libwg-go: update to go 1.13

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

README.md

@@ -7,9 +7,7 @@ This is an Android GUI for [WireGuard](https://www.wireguard.com/). It [opportun
 ## Building
 
 ```
-$ git clone https://git.zx2c4.com/wireguard-android
+$ git clone --recurse-submodules https://git.zx2c4.com/wireguard-android
 $ cd wireguard-android
-$ git submodule init
-$ git submodule update
 $ ./gradlew assembleRelease
 ```

app/tools/libwg-go/Makefile

@@ -20,30 +20,16 @@ export GOARCH := $(NDK_GO_ARCH_MAP_$(ANDROID_ARCH_NAME))
 export GOOS := android
 export CGO_ENABLED := 1
 
-default: $(DESTDIR)/libwg-go.so
+DESIRED_GO_VERSION := 1.13.1
 
-GOBUILDARCH := $(NDK_GO_ARCH_MAP_$(shell uname -m))
-GOBUILDOS := $(shell uname -s | tr '[:upper:]' '[:lower:]')
-GOBUILDVERSION := 1.12.10
-GOBUILDTARBALL := https://dl.google.com/go/go$(GOBUILDVERSION).$(GOBUILDOS)-$(GOBUILDARCH).tar.gz
-GOBUILDVERSION_NEEDED := go version go$(GOBUILDVERSION) $(GOBUILDOS)/$(GOBUILDARCH)
-export GOROOT := $(BUILDDIR)/goroot
-export GOPATH := $(BUILDDIR)/gopath
-export PATH := $(GOROOT)/bin:$(PATH)
-GOBUILDVERSION_CURRENT := $(shell $(GOROOT)/bin/go version 2>/dev/null)
-ifneq ($(GOBUILDVERSION_NEEDED),$(GOBUILDVERSION_CURRENT))
-$(shell rm -f $(GOROOT)/bin/go)
-endif
-$(GOROOT)/bin/go:
-	rm -rf "$(GOROOT)"
-	mkdir -p "$(GOROOT)"
-	curl "$(GOBUILDTARBALL)" | tar -C "$(GOROOT)" --strip-components=1 -xzf - || { rm -rf "$(GOROOT)"; exit 1; }
-	patch -p1 -f -N -r- -d "$(GOROOT)" < goruntime-boottime-over-monotonic.diff || { rm -rf "$(GOROOT)"; exit 1; }
+default: $(DESTDIR)/libwg-go.so
 
-$(shell test "$$(cat $(BUILDDIR)/.gobuildversion 2>/dev/null)" = "$(GOBUILDVERSION_CURRENT)" || rm -f "$(DESTDIR)/libwg-go.so")
+$(BUILDDIR)/go-$(DESIRED_GO_VERSION)/.prepared:
+	mkdir -p "$(dir $@)"
+	curl "https://dl.google.com/go/go$(DESIRED_GO_VERSION).$(shell uname -s | tr '[:upper:]' '[:lower:]')-$(NDK_GO_ARCH_MAP_$(shell uname -m)).tar.gz" | tar -C "$(dir $@)" --strip-components=1 -xzf -
+	patch -p1 -f -N -r- -d "$(dir $@)" < goruntime-boottime-over-monotonic.diff
+	touch "$@"
 
-$(DESTDIR)/libwg-go.so: $(GOROOT)/bin/go
-	go get -tags linux || { chmod -fR +w "$(GOPATH)/pkg/mod"; rm -rf "$(GOPATH)/pkg/mod"; exit 1; }
-	chmod -fR +w "$(GOPATH)/pkg/mod"
-	go build -tags linux -ldflags="-X main.socketDirectory=/data/data/$(ANDROID_PACKAGE_NAME)/cache/wireguard" -v -o "$@" -buildmode c-shared
-	go version > $(BUILDDIR)/.gobuildversion
+$(DESTDIR)/libwg-go.so: export PATH := $(BUILDDIR)/go-$(DESIRED_GO_VERSION)/bin/:$(PATH)
+$(DESTDIR)/libwg-go.so: $(BUILDDIR)/go-$(DESIRED_GO_VERSION)/.prepared go.mod
+	go build -tags linux -ldflags="-X main.socketDirectory=/data/data/$(ANDROID_PACKAGE_NAME)/cache/wireguard" -v -trimpath -o "$@" -buildmode c-shared

app/tools/libwg-go/go.mod

@@ -3,8 +3,8 @@ module golang.zx2c4.com/wireguard/android
 go 1.12
 
 require (
-	golang.org/x/crypto v0.0.0-20190701094942-4def268fd1a4 // indirect
-	golang.org/x/net v0.0.0-20190628185345-da137c7871d7 // indirect
-	golang.org/x/sys v0.0.0-20190626221950-04f50cda93cb
-	golang.zx2c4.com/wireguard v0.0.20190518-0.20190605110920-108c37a05639
+	golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550 // indirect
+	golang.org/x/net v0.0.0-20191011234655-491137f69257 // indirect
+	golang.org/x/sys v0.0.0-20191010194322-b09406accb47
+	golang.zx2c4.com/wireguard v0.0.20190908
 )

app/tools/libwg-go/go.sum

@@ -1,19 +1,19 @@
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/crypto v0.0.0-20190513172903-22d7a77e9e5f h1:R423Cnkcp5JABoeemiGEPlt9tHXFfw5kvc0yqlxRPWo=
-golang.org/x/crypto v0.0.0-20190513172903-22d7a77e9e5f/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
-golang.org/x/crypto v0.0.0-20190701094942-4def268fd1a4 h1:HuIa8hRrWRSrqYzx1qI49NNxhdi2PrY7gxVSq1JjLDc=
-golang.org/x/crypto v0.0.0-20190701094942-4def268fd1a4/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
+golang.org/x/crypto v0.0.0-20190829043050-9756ffdc2472/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
+golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550 h1:ObdrDkeb4kJdCP557AjRjq69pTHfNouLtWZG7j9rPN8=
+golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
-golang.org/x/net v0.0.0-20190522155817-f3200d17e092 h1:4QSRKanuywn15aTZvI/mIDEgPQpswuFndXpOj3rKEco=
-golang.org/x/net v0.0.0-20190522155817-f3200d17e092/go.mod h1:HSz+uSET+XFnRR8LxR5pz3Of3rY3CfYBVs4xY44aLks=
-golang.org/x/net v0.0.0-20190628185345-da137c7871d7 h1:rTIdg5QFRR7XCaK4LCjBiPbx8j4DQRpdYMnGn/bJUEU=
-golang.org/x/net v0.0.0-20190628185345-da137c7871d7/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20190827160401-ba9fcec4b297/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20191011234655-491137f69257 h1:ry8e2D+cwaV6hk7lb3aRTjjZo24shrbK0e11QEOkTIg=
+golang.org/x/net v0.0.0-20191011234655-491137f69257/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20190522044717-8097e1b27ff5 h1:f005F/Jl5JLP036x7QIvUVhNTqxvSYwFIiyOh2q12iU=
-golang.org/x/sys v0.0.0-20190522044717-8097e1b27ff5/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20190626221950-04f50cda93cb h1:fgwFCsaw9buMuxNd6+DQfAuSFqbNiQZpcgJQAgJsK6k=
-golang.org/x/sys v0.0.0-20190626221950-04f50cda93cb/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190830023255-19e00faab6ad/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20191010194322-b09406accb47 h1:/XfQ9z7ib8eEJX2hdgFTZJ/ntt0swNk5oYBziWeTCvY=
+golang.org/x/sys v0.0.0-20191010194322-b09406accb47/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.zx2c4.com/wireguard v0.0.20190518-0.20190605110920-108c37a05639 h1:AoX5+g0OBk+KqTTMVl4YPFZ9ioU2tPW1YwtzaVWdORA=
-golang.zx2c4.com/wireguard v0.0.20190518-0.20190605110920-108c37a05639/go.mod h1:8X7vp4RrsvM83bde6vQ94DsL4ZpjUViVUym8aa8zGhs=
+golang.org/x/text v0.3.2 h1:tW2bmiBqwgJj/UpqtC8EpXEZVYOwU0yG4iWbprSVAcs=
+golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.zx2c4.com/wireguard v0.0.20190908 h1:SUoXDdwSMtomLdvke+zz83/u9tNvl4hHmcTIWp38tow=
+golang.zx2c4.com/wireguard v0.0.20190908/go.mod h1:LhfXh5z6bLC2lW2ve6BzYZFwnnsXK3OQjySR0Yh2dO8=

app/tools/libwg-go/goruntime-boottime-over-monotonic.diff

@@ -1,4 +1,4 @@
-From 6998a7866b8428fd49c31506795c9f8154826d13 Mon Sep 17 00:00:00 2001
+From b19623e7673a4d6743745382d5d38751b64e011d Mon Sep 17 00:00:00 2001
 From: "Jason A. Donenfeld" <Jason@zx2c4.com>
 Date: Wed, 27 Feb 2019 05:05:44 +0100
 Subject: [PATCH] runtime: use CLOCK_BOOTTIME in nanotime on Linux
@@ -28,7 +28,7 @@ Change-Id: I7b2a6ca0c5bc5fce57ec0eeafe7b68270b429321
  8 files changed, 11 insertions(+), 11 deletions(-)
 
 diff --git a/src/runtime/sys_linux_386.s b/src/runtime/sys_linux_386.s
-index 40b55a67eb..6105780ff4 100644
+index 72c43bd9da..daadfe32a9 100644
 --- a/src/runtime/sys_linux_386.s
 +++ b/src/runtime/sys_linux_386.s
 @@ -288,13 +288,13 @@ noswitch:
@@ -48,7 +48,7 @@ index 40b55a67eb..6105780ff4 100644
  	INVOKE_SYSCALL
  
 diff --git a/src/runtime/sys_linux_amd64.s b/src/runtime/sys_linux_amd64.s
-index b709f77060..18a1f1d43a 100644
+index 5c300f553d..e4a6f12ec6 100644
 --- a/src/runtime/sys_linux_amd64.s
 +++ b/src/runtime/sys_linux_amd64.s
 @@ -261,7 +261,7 @@ noswitch:
@@ -61,7 +61,7 @@ index b709f77060..18a1f1d43a 100644
  	CALL	AX
  	MOVQ	0(SP), AX	// sec
 diff --git a/src/runtime/sys_linux_arm.s b/src/runtime/sys_linux_arm.s
-index 43a58335c8..8b93635f4f 100644
+index 9c7398451c..61b6cd91f6 100644
 --- a/src/runtime/sys_linux_arm.s
 +++ b/src/runtime/sys_linux_arm.s
 @@ -11,7 +11,7 @@
@@ -83,7 +83,7 @@ index 43a58335c8..8b93635f4f 100644
  	MOVW	runtime·vdsoClockgettimeSym(SB), R11
  	CMP	$0, R11
 diff --git a/src/runtime/sys_linux_arm64.s b/src/runtime/sys_linux_arm64.s
-index 8b344be8f8..daf142fba0 100644
+index 2835b6ca1c..346ca9cfce 100644
 --- a/src/runtime/sys_linux_arm64.s
 +++ b/src/runtime/sys_linux_arm64.s
 @@ -13,7 +13,7 @@
@@ -105,7 +105,7 @@ index 8b344be8f8..daf142fba0 100644
  	CBZ	R2, fallback
  	BL	(R2)
 diff --git a/src/runtime/sys_linux_mips64x.s b/src/runtime/sys_linux_mips64x.s
-index c45703d228..9842b596e7 100644
+index 33ed1050c2..59a5be179c 100644
 --- a/src/runtime/sys_linux_mips64x.s
 +++ b/src/runtime/sys_linux_mips64x.s
 @@ -189,7 +189,7 @@ TEXT runtime·walltime(SB),NOSPLIT,$16
@@ -118,10 +118,10 @@ index c45703d228..9842b596e7 100644
  	MOVV	$SYS_clock_gettime, R2
  	SYSCALL
 diff --git a/src/runtime/sys_linux_mipsx.s b/src/runtime/sys_linux_mipsx.s
-index f362b0f3f1..5ab866e047 100644
+index 6e539fbc6f..55b2bf7156 100644
 --- a/src/runtime/sys_linux_mipsx.s
 +++ b/src/runtime/sys_linux_mipsx.s
-@@ -193,7 +193,7 @@ TEXT runtime·walltime(SB),NOSPLIT,$8-12
+@@ -194,7 +194,7 @@ TEXT runtime·walltime(SB),NOSPLIT,$8-12
  	RET
  
  TEXT runtime·nanotime(SB),NOSPLIT,$8-8
@@ -131,7 +131,7 @@ index f362b0f3f1..5ab866e047 100644
  	MOVW	$SYS_clock_gettime, R2
  	SYSCALL
 diff --git a/src/runtime/sys_linux_ppc64x.s b/src/runtime/sys_linux_ppc64x.s
-index 6835f434de..46618b2d91 100644
+index 13d23156bd..f67e5062aa 100644
 --- a/src/runtime/sys_linux_ppc64x.s
 +++ b/src/runtime/sys_linux_ppc64x.s
 @@ -204,7 +204,7 @@ fallback:
@@ -144,7 +144,7 @@ index 6835f434de..46618b2d91 100644
  	MOVD	R1, R15		// R15 is unchanged by C code
  	MOVD	g_m(g), R21	// R21 = m
 diff --git a/src/runtime/sys_linux_s390x.s b/src/runtime/sys_linux_s390x.s
-index c79ceea751..44e3258e60 100644
+index 58b36dff0a..cb92e9a402 100644
 --- a/src/runtime/sys_linux_s390x.s
 +++ b/src/runtime/sys_linux_s390x.s
 @@ -180,7 +180,7 @@ TEXT runtime·walltime(SB),NOSPLIT,$16
@@ -157,5 +157,5 @@ index c79ceea751..44e3258e60 100644
  	MOVW	$SYS_clock_gettime, R1
  	SYSCALL
 -- 
-2.20.1
+2.23.0