Re: Building fun again

[Thomas Davie]

Heya,

I've got a bit further with this, by specifying LIBS="-ldispatch -lobjc" and LDFLAGS="-L/usr/GNUstep/Local/Library/Libraries", configure now succeeds!  Unfortunately, make is not so successful.  Linking additions fails, it appears clang isn't getting any linker flags passed in when it links:

make messages=yes reports that this command is being invoked:

clang -nostdlib -r        -shared-libgcc -fexceptions -o ./obj/subproject.o obj/Additions.obj/GSObjCRuntime.m.o obj/Additions.obj/GCObject.m.o obj/Additions.obj/GCArray.m.o obj/Additions.obj/GCDictionary.m.o ob

j/Additions.obj/GSLock.m.o obj/Additions.obj/GSMime.m.o obj/Additions.obj/GSXML.m.o obj/Additions.obj/GSFunctions.m.o obj/Additions.obj/GSInsensitiveDictionary.m.o obj/Additions.obj/NSArray+GNUstepBase.m.o obj/

Additions.obj/NSAttributedString+GNUstepBase.m.o obj/Additions.obj/NSBundle+GNUstepBase.m.o obj/Additions.obj/NSCalendarDate+GNUstepBase.m.o obj/Additions.obj/NSData+GNUstepBase.m.o obj/Additions.obj/NSDebug+GN

UstepBase.m.o obj/Additions.obj/NSError+GNUstepBase.m.o obj/Additions.obj/NSFileHandle+GNUstepBase.m.o obj/Additions.obj/NSLock+GNUstepBase.m.o obj/Additions.obj/NSMutableString+GNUstepBase.m.o obj/Additions.ob

j/NSNumber+GNUstepBase.m.o obj/Additions.obj/NSObject+GNUstepBase.m.o obj/Additions.obj/NSPropertyList+GNUstepBase.m.o obj/Additions.obj/NSProcessInfo+GNUstepBase.m.o obj/Additions.obj/NSStream+GNUstepBase.m.o 

obj/Additions.obj/NSString+GNUstepBase.m.o obj/Additions.obj/NSTask+GNUstepBase.m.o obj/Additions.obj/NSThread+GNUstepBase.m.o obj/Additions.obj/NSURL+GNUstepBase.m.o obj/Additions.obj/Unicode.m.o ;

This then promptly produces missing symbols for basically everything, because it's not getting told to link in libobjc, or even the standard C libraries.

Anyone got any ideas how to get this a bit further?

Thanks

Tom Davie

On 6 Jan 2012, at 13:50, Thomas Davie wrote:

Hey all,

I just updated my ubuntu box to allow me to use libdispatch, unfortunately, that killed my GNUstep install in the process, so I'm in the process of rebuilding.

I have a new clang from svn, built and tested to be working on C files.

I have built gnustep-make successfully with CC=gcc set.

I have built gnustep-base successfully with CC=gcc set.

I have built libobjc2 successfully with CC=clang set.

I have reconfigured and built gnustep-make successfully with CC=clang set.

gnustep-base will not reconfigure though, complaining that clang will not produce working binaries from objc files, some experimentation says it clearly will:

./configure --enable-libffi --with-library-flags="-L/usr/GNUstep/Local/Library/Libraries -ldispatch -lobjc" --with-default-config=/usr/GNUstep/Local/Configuration/GNUstep.conf

.....

checking whether objc really works... no

I don't seem to be able to use your Objective-C compiler to produce

working binaries!  Please check your Objective-C compiler installation.

If you are using gcc-3.x make sure that your compiler's libgcc_s and libobjc

can be found by the dynamic linker - usually that requires you to play

with LD_LIBRARY_PATH or /etc/ld.so.conf.

Please refer to your compiler installation instructions for more help.

configure: error: The Objective-C compiler does not work or is not installed properly.

tatd2@GLaDOS:~/gnustep-base$ cd ..

tatd2@GLaDOS:~$ clang -L/usr/GNUstep/Local/Library/Libraries -lobjc -ldispatch  test.m

tatd2@GLaDOS:~$ ./a.out 

Hello World

tatd2@GLaDOS:~$ cat test.m

#include <stdlib.h>

#include <stdio.h>

@interface A

+ (void)a;

@end

@implementation A

+ (void)a

{

    printf("Hello World\n");

}

@end

int main (int argc, char **argv)

{

  [A a];

}

Is there anything I can do to debug why this check seems to be failing?

if (*ra4 != 0xffc78948) { return false; }

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