Updating extensions for iOS 7
This is an informal collection of advice; feel free to add to it and rearrange. A lot of this is from #theos on irc.saurik.com - if you're working on updating your tweaks and you use Theos, join in and share what you've learned (see IRC).
- 1 WARNING
- 2 Tweaks that do NOT need iOS 4.2.1 and below compatibility
- 3 Tweaks that do need iOS 4.2.1 and below compatibility
- 4 Updating code for 64Bit
- 5 Dealing with 64bit
- 6 Working with Mobile Substrate
- 7 Theos advice
- 8 Theos and ldid
- 9 Dealing with 32-bit and 64-bit
- 10 Mobile Substrate tip
- 11 Theos and ldid errors
- 12 Supporting iOS 4-7 with one binary & Example project link
- 13 Accessing the device's UDID
At the time of writing this MobileSubstrate has not been updated for arm64 and therefore these instructions describe a way to setup your development environment and fix arm64 related compiler bugs. Whether the resulting binary will actually work on arm64 systems is not certain.
Tweaks that do NOT need iOS 4.2.1 and below compatibility
Very easy, simply follow Kirb's advice on his blog: http://sharedinstance.net/2013/12/how-to-support-arm64/
Tweaks that do need iOS 4.2.1 and below compatibility
This is slightly more complicated. You need to compile an armv6 slice using the 5.1 SDK and another arm64 slice using the 7.0 SDK. You then stitch both together with lipo. Kirk's blog post describes how to do that manually, but rpetrich has created a theos fork, which does that automatically for you.
Setup rpetrich’s THEOS:
mbkim:iOS7-Dev-Setup Kim$ export THEOS=/opt/theos-rpetrich
mbkim:iOS7-Dev-Setup Kim$ sudo git clone https://github.com/rpetrich/theos $THEOS
mbkim:iOS7-Dev-Setup Kim$ wget http://joedj.net/ldid
mbkim:iOS7-Dev-Setup Kim$ sudo mv ldid $THEOS/bin/ldid
mbkim:iOS7-Dev-Setup Kim$ sudo chmod +x $THEOS/bin/ldid
mbkim:iOS7-Dev-Setup Kim$ wget http://cdn.hbang.ws/dl/libsubstrate_arm64.dylib
mbkim:iOS7-Dev-Setup Kim$ sudo mv libsubstrate_arm64.dylib $THEOS/lib/libsubstrate.dylib
mbkim:iOS7-Dev-Setup Kim$ cd $THEOS/; sudo ./git-submodule-recur.sh init; sudo git submodule update
Setup the Makefile
TARGET := iphone:clang
export THEOS_PLATFORM_SDK_ROOT_armv6 = /Applications/Xcode_4.4.1.app/Contents/Developer
export SDKVERSION_armv6 = 5.1
export TARGET_IPHONEOS_DEPLOYMENT_VERSION = 4.2.1
export TARGET_IPHONEOS_DEPLOYMENT_VERSION_arm64 = 7.0
export ARCHS = armv6 arm64
TWEAK_NAME = iLogIt
iLogIt_FILES = Tweak.xm
Example Projects: Take a look at the Makefiles of these projects:
Updating code for 64Bit
- ifdef __LP64__
Dealing with 64bit
20:44:45 <@sbingner> saurik said all tweaks will need to be recompiled to have a 64bit slice
20:45:10 <@sbingner> which is what I've been working on... as soon as substrate is updated I should be able to just type "make" :D
20:49:27 <@sbingner> crash-x, installing rpetrich's fork of theos and making sure it can compile for armv6 with latest xcode on it... and that arm64 will compile except for the mobilesubstrate lib being missing
20:45:32 <@Optimo> dlopen from a variety of avenues, or ...INSERT_LIBRARIES -- all for your own testing of course
20:45:54 <@Optimo> (if you have a 64bit device)
Working with Mobile Substrate
21:22:35 < Alcatraz> https://ghostbin.com/paste/zhsx9 Tutorial to Make mobilesubstrate more stable while we wait for an official update.
Add the repo: rpetri.ch/repo
Install the beta Activator
Some Stuff that was broken before you installed the beta activator such as SBSettings and PreferenceLoader should be working now.
If they are not,it is likely another package that still wont work. Or you rebooted your device.
Rebooting the device seems to break mobilesubstrate for whatever reason.
So each time you reboot you have to reinstall mobilesubstrate or run this command:
/usr/bin/cynject 1 /Library/Frameworks/CydiaSubstrate.framework/Libraries/SubstrateLauncher.dylib && killall backboardd && sbreload
21:25:55 <@DHowett> This time, you're all wrong
21:25:59 <@sbingner> oh?
21:26:01 <@DHowett> theos passes -arch flags to the compiler, after all.
21:26:07 < Maximus> ARCH=armv7 and uh
21:26:08 <@sbingner> ^^
21:26:12 < Maximus> ARCHS
21:26:18 <@DHowett> alexzielenski: by default, theos passes armv7 armv7s to the compiler on 6.0+
21:26:39 <@DHowett> alexzielenski: you can override this by setting ARCHS=armv7 arm64 before you include common.mk
21:26:48 < alexzielenski> DHowett: thanks
21:27:10 <@sbingner> DHowett, what I said was wrong because it wasn't complete? :P
21:27:26 < Maximus> i was getting there
21:27:41 <@DHowett> sbingner: well, because it doesn't have anything to do with the compiler, really: this is all a compiler driver problem once you have upgraded xcode
21:27:43 <@sbingner> have time to point me to the right place to add support for foo_FILES_arch to rpetrich's fork? I'm missing the right spot
21:27:52 <@DHowett> instance/rules.mk
21:28:29 < coolstar> screw arm64
21:28:36 < coolstar> the build tools are still not out yet
21:28:36 < coolstar> http://opensource.apple.com/
21:28:37 <@sbingner> ok thanks... I guess I was in the right spot but doing something wrong lol... I'll figure it out
21:28:44 <@DHowett> the proprietary ones are.
21:28:50 <@DHowett> why is everybody focusing on this now?
01:03:36 < therpgitbot> [theos] rpetrich pushed 1 new commit to master: http://git.io/ankV8g
01:03:36 < therpgitbot> theos/master f6ebd79 Ryan Petrich: Workaround bootstrap problems on Xcode 5.x (temporary fix for now)
22:58:21 <%joedj> here's a tip: if you aren't using low-level substrate features like MSHookFunction, you may be able to prepare arm64-ready packages using %config(generator=internal). of course, they won't actually work until substrate can load them
Theos and ldid
12:11:37 < Ge0rges> if anyone here has a tip Still having this problem when installing ldid for theos: https://pastee.org/vasuu
12:28:42 <%joedj> Ge0rges: just put the ldid binary i gave you into theos/bin/ and move on to the next step
13:14:13 <%joedj> Ge0rges: http://joedj.net/ldid
Dealing with 32-bit and 64-bit
12:38:15 <%joedj> sbingner: i did find this question (and the response 2 posts down) interesting, i'm not sure what they're talking about: https://www.mikeash.com/pyblog/friday-qa-2013-09-27-arm64-and-you.html#comment-7436311d02c5a55738d1baefa03b0d34
[09:25] <rpetrich> joedj: it's a bug with the components that communicate with the App Store
Mobile Substrate tip
14:20:58 < ganbold_> so mobilesubstrate is working partially? after reboot/restart doesn't work
14:29:03 < ac3xx> ganbold_, either just reinstall it through cydia or run this over SSH - /var/lib/dpkg/info/mobilesubstrate.extrainst_ upgrade && killall SpringBoard
Theos and ldid errors
19:02:14 < yoshbu> I've been off the jailbreak train for awhile now. Trying to reinstall theos, getting some build failures when trying to install ldid, anybody know if there's a quick fix?
19:02:52 < yoshbu> like, error: unknown type name '__darwin_intptr_t'
19:02:59 < yoshbu> and, error: unknown type name '__uint32_t'; did you mean 'uint32_t'?
19:05:27 < Alcatraz> are you trying to compile ldid on mac?
19:05:55 < yoshbu> following step 4 of http://iphonedevwiki.net/index.php/Theos/Getting_Started
19:06:10 < Alcatraz> yeah compiling it has been broken for some time
19:06:27 < Alcatraz> has to do with xcode 5
19:06:32 < Alcatraz> pretty sure anyway
19:06:50 < yoshbu> ldid is a dependency of theos though right?
19:07:01 < Alcatraz> yeah. you can ask someone on here for a copy
19:07:23 -!- mindw0rk [[email protected]] has joined #theos
19:08:05 < ac3xx> yoshbu, wget http://ac3xx.com/ldid -O $THEOS/bin/ldid && chmod +x $THEOS/bin/ldid
23:59:59 <%joedj> sbingner: i used 5.1 SDK (xcode 4.4.1) for the armv6 slice, targetting 4.0: https://github.com/joedj/ExchangePolicyCleaner/blob/master/Makefile#L3
(also rpetrich's canonical example: https://github.com/a3tweaks/Flipswitch/blob/master/Makefile#L16 )
Day changed to 24 Dec 2013
00:01:43 <+crash-x> joedj: you can make a fat binary with the armv6 slice targetting 4.0 and the arm64 part targetting ios 7 and achieve support for iOS 4-7?
00:03:53 <+crash-x> joedj: is that project on github been updated for iOS 7 and rpetrich's theos fork?
00:04:09 <%joedj> crash-x: indeed, i believe so, although i think i've only tested down to ios6
00:04:10 <%joedj> crash-x: yes
00:04:22 <+crash-x> thats amazing, thank you!
00:04:25 -!- charliebashford [[email protected]] has quit [Client exited]
00:04:53 <+crash-x> if i wanted to get this working, what would i have to do? install rpetrich's theos fork and then I could just make package it or is there anything else I would have to install or do>
00:07:36 <%joedj> crash-x: there are a few other things like setting THEOS_PLATFORM_SDK_ROOT_armv6 (see the Makefile i just linked), and possibly switching to using %config(generator=internal) in your logos files unless you have an arm64 substrate you can link against (i think theos might be able to bootstrap this for you, but haven't tried)
00:08:04 <%joedj> crash-x: %config(generator=internal) might also be the default with rpetrich's fork, but i prefer to be explicit
Accessing the device's UDID
UDID access is blocked by default on iOS7 and iOS will substitute a generated ID in UIDevice's uniqueIdentifier property. Use MGCopyAnswer(CFSTR("UniqueDeviceID")) to get access to the device ID from system processes. Device ID is completely inaccessible from app store processes and some daemons.