iOS Simulator Need to compile arm64 with simulator libs

[danoli3]

This involves also changing to use apple's new requirement of .frameworks to encapsulate and name the libraries !

Which in turn involves changing core templates in iOS / tvOS !

[danoli3]

Also BITCODE is required now

[ofTheo]

I think this is a big priority now as we're starting to see issues on the forum with people getting errors when using the simulator.

Probably another option which might be a bit less work would be to separate out the libs for iOS Device and Simulator by folder and then link to them based on target.

eg:
libs/ios/device/opencv.a
libs/ios/simulator/opencv.a

Upside is it would be backwards compatible.
Downside is it might not work for catalyst apps?

[danoli3]

catalyst binaries could also live in their own folder under that idea
libs/ios/catalyst/opencv.a

probably best to look at converting to the new framework style though as another issue

[danoli3]

Apple no longer requires BITCODE :D

Okay massive progress here!
Due to the CMake overhaul of dependancies and finalising Patching dependancies on the Android / Massive Apothecary changes PR ! Branching off that I have successfully got many dependancies building with support for the targets:

• iOS arm64
• iOS arm64 (simulator)
• iOS x86_64 (simulator)
• iOS x86_64 (Mac Catalyst)
• iOS arm64 (Mac Catalyst)
• macOS arm64
• macOS x86_64
• tvOS arm64
• tvOS x86_64 (simulator)
• tvOS arm64 (simulator)

Furthermore, I have code that will be able to merge these into the new framework system to allow different lib types in the same fat lib. These can even include multiple platforms in one, or separated we can decide later

[ofTheo]

Yay!! 👏👏👏 That’s awesome news!

[kritzikratzi]

hi!

@danoli3 do you have any code you want to share yet?

i just discovered your notes while trying to solve the same issue with a different approach (generate fat somelib_iphoneos.a and a fat somelib_iphonesimulator.a, then change coreof.xconfig to link to somelib_${PLATFORM_NAME}.a.

happy to share my changes, but they're not in a usable state (in the middle of looking into curl+openssl)

[kritzikratzi]

well, so things slowly start to work on my end. here is my current diff:

openFrameworks

the only change is adding ${PLATFORM_NAME} to all libs in coreof.xcconfig:

	 //------- Libraries
	 LIB_OF = "$(OF_PATH)/libs/openFrameworksCompiled/lib/ios/libofxiOS_${PLATFORM_NAME}_${CONFIGURATION}.a"
	-LIB_FREEIMAGE = "$(OF_PATH)/libs/FreeImage/lib/ios/freeimage.a"
	-LIB_FREETYPE = "$(OF_PATH)/libs/freetype/lib/ios/freetype.a"
	-LIB_TESS = "$(OF_PATH)/libs/tess2/lib/ios/tess2.a"
	+LIB_FREEIMAGE = "$(OF_PATH)/libs/FreeImage/lib/ios/freeimage_${PLATFORM_NAME}.a"
	+LIB_FREETYPE = "$(OF_PATH)/libs/freetype/lib/ios/freetype_${PLATFORM_NAME}.a"
	+LIB_TESS = "$(OF_PATH)/libs/tess2/lib/ios/tess2_${PLATFORM_NAME}.a"
	 //LIB_BOOST_SYSTEM = "$(OF_PATH)/libs/boost/lib/ios/boost_system.a"
	 //LIB_BOOST_FS = "$(OF_PATH)/libs/boost/lib/ios/boost_filesystem.a"
	 //LIB_BOOST = $(LIB_BOOST_SYSTEM) $(LIB_BOOST_FS)
	-LIB_CURL = "$(OF_PATH)/libs/curl/lib/ios/curl.a"
	-LIB_URIPARSER = "$(OF_PATH)/libs/uriparser/lib/ios/uriparser.a"
	-LIB_PUGIXML = "$(OF_PATH)/libs/pugixml/lib/ios/pugixml.a"
	+LIB_CURL = "$(OF_PATH)/libs/curl/lib/ios/curl_${PLATFORM_NAME}.a"
	+LIB_URIPARSER = "$(OF_PATH)/libs/uriparser/lib/ios/uriparser_${PLATFORM_NAME}.a"
	+LIB_PUGIXML = "$(OF_PATH)/libs/pugixml/lib/ios/pugixml_${PLATFORM_NAME}.a"
	 
	 
	 MISC_FLAGS = "-ObjC"

Apothecary

It's a bit more involved. Mostly I add two new functions to the main apothecary scripts:

• ios-build is more or less a replacement for ios_configure.sh. it manages the combinations of platforms+architectures and takes care of combining the results into two fat libs (one for iphoneos and one for iphonesimulator). when calling it you provide a callback that builds for a single specific architecture, the function takes care of the rest.
• ios-copy copies the library files into the result folder.

Well, here is the patch:
arm64_sim.patch
It should apply cleanly on 135a503

There are some nonsense changes, and i haven't updated all formulas yet, but everything that is needed for ios should build.

ps. just a little heads up... maybe freeimage does not build. it's the first one i did, and ios-build is based on the freeimage script. over time i may or may not have modified ios-build so much that freeimage doesn't build anymore. well, the work is not done yet, what can i say :)

[kritzikratzi]

@danoli3 are you still working on this?

my changes seem to work (i still have issues with sound streams in the simulator, but that seems unrelated).

i'm happy to clean up my changes and make a PR, but i don't really to want to waste my time (or yours) if there's already a better solution

[danoli3]

Completed