Linker Compile Error Hello world

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What steps will reproduce the problem?
1. build the toolchain and try to compile hello world

What is the expected output? What do you see instead?
compiled hello world,

/usr/local/bin/arm-apple-darwin-ld: Undefined symbols:
.objc_class_name_HelloApplication
.objc_class_name_NSAutoreleasePool
_UIApplicationMain
_objc_msgSend
collect2: ld returned 1 exit status

What version of the product are you using? On what operating system?
debian etch

Please provide any additional information below.
 here is the error

/usr/local/bin/arm-apple-darwin-ld: Undefined symbols:
.objc_class_name_HelloApplication
.objc_class_name_NSAutoreleasePool
_UIApplicationMain
_objc_msgSend
collect2: ld returned 1 exit status

Original issue reported on code.google.com by david.m....@gmail.com on 5 Feb 2008 at 9:24

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here is the error when i try to compile hello.m
TheCrapTop:/home/davo/c/iphone-c/new# arm-apple-darwin-cc hello.m
/usr/local/bin/arm-apple-darwin-ld: Undefined symbols:
.objc_class_name_HelloApplication
.objc_class_name_NSAutoreleasePool
_UIApplicationMain
_objc_msgSend
collect2: ld returned 1 exit status

Original comment by david.m....@gmail.com on 6 Feb 2008 at 10:56

[GoogleCodeExporter]

I'm also getting the same Undefined symbols errors. I built the open toolchain 
on my Mac Leopard machine 
from instructions Zdziarski's new "iPhone Open Application Development" 
O'Reilly book. A standard C++ 
HelloWorld program compiles and links fine, and even runs on the iPhone. I 
attached "gcc -v" output in case 
that helps.

HEAVENLY=/usr/local/share/iphone-filesystem ; 
LLVMOBJDIR=/Users/admin/src/llvm-svn ; arm-apple-
darwin-gcc -v -o MyExample MyExample.m SimpleWebView.m -lobjc -framework 
CoreFoundation -
framework Foundation

Thanks to anyone who can point me in the right direction.

I'm also confused why I get this warning. I did export 
FLAGS_FOR_TARGET="-mmacosx-version-min=10.1" 
as described in book.

/usr/local/bin/arm-apple-darwin-ld: warning unknown -macosx_version_min 
parameter value: 10.5.2 
ignored (using 10.1)

Original comment by Jamshi...@gmail.com on 9 Apr 2008 at 9:08

Attachments:

• badcompileverbose.txt

[GoogleCodeExporter]

In my case the solution was to  add "-framework UIKit". Don't know if that was 
needed for the sample app I 
was trying to compile, or if that should be a default, or if something is wrong 
with my toolchain build. The 
book just says "-framework CoreFoundation -framework Foundation" is needed.

I also had to edit /usr/local/arm-apple-darwin/include/UIKit/UIWebView.h to 
remove an import and add 
another, and to comment out "<UIFormControl>".

/*!!!#import "UIKeyboardInputProtocol.h"*/
#import <UIKit/UIKeyboardInput.h>
...
      DOMNode/*!!!<UIFormControl>*/ *element;

Original comment by Jamshi...@gmail.com on 10 Apr 2008 at 2:42

[GoogleCodeExporter]

Very similar error happens on my MacBook with Leopard.
I compiled the toolchain as described on 
http://wikee.iphwn.org/howto:toolchain_on_leopard_aspen 

I have attached the errors as textfile.

Original comment by ben.psy...@googlemail.com on 21 Jul 2008 at 11:21

Attachments:

• error1.txt
• error2.txt

[GoogleCodeExporter]

Hi ben, to remove errors about missing references from _libgcc, you can use 
these 
flags for linker:
LDFLAGS = \
        -framework CoreFoundation       \
        -framework Foundation   \
        -framework UIKit        \
        -framework CoreGraphics \
        -L/usr/local/share/iphone-filesystems/usr/lib/  \
        -L/usr/local/arm-apple-darwin/lib       \
        -F/usr/local/share/iphone-filesystems/System/Library/Frameworks \
        -F/usr/local/share/iphone-filesystems/System/Library/PrivateFrameworks \
        -lobjc -lSystem.B -lgcc_s.1 -lstdc++.6

I follow your same link to compile my toolchain. Now still erros about 
missing .objc_ references :(

Bye,
Salvatore

Original comment by ans...@gmail.com on 7 Aug 2008 at 4:47