From 17529b300b709ba98f9dbab139ca73c01760a12f Mon Sep 17 00:00:00 2001
From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Wed, 13 Jun 2018 01:38:48 +0200
Subject: Generate fat archive

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
---
 wireguard-go-bridge/Makefile | 41 ++++++++++++++++++++++++++++++-----------
 1 file changed, 30 insertions(+), 11 deletions(-)

(limited to 'wireguard-go-bridge')

diff --git a/wireguard-go-bridge/Makefile b/wireguard-go-bridge/Makefile
index 4e3ba32..813feb4 100644
--- a/wireguard-go-bridge/Makefile
+++ b/wireguard-go-bridge/Makefile
@@ -4,29 +4,48 @@
 
 FILES := $(filter-out %/main.go,$(wildcard ../wireguard-go/*/*.go) $(wildcard ../wireguard-go/*.go))
 
-# CLANG_FLAGS := --target=$(ANDROID_LLVM_TRIPLE) --gcc-toolchain=$(ANDROID_TOOLCHAIN_ROOT) --sysroot=$(ANDROID_SYSROOT)
-# export CGO_CFLAGS := $(CLANG_FLAGS) $(CFLAGS)
-# export CGO_LDFLAGS := $(CLANG_FLAGS) $(LDFLAGS)
-# export CC := $(ANDROID_C_COMPILER)
-# export GOARCH := $(NDK_GO_ARCH_MAP_$(ANDROID_ARCH_NAME))
+ARCHES := arm64 armv7 x86_64
+GOARCH_arm64 := arm64
+GOARCH_armv7 := arm
+GOARCH_x86_64 := amd64
+CGO_FLAGS_x86_64 := -arch x86_64 -isysroot $(shell xcrun --sdk iphonesimulator --show-sdk-path)
+CGO_FLAGS_arm64 := -arch arm64 -isysroot $(shell xcrun --sdk iphoneos --show-sdk-path)
+CGO_FLAGS_armv7 := -arch armv7 -isysroot $(shell xcrun --sdk iphoneos --show-sdk-path)
+CC_x86_64 := $(shell xcrun --sdk iphonesimulator --find clang)
+CC_arm64 := $(shell xcrun --sdk iphoneos --find clang)
+CC_armv7 := $(shell xcrun --sdk iphoneos --find clang)
 export GOOS := darwin
 export CGO_ENABLED := 1
 
-default: example
+default: libwg-go.a
 
-libwg-go.a: $(FILES) src/git.zx2c4.com/wireguard-go/api-ios.go src/git.zx2c4.com/wireguard-go/tun/tun_ios.go
+src/.prepared: $(FILES) src/git.zx2c4.com/wireguard-go/api-ios.go src/git.zx2c4.com/wireguard-go/tun/tun_ios.go
 	find . -name '*.go' -type l -delete
 	find . -type d -empty -delete
 	mkdir -p $(subst ../wireguard-go/,./src/git.zx2c4.com/wireguard-go/,$(dir $(FILES)))
 	$(foreach FILE,$(FILES),ln -sf $(abspath $(FILE)) $(subst ../wireguard-go/,./src/git.zx2c4.com/wireguard-go/,$(dir $(FILE)))$(notdir $(FILE));)
 	GOPATH=$(PWD) go get -v -d git.zx2c4.com/wireguard-go
-	GOPATH=$(PWD) go build -tags ios -v -o libwg-go.a -buildmode c-archive git.zx2c4.com/wireguard-go
-	@rm -f libwg-go.h
+	touch $@
+
+define libwg-go-a
+libwg-go-$(1).a: $(FILES) src/git.zx2c4.com/wireguard-go/api-ios.go src/git.zx2c4.com/wireguard-go/tun/tun_ios.go src/.prepared
+	CC="$(CC_$(1))" \
+	CGO_CFLAGS="$(CGO_FLAGS_$(1))" \
+	CGO_LDFLAGS="$(CGO_FLAGS_$(1))" \
+	GOARCH=$(GOARCH_$(1)) \
+	GOPATH=$(PWD) \
+	go build -tags ios -v -o libwg-go-$(1).a -buildmode c-archive git.zx2c4.com/wireguard-go
+	@rm -f libwg-go-$(1).h
+endef
+$(foreach ARCH,$(ARCHES),$(eval $(call libwg-go-a,$(ARCH))))
+
+libwg-go.a: $(foreach ARCH,$(ARCHES),libwg-go-$(ARCH).a)
+	xcrun --sdk iphoneos lipo -create -output $@ $^
 
 example: example.c libwg-go.a
-	$(CC) -L. -lwg-go -o example example.c
+	xcrun --sdk iphoneos clang -framework CoreFoundation -isysroot $(shell xcrun --sdk iphoneos --show-sdk-path) -arch arm64 -arch armv7 -L. -lwg-go -o example example.c
 
 clean:
-	rm -f libwg-go.a test
+	rm -f libwg-go.a $(foreach ARCH,$(ARCHES),libwg-go-$(ARCH).a) example
 
 .PHONY: clean default
-- 
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