Makefile.cross-compiles

export PATH := $(GOPATH)/bin:$(PATH)
export GO111MODULE=on
# LDFLAGS := -linkmode external -extldflags -static -s -w
LDFLAGS := -s -w

os-archs=linux:amd64 darwin:amd64 darwin:arm64 windows:amd64 linux:mips64 linux:mips64le linux:mips:softfloat linux:mipsle:softfloat freebsd:386 freebsd:amd64 linux:386 linux:arm linux:arm64 windows:386 

all: build

build: app

app:
	@$(foreach n, $(os-archs),\
		os=$(shell echo "$(n)" | cut -d : -f 1);\
		arch=$(shell echo "$(n)" | cut -d : -f 2);\
		gomips=$(shell echo "$(n)" | cut -d : -f 3);\
		target_suffix=$${os}_$${arch};\
		env CC=/usr/local/bin/x86_64-linux-musl-gcc CGO_ENABLED=0 GOOS=$${os} GOARCH=$${arch} GOMIPS=$${gomips} go build -ldflags="$(LDFLAGS)" -trimpath -o ./release/DNS_Server_$${target_suffix} .;\
		echo "Build $${os}-$${arch} done";\
	)
	@mv ./release/DNS_Server_windows_386 ./release/DNS_Server_windows_386.exe
	@mv ./release/DNS_Server_windows_amd64 ./release/DNS_Server_windows_amd64.exe

linux:
	@$(os-archs=linux:amd64;\
		echo os-archs;\
		foreach n, $(os-archs),\
		os=$(shell echo "$(n)" | cut -d : -f 1);\
		arch=$(shell echo "$(n)" | cut -d : -f 2);\
		gomips=$(shell echo "$(n)" | cut -d : -f 3);\
		target_suffix=$${os}_$${arch};\
		env CC=/usr/local/bin/x86_64-linux-musl-gcc CGO_ENABLED=0 GOOS=$${os} GOARCH=$${arch} GOMIPS=$${gomips} go build -ldflags="$(LDFLAGS)" -trimpath -o ./release/DNS_Server_$${target_suffix} .;\
		echo "Build $${os}-$${arch} done";\
	)