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Re: problem with libraries

From: Eric Wasylishen
Subject: Re: problem with libraries
Date: Mon, 14 Nov 2011 15:12:58 -0700


The .h files do not need to be included in the GNUmakefile; you just have to include them in your .m files with a line like: #import "MyHeader.h"

typically I use the line:
$(APP_NAME)_OBJC_FILES = $(wildcard *.m)
in my GNUmakefile, which will compile all .m (implementation files) in the current directory.

It may help to check out these examples:

and the docs at


On 2011-11-14, at 3:02 PM, Thanasis Petridis wrote:

Hello again
I have a new problem. 

How can I compile in objective-C when I have the implementation code, the class main and the interface code in different files ?

For example I would like to have the main class in the file "test.m", and the interface in the file Fraction.h and the implementation in the file Fraction.m .
What should I have to write inside the GNUmakefile file? 


On Tue, Nov 8, 2011 at 12:21 AM, Thanasis Petridis <address@hidden> wrote:
Thanks for the answers Adam and Richard!

On Mon, Nov 7, 2011 at 4:54 PM, Richard Frith-Macdonald <address@hidden> wrote:

On 6 Nov 2011, at 19:59, Thanasis Petridis wrote:

> Hello. My name is Thanasis.
> First of all sorry for my poor english.
> Secondly, if this is the wrong mailing list or if there is a solution for my problem, just tell me which is the correct mailing list or where is the answer.
> I have a PC running on Windows 7 and I want to start programming apps for iOS. So I figured out that I should start from learning the Objective-C language.
> So I searched in the Internet and I found that I can program Objective-C on windows 7 through GNUstep. I install in the directory c:\GNUstep the following 3 setups
> -gnustep-msys-system-0.28.1-setup
> -gnustep-core-0.28.0-setup
> -gnustep-devel-1.3.0-setup
> I have created a file hello.m in the folder c:\new
> I started the shell application
> I wrote c:\new
> and then I wrote g++ hello.m

This is where you went wrong ... you can't really build code trying to use a compiler directly because there are various options, include directories, and libraries which need to be used.
You should use gnustep-make to automate the build process and fill in all those options for you.

See for a good starting point.

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