Objective-C Now it's almost Apple's patent , It can be directly in Apple's Xcode Compiled on Objective-C Program , But in Windows There are very few compiler tools under the platform , Not many people use this language . I saw someone posting on the Internet today , Can be in Windows Compiling under the platform Objective-C, I tried with curiosity . little does one think , It's a success , Now how to build Objective-C I'd like to share my experience with you .

1、 install GNUstep
GNUstep Windows Installer Provides Windows Under the platform Object-C Simulation development environment for , There are four packages , among GNUstep System and GNUstep Core It's a must ,GNUstep Devel and Cairo Backend It's optional . Just install the first two .

2、 To write Objective-C Code
After installation , In the start menu GNUstep In the options shell, You can open the command line . Directly in Windows I'm going into C:/GNUstep/home/Administrator( My is Administrator, There may be some differences ) Catalog , Use your favorite tool here ( Now? UltraEdit and Notepad++ The editor seems to be able to highlight the code ) To write Object-C Program .
Such as :HelloWorld.m

#import <Foundation/Foundation.h>
 int main (int argc, const char *argv[]) {
    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
    NSLog(@"Hello World!");
    [pool drain];

return 0;

3、 Configure environment variables
This is an important step .GNUstep.sh It's used to set up GNUstep Development environment variables , If not implemented , There will be a lot of header files , The library files , Command not found

After writing the source code in a directory , Write a make The configuration file , The name must be GNUmakefile, The content is

include $(GNUSTEP_MAKEFILES)/common.make


include $(GNUSTEP_MAKEFILES)/tool.make

You can change the bold part above

Then is

If the command runs successfully, you can see a new one obj Catalog , There are executable files and .o file .

OK done .

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