Comments on [[lyxite blog] didLoad]: Compile Objective-C Programs Using gcc

Hi, Great article. I falls on that 1%. :) Thanks!

2011-11-08T19:49:37.356+08:00

Hi, Great article. I falls on that 1%. :) Thanks!

Doh! :-) Managed to edit out of my post that it ap...

2011-10-11T19:58:42.643+08:00

Doh! :-) Managed to edit out of my post that it applies to Windows 7...

Thanks for this article - it was a great help in g...

2011-10-11T19:56:22.511+08:00

Thanks for this article - it was a great help in getting started...

In case its helpful to anyone else, the following arguments worked for me:

gcc -o hello hello.m -I /GNUstep/System/Library/Headers -L /GNUstep/System/Library/Libraries/ -lobjc -lgnustep-base -fconstant-string-class=NSConstantString

Believe that the -lobjc step is required to link to the objective c runtime [Source: 'The definitive buid to gcc' (p34)]. I did try the suggestion in red that uses `gnustep-config --objc-flags` but got the error:

Foundation/Foundation.h: No such file or directory

Steps I followed were:
(a) Default installation of the following GNUstep packages:

GNUStep MSYS System: gnustep-msys-system-0.28.1-setup.exe

GNUstep core: gnustep-core-0.28.0-setup.exe

GNUstep devel: gnustep-devel-1.3.0-setup.exe

(b) Ran the GNUstep shell by opening a windows CMD shell and running: C:\GNUstep\msys\1.0\bin\sh.exe
(c) Within GNUstep shell changed directory to folder containing the hello.m file e.g. cd /c/mytestfolder
(d) Compiled using the command listed above

Hope this might help others starting out like me and thanks once again for the blog - would have taken alot longer without it...

Where do I save the hello.m file? To my c:\\ drive...

2011-09-28T02:28:48.183+08:00

Where do I save the hello.m file? To my c:\\ drive? I am using Windows. Thanks.

Hi, I'm compiling Objective-C code in Ubuntu ...

2011-07-14T05:32:21.142+08:00

Hi, I'm compiling Objective-C code in Ubuntu 11.04. To make things work I had to use
gnustep-config --variable=GNUSTEP_SYSTEM_HEADERS
and
gnustep-config --variable=GNUSTEP_SYSTEM_LIBRARIES
to find out the paths to use with -I and -L options.
Also I've received "The current setting for native-objc-exceptions does not match that of gnustep-base ... please correct this." error...
Fixed it by changing
#define BASE_NATIVE_OBJC_EXCEPTIONS 1
to
#define BASE_NATIVE_OBJC_EXCEPTIONS 0
in /usr/include/GNUstep/GNUstepBase/GSConfig.h

Everything works, thanks for the nice post.

2011-07-14T05:30:08.845+08:00

This comment has been removed by the author.

@lyxite Your description helped a lot! Thank You V...

2011-06-15T15:30:06.401+08:00

@lyxite
Your description helped a lot!
Thank You Very Much!!!!!!!!!!!

thanx a ton for the post.

2011-06-08T13:18:29.693+08:00

thanx a ton for the post.

2011-06-08T13:15:08.754+08:00

This comment has been removed by the author.

thanks for post, red text solve my error

2011-06-06T17:35:49.599+08:00

thanks for post, red text solve my error

Hi lyxite.. Am a beginner to Objective-C. Am using...

2011-04-14T19:42:06.711+08:00

Hi lyxite..
Am a beginner to Objective-C.
Am using GNUstep in windows.

When using the follwing command

$ gcc -o hello hello.m -I /GNUstep/System/Library/Headers -L /GNUstep/System/Library/Libraries -lobjc -lgnustep-base

c:/mingw/bin/../lib.gcc/mingw32/4.5.2/../../../../mingw32/bin/ld.exe: cannot find -lgnustep-base
collect2:ld returned 1 exit status

help me out!

for objc beginner on windows. here is the working ...

2011-04-04T15:05:02.099+08:00

for objc beginner on windows. here is the working fraction compiler on my machine. thanks for all posting.
$ gcc `gnustep-config --objc-flags` -o main main.m fraction.m -I /GNUstep/Syste
m/Library/Headers -L /GNUstep/System/Library/Libraries -lobjc -lgnustep-base -e
nable-auto-import

i'm not familiar with JGrasp, but the error ge...

2011-03-18T23:42:01.016+08:00

i'm not familiar with JGrasp, but the error generally means you have not specified a correct header directory for the Foundation framework. please locate it and include it using gcc -I flag.

I am trying to figure out how to use the JGrasp ID...

2011-03-17T09:58:21.594+08:00

I am trying to figure out how to use the JGrasp IDE on Windows 7, however I keep getting the same error:

pg1.m:1:34: fatal error: Foundation/Foundation.h: No such file or directory

Any suggestions? I have already tried pretty much ever suggestion on here though.

I saved the make file as GNUmakefile.txt and while...

2011-03-05T20:55:44.762+08:00

I saved the make file as GNUmakefile.txt and while I typed as make in GNUstep I get the error as no target specied and no make file found.
and also I get one more error as Undefined reference to __objc_class_name_Fraction error

Its a Interface and implementation process.
Pls help me what to do for this.

your mac solution is wrong... the linker flag is n...

2010-12-27T10:53:45.224+08:00

your mac solution is wrong... the linker flag is not correct.

You want to use the -framework flag. For example,

-framework Foundation

i have installed te GNU Setup for windows. When i ...

2010-12-11T15:26:11.368+08:00

i have installed te GNU Setup for windows. When i type gcc command uts giving below error

sh: gcc: command not found

Nice post, however on UBuntu 10.04 the compiler st...

2010-11-09T04:34:07.310+08:00

Nice post, however on UBuntu 10.04 the compiler still squeals about Foundation.h no matter if I put it up his face.
I guess a mac is the way to go if one's supposed to get serious about objective-c

I'm using your method to compile the "Hel...

2010-10-16T15:35:26.668+08:00

I'm using your method to compile the "Hello.m" in the iMac but found below errors:

imac:hello patrick$ gcc -o hello hello.m -L /System/Library/Frameworks/Foundation.framework/Foundation

ld: -L must be immediately followed by a directory path (no space)

collect2: ld returned 1 exit status

Then I deleted the space but found more errors:

imac:hello patrick$ gcc -o hello hello.m -L/System/Library/Frameworks/Foundation.framework/Foundation
ld: warning: path '/System/Library/Frameworks/Foundation.framework/Foundation' following -L not a directory
Undefined symbols:
"__objc_empty_vtable", referenced from:
_OBJC_METACLASS_$_HelloWorld in ccqZLB7P.o
_OBJC_CLASS_$_HelloWorld in ccqZLB7P.o
"_objc_msgSend", referenced from:
_main in ccqZLB7P.o
_main in ccqZLB7P.o
(maybe you meant: l_objc_msgSend_fixup_release, l_objc_msgSend_fixup_alloc )
"_objc_msgSend_fixup", referenced from:
l_objc_msgSend_fixup_alloc in ccqZLB7P.o
l_objc_msgSend_fixup_release in ccqZLB7P.o
(maybe you meant: l_objc_msgSend_fixup_release, l_objc_msgSend_fixup_alloc )
"__objc_empty_cache", referenced from:
_OBJC_METACLASS_$_HelloWorld in ccqZLB7P.o
_OBJC_CLASS_$_HelloWorld in ccqZLB7P.o
"_OBJC_CLASS_$_NSObject", referenced from:
_OBJC_CLASS_$_HelloWorld in ccqZLB7P.o
"___CFConstantStringClassReference", referenced from:
cfstring=hello world! in ccqZLB7P.o
"_NSLog", referenced from:
-[HelloWorld hello] in ccqZLB7P.o
"_OBJC_METACLASS_$_NSObject", referenced from:
_OBJC_METACLASS_$_HelloWorld in ccqZLB7P.o
_OBJC_METACLASS_$_HelloWorld in ccqZLB7P.o
ld: symbol(s) not found
collect2: ld returned 1 exit status

I downloaded and installed GNUstep on my Vista-64 ...

2010-10-15T10:53:00.983+08:00

I downloaded and installed GNUstep on my Vista-64 system a week ago and successfully compiled an Objective-C program. However, I just tried to repeat that compilation and it failed. I used the following command:

gcc `gnustep-config --objc-flags` -o prog1 prog1.m -I /GNUstep/System/Library/Headers -L /GNUstep/System/Library/Libraries -lobjc -lgnustep-base

This produced the following:

gcc: `gnustep-config: No such file or directory
cc1obj.exe: error: unrecognized command line option "-fobjc-flags`"

What am I doing wrong?

Tired of getting NSConstantString error.??? I may...

2010-09-26T03:44:17.977+08:00

Tired of getting NSConstantString error.???

I may help you..

include the foundation.h file and then compile

#import

for details..
go to http://kumargcchelp.blogspot.com/

Tremendous stuff. Saved me hours. Thanks!

2010-09-13T23:12:06.864+08:00

Tremendous stuff. Saved me hours.

Thanks!

thanks Lyx and Teo.... it works fine now on window...

2010-08-29T04:58:51.293+08:00

thanks Lyx and Teo.... it works fine now on windows XP

...now even i am in the 1% gang..

Thanks once again

I take back what I said, I had a spelling mistake ...

2010-08-17T22:34:09.336+08:00

I take back what I said, I had a spelling mistake (innit instead of init) in my file and now everything works!!

2010-08-14T04:09:37.265+08:00

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