GNUstep under Ubuntu Linux

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# ----------------------------------------------------------------- # Objective C 2.0 on Ubuntu (from source) # ----------------------------------------------------------------- # PART 1: LIBOBJC2 from source (with ARC) # PART 2: LIBDISPATCH from source # ON UBUNTU 12.04 SERVER # ----------------------------------------------------------------- # Step 1 based on David Chisnall (http://etoileos.com/news/archive/2011/08/14/1206/) # Step 2 based on Chris Mowforth http://chris.mowforth.com/installing-grand-central-dispatch-on-linux) # ----------------------------------------------------------------- # ----------------------------------------------------------------- # ============================== # ============================== # PART 1: new libobjc2 on Ubuntu # ============================== # ============================== # -------------------------------------------------------------------- # Some examples to test Objective C and ARC once we get it installed # -------------------------------------------------------------------- cd ~ 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 cat > main.m << EOF #import <stdio.h> #import "Fraction.h" int main( int argc, const char *argv[] ) { // create a new instance Fraction *frac = [[Fraction alloc] init]; // set the values [frac setNumerator: 1]; [frac setDenominator: 3]; // print it printf( "The fraction is: " ); [frac print]; printf( "\n" ); // free memory [frac release]; return 0; } EOF cat > mainarc.m << EOF #import <stdio.h> #import "Fraction.h" int main( int argc, const char *argv[] ) { // create a new instance Fraction *frac = [[Fraction alloc] init]; // set the values [frac setNumerator: 1]; [frac setDenominator: 3]; // print it printf( "The fraction is: " ); [frac print]; printf( "\n" ); // free memory // [frac release]; // valgrind should show less leakage with -fobjc-arc return 0; } EOF # ----------------------------------------------------------------- # INITIAL REQUIREMENTS # ----------------------------------------------------------------- sudo apt-get -y install build-essential subversion clang libicu-dev libxml2-dev libxml2 libgnutls-dev libssl-dev #sudo apt-get -y install gnustep # If you want old runtime #sudo apt-get -y install gnustep-make #sudo apt-get -y install libgnustep-base-dev sudo apt-get -y install gobjc # Def required for below. # -------------------------------------------------------------------- # TEST (may fail w/ segfault if you did not apt-get install gnustep) # -------------------------------------------------------------------- cd ~ gcc `gnustep-config --objc-flags` main.m Fraction.m -o test -lobjc -lgnustep-base ./test clang `gnustep-config --objc-flags` main.m Fraction.m -o test -lobjc -lgnustep-base ./test # -------------------------------------------------------------------- # OK, let's install the new GNUstep from Subversion repositories! # (based on David Chisnall http://etoileos.com/news/archive/2011/08/14/1206/) # -------------------------------------------------------------------- mkdir gs cd gs svn co svn://svn.gna.org/svn/gnustep/tools/make/trunk make svn co http://svn.gna.org/svn/gnustep/modules/core svn co svn://svn.gna.org/svn/gnustep/libs/libobjc2/trunk libobjc # -------------------------------------------------------------------- # 1) Install GNUstep Make a first time. # -------------------------------------------------------------------- cd ~/gs/make export CC=clang export CXX=clang++ ./configure --enable-debug-by-default --with-layout=fhs make && sudo -E make install . /usr/local/share/GNUstep/Makefiles/GNUstep.sh cd .. cd ~/gs/core/base ./configure make # On this FIRST TIME THRU, WILL SAY CAN'T BUILD NSBLOCKS for this runtime sudo make install cd .. # -------------------------------------------------------------------- # TEST (the resulting binary will segfault if we don't have a runtime) # -------------------------------------------------------------------- cd ~ clang `gnustep-config --objc-flags` main.m Fraction.m -o test -lobjc -lgnustep-base # -------------------------------------------------------------------- # 2) Build libobjc2 # -------------------------------------------------------------------- cd ~/gs/libobjc make -f Makefile sudo make -f Makefile install cd .. # -------------------------------------------------------------------- # 3) NOW GO BACK, RECOMPILE GNUStep MAKE (TO DETECT THE NEW OBJC RUNTIME) # -------------------------------------------------------------------- cd ~/gs/make ./configure --enable-objc-nonfragile-abi --enable-native-objc-exceptions --with-layout=fhs --enable-debug-by-default CC=clang CXX=clang++ make && sudo -E make install . /usr/local/share/GNUstep/Makefiles/GNUstep.sh cd .. # -------------------------------------------------------------------- # 4) AND THEN RECOMPILE CORE/BASE # -------------------------------------------------------------------- cd ~/core/base ./configure --disable-mixedabi CC=clang CXX=clang++ make # THIS TIME THRU, NO COMPLAINTS ABOUT BLOCKS sudo make install cd .. # -------------------------------------------------------------------- # 5) FINALLY TEST AGAIN AND ENJOY OBJECTIVE C WITH ARC # Note that I need to add GNUSTEP-CONFIG --OBJC-LIBS below. # If you don't want ARC, omit -fobj-arc # -------------------------------------------------------------------- cd ~ clang `gnustep-config --objc-flags` `gnustep-config --objc-libs` -fobj-arc -fobjc-nonfragile-abi mainarc.m Fraction.m -o test -lobjc -lgnustep-base ./test # ============================== # ============================== # PART 2: libdispatch on Ubuntu # ============================== # ============================== # -------------------------------------------------------------------- # Some examples to test GCD once we get it installed # -------------------------------------------------------------------- cd ~ cat > helloGCD.c << EOF #include <dispatch/dispatch.h> #include <stdio.h> int main() { dispatch_queue_t queue = dispatch_queue_create(NULL, NULL); dispatch_sync(queue, ^{ printf("Hello, world from a dispatch queue!\n"); }); dispatch_release(queue); return 0; } EOF cat > helloGCD_objc.c << 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 # -------------------------------------------------------------------- # INSTALLING LIBDISPATCH # (based on Chris Mowforth http://chris.mowforth.com/installing-grand-central-dispatch-on-linux) # -------------------------------------------------------------------- sudo apt-get install clang libblocksruntime-dev libkqueue-dev # Visit http://packages.ubuntu.com/oneiric/libpthread-workqueue0 for download links # Visit http://packages.ubuntu.com/oneiric/libpthread-workqueue-dev for download link mkdir dispatch cd dispatch sudo apt-get install make autoconf autogen libtool build-essential gcc-multilib sudo apt-get install pkg-config wget http://mirror.pnl.gov/ubuntu//pool/universe/libp/libpthread-workqueue/libpthread-workqueue0_0.8.2-1_amd64.deb wget http://mirror.pnl.gov/ubuntu//pool/universe/libp/libpthread-workqueue/libpthread-workqueue-dev_0.8.2-1_amd64.deb sudo dpkg -i libpthread-workqueue0_0.8.2-1_amd64.deb sudo dpkg -i libpthread-workqueue-dev_0.8.2-1_amd64.deb wget http://archive.ubuntu.com/ubuntu/pool/universe/libd/libdispatch/libdispatch_0~svn197.orig.tar.gz tar xvfz libdispatch_0~svn197.orig.tar.gz cd libdispatch-0~svn197/ export CC=clang export CXX=clang++ make distclean ./configure make # dispatch_starfish.o: In function `_dispatch_time_mach2nano': # dispatch_starfish.c:(.text+0x5bc): undefined reference to `_dispatch_host_time_data' # dispatch_starfish.c:(.text+0x5ea): undefined reference to `_dispatch_get_host_time_init' # /usr/bin/ld: .libs/dispatch_starfish: hidden symbol `_dispatch_host_time_data' isn't defined # /usr/bin/ld: final link failed: Bad value # clang: error: linker command failed with exit code 1 (use -v to see invocation) # make[1]: *** [dispatch_starfish] Error 1 # make[1]: Leaving directory `/home/patryk/dispatch/libdispatch-0~svn197/testing' # make: *** [all-recursive] Error 1 # -------------------------------------------------------------------- # To fix compile, comment out build of "testing" from Makefile # -------------------------------------------------------------------- make clean sed "s/testing/#testing/" Makefile > Makefile.new mv Makefile.new Makefile make sudo make install sudo ldconfig # -------------------------------------------------------------------- # Testing # -------------------------------------------------------------------- # Plain C: When not compiling with libobjc2 (just plain C) on Ubuntu you must add -lBlocksRuntime # -------------------------------------------------------------------- clang -o hi helloGCD.c -fblocks -ldispatch -lBlocksRuntime ./hi clang -o hi helloGCD.c -fblocks -ldispatch # /usr/bin/ld: /tmp/helloGCD-eXxFYY.o: undefined reference to symbol '_NSConcreteGlobalBlock' # /usr/bin/ld: note: '_NSConcreteGlobalBlock' is defined in DSO /usr/lib/libBlocksRuntime.so.0 # so try adding it to the linker command line # /usr/lib/libBlocksRuntime.so.0: could not read symbols: Invalid operation # clang: error: linker command failed with exit code 1 (use -v to see invocation) # -------------------------------------------------------------------- # Compiling Objective C with ARC and blocks and libdispatch # -------------------------------------------------------------------- # Note: do not use -lBlocksRuntime here since Apple on is not # compatible with the libobjc2 one which has its own. (Note from # David Chisnall) # -------------------------------------------------------------------- clang `gnustep-config --objc-flags` `gnustep-config --objc-libs` -fobj-arc -fobjc-nonfragile-abi -fblocks helloGCD_objc.m Fraction.m -o test -lobjc -lgnustep-base -ldispatch ./test

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