Igor Delovski Board

[delovski]

SO - What are those little Xcode tips & tricks you wish you knew about 2 years ago?

"With a huge influx of newbies to Xcode I'm sure there are lots of Xcode tips and tricks to be shared."

[Ike]

SO - What #defines are setup by xCode when compiling for iPhone

The relevant definitions are TARGET_OS_IPHONE and TARGET_IPHONE_SIMULATOR,
which will be defined provided that you #include "TargetConditionals.h"

[delovski]

mobileorchard.com - 14 Essential Xcode Tips, Tricks and Resources for iPhone Devs

"Xcode is big. Apple’s Xcode Workspace Guide, a terse inventory of its
features, is 116 pages. Xcode’s preference window has 13 sections, each
with a dozen or more items. There are at least 206 keyboard shortcuts. I
started counting menu items but gave up the ghost when I’d topped 300
items before finishing the third section."

[Ike]

adc - How to add include path and library path in XCode project

"Under "Search Paths" group I added

Header Search Paths | /usr/include/libxml2/** .
Library Search Paths | /Users/heberlei/Development/amf/builf/Debug

Then for the "Release" version of the application I have a different "Library
Search Paths" pointing to the "Release" version of the library."

[delovski]

xcode-users list - Misspelled methods

"However, gcc can warn if you send an unknown message to an object. Take
a look at: -Wstrict-selector-match -Wundeclared-selector"

[delovski]

MF - Recommended Reading for Snow Leopard

"There's a lot of new knowledge to take in with Snow Leopard; the following
links are ones that either I've personally found helpful, or I believe contain
fairly essential pieces of information for dealing with the new OS. The first
four links are the really important ones."

[delovski]

so - Using static library in an application crashes the device but
not the iphone simulator

"This is due to a bug in the current SDK linker. See..."

[Ike]

Domain of the Bored - Warnings I turn on, and why

"I've started turning on most of Xcode's warning options and one warn-
ing-related build setting in all of my personal projects. I suggest you do
the same."

[delovski]

Jeff LaMarche - Xcode Project Template Expansion Macros

"Earlier today, I lazy-tweeted to see if anyone had a definitive list of Xco-
de's project expansion macros. If you open up a project template and poke
around, you'll see both in filenames and in file contents, these all-cap words
surrounded by three underscores like ___PROJECTNAME___. These are re-
placement macros that get replaced with some other value when you create
your project based on that template. ___PROJECTNAME___, for example,
gets replaced with the name of the project as it was typed in by the user into
the new project assistant."

[Ike]

MF - iOS Documentation in Xcode 4?

"... go into XCode | Preferences, under the Documentation tab, see if you
have GET buttons next to the iOS Libraries. If you do, click them and they
will download."

[delovski]

pragmaticstudio.com - Xcode4Shortcuts.pdf

[delovski]

if(self = [super init]) - LLVM warning! How are you dealing with it?

"Bring up the project navigator and choose your project. In the main window
that appears, choose "All". Under the section "LLVM compiler 2.0 - Warnings",
choose "Other Warning Flags". Add the flag "Wno-idiomatic-parentheses" for
both Debug and Release."

Edit - "Missing Braces and Parentheses" is a better thing to use

[delovski]

http://comments.gmane.org/gmane.comp.compilers.clang.devel/10755

"I noticed that clang++ seems to always use the option '-Wswitch-enum'. Shouldn't it be turned off by default? Or is there a way to turn it off?"

[Ike]

bugsense - Creating a framework for iOS

"The advantage of making a framework is that it makes life a lot easier for
our users. You just add the framework in your project and you’re good to
go. We can bundle images and XIB files without making installation more
complex."

[delovski]

so - Issue with iphone sdk 4.2.1

"warning: Unable to read symbols for /Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.2.1
(8C148a)/Symbols/System/Library/PrivateFrameworks/"

[Ike]

macworld.com - Restoring PPC, SDK 10.4/10.5 and GCC 4.0 Support to Xcode4

"Unfortunately Apple decided to drop support for PPC, SDKs 10.4/10.5 and
GCC 4.0 in Xcode4. This hasn't been done for technical reasons, though, but
only because Apple wanted to do that."

[Ike]

Miso Engineering - Work Efficiently With XCode

"Below are some tips and tricks I use in my everyday coding sessions. This
post has the beginner in mind, though I hope advanced and expert XCode
users may occasionally find something useful."

[delovski]

Touch Code Magazine - XCode 4 – an honest opinion

"I’ll be ranting in this post, so if you are not willing to take constructive
criticism towards Apple, do not read."

[delovski]

lists.apple.com - Xcode - An Apple Embarrassment

"Apple and Xcode are an embarrassment to professional software development."

[Ike]

http://openradar.appspot.com/10597149

[Ike]

http://forums.macrumors.com/showthread.php?t=1355158

[delovski]

[delovski]

so - How to unlink a framework on program start

"The problem is the Dropbox API requires at least iOS 4.2. Ok.

I decided to save the possibility of using the program under 3.1.3, but if
it is 4.2 and higher, there will be Dropbox functionality. ... When I link
Dropbox.framework to my project, the program works great on iPhone
Simulator, but it cannot be started on my iPhone 3.1.3.

Symbol not found: _kSecAttrAccessible from: Security.framework

...

Under 'Target Membership' change 'Required' to 'Optional.'"

[Ike]

so - Adding Older iOS SDKs to Xcode 4.1 in Lion

"Actually it is possible to add older SDKs as long as you can still get your
hands on an older version of Xcode with the older SDK."

[delovski]

https://forums.dropbox.com - Rebuilding DropboxSDK for iOS

"Here's how the framework is built:

xcodebuild -configuration Release -target DropboxSDK
xcodebuild -configuration Release -target DropboxSDK -sdk iphonesimulator
cp -R DropboxSDK/build/Release-iphoneos/DropboxSDK.framework/ $(SDK_BUILD_DIR)/DropboxSDK.framework
lipo -output $(SDK_BUILD_DIR)/DropboxSDK.framework/DropboxSDK -create DropboxSDK/build/Release-iphoneos/DropboxSDK.framework/DropboxSDK -arch i386 DropboxSDK/build/Release-iphonesimulator/DropboxSDK.framework/DropboxSDK

Basically, you build the framework for the device and the simulator, and then use lipo on the resulting object files to create a fat binary."

[delovski]

Apple Support Forum - xcode 3.2.6 installation failed?

"I'm on OS 10.6.8 on a macbook air and trying to install the xcode 3.2.6 that
i downloaded from apple. I have plenty of free disk space. When I run the
installer I get the message: The Installation Failed. An unknown installation
error has occured. I've tried installing from a new admin user. I'm not sure
where to look or how to solve this problem. Any ideas?"

[Ike]

so - Apple PrefPane example fails to build with clang error objecting to both -fobjc-arc and -fobjc-gc

"All 64-bit preference panes are expected to use garbage collection. Using
garbage collection will, in most cases, simplify your code and reduce the
likelihood of memory leaks."

[delovski]

puredata - How Do I Make Fat Binaries?

Using lipo:

lipo -create <file1> <file2> <...> -output <file>

[delovski]

universalmind - What every iOS Developer Should Be Doing with Instruments

"You've just wrapped up development on a shiny new iOS project and
have done your best to ensure that the app doesn't crash and it seems to
run ok on your test devices, but is it ready to submit? If you haven't done
any profiling in Instruments, the answer is probably no. Just because it
doesn't crash doesn't mean that it's going to behave and run well on your
user's devices"

[delovski]

wikihow.com - How to Make a DMG File on a Mac

"One way to store or group files on a Mac is to create a Disk Image. A Disk
Image is a file which has the properties of a separate hard drive or CD and
allows for greater password protection and compression. It has a size limit
and options for encryption to keep your files safe and secure. While there
are a few applications that perform this task for you, it is recommended
that you complete this process manually."

Apple - Disk Utility for Mac: Create a disk image using Disk Utility

[Ike]

adc - Exporting Your Framework Interface

"For ANSI C-based code, you can usually just prefix an underscore character
to the name of a function or variable to get the symbol name. For languages
like C++, which uses mangled symbol names, you may need to run the nm
tool to get the list of existing symbol names. Run nm with the -g option to
see the currently exported symbols. You can then copy the output from the
tool and paste it into your exports file, ..."

[Ike]

jontolof - Using xcconfig files for your XCode Project

"Working as a developer you sooner or later will have to mess with the projects
build settings. It might be that you have to link to added frameworks or static
libraries, or that some of these need you to set other C flags or whatever.

Doing so changes the project file, and even though the structure of the project
file has greatly improved over the years, you often end up solving project file
conflicts manually. By moving these settings to explicit xcconfig files and telling
XCode to use these xcconfig files for the build process, your changes never
really messes with the project file, but instead you make changes to these Key-
Value text files."


More on SO: How to change output directory for a target

"This is what I put in an Xcode 6.2 .xcconfig file so intermediate files and
executables go into their "traditional" locations:"

[Ike]

so - How exactly does __attribute__((constructor)) work?

"So, the way the constructors and destructors work is that the shared object
file contains special sections (.ctors and .dtors on ELF) which contain referen-
ces to the functions marked with the constructor and destructor attributes,
respectively. When the library is loaded/unloaded the dynamic loader program
(ld.so or somesuch) checks whether such sections exist, and if so, calls the
functions referenced therein."

[Ike]

git - facebook/xcbuild - Xcode-compatible build tool.

"xcbuild is an Xcode-compatible build tool with the goal of providing faster
builds, better documentation of the build process and running on multiple
platforms (in particular OS X and Linux)"

[Ike]

so - install_name_tool to update a executable to search for dylib in Mac OS X

"This is the command to accomplish the change:

install_name_tool -id "@loader_path/../lib/libtest.dylib" libtest.dylib

Or use rpath:

install_name_tool -id "@rpath/libtest.dylib" libtest.dylib

The binary tries to find the library, it knows where it is located from
install_name_tool -add_rpath "@loader_path/../lib" myapp. It loads the
library, and the library's id is @rpath/libtest.dylib where @rpath is set to
@loader_path/../lib in the executable binary to make the match."

[Ike]

apple.com - What's New in Xcode 9

[delovski]

-Wno-idiomatic-parentheses // if (self = [self init])

[delovski]

iOS-factor

"A methodology for building high-quality iOS apps on a solid architecture

I. Dependencies
II. Config
III. Dev/prod parity
IV. Deployment
V. Prefer local over remote
VI. Backwards compatible APIs
VII. App versioning
VIII. Persistence of data"

[Ike]

r - How to configure base SDK vs. deployment target when wanting to support at least iOS 11.0?

"OK, I just found the Unguarded availability compiler flag. It does seem
to throw errors when I use APIs not available in 11.0. Hope I can trust that
thing."

[Ike]

so - Profile doesn't match the entitlements file's value for the application-identifier entitlement

"I am trying to upload an app to the app store and I am getting this error on
the page that has the certs. As far as I can tell I have changed the field so
they have matched, but I am missing something."

[delovski]

r - Xcode Build Settings in Depth

More: The Unofficial Guide to xcconfig files - PDF

[Ike]

git - Using iOS 13/13.1 devices with Xcode 10.3 (instead of Xcode 11)

"The trick is to link the DeviceSupport folder from the beta to the stable
version. sudo needed if you run the Mac App Store version. Always download
the dmg instead... you'll thank me later "

[delovski]

allaboutapps.at - Xcode Alternative Icons

"Xcode beta season is over but it's still the time of the year where iOS
developers usually have multiple Xcode version installed. Distinguishing
one from another isn't easy if you have multiple identical icons in the dock
and, like me, getting reminded by Xcode that your project's Swift version
isn't compatible."

[Ike]

so - Embedded binary is not signed with the same certificate as the parent app

"Simple way in my case check this screen shot i am done"

[Ike]

git - XcodeBenchmark

"XcodeBenchmark is initially created for Max Tech YouTube channel to compare
the performance of new iMacs 2020.

I believe the results will help developers to make the right cost/performance
trade-off decision when choosing their next Mac."

[Ike]

r - Is it possible to increment version and build numbers automatically

[Ike]

r - Why is it so painful to update Xcode?

"Never. install. xcode. through app store
https://medium.com/@marcusziade/xcode-management-with-xcodes-aria2-a715ec2b19

I learnt about xcodes/aria2 solution and it has been a godsend. You can
install/update/switch between Xcode versions within minutes depending on
your internet connection.

...

I recently discovered 'xcodes' and now it's super easy to get the versions I
want: https://github.com/RobotsAndPencils/xcodes
I had the app store xcode until my watch got an update beyond what was
supported and borked a day of work."

[Ike]

r - Issues with Mac M1 C library

"New in macOS Big Sur 11.0.1, the system ships with a built-in dynamic linker
cache of all system-provided libraries. As part of this change, copies of dynamic
libraries are no longer present on the filesystem."

[Ike]

developer.apple.com - Xcode 10: iPhone has denied the launch request

"Solution 1: open System Prefrences -> Users & Groups -> Add a user account
(build with new user is successfully

Solution 2: open Keychain Access -> choose System, All Items -> delete
certificate Apple Worldwide Developer Relations Certification Authority"

And if adding the key fails:

[Ike]

apple - Minimum requirements and supported SDKs

Xcode Version
Minimum OS Required
SDK
Architecture
Deployment
Targets
Simulator
Swift

[Ike]

Creating a Personal Access Token for Xcode

Github Account for Xcode

https://www.en.techgaku.com/configure-github-account-to-xcode/

In my case, I checked the following items.

admin:public_key
write:discussion
repo
user
project

[Ike]

so - Preprocessor macro for OS X targets?

[Ike]

adc - Build settings reference

"Show Diagnostic Output:

Setting name: REZ_SHOW_DEBUG_OUTPUT

Enabling this option causes version and progress information to be written
when compiling resource manager resources."

[Ike]

so - Detect gcc as opposed to msvc / clang with macro

[Ike]

So, -Wno-unused-but-set-variable did not exist before but if I syncronize
projects with the Github, Xcode will have unrecognized flag warning so
-Wno-unknown-warning-option seems to do the trick

-Wall
-Wno-unused-variable
-Wno-parentheses
-Wno-unused-but-set-variable
-Wno-unknown-warning-option

[Ike]

so - iOS scheme goes missing when I branch my project (Xcode 4.2)

"From my master branch, I exported the schemes I needed - I did by
navigating to Product > Scheme > Manage Schemes... on the Xcode menu.
I then selected the schemes I wanted to export (i.e. Development and
Release in my case). Finally, I chose the Export... option after clicking on
the gear icon as shown in the picture below."

[Ike]

adc - Adding package dependencies to your app

"To add a package dependency to your Xcode project, select File > Add
Package Dependency and enter its repository URL. You can also navigate
to your target's General pane, and in the 'Frameworks, Libraries, and
Embedded Content' section, click the + button, select Add Other, and
choose Add Package Dependency."

[Ike]

apple - Both ios-x86_64-simulator and ios-arm64-simulator represent two equivalent library definitions. XCFramework for iOS simulator on M1 & Intel Mac? How?

"You should never use lipo to merge, say, an arm64 iOS slice with an x86_64
iOS Simulator slice, because those slices are for different platforms. However,
using lipo to merge an arm64 iOS Simulator slice (for the simulator running
on an Apple silicon Mac) with an x86_64 iOS Simulator slice (for the simulator
running on an Intel Mac) is standard operational procedure."

[Ike]

Apple - Configuring a Project for SDK-Based Development

"You can use features from system versions later than the deployment target,
up to and including the OS version you've selected as your base SDK,
but you must check for the availability of new features, as described in Using
Weakly Linked Classes in iOS and Using Weakly Linked Methods and Functions.

For possible values and more information about build settings in Xcode, see
Building for Multiple Releases of an Operating System in Xcode Project
Management Guide, Xcode Build System Guide and Running Applications in iOS"

[Ike]

r - WORKAROUND: Slow debugging with Xcode 15 + iOS 17

1. Disconnect iPhone from USB cable if already connected
2. Put iPhone in airplane mode
3. Connect to USB cable and wait for Xcode to finish connecting to it
4. Take iPhone out of airplane mode

[Ike]

so - CGContext invalid context 0x0

"Try this: In xcode add symbolic breakpoint to CGPostError. (Add symbolic
breakpoint, and to Symbol field type CGPostError)"

[Ike]

so - Sandboxing issue in Xcode Run Script Phase

"Check your project build settings:

'User Script Sandboxing' - if it is set to Yes, change it to No."