wireguard-apple/wireguard-go-bridge/Makefile

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# SPDX-License-Identifier: GPL-2.0
#
# Copyright (C) 2018-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
# These are generally passed to us by xcode, but we set working defaults for standalone compilation too.
ARCHS ?= arm64 armv7
SDK_NAME ?= iphoneos
SDKROOT ?= $(shell xcrun --sdk $(SDK_NAME) --show-sdk-path)
CONFIGURATION_BUILD_DIR ?= $(CURDIR)/out
CONFIGURATION_TEMP_DIR ?= $(CURDIR)/.tmp
export CC ?= clang
LIPO ?= lipo
DESTDIR ?= $(CONFIGURATION_BUILD_DIR)
BUILDDIR ?= $(CONFIGURATION_TEMP_DIR)/wireguard-go-bridge
CFLAGS_PREFIX := $(if $(DEPLOYMENT_TARGET_CLANG_FLAG_NAME),-$(DEPLOYMENT_TARGET_CLANG_FLAG_NAME)=$($(DEPLOYMENT_TARGET_CLANG_ENV_NAME)),) -Wno-unused-command-line-argument -isysroot $(SDKROOT) -arch
GOARCH_arm64 := arm64
GOARCH_armv7 := arm
GOARCH_x86_64 := amd64
build: $(DESTDIR)/libwg-go.a
version-header: $(DESTDIR)/wireguard-go-version.h
REAL_GOROOT := $(shell go env GOROOT 2>/dev/null)
export GOROOT := $(BUILDDIR)/goroot
$(GOROOT)/.prepared:
[ -n "$(REAL_GOROOT)" ]
mkdir -p "$(GOROOT)"
rsync -a --delete --exclude=pkg/obj/go-build "$(REAL_GOROOT)/" "$(GOROOT)/"
cat goruntime-*.diff | patch -p1 -f -N -r- -d "$(GOROOT)"
touch "$@"
define libwg-go-a
$(BUILDDIR)/libwg-go-$(1).a: export CGO_ENABLED := 1
$(BUILDDIR)/libwg-go-$(1).a: export CGO_CFLAGS := $(CFLAGS_PREFIX) $(ARCH)
$(BUILDDIR)/libwg-go-$(1).a: export CGO_LDFLAGS := $(CFLAGS_PREFIX) $(ARCH)
$(BUILDDIR)/libwg-go-$(1).a: export GOOS := darwin
$(BUILDDIR)/libwg-go-$(1).a: export GOARCH := $(GOARCH_$(1))
$(BUILDDIR)/libwg-go-$(1).a: $(GOROOT)/.prepared go.mod
go build -tags ios -ldflags=-w -trimpath -v -o "$(BUILDDIR)/libwg-go-$(1).a" -buildmode c-archive
rm -f "$(BUILDDIR)/libwg-go-$(1).h"
endef
$(foreach ARCH,$(ARCHS),$(eval $(call libwg-go-a,$(ARCH))))
$(DESTDIR)/wireguard-go-version.h: $(GOROOT)/.prepared go.mod
go list -m golang.zx2c4.com/wireguard | sed -n 's/.*v\([0-9.]*\).*/#define WIREGUARD_GO_VERSION "\1"/p' > "$@"
$(DESTDIR)/libwg-go.a: $(foreach ARCH,$(ARCHS),$(BUILDDIR)/libwg-go-$(ARCH).a)
@mkdir -vp "$(DESTDIR)"
$(LIPO) -create -output "$@" $^
clean:
rm -rf "$(BUILDDIR)" "$(DESTDIR)/libwg-go.a" "$(DESTDIR)/wireguard-go-version.h"
install: build
.PHONY: clean build version-header install