GNUstep compiling Objective C: Cannot find foundation/NSObject.h File -


i have started learning how program objective c. however, struggling test programs because cannot them compile. whenever try make makefile error in shell states "test1_1.h:5:33: fatal error: foundation/nsobject.h: no such file or directory compilation terminated. have files installed on computer i'm not sure how need tell compiler find these files. here program if helps. using windows system.

test1_0.m file

#include "test1_1.h" #include <appkit/appkit.h>  int main(int argc, const char *argv[]) {  nsautoreleasepool *pool; appcontroller *delegate;  pool = [[nsautoreleasepool alloc] init]; delegate = [[appcontroller alloc] init];  [nsapplication sharedapplication]; [nsapp setdelegate: delegate];  release(pool); return nsapplicationmain (argc, argv); }

appcontroller.m file

#include "test1_1.h" #include <appkit/appkit.h>   @implementation appcontroller - (void) applicationwillfinishlaunching: (nsnotification *) not { nsmenu *menu; nsmenu *info;  menu = [nsmenu new];  [menu additemwithtitle: @"info"                     action: null                     keyequivalent: @""]; [menu additemwithtitle: @"select"                     action: null                     keyequivalent: @""]; [menu additemwithtitle: @"about"                     action: @selector(hide:)                     keyequivalent: @"h"]; [menu additemwithtitle: @"quit"                     action: @selector(terminate:)                     keyequivalent: @"q"]; info = [nsmenu new];  [info additemwithtitle: @"info panel"                     action: null                     keyequivalent: @""]; [info additemwithtitle: @"info panel"                     action: null                     keyequivalent: @""]; [info additemwithtitle: @"info panel"                     action: null                     keyequivalent: @""];  [menu setsubmeu: info     foritem: [menu itemwithtitle: @"info"]];  release(info);  [nsapp setmainmenu:menu]; release(menu);   window = [[nswindow alloc] initwithcontentrect: nsmakerect: nsmakerect(300,  300, 200, 100)                                                         stylemask:  (nstitledwindowmask | nsminiaturizablewindowmask | nsresizablewindowmask)                                                         backing:  nsbackingstorebuffered                                                         defer: yes];  [window settitle: @"hello world"];  label = [[nstextfield alloc] initwithframe: nsmakerect(30, 30, 80, 30)];  [label setselectable: no]; [label setbezeled: no]; [label setdrawsbackground: no]; [label setstringvalue: @"hello world"];  [[window contentview] addsubview: label]; release(label); }  - (void) applicationdidfinishlaunching: (nsnotification *) not { [window makekeyandorderfront: self]; }  - (void) dealloc { release(window); [super dealloc]; }  @end                                                              }

test1_1.h file

#ifndef _appcontroller_h_ #define _appcontroller_h_  #include "foundation/nsobject.h"  @class nswindow; @class nstextfield; @class nsnotification;  @interface appcontroller : nsobject { nswindow *window; nstextfield *label; }   - (void)applicationwillfinishlaunching:(nsnotification *) not; - (void)applicationdidfinishlaunching:(nsnotification *) not;  @end  #endif /* _appcontroller_h_ */

makefile

helloworld: test1_0.m appcontroller.m      gcc -o helloworld test1_0.m appcontroller.m -i c:/users/desktop/testing


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