Difference between revisions of "GNUstep under Ubuntu Linux"

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Objective-C under Ubuntu Linux
+
Usually it is a good a idea to just use the package manager of your distribution to get a stable and well integrated GNUstep environment:
  
−
== Compiling Everything from Scratch ==
+
  sudo apt-get install gnustep gnustep-devel
  
−
The following scripts compiles and installs everything needed for Objective-C 2.0 from scratch.  The script uses clang and libobjc2 for all the awesome new features like ARC, blocks, etc.
+
If you want to develop new apps and try the newest features consider the approach described below.
  
−
Reference manuals for GNUStep, including available APIs, etc, are available at http://www.gnustep.org/developers/documentation.html
+
= Compiling Everything from Scratch  =
  
 +
The following repo contains scripts that  compile and install everything needed for GNUstep Objective-C 2.0.  The script uses clang and libobjc2 for all the awesome new features like ARC, blocks/Grand Central Dispatch, etc.
  
−
=== 16.04 & 16.10===
+
For example, to build GNUstep under Ubuntu 19.04, do:
  
−
In addition to building everything, this script also provides the ability to build the most recent version of four apps: Project Center, Gorm, GWorkspace, and System Preferences.   
+
git clone https://github.com/plaurent/gnustep-build
 +
cd gnustep-build/ubuntu-19.04-clang-8.0-runtime-2.0/
 +
  ./GNUstep-buildon-ubuntu1904.sh
  
−
<pre>
+
The demo.sh and demo-gui.sh scripts show example code and compilation examples (using command line as well as the recommended GNUmakefile approach.)
−
#!/bin/bash
 
  
−
# Show prompt function
+
Reference manuals for GNUStep, including available APIs, etc, are available at http://www.gnustep.org/developers/documentation.html
−
function showPrompt()
 
−
{
 
−
  if [ "$PROMPT" = true ] ; then
 
−
    echo -e "\n\n"
 
−
    read -p "${GREEN}Press enter to continue...${NC}"
 
−
  fi
 
−
}
 
−
 
 
−
# Set colors
 
−
GREEN=`tput setaf 2`
 
−
NC=`tput sgr0` # No Color
 
−
 
 
−
# Set to true to also build and install apps
 
−
APPS=true
 
−
 
 
−
# Set to true to pause after each build to verify successful build and installation
 
−
PROMPT=true
 
−
 
 
−
# Install Requirements
 
−
sudo apt update
 
−
 
 
−
echo -e "\n\n${GREEN}Installing dependencies...${NC}"
 
−
sudo apt -y install clang git ninja cmake libffi-dev libxml2-dev \
 
−
libgnutls28-dev libicu-dev libblocksruntime-dev libkqueue-dev libpthread-workqueue-dev autoconf libtool \
 
−
libjpeg-dev libtiff-dev libffi-dev libcairo-dev libx11-dev:i386 libxt-dev libxft-dev
 
−
 
 
−
if [ "$APPS" = true ] ; then
 
−
  sudo apt -y install curl
 
−
fi
 
−
 
 
−
# Create build directory
 
−
mkdir GNUstep-build
 
−
cd GNUstep-build
 
−
 
 
−
# Set clang as compiler
 
−
export CC=clang
 
−
export CXX=clang++
 
−
 
 
−
# Checkout sources
 
−
echo -e "\n\n${GREEN}Checking out sources...${NC}"
 
−
git clone https://github.com/nickhutchinson/libdispatch.git
 
−
git clone https://github.com/gnustep/libobjc2.git
 
−
git clone https://github.com/gnustep/tools-make.git
 
−
git clone https://github.com/gnustep/libs-base.git
 
−
git clone https://github.com/gnustep/libs-gui.git
 
−
git clone https://github.com/gnustep/libs-back.git
 
−
 
 
−
if [ "$APPS" = true ] ; then
 
−
  git clone https://github.com/gnustep/apps-projectcenter.git
 
−
  git clone https://github.com/gnustep/apps-gorm.git
 
−
  git clone https://github.com/gnustep/apps-gworkspace.git
 
−
  git clone https://github.com/gnustep/apps-systempreferences.git
 
−
fi
 
−
 
 
−
showPrompt
 
−
 
 
−
# Build GNUstep make first time
 
−
echo -e "\n\n"
 
−
echo -e "${GREEN}Building GNUstep-make for the first time...${NC}"
 
−
cd tools-make
 
−
./configure --enable-debug-by-default --with-layout=gnustep --enable-objc-nonfragile-abi --enable-objc-arc
 
−
make -j8
 
−
sudo -E make install
 
−
 
 
−
. /usr/GNUstep/System/Library/Makefiles/GNUstep.sh
 
−
echo ". /usr/GNUstep/System/Library/Makefiles/GNUstep.sh" >> ~/.bashrc
 
−
 
 
−
showPrompt
 
−
 
 
−
# Build libdispatch
 
−
echo -e "\n\n"
 
−
echo -e "${GREEN}Building libdispatch...${NC}"
 
−
cd ../libdispatch
 
−
rm -Rf build
 
−
mkdir build && cd build
 
−
../configure  --prefix=/usr
 
−
make
 
−
sudo make install
 
−
sudo ldconfig
 
−
 
 
−
showPrompt
 
−
 
 
−
# Build libobjc2
 
−
echo -e "\n\n"
 
−
echo -e "${GREEN}Building libobjc2...${NC}"
 
−
cd ../../libobjc2
 
−
rm -Rf build
 
−
mkdir build && cd build
 
−
cmake ../ -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang -DCMAKE_ASM_COMPILER=clang -DTESTS=OFF
 
−
cmake --build .
 
−
sudo -E make install
 
−
sudo ldconfig
 
−
 
 
−
export LDFLAGS=-ldispatch
 
−
 
 
−
showPrompt
 
−
 
 
−
OBJCFLAGS="-fblocks -fobjc-runtime=gnustep-1.8.1"
 
−
 
 
−
# Build GNUstep make second time
 
−
echo -e "\n\n"
 
−
echo -e "${GREEN}Building GNUstep-make for the second time...${NC}"
 
−
cd ../../tools-make
 
−
./configure --enable-debug-by-default --with-layout=gnustep --enable-objc-nonfragile-abi --enable-objc-arc
 
−
make -j8
 
−
sudo -E make install
 
−
 
 
−
. /usr/GNUstep/System/Library/Makefiles/GNUstep.sh
 
−
 
 
−
showPrompt
 
−
 
 
−
# Build GNUstep base
 
−
echo -e "\n\n"
 
−
echo -e "${GREEN}Building GNUstep-base...${NC}"
 
−
cd ../libs-base/
 
−
./configure
 
−
make -j8
 
−
sudo -E make install
 
−
 
 
−
showPrompt
 
−
 
 
−
# Build GNUstep GUI
 
−
echo -e "\n\n"
 
−
echo -e "${GREEN} Building GNUstep-gui...${NC}"
 
−
cd ../libs-gui
 
−
./configure
 
−
make -j8
 
−
sudo -E make install
 
−
 
 
−
showPrompt
 
−
 
 
−
# Build GNUstep back
 
−
echo -e "\n\n"
 
−
echo -e "${GREEN}Building GNUstep-back...${NC}"
 
−
cd ../libs-back
 
−
./configure
 
−
make -j8
 
−
sudo -E make install
 
−
 
 
−
showPrompt
 
−
 
 
−
. /usr/GNUstep/System/Library/Makefiles/GNUstep.sh
 
−
 
 
−
if [ "$APPS" = true ] ; then
 
−
  echo -e "${GREEN}Building ProjectCenter...${NC}"
 
−
  cd ../apps-projectcenter/
 
−
  make -j8
 
−
  sudo -E make install
 
−
 
 
−
  showPrompt
 
−
 
 
−
  echo -e "${GREEN}Building Gorm...${NC}"
 
−
  cd ../apps-gorm/
 
−
  make -j8
 
−
  sudo -E make install
 
−
 
 
−
  showPrompt
 
−
 
 
−
  echo -e "\n\n"
 
−
  echo -e "${GREEN}Building GWorkspace...${NC}"
 
−
  cd ../apps-gworkspace/
 
−
  ./configure
 
−
  make -j8
 
−
  sudo -E make install
 
−
 
 
−
  showPrompt
 
−
 
 
−
  echo -e "\n\n"
 
−
  echo -e "${GREEN}Building SystemPreferences...${NC}"
 
−
  cd ../apps-systempreferences/
 
−
  make -j8
 
−
  sudo -E make install
 
−
 
 
−
fi
 
−
 
 
−
echo -e "\n\n"
 
−
echo -e "${GREEN}Install is done. Open a new terminal to start using.${NC}"
 
−
</pre>
 
−
 
 
−
=== 14.04 & 15.04 ===
 
−
 
 
−
<pre>
 
−
#!/bin/bash
 
−
 
 
−
sudo dpkg --add-architecture i386
 
−
sudo apt-get update
 
−
sudo apt-get -y install build-essential git subversion ninja cmake libffi-dev libxml2-dev \
 
−
libgnutls-dev libicu-dev libblocksruntime-dev libkqueue-dev libpthread-workqueue-dev autoconf libtool \
 
−
libjpeg-dev libtiff-dev libffi-dev libcairo-dev libx11-dev:i386 libxt-dev libXft-dev
 
−
 
 
−
sudo apt-get -y install python-dev libncurses5-dev doxygen swig libedit-dev
 
−
 
 
−
 
 
−
cd ~
 
−
git clone git://github.com/nickhutchinson/libdispatch.git
 
−
svn co http://svn.gna.org/svn/gnustep/modules/core
 
−
git clone https://github.com/gnustep/libobjc2
 
−
 
 
−
# OBTAIN, COMPILE, INSTALL THE LATEST LLVM/clang. (Doing apt-get install clang instead may or may not work.)
 
−
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
 
−
svn co http://llvm.org/svn/llvm-project/lldb/trunk lldb
 
−
cd ~/llvm
 
−
rm -rf build
 
−
mkdir build
 
−
cd build
 
−
cmake -D CMAKE_BUILD_TYPE:STRING=Release ..    # If you don't choose Release, it defaults to Debug which takes lots more space
 
−
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
 
−
export PATH=$PATH:~/llvm/build/bin
 
−
. ~/.bashrc
 
−
 
 
−
export CC=clang
 
−
export CXX=clang++
 
−
 
 
−
clang -v
 
−
clang++ -v
 
−
 
 
−
cd ~/libobjc2
 
−
rm -rf build
 
−
mkdir build
 
−
cd build
 
−
cmake ..
 
−
make -j8
 
−
sudo -E make install
 
−
 
 
−
cd ~/core/make
 
−
./configure --enable-debug-by-default --with-layout=gnustep --enable-objc-nonfragile-abi
 
−
make && sudo -E make install
 
−
echo ". /usr/GNUstep/System/Library/Makefiles/GNUstep.sh" >> ~/.bashrc
 
−
 
 
−
. /usr/GNUstep/System/Library/Makefiles/GNUstep.sh
 
−
 
 
−
sudo /sbin/ldconfig
 
−
 
 
−
cd ~/core/base/
 
−
./configure
 
−
make -j8
 
−
sudo -E make install
 
−
 
 
−
cd ~/libdispatch
 
−
rm -rf libdispatch-build
 
−
mkdir libdispatch-build && cd libdispatch-build
 
−
../configure
 
−
make
 
−
sudo make install
 
−
sudo ldconfig
 
−
 
 
−
cd ~/core/gui
 
−
./configure
 
−
make -j8
 
−
sudo -E make install
 
−
 
 
−
cd ~/core/back
 
−
./configure
 
−
make -j8
 
−
sudo -E make install
 
−
 
 
−
echo "Install is done. Open a new terminal or type source ~/.bashrc"
 
−
</pre>
 
−
 
 
−
 
 
−
=== 12.04 ===
 
−
 
 
−
This uses the same as the 14.04 & 15.04 except there are some additional requirements.
 
−
 
 
−
On Ubuntu 12.04, the default installed version of CMake is 2.8.7 but you need 2.8.8 or later to compile LLVM.  And the default installed version of GCC and G++ is 4.6 but you need 4.8 or later to compile LLVM.
 
−
 
 
−
For CMake, the solution is to download and compile CMake yourself.  Use the existing CMake 2.8.7 and then replace it:
 
−
 
 
−
# Download the latest CMake version from the CMake web site (http://www.cmake.org/cmake/resources/software.html), and uncompress it in a folder.
 
−
# Create a _build directory in the CMake sources folder.
 
−
# From the _build directory, run the following commands to build and install CMake from sources:
 
−
 
 
−
<pre>
 
−
cmake .. -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr
 
−
make
 
−
cpack -G DEB
 
−
sudo apt-get remove cmake cmake-data
 
−
sudo dpkg -i cmake*.deb
 
−
</pre>
 
−
 
 
−
To get GCC and G++ 4.8, do the following:
 
−
 
 
−
<pre>
 
−
sudo add-apt-repository ppa:ubuntu-toolchain-r/test
 
−
sudo apt-get update
 
−
sudo apt-get install gcc-4.8 g++-4.8
 
−
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.8 50
 
−
sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.8 50
 
−
</pre>
 
−
 
 
−
Now run the 14.04 & 15.04 script.
 
−
 
 
−
 
 
−
== Test Code ==
 
−
 
 
−
The following is some Objective-C source code from the internet. 
 
−
It demonstrates blocks, Grand Central Dispatch, and the use of GNUStep GUI.
 
−
 
 
−
<pre>
 
−
 
 
−
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
 
−
 
 
−
 
 
−
 
 
−
cat > guitest.m << EOF
 
−
#import <AppKit/AppKit.h>
 
−
 
 
−
int main()
 
−
{
 
−
  NSApplication *app;  // Without these 2 lines, seg fault may occur
 
−
  app = [NSApplication sharedApplication];
 
−
 
 
−
  NSAlert * alert = [[NSAlert alloc] init];
 
−
  [alert setMessageText:@"Hello alert"];
 
−
  [alert addButtonWithTitle:@"All done"];
 
−
  int result = [alert runModal];
 
−
  if (result == NSAlertFirstButtonReturn) {
 
−
    NSLog(@"First button pressed");
 
−
  }
 
−
}
 
−
EOF
 
−
 
 
−
# ======================================================================
 
−
# COMPILE USING THE FOLLOWING COMMAND LINES, OR CREATE A MAKEFILE
 
−
# ======================================================================
 
−
 
 
−
# Using COMMAND LINE
 
−
 
 
−
clang `gnustep-config --objc-flags` `gnustep-config --objc-libs` -fobjc-runtime=gnustep -fblocks -fobjc-arc -lobjc  blocktest.m
 
−
 
 
−
clang `gnustep-config --objc-flags` `gnustep-config --objc-libs` -fobjc-runtime=gnustep -fblocks -lobjc -ldispatch -lgnustep-base  Fraction.m helloGCD_objc.m
 
−
 
 
−
clang `gnustep-config --objc-flags` `gnustep-config --objc-libs`  -fobjc-runtime=gnustep -fblocks -lobjc -fobjc-arc -ldispatch -lgnustep-base -lgnustep-gui  guitest.m
 
−
 
 
−
# Using MAKEFILE
 
−
 
 
−
cat > GNUmakefile << EOF
 
−
include \$(GNUSTEP_MAKEFILES)/common.make
 
−
 
 
−
APP_NAME = GUITest
 
−
GUITest_OBJC_FILES = guitest.m
 
−
 
 
−
include \$(GNUSTEP_MAKEFILES)/application.make
 
−
EOF
 
−
 
 
−
make
 
−
openapp ./GUITest.app
 
−
 
 
−
 
 
−
 
 
−
</pre>
 
  
−
General Note: When compiling your own code, it is generally good to tell clang both the family and version of the runtime: -fobjc-runtime=gnustep-1.8.1
+
General Note: When compiling your own code, it is generally good to tell clang both the family and version of the runtime: -fobjc-runtime=gnustep-2.0
 
(The current version number can be had by looking at the latest ANNOUNCE filename in https://github.com/gnustep/libobjc2 (e.g., ANNOUNCE.1.8.1))
 
(The current version number can be had by looking at the latest ANNOUNCE filename in https://github.com/gnustep/libobjc2 (e.g., ANNOUNCE.1.8.1))

Latest revision as of 21:05, 17 April 2022

Usually it is a good a idea to just use the package manager of your distribution to get a stable and well integrated GNUstep environment: 

sudo apt-get install gnustep gnustep-devel

If you want to develop new apps and try the newest features consider the approach described below.

Compiling Everything from Scratch

The following repo contains scripts that compile and install everything needed for GNUstep Objective-C 2.0. The script uses clang and libobjc2 for all the awesome new features like ARC, blocks/Grand Central Dispatch, etc.

For example, to build GNUstep under Ubuntu 19.04, do: 

git clone https://github.com/plaurent/gnustep-build
cd gnustep-build/ubuntu-19.04-clang-8.0-runtime-2.0/
./GNUstep-buildon-ubuntu1904.sh

The demo.sh and demo-gui.sh scripts show example code and compilation examples (using command line as well as the recommended GNUmakefile approach.)

Reference manuals for GNUStep, including available APIs, etc, are available at http://www.gnustep.org/developers/documentation.html

General Note: When compiling your own code, it is generally good to tell clang both the family and version of the runtime: -fobjc-runtime=gnustep-2.0 (The current version number can be had by looking at the latest ANNOUNCE filename in https://github.com/gnustep/libobjc2 (e.g., ANNOUNCE.1.8.1))

Retrieved from "https://mediawiki.gnustep.org/index.php?title=GNUstep_under_Ubuntu_Linux&oldid=7300"