My GNUstep installation is in c:\GNUstep\GNUstep\System. If yours is different, you should change the import of Foundation.h accordingly.
I did this:
- Create c:\myprogs\obj-c\hello\hello.m that looks like this:
//---------- Hello.m
#import <../../GNUstep/System/Library/Headers/Foundation/Foundation.h>
int main(int argc, const char* argv[])
{
NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
NSLog(@"Hello from Hello.m!");
[pool release];
return 0;
}
//----------
Start MinGW shell. (See above.)
On shell command line, change to directory where program code is located. (Note that, since this is not Unix, the Windows drive letter must be included.):
cd /c/myprogs/obj-c/hello
Compile the program:
gcc -o hello hello.m -I/c/GNUstep/GNUstep/System/Library/Headers \
-L /c/GNUstep/GNUstep/System/Library/Libraries -lobjc -lgnustep-base \
-fconstant-string-class=NSConstantString
(Note that "\" character allows us to extend command to multiple lines.)
I get the following informational messages when I compile:
Info: resolving ___objc_class_name_NSAutoreleasePool by linking to __imp____objc_class_name_NSAutoreleasePool (auto-import)
Info: resolving ___objc_class_name_NSConstantString by linking to __imp____objc_class_name_NSConstantString (auto-import)
Running resulting hello.exe gives me this:
2009-06-03 14:44:59.483 hello[1240] Hello from Hello.m!
