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The iOS exec wrapper uses ios-deploy to set up a device, install the wrapped app, and start a lldb session to run it. ios-deploy is not built to be scripted, as can be seen from the brittle way it is driven by the Go wrapper. There are many timeouts and comments such as " // lldb tries to be clever with terminals. // So we wrap it in script(1) and be clever // right back at it. " This CL replaces the use of ios-deploy with a lldb driver script in Python. lldb is designed to be scripted, so apart from getting rid of the ios-deploy dependency, we gain: - No timouts and scripting ios-deploy through stdin and parsing stdout for responses. - Accurate exit codes. - Prompt exits when the wrapped binary fails for some reason. Before, the go test timeout would kick in to fail the test. - Support for environment variables. - No noise in the test output. Only the test binary output is output from the wrapper. We have to do more work with the lldb driver: mounting the developer image on the device, running idevicedebugserverproxy and installing the app. Even so, the CL removes almost as many lines as it adds. Furthermore, having the steps split up helps to tell setup errors from runtime errors. Change-Id: I48cccc32f475d17987283b2c93aacc3da18fe339 Reviewed-on: https://go-review.googlesource.com/107337 TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> |
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| .. | ||
| clangwrap.sh | ||
| detect.go | ||
| go_darwin_arm_exec.go | ||
| 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.