allanjos/GNUStep_sample_build.md

## GNUStep_sample_build.md

      
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              GNUStep_sample_build.md
            
          
    Install dependencies:
sudo apt-get install gnustep
sudo apt-get install gnustep-make
sudo apt-get install gnustep-devel

Configure environment:
. /usr/share/GNUstep/Makefiles/GNUstep.sh

main.m:
#include <Foundation/Foundation.h>

@interface Greeter: NSObject
{
}

- (void)greet;

@end

#include <stdio.h>

@implementation Greeter

- (void) greet
{
    NSLog(@"Greeter!");
}

@end

int main(void)
{
    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];

    NSLog (@"GNUStep test");

    Greeter *greeter;

    greeter = [Greeter alloc];
    greeter = [greeter init];

    [greeter greet];

    [greeter release];

    [pool drain];

    return EXIT_SUCCESS;
}

Compile:
gcc `gnustep-config --objc-flags` -Wl,--no-as-needed -lgnustep-base -lobjc main.m -o main

Execute:
./main

The Makefile file:
CPPFLAGS=`gnustep-config --objc-flags` -Wl,--no-as-needed
LDFLAGS=-lgnustep-base -lobjc

main: main.m

clean:
    rm -f main *.d

Build with Makefile:
make