This bug report was migrated from our old Bugzilla tracker.

These attachments are available in the static archive:

• Fix for Visual Studio 2005 (SDL_VS2005.fix, text/plain, 2011-01-22 12:03:03 +0000, 1506 bytes)

Reported in version: 2.0.3
Reported for operating system, platform: Windows (All), x86

Comments on the original bug report:

On 2011-01-21 01:52:11 +0000, John Wilson wrote:

1>c:\program files\microsoft visual studio 8\vc\include\ivec.h(233) : error C2733: second C linkage of overloaded function 'cmpeq' not allowed
1> c:\program files\microsoft visual studio 8\vc\include\ivec.h(233) : see declaration of 'cmpeq'

This is only the first of many errors regarding C linkage and overloaded functions. I traced it all back to SDL_atomic.h, where 'extern "C" {' is used, and while it is still in effect, 'intrin.h' is included, which leads to a long string of includes that end up at 'ivec.h'. This file uses function overloading and is not suitable for C linkage, thus I get lots of compiler errors in projects that use SDL.

On 2011-01-21 09:38:57 +0000, Sam Lantinga wrote:

I assume you're working on a C++ project?

Does it work to close the C linkage around the include?

e.g.
}
#include <intrin.h>
extern "C" {

On 2011-01-21 19:29:13 +0000, John Wilson wrote:

(In reply to comment # 1)

I assume you're working on a C++ project?

Does it work to close the C linkage around the include?

e.g.
}
#include <intrin.h>
extern "C" {

Yes, I'm using C++. I tried what you suggested, and it made it through the whole of SDL.h without errors. However, my project includes SDL_opengl.h right after that, which leads to winnt.h and these 2 errors:

1>c:\program files\microsoft sdks\windows\v6.0a\include\winnt.h(3112) : error C2733: second C linkage of overloaded function '_interlockedbittestandset' not allowed
1> c:\program files\microsoft sdks\windows\v6.0a\include\winnt.h(3109) : see declaration of '_interlockedbittestandset'
1>c:\program files\microsoft sdks\windows\v6.0a\include\winnt.h(3118) : error C2733: second C linkage of overloaded function '_interlockedbittestandreset' not allowed
1> c:\program files\microsoft sdks\windows\v6.0a\include\winnt.h(3115) : see declaration of '_interlockedbittestandreset'

I would say that intrin.h and winnt.h are conflicting somehow, as I don't get those errors if I comment out the SDL_atomic header.

I found that if I defined PREFIX it skips over that section of winnt.h and my project compiles successfully.

On 2011-01-21 23:23:32 +0000, Sam Lantinga wrote:

sigh

What happens if you just put these in a file by themselves?
#include <intrin.h>
#include <windows.h>
#include <winnt.h>

On 2011-01-21 23:27:28 +0000, Sam Lantinga wrote:

A little googling shows that this is a common problem. Hmm.

On 2011-01-21 23:28:55 +0000, Sam Lantinga wrote:

Are you using Visual Studio 2005?

On 2011-01-21 23:32:41 +0000, Sam Lantinga wrote:

Nevermind, it's in the subject. :)

On 2011-01-22 12:03:03 +0000, Sam Lantinga wrote:

Created attachment 556
Fix for Visual Studio 2005

On 2011-08-21 00:37:23 +0000, Ryan C. Gordon wrote:

Fixing up some bug report metadata.

--ryan.

On 2011-08-21 00:55:25 +0000, Ryan C. Gordon wrote:

Resolving bug: Sam committed the patch in Attachment # 556 as hg changeset 1e94e68525d5.

--ryan.

On 2014-08-12 15:02:55 +0000, wrote:

I have the same issue with VS 2008 and SDL 2.0.3.
Could you please look int this?

On 2014-08-12 15:04:40 +0000, wrote:

I'm trying to move from SDL 1.2.15 to SDL 2.0.3

On 2014-08-12 15:24:54 +0000, wrote:

Not sure if this error is related to "atomic" component, but anyway here is a part of the errors:

Error 12 error C2733: second C linkage of overloaded function 'cmpeq' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 233
Error 14 error C2733: second C linkage of overloaded function 'cmpneq' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 234
Error 20 error C2733: second C linkage of overloaded function 'unpack_low' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 240
Error 22 error C2733: second C linkage of overloaded function 'unpack_high' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 241
Error 24 error C2733: second C linkage of overloaded function 'cmpeq' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 308
Error 26 error C2733: second C linkage of overloaded function 'cmpneq' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 309
Error 28 error C2733: second C linkage of overloaded function 'unpack_low' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 311
Error 30 error C2733: second C linkage of overloaded function 'unpack_high' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 312
Error 33 error C2733: second C linkage of overloaded function 'cmpeq' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 346
Error 35 error C2733: second C linkage of overloaded function 'cmpneq' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 347
Error 37 error C2733: second C linkage of overloaded function 'unpack_low' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 349
Error 39 error C2733: second C linkage of overloaded function 'unpack_high' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 350
Error 41 error C2733: second C linkage of overloaded function 'operator *' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 422
Error 43 error C2733: second C linkage of overloaded function 'cmpeq' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 425
Error 45 error C2733: second C linkage of overloaded function 'cmpneq' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 426
Error 47 error C2733: second C linkage of overloaded function 'cmpgt' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 427
Error 49 error C2733: second C linkage of overloaded function 'cmplt' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 428
Error 51 error C2733: second C linkage of overloaded function 'cmple' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 429
Error 53 error C2733: second C linkage of overloaded function 'cmpge' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 430
Error 55 error C2733: second C linkage of overloaded function 'unpack_low' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 432
Error 57 error C2733: second C linkage of overloaded function 'unpack_high' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 433
Error 63 error C2733: second C linkage of overloaded function 'operator *' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 509
Error 65 error C2733: second C linkage of overloaded function 'cmpeq' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 510
Error 67 error C2733: second C linkage of overloaded function 'cmpneq' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 511
Error 69 error C2733: second C linkage of overloaded function 'sat_add' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 513
Error 71 error C2733: second C linkage of overloaded function 'sat_sub' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 514
Error 73 error C2733: second C linkage of overloaded function 'unpack_low' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 516
Error 75 error C2733: second C linkage of overloaded function 'unpack_high' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 517
Error 77 error C2733: second C linkage of overloaded function 'cmpeq' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 544
Error 79 error C2733: second C linkage of overloaded function 'cmpneq' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 545
Error 81 error C2733: second C linkage of overloaded function 'unpack_low' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 547
Error 83 error C2733: second C linkage of overloaded function 'unpack_high' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 548
Error 85 error C2733: second C linkage of overloaded function 'cmpeq' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 617
Error 87 error C2733: second C linkage of overloaded function 'cmpneq' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 618
Error 89 error C2733: second C linkage of overloaded function 'cmpgt' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 619
Error 91 error C2733: second C linkage of overloaded function 'cmplt' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 620
Error 93 error C2733: second C linkage of overloaded function 'cmple' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 621
Error 95 error C2733: second C linkage of overloaded function 'cmpge' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 622
Error 97 error C2733: second C linkage of overloaded function 'unpack_low' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 624
Error 99 error C2733: second C linkage of overloaded function 'unpack_high' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 625
Error 101 error C2733: second C linkage of overloaded function 'sat_add' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 627
Error 103 error C2733: second C linkage of overloaded function 'sat_sub' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 628
Error 105 error C2733: second C linkage of overloaded function 'cmpeq' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 694
Error 107 error C2733: second C linkage of overloaded function 'cmpneq' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 695
Error 109 error C2733: second C linkage of overloaded function 'unpack_low' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 697
Error 111 error C2733: second C linkage of overloaded function 'unpack_high' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 698
Error 113 error C2733: second C linkage of overloaded function 'sat_add' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 700
Error 115 error C2733: second C linkage of overloaded function 'sat_sub' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 701
Error 118 error C2733: second C linkage of overloaded function 'pack_sat' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 704
Error 121 error C2733: second C linkage of overloaded function 'operator &' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 718
Error 123 error C2733: second C linkage of overloaded function 'operator |' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 718
Error 125 error C2733: second C linkage of overloaded function 'operator ^' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 718
Error 127 error C2733: second C linkage of overloaded function 'andnot' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 718
Error 129 error C2733: second C linkage of overloaded function 'operator &' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 719
Error 131 error C2733: second C linkage of overloaded function 'operator |' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 719
Error 133 error C2733: second C linkage of overloaded function 'operator ^' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 719
Error 135 error C2733: second C linkage of overloaded function 'andnot' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 719
Error 137 error C2733: second C linkage of overloaded function 'operator &' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 720
Error 139 error C2733: second C linkage of overloaded function 'operator |' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 720
Error 141 error C2733: second C linkage of overloaded function 'operator ^' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 720
Error 143 error C2733: second C linkage of overloaded function 'andnot' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 720
Error 145 error C2733: second C linkage of overloaded function 'operator &' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 721
Error 147 error C2733: second C linkage of overloaded function 'operator |' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 721
Error 149 error C2733: second C linkage of overloaded function 'operator ^' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 721
Error 151 error C2733: second C linkage of overloaded function 'andnot' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 721
Error 153 error C2733: second C linkage of overloaded function 'operator &' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 722
Error 155 error C2733: second C linkage of overloaded function 'operator |' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 722
Error 157 error C2733: second C linkage of overloaded function 'operator ^' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 722
Error 159 error C2733: second C linkage of overloaded function 'andnot' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 722
Error 161 error C2733: second C linkage of overloaded function 'operator &' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 723
Error 163 error C2733: second C linkage of overloaded function 'operator |' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 723
Error 165 error C2733: second C linkage of overloaded function 'operator ^' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 723
Error 167 error C2733: second C linkage of overloaded function 'andnot' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 723
Error 169 error C2733: second C linkage of overloaded function 'operator &' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 724
Error 171 error C2733: second C linkage of overloaded function 'operator |' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 724
Error 173 error C2733: second C linkage of overloaded function 'operator ^' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 724
Error 175 error C2733: second C linkage of overloaded function 'andnot' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 724
Error 177 error C2733: second C linkage of overloaded function 'operator &' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 725
Error 179 error C2733: second C linkage of overloaded function 'operator |' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 725
Error 181 error C2733: second C linkage of overloaded function 'operator ^' not allowed c:\program files (x86)\microsoft visual studio 9.0\vc\include\ivec.h 725

On 2014-08-17 20:48:12 +0000, Sam Lantinga wrote:

Can you try with the latest snapshot?
http://www.libsdl.org/tmp/SDL-2.0.zip

I'm building here with Visual Studio 2008 with no problems. I created a file called test.cpp with these lines in it, and it compiled just fine:

#include <windows.h>
#include "SDL_atomic.h"

If you're still having problems, can you post a code snippet that when compiled alone, shows the problem?

Thanks!

On 2015-05-26 13:29:37 +0000, Sam Lantinga wrote:

No response, I'm going to assume this is fixed.