3
錯誤我新的目標C,並具有以下錯誤試圖通過我Objective-C的連接具有重複符號錯誤
Building target 「MusicCube」 of project 「MusicCube」 with configuration 「Debug」 — (1 error) cd /Users/varsha_vijay/Downloads/MusicCube setenv MACOSX_DEPLOYMENT_TARGET 10.5 setenv PATH "/Xcode3.1.4/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Xcode3.1.4/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin" /Xcode3.1.4/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc-4.2 -arch i386 -isysroot /Xcode3.1.4/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator3.1.sdk -L/Users/varsha_vijay/Downloads/MusicCube/build/Debug-iphonesimulator -F/Users/varsha_vijay/Downloads/MusicCube/build/Debug-iphonesimulator -filelist /Users/varsha_vijay/Downloads/MusicCube/build/MusicCube.build/Debug-iphonesimulator/MusicCube.build/Objects-normal/i386/MusicCube.LinkFileList -mmacosx-version-min=10.5 -framework Foundation -framework UIKit -framework OpenGLES -framework QuartzCore -framework AudioToolbox -framework CoreGraphics -framework OpenAL -o /Users/varsha_vijay/Downloads/MusicCube/build/Debug-iphonesimulator/MusicCube.app/MusicCube ld: duplicate symbol _num_flight_vertices in /Users/varsha_vijay/Downloads/MusicCube/build/MusicCube.build/Debug-iphonesimulator/MusicCube.build/Objects-normal/i386/Flight.o and /Users/varsha_vijay/Downloads/MusicCube/build/MusicCube.build/Debug-iphonesimulator/MusicCube.build/Objects-normal/i386/EAGLView.o collect2: ld returned 1 exit status ld: duplicate symbol _num_flight_vertices in /Users/varsha_vijay/Downloads/MusicCube/build/MusicCube.build/Debug-iphonesimulator/MusicCube.build/Objects-normal/i386/Flight.o and /Users/varsha_vijay/Downloads/MusicCube/build/MusicCube.build/Debug-iphonesimulator/MusicCube.build/Objects-normal/i386/EAGLView.o collect2: ld returned 1 exit status Build failed (1 error)
導入定義一個類時,這裏是我的程序的組織方式。
1.我在Flight.h類中定義的C頭文件vertices.h
#ifndef VERTICES_H
#define VERTICES_H
const int num_flight_vertices = 8;
#endif
2.我導入這個頭文件
#import "vertices.h"
@interface Flight : NSObject {
3.我導入此航班。 h文件在我的EAGLView.h類
#import "vertices.h"
@interface EAGLView : UIView {
@private
Flight *flight;
當我建立這個,我得到的錯誤。
有人可以幫助我這個。
感謝, VJ
既然你聲明它是extern,那麼就不需要#ifndef保護。 「extern」的意思是「我會在別的地方給它一個價值。」你可以儘可能地做到這一點。在ObjC中,由於無論如何都使用#import,因此通常不需要#ifndef保護。 – 2010-06-20 03:19:42