env.inc.mk

@@ -0,0 +1,36 @@
+
+# Fill in all paths
+PATH_SRC		?= src
+PATH_BIN		?= bin
+PATH_HEX2BIN	?= /usr/bin
+PATH_SDCC		?= /usr/bin
+PATH_CURRENT	?= $(dir $(lastword $(MAKEFILE_LIST)))
+
+# Build tools 
+H2B		?= $(PATH_HEX2BIN)/hex2bin
+SDCC	?= $(PATH_SDCC)/sdcc
+SDASM	?= $(PATH_SDCC)/sdasz80
+SDAR	?= $(PATH_SDCC)/sdar
+
+SDCC_FLAG_CPU ?= -mz80
+SDCC_FLAG_LD ?= --nostdinc
+SDASM_FLAGS ?= -g -l -c -o
+SDAR_FLAGS ?= -rc
+
+# OS cmds
+ifeq ($(OS),Windows_NT)
+	RM = del /F /Q 
+	RMDIR = -RMDIR /S /Q
+	MKDIR = -mkdir
+	ERRIGNORE = 2>NUL || true
+	SEP=\\
+else
+	RM = rm -rf 
+	RMDIR = rm -rf 
+	MKDIR = mkdir -p
+	ERRIGNORE = 2>/dev/null
+	SEP=/
+endif
+
+# Remove space after separator
+PSEP = $(strip $(SEP))

build/local.inc.mk-template

@@ -0,0 +1,9 @@
+# Local env included makefile 
+# This file should be ignored in version control
+# note: the ?= is so you can override those again in cmdline.
+#
+# Change to local installations.
+
+#PATH_SDCC		?= /usr/bin
+
+#PATH_HEX2BIN	?= /usr/bin