这个编译错误好奇怪

graydream

1. 3 -mieee-fp -Wall -Wstrict-prototypes -O3 -mieee-fp  -D_SVID_SOURCE -D_BSD_SOURCE -DSHM  -c grskidmarks.cpp
   
2. c++ -I/var/tmp/portage/torcs-1.2.2/work/torcs-1.2.2/export/include  -O3 -march=pentium4 -pipe -fomit-frame-pointer -Wall -Wstrict-prototypes -O3 -mieee-fp -Wall -Wstrict-prototypes -O3 -mieee-fp  -D_SVID_SOURCE -D_BSD_SOURCE -DSHM  -c grloadac.cpp
   
3. c++ -I/var/tmp/portage/torcs-1.2.2/work/torcs-1.2.2/export/include  -O3 -march=pentium4 -pipe -fomit-frame-pointer -Wall -Wstrict-prototypes -O3 -mieee-fp -Wall -Wstrict-prototypes -O3 -mieee-fp  -D_SVID_SOURCE -D_BSD_SOURCE -DSHM  -c grmultitexstate.cpp
   
4. grmultitexstate.cpp: In member function `virtual void
   
5.    grMultiTexState::apply(int)':
   
6. grmultitexstate.cpp:30: error: `glActiveTexture' undeclared (first use this
   
7.    function)
   
8. grmultitexstate.cpp:30: error: (Each undeclared identifier is reported only
   
9.    once for each function it appears in.)
   
10. make[5]: *** [grmultitexstate.o] Error 1
    
11. make[5]: Leaving directory `/var/tmp/portage/torcs-1.2.2/work/torcs-1.2.2/src/modules/graphic/ssggraph'
    
12. make[4]: *** [subdirs] Error 1
    
13. make[4]: Leaving directory `/var/tmp/portage/torcs-1.2.2/work/torcs-1.2.2/src/modules/graphic'
    
14. make[3]: *** [subdirs] Error 1
    
15. make[3]: Leaving directory `/var/tmp/portage/torcs-1.2.2/work/torcs-1.2.2/src/modules'
    
16. make[2]: *** [subdirs] Error 1
    
17. make[2]: Leaving directory `/var/tmp/portage/torcs-1.2.2/work/torcs-1.2.2/src'
    
18. make[1]: *** [subdirs] Error 1
    
19. make[1]: Leaving directory `/var/tmp/portage/torcs-1.2.2/work/torcs-1.2.2'
    
20. make: *** [restart] Error 2

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编译torcs。提示30行glActiveTexture未定义。但我到看30行的函数是glActiveTextureARB而不是glActiveTexture。

这是出错那个文件

1. 
   
2. /***************************************************************************
   
3. 
   
4.     file                 : grmultitexstate.cpp
   
5.     created              : Fri Mar 22 23:16:44 CET 2002
   
6.     copyright            : (C) 2001 by Christophe Guionneau
   
7.     version              : $Id: grmultitexstate.cpp,v 1.2 2002/11/24 20:44:08 torcs Exp $
   
8. 
   
9. ***************************************************************************/
   
10. 
    
11. /***************************************************************************
    
12. *                                                                         *
    
13. *   This program is free software; you can redistribute it and/or modify  *
    
14. *   it under the terms of the GNU General Public License as published by  *
    
15. *   the Free Software Foundation; either version 2 of the License, or     *
    
16. *   (at your option) any later version.                                   *
    
17. *                                                                         *
    
18. ***************************************************************************/
    
19. 
    
20. #include <plib/ssg.h>
    
21. #include "grmultitexstate.h"
    
22. 
    
23. #ifdef DMALLOC
    
24. #include "dmalloc.h"
    
25. #endif
    
26. #include "grmain.h"
    
27. 
    
28. void grMultiTexState::apply (int unit)
    
29. {
    
30.   if (unit==0) {
    
31.       glActiveTextureARB ( GL_TEXTURE0_ARB ) ;
    
32.       glEnable ( GL_TEXTURE_2D ) ;  /* Enables the second texture map. */
    
33.       glBindTexture ( GL_TEXTURE_2D, ssgSimpleState::getTextureHandle() ) ;
    
34.   } else if (unit==1) {
    
35.       glActiveTextureARB ( GL_TEXTURE1_ARB ) ;
    
36.       glEnable ( GL_TEXTURE_2D ) ;  /* Enables the second texture map. */
    
37.       /* glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);*/
    
38.       /*glBlendFunc(GL_ZERO, GL_SRC_COLOR);*/
    
39.       glBindTexture ( GL_TEXTURE_2D, ssgSimpleState::getTextureHandle() ) ;
    
40.   } else if (unit==2) {
    
41.       glActiveTextureARB ( GL_TEXTURE2_ARB ) ;
    
42.       glEnable ( GL_TEXTURE_2D ) ;  /* Enables the second texture map. */
    
43.       glBindTexture ( GL_TEXTURE_2D, ssgSimpleState::getTextureHandle() ) ;
    
44.   } else if (unit==3) {
    
45.       glActiveTextureARB ( GL_TEXTURE3_ARB ) ;
    
46.       glEnable ( GL_TEXTURE_2D ) ;  /* Enables the second texture map. */
    
47.       glBindTexture ( GL_TEXTURE_2D, ssgSimpleState::getTextureHandle() ) ;
    
48.   } else {
    
49.       /*glActiveTextureARB ( GL_TEXTURE0_ARB ) ;*/
    
50.       glBindTexture ( GL_TEXTURE_2D, getTextureHandle() ) ;
    
51.       _ssgCurrentContext->getState()->setTexture ( getTexture () ) ;  
    
52.   }
    
53. }

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小锁

难道这个是宏替换的？

graydream

阿，有可能，我查查看

graydream

我的include/GL里确实没有glActiveTexture这个函数。谁的系统上有？