Here are the updated complete instructions (I added libdispatch as well). I have updated the wiki as well, at:
# Objective C 2.0 on a fresh install of Ubuntu 12.10 Server
# Patryk Laurent (http://pakl.net/)
# Dec 28, 2012
# Dependencies
sudo aptitude install build-essential git subversion ninja cmake
# Dependencies for GNUStep Base
sudo aptitude install libffi-dev libxml2-dev libgnutls-dev libicu-dev
# Dependencies for libdispatch
sudo aptitude install libblocksruntime-dev libkqueue-dev libpthread-workqueue-dev autoconf libtool
cd ~
git clone git://github.com/nickhutchinson/libdispatch.git
svn co http://svn.gna.org/svn/gnustep/modules/core
svn co http://svn.gna.org/svn/gnustep/libs/libobjc2/trunk libobjc2
svn co http://llvm.org/svn/llvm-project/llvm/trunk llvm
cd llvm/tools
svn co http://llvm.org/svn/llvm-project/cfe/trunk clang
cd ~/llvm
mkdir build
cd build
cmake ..
make -j8 # 8=your number of build CPUs
echo "export PATH=\$PATH:~/llvm/build/bin" >> ~/.bashrc
echo "export CC=clang" >> ~/.bashrc
echo "export CXX=clang++" >> ~/.bashrc
source ~/.bashrc
clang -v
clang++ -v
cd ~/libobjc2
mkdir build
cd build
cmake ..
make -j8
sudo -E make install
cd ~/core/make
./configure --enable-debug-by-default --with-layout=gnustep
make && sudo -E make install
echo ". /usr/GNUstep/System/Library/Makefiles/GNUstep.sh" >> ~/.bashrc
source ~/.bashrc
cd ~/core/base/
./configure
make -j8
sudo -E make install
cd ~/libdispatch
sh autogen.sh
./configure CFLAGS="-I/usr/include/kqueue" LDFLAGS="-lkqueue -lpthread_workqueue -pthread -lm"
make -j8
sudo -E make install
sudo ldconfig
# ----------------------------------------------------------------------------------------
# TEST COMPILING SOME CODE FROM THE INTERNET
# ----------------------------------------------------------------------------------------
You can compile the following code with:
clang `gnustep-config --objc-flags` `gnustep-config --objc-libs` -fobj-arc -fobjc-runtime=gnustep -fblocks -lobjc blocktest.m
clang `gnustep-config --objc-flags` `gnustep-config --objc-libs` -fobj-arc -fobjc-runtime=gnustep -fblocks -lobjc -ldispatch -lgnustep-base Fraction.m helloGCD_objc.m
cat > blocktest.m << EOF
#include <stdio.h>
int main() {
void (^hello)(void) = ^(void) {
printf("Hello, block!\n");
};
hello();
return 0;
}
EOF
cat > helloGCD_objc.m << EOF
#include <dispatch/dispatch.h>
#import <stdio.h>
#import "Fraction.h"
int main( int argc, const char *argv[] ) {
dispatch_queue_t queue = dispatch_queue_create(NULL, NULL);
Fraction *frac = [[Fraction alloc] init];
[frac setNumerator: 1];
[frac setDenominator: 3];
// print it
dispatch_sync(queue, ^{
printf( "The fraction is: " );
[frac print];
printf( "\n" );
});
dispatch_release(queue);
return 0;
}
EOF
cat > Fraction.h << EOF
#import <Foundation/NSObject.h>
@interface Fraction: NSObject {
int numerator;
int denominator;
}
-(void) print;
-(void) setNumerator: (int) n;
-(void) setDenominator: (int) d;
-(int) numerator;
-(int) denominator;
@end
EOF
cat > Fraction.m << EOF
#import "Fraction.h"
#import <stdio.h>
@implementation Fraction
-(void) print {
printf( "%i/%i", numerator, denominator );
}
-(void) setNumerator: (int) n {
numerator = n;
}
-(void) setDenominator: (int) d {
denominator = d;
}
-(int) denominator {
return denominator;
}
-(int) numerator {
return numerator;
}
@end
EOF