First implementation

vendor/periph.io/x/periph/Makefile

@@ -0,0 +1,59 @@
+# Copyright 2016 The Periph Authors. All rights reserved.
+# Use of this source code is governed under the Apache License, Version 2.0
+# that can be found in the LICENSE file.
+
+# This Makefile captures common tasks for the periph library. The hope is that this Makefile can remain
+# simple and straightforward...
+
+# *** This Makefile is a work in progress, please help impove it! ***
+
+# not sure yet what all should do...
+all:
+	@echo Available targets: test build
+
+.PHONY: all test clean depend
+
+# test runs the platform independent tests
+# (gofmt|grep is used to obtain a non-zero exit status if the formatting is off)
+test:
+	go test ./...
+	@if gofmt -l . | grep .go; then \
+	  echo "Repo contains improperly formatted go files; run gofmt on above files" && exit 1; \
+	else echo "OK gofmt"; fi
+	-go vet -unsafeptr=false ./...
+
+# BUILD
+#
+# The build target cross compiles each program in cmd to a binary for each platform in the bin
+# directory. It is assumed that each command has a main.go file in its directory. Trying to keep all
+# this relatively simple and not descend into makefile hell...
+
+# Get a list of all main.go in cmd subdirs
+# MAINS becomes: cmd/gpio-list/main.go cmd/periph-info/main.go ...
+MAINS := $(wildcard cmd/*/main.go)
+# Get a list of all the commands, i.e. names of dirs that contain a main.go
+# CMDS becomes: gpio-list periph-info ...
+CMDS  := $(patsubst cmd/%/main.go,%,$(MAINS))
+# Get a list of binaries to build
+# BINS becomes: bin/gpio-list-arm bin/periph-info-arm ... bin/gpio-list-arm64 bin/periph-info-arm64 ...
+ARCHS := arm arm64 amd64 win64.exe
+BINS=$(foreach arch,$(ARCHS),$(foreach cmd,$(CMDS),bin/$(cmd)-$(arch)))
+
+build: depend bin $(BINS)
+bin:
+	mkdir bin
+
+# Rules to build binaries for a command in cmd. The prereqs could be improved...
+bin/%-arm: cmd/%/*.go
+	GOARCH=arm GOOS=linux go build -o $@ ./cmd/$*
+bin/%-arm64: cmd/%/*.go
+	GOARCH=arm64 GOOS=linux go build -o $@ ./cmd/$*
+bin/%-amd64: cmd/%/*.go
+	GOARCH=amd64 GOOS=linux go build -o $@ ./cmd/$*
+bin/%-win64.exe: cmd/%/*.go
+	GOARCH=amd64 GOOS=windows go build -o $@ ./cmd/$*
+	
+# clean removes all compiled binaries
+clean:
+	rm bin/*-*
+	rmdir bin