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go/misc/ios
Elias Naur 03c93eaa0b misc/ios: dump logs for failing lldb sessions to stdout
The iOS test harness dumps the output of its lldb session to stdout,
but only if the lldb session was successfully started.
Make sure the log is always dumpede, so that lldb startup failures
such as

lldb setup error: exited (lldb start: exit status 253)

can be diagnosed.

For the iOS builders.

Change-Id: Ie0e3341dd8f84a88d26509c34816668d3ebbfaa0
Reviewed-on: https://go-review.googlesource.com/76195
Run-TryBot: Elias Naur <elias.naur@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
2017-12-04 17:48:58 +00:00
..
clangwrap.sh
detect.go
go_darwin_arm_exec.go misc/ios: dump logs for failing lldb sessions to stdout 2017-12-04 17:48:58 +00:00
README

Go on iOS
=========

To build a cross compiling toolchain for iOS on OS X, first modify clangwrap.sh
in misc/ios to match your setup. And then run:

	GOARM=7 CGO_ENABLED=1 GOARCH=arm CC_FOR_TARGET=`pwd`/../misc/ios/clangwrap.sh \
	CXX_FOR_TARGET=`pwd`/../misc/ios/clangwrap.sh ./make.bash

To build a program, use the normal go build command:

	CGO_ENABLED=1 GOARCH=arm go build import/path

To run a program on an iDevice, first make sure you have a valid developer
certificate and have setup your iDevice properly to run apps signed by your
developer certificate. Then install https://github.com/phonegap/ios-deploy.
At a first step, you can try building the famous hello world program to run
on your test device.
(The needed files are provided at https://github.com/minux/go-ios-examples.)

	# assume your program binary is helloworld.go, build it into the
	# example hello.app bundle.
	CGO_ENABLED=1 GOARCH=arm go build -o hello.app/hello helloworld.go
	# sign the executable using your developer certificate
	codesign -f -s "iPhone Developer" --entitlements hello.app/Entitlements.plist hello.app/hello
	# run the program inside lldb on iDevice, run `ios-deploy` for more
	# command options
	ios-deploy --debug --uninstall --bundle hello.app
	# Depending on your ios-deploy version, you might need to enter "run"
	# into lldb to run your program, and its output will be shown by lldb.

Notes:
 - A dummy hello.app bundle is provided in this directory to help you get started.
 - Running the program on an iDevice requires code sign and thus external linking,
   if your program uses cgo, then it will automatically use external linking.
   However, if your program does not use cgo, please make sure to add
	import _ "runtime/cgo"
   so that external linking will be used.

Known issues
============
 - crypto/x509 won't build, I don't yet know how to get system root on iOS.
 - Because I still want to be able to do native build, CGO_ENABLED=1 is not the
   default, yet.