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Author Topic: iOS development with Lazarus  (Read 8853 times)

aidv

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iOS development with Lazarus
« on: May 19, 2015, 01:52:26 pm »
Hi all!

I am trying to setup all bits and pieces to get my iOS dev up and running but it fails.

I am using a MacBook Air 13" with Yosemite 10.10.3 and XCode 6.

I have followed the instructions found here: http://blog.naver.com/simonsayz/220305479793

But when I get to the point to install the crosscompiler and it asks me to enter the path of the SDK,
it doesnt work no matter what path I give it.

Does anyone have an up-to-date instruction on how to get started with iOS development with Lazarus?

aidv

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Re: iOS development with Lazarus
« Reply #1 on: May 21, 2015, 10:00:19 pm »
Anyone?

aidv

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Re: iOS development with Lazarus
« Reply #2 on: May 22, 2015, 02:24:26 am »
Please anyone, XCode is a torture.

In pascal we can combine two strings simply by writing

myString := strA + strB;

in XCode the only way to do it apparently is by writing

self.myString = [NSString stringWithFormat:@"%@%@", strA, strB];

This community seriously needs to get a grip of this iOS dev thing,
I am willing to help, just tell me what to do.

skalogryz

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Re: iOS development with Lazarus
« Reply #3 on: May 22, 2015, 03:42:25 am »
what's the exact error you're getting when building (installing) the cross-compiler?

Are you sure you're using Xcode 6.2 and not Xcode 6.0? If you're using Xcode 6.0 you've to upgrade (it's free and easy). iOS 8.2 comes in Xcode 6.2 only.
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aidv

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Re: iOS development with Lazarus
« Reply #4 on: May 22, 2015, 02:26:50 pm »
Right now I'm stuck at

Code: [Select]
sudo /usr/local/lib/fpc/3.1.1/ppcrossarm -Cparmv7 -Cfvfpv3 -dIPHONEALL  -FD/Applications/Xcode.app/Contents/Developer iPhoneAll.pas
Free Pascal Compiler version 3.1.1 [2015/05/22] for arm
Copyright (c) 1993-2015 by Florian Klaempfl and others
Target OS: Darwin for ARM
Compiling iPhoneAll.pas
CAMetalLayer.inc(12,94) Error: Forward declaration "MTLDrawableProtocol" must be resolved before a class can conform to or implement it
NSFileWrapper.inc(29,19) Error: No matching implementation for interface method "initWithCoder(NSCoder):^objc_object;" found
CAMetalLayer.inc(23,12) Error: Identifier not found "_CAMetalLayerPrivatePtr"
CAMetalLayer.inc(23,35) Error: Error in type definition
CAMetalLayer.inc(27,54) Error: Identifier not found "MTLPixelFormat"
CAMetalLayer.inc(28,41) Error: Identifier not found "MTLPixelFormat"
UIActionSheet.inc(26,14) Fatal: Syntax error, "identifier" expected but "FUNCTION" found
Fatal: Compilation aborted

The code for CAMetalLayer.inc(12,94)

looks like this:
 
Code: [Select]
{$ifdef PROTOCOLS}

type
  CAMetalDrawableProtocol = objcprotocol external name 'CAMetalDrawable' (MTLDrawableProtocol)
    function texture: MTLTextureProtocol; message 'texture';
    function layer: CAMetalLayer; message 'layer';
  end;
{$endif}

I am using Version 6.3.1 (6D1002) and it has the XCode 8.3 SDK.

Any hints?


aidv

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Re: iOS development with Lazarus
« Reply #5 on: May 22, 2015, 03:02:15 pm »
I think I solved that particular problem.

All I did was to add "DefinedClassesMetal" to the uses clause of the unit "iPhoneAll.pas"

I commented out the following part in CAMetalLayer.inc

Code: [Select]
{$ifdef PROTOCOLS}

{type
  CAMetalDrawableProtocol = objcprotocol external name 'CAMetalDrawable' (MTLDrawableProtocol)
    function texture: MTLTextureProtocol; message 'texture';
    function layer: CAMetalLayer; message 'layer';
  end;}
{$endif}

{$ifdef CLASSES}

I don't get the previous error any longer.
« Last Edit: May 22, 2015, 03:18:07 pm by aidv »

aidv

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Re: iOS development with Lazarus
« Reply #6 on: May 22, 2015, 03:45:32 pm »
Now I'm stuck at

Code: [Select]
NSFileWrapper.inc(29,19) Error: No matching implementation for interface method "initWithCoder(NSCoder):^objc_object;" found
and when looking inside NSFileWrapper.inc I only see this line:

Code: [Select]
function initWithCoder (inCoder: NSCoder): instancetype; message 'initWithCoder:'; { NS_DESIGNATED_INITIALIZER }
I don't understand where the whole "^objc_object;" comes from.

Any ideas?

skalogryz

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Re: iOS development with Lazarus
« Reply #7 on: May 22, 2015, 04:43:29 pm »
initWithCoder comes from a protocol that NSFileWrapper implemented.
The protocol name is NSCoding. So you might want to check its declaration as well.

How is NSFileWrapper defined for you?
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aidv

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Re: iOS development with Lazarus
« Reply #8 on: May 22, 2015, 06:22:08 pm »
Alight. There are so many .inc and .pas files that contain NSCoding so I don't know where to begin.

Could you guide me on how to check its decleration.

Also, what do you mean with how the NSFIleWrapper is defined for me?

CCRDude

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Re: iOS development with Lazarus
« Reply #9 on: May 26, 2015, 08:03:00 am »
Did you use the pre-compiled headers or did you use the header parser? I remember issues with the parser the last times I tried.