Makefile: initial commit

+ added ability to build `utils` and install them into `SD` directory

Makefile

@@ -0,0 +1,67 @@
+# Updates content of SD directory.
+#
+# Supported environments:
+#   * GNU on Linux, FreeBSD etc.
+#   * GNU on Windows NT (using MinGW/MSYS/Cygwin/WSL)
+#
+# Build:
+#   make
+# Clean:
+#   make clean
+#
+# SPDX-FileCopyrightText: 2021 Ivan Tatarinov <ivan-tat@ya.ru>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+include sdk/common.mk
+
+INSTALL_DIR=SD
+
+UTILS_TARGETS=\
+ BACK16M\
+ BACKZX2\
+ BACKZXD\
+ BACKUP\
+ CORCLEAN\
+ COREBIOS\
+ ROMSBACK\
+ ROMSUPGR\
+ UPGR16M\
+ UPGRZX2\
+ UPGRZXD\
+ UPGRADE
+
+UTILS_INSTALL_DIR=$(INSTALL_DIR)/BIN
+
+.PHONY: all
+all:\
+ install-utils
+	@echo 'Done.'
+
+# utils
+
+.PHONY: install-utils
+install-utils: $(foreach t,$(UTILS_TARGETS),$(UTILS_INSTALL_DIR)/$(t)) | utils
+
+# $1 = target
+define utils_rule =
+$$(UTILS_INSTALL_DIR)/$1: utils/build/$1 | utils
+	mv $$< $$@
+utils/build/$1: | utils
+	$$(MAKE) -w -C $$| build/$$(@F)
+endef
+
+$(foreach t,$(UTILS_TARGETS),$(eval $(call utils_rule,$(t))))
+
+.PHONY: clean-utils
+clean-utils: | utils
+	$(MAKE) -w -C $| clean
+
+.PHONY: uninstall-utils
+uninstall-utils: clean-utils
+	rm -f $(foreach t,$(UTILS_TARGETS),$(UTILS_INSTALL_DIR)/$(t))
+
+# clean
+
+.PHONY: clean
+clean: uninstall-utils