Basic C function ends up with error when trying to compile + example

Question

Basic C function ends up with error when trying to compile + example

Hello Guys,

Gotta problem here with normal function in c:

My configuration:

OS 10.8

Xcode 5.0.2

Code:

	void printMessage (void) {

	NSLog(@"Test");
	}

	printMessage();

Note that this ends up with error:

ProcessPCH /Users/cistyprofil/Library/Developer/Xcode/DerivedData/test-butpvmdeqxfberfqrxz fkcygoghf/Build/Intermediates/PrecompiledHeaders/test-Prefix-bjoindrfwbhakucgefd kktxqsafj/test-Prefix.pch.pch test/test-Prefix.pch normal i386 objective-c com.apple.compilers.llvm.clang.1_0.compiler

cd /Users/cistyprofil/Documents/CA/test

setenv LANG en_US.US-ASCII

/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/ usr/bin/clang -x objective-c-header -arch i386 -fmessage-length=0 -fdiagnostics-show-note-include-stack -fmacro-backtrace-limit=0 -std=gnu99 -fobjc-arc -Wno-trigraphs -fpascal-strings -O0 -Wno-missing-field-initializers -Wno-missing-prototypes -Werror=return-type -Wno-implicit-atomic-properties -Werror=deprecated-objc-isa-usage -Werror=objc-root-class -Wno-receiver-is-weak -Wno-arc-repeated-use-of-weak -Wduplicate-method-match -Wno-missing-braces -Wparentheses -Wswitch -Wunused-function -Wno-unused-label -Wno-unused-parameter -Wunused-variable -Wunused-value -Wempty-body -Wuninitialized -Wno-unknown-pragmas -Wno-shadow -Wno-four-char-constants -Wno-conversion -Wconstant-conversion -Wint-conversion -Wbool-conversion -Wenum-conversion -Wshorten-64-to-32 -Wpointer-sign -Wno-newline-eof -Wno-selector -Wno-strict-selector-match -Wundeclared-selector -Wno-deprecated-implementations -DDEBUG=1 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/ SDKs/MacOSX10.8.sdk -fasm-blocks -fstrict-aliasing -Wprotocol -Wdeprecated-declarations -mmacosx-version-min=10.8 -g -Wno-sign-conversion -iquote /Users/cistyprofil/Library/Developer/Xcode/DerivedData/test-butpvmdeqxfberfqrxz fkcygoghf/Build/Intermediates/test.build/Debug/test.build/test-generated-files.h map -I/Users/cistyprofil/Library/Developer/Xcode/DerivedData/test-butpvmdeqxfberfqr xzfkcygoghf/Build/Intermediates/test.build/Debug/test.build/test-own-target-head ers.hmap -I/Users/cistyprofil/Library/Developer/Xcode/DerivedData/test-butpvmdeqxfberfqr xzfkcygoghf/Build/Intermediates/test.build/Debug/test.build/test-all-target-head ers.hmap -iquote /Users/cistyprofil/Library/Developer/Xcode/DerivedData/test-butpvmdeqxfberfqrxz fkcygoghf/Build/Intermediates/test.build/Debug/test.build/test-project-headers.h map -I/Users/cistyprofil/Library/Developer/Xcode/DerivedData/test-butpvmdeqxfberfqr xzfkcygoghf/Build/Products/Debug/include -I/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchai n/usr/include -I/Users/cistyprofil/Library/Developer/Xcode/DerivedData/test-butpvmdeqxfberfqr xzfkcygoghf/Build/Intermediates/test.build/Debug/test.build/DerivedSources/i386 -I/Users/cistyprofil/Library/Developer/Xcode/DerivedData/test-butpvmdeqxfberfqr xzfkcygoghf/Build/Intermediates/test.build/Debug/test.build/DerivedSources -F/Users/cistyprofil/Library/Developer/Xcode/DerivedData/test-butpvmdeqxfberfqr xzfkcygoghf/Build/Products/Debug --serialize-diagnostics /Users/cistyprofil/Library/Developer/Xcode/DerivedData/test-butpvmdeqxfberfqrxz fkcygoghf/Build/Intermediates/PrecompiledHeaders/test-Prefix-bjoindrfwbhakucgefd kktxqsafj/test-Prefix.pch.dia -MMD -MT dependencies -MF /Users/cistyprofil/Library/Developer/Xcode/DerivedData/test-butpvmdeqxfberfqrxz fkcygoghf/Build/Intermediates/PrecompiledHeaders/test-Prefix-bjoindrfwbhakucgefd kktxqsafj/test-Prefix.pch.d -c /Users/cistyprofil/Documents/CA/test/test/test-Prefix.pch -o /Users/cistyprofil/Library/Developer/Xcode/DerivedData/test-butpvmdeqxfberfqrxz fkcygoghf/Build/Intermediates/PrecompiledHeaders/test-Prefix-bjoindrfwbhakucgefd kktxqsafj/test-Prefix.pch.pch

error: -fobjc-arc is not supported on platforms using the legacy runtime

Command /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/ usr/bin/clang failed with exit code 1

Please advise.

MacBook Pro (15-inch Late 2008), OS X Mountain Lion (10.8.5)

Posted on Jan 21, 2014 2:07 PM

Reply

Answer 1

msuper69

Level 6

8,689 points

Jan 21, 2014 3:09 PM in response to Community User

http://stackoverflow.com/questions/20361445/deploying-to-os-x-10-6-and-fobj-arc- is-not-supported-on-platforms-using-the-le

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Answer 2

etresoft

Level 8

46,098 points

Jan 21, 2014 4:24 PM in response to Community User

How did you create this project? When you are just getting started, it is best to stick to the command line. Xcode adds a whole lot of complexity. If you do use Xcode, you must choose the appropriate project template. In this case that would be a command-line tool in C.

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Answer 3

Jan 21, 2014 5:46 PM in response to Community User

You also need a lot more code then what you have shown, a main() routine as a minimum.

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Answer 4

Jan 21, 2014 8:30 PM in response to Community User

Hello,

sorry, the whole code is:

#import <Foundation/Foundation.h>

int main(int argc, const char * argv[])

{

@autoreleasepool {

void printMessage (void) {

NSLog(@"Test");

}

printMessage();

}

return 0;

}

I have created command line tool in xcode for mac os.

I have used the tutorial below to do that. ( just have put the function definition up, otherwise, I will get error message, that this is not ok with c99.)

http://www.youtube.com/watch?v=bDwSTAe7Bzo&feature=c4-overview-vl&list=PLD05642A D0D531E1B

To the ARC, it is on by default on Xcode5. If I would like to make it running with ARC, would the code be any different. If yes, can you please post example?

Thanks.

Reply

Answer 5

etresoft

Level 8

46,098 points

Jan 22, 2014 6:43 AM in response to Community User

You cannot nest complete functions inside each other.

Start on the command line. Start with an introductory C book like K & R. You can't take shortcuts.

Reply

Answer 6

Jan 22, 2014 7:25 AM in response to etresoft

ok, got it, nested functions do not work.

Regarding that book you recommend, I guess it is:

http://zanasi.chem.unisa.it/download/C.pdf

I was thinking about what is the best way to learn Objective C and it seems that it is the best to simply start with the C in cli then move to objective c in cli and then move to Cocoa.

Guys, If you would suggest different approach, please let me know.

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Answer 7

etresoft

Level 8

46,098 points

Jan 22, 2014 7:58 AM in response to Community User

Just don't get hung up on language. All languages have a syntax. They can all do pretty much the same stuff. Syntax is irrelevent. You aren't learning a language, you are learning how to program. Once you know that, the language doesn't matter (usually).

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Answer 8

Jan 22, 2014 8:02 AM in response to Community User

I recommend Programming in Objective-C by Kochan as a good intro to Objective-C. He assumes no prior C experience, introducing what C is needed as it comes up.

Also the basic chapters are all command line based removing one of the biggest hurdles to learning Objective-C on the Mac and that is learning the GUI.

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Answer 9

Jan 22, 2014 11:18 AM in response to Community User

Try this to start with:

#include <stdio.h>

int main(int argc,constchar* argv[])

{

// insert code here...

printf("Hello, World!\n");

return0;

}

This is the default source code you see when you create a command line tool using XCode.

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