module unsafe for SAFESEH image C++

90
votes

I am using Microsoft Visual Studio 2011 Professional Beta

I am trying to run the OpenCV C++ files (http://opencv.willowgarage.com/wiki/Welcome) that I have compiled using cMake & the Visual Studio Complier.

However when I go to debug the project I get 600+ errors most of them being:

error LNK2026: module unsafe for SAFESEH image.

Apparently these files are in the opencv_ffmpeg project but I couldn't find them, I have had a look at the safeseh Safe Exception Handlers page on the Microsoft help page but I couldn't find any definitive answers.

I was wondering if anyone else has had this problem and if they managed to fix it.

5
c++visual-studiovisual-c++
This happens when you link an .obj or .lib that contains code created by an earlier version of the compiler. Which of course would be common if you downloaded a binary for opencv_ffmpeg instead of the source. You can turn the linker option off but then you'll still have a CRT version incompatibility that can byte. Rebuild the library from source. – Hans Passant
Thanks for the help, it worked – Aaron Thompson
@HansPassant What to do when there is no source? – GregC
The obvious thing: ask the owner of the code to provide you with an update. – Hans Passant
@HansPassant I hope the supplier is still around to make an update. Sounds like a "truck factor of one" kind of problem. – GregC

5 Answers

65
votes

From the comments:

This happens when you link an .obj or .lib that contains code created by an earlier version of the compiler. Which of course would be common if you downloaded a binary for opencv_ffmpeg instead of the source. You can turn the linker option off but then you'll still have a CRT version incompatibility that can byte. Rebuild the library from source. – Hans Passant May 15 at 13:01  
 
Thanks for the help, it worked – Aaron Thompson May 17 at 14:50

153
votes

Disabling option "Image has Safe Exception Handlers" in Project properties -> Configuration Properties -> Linker -> Advanced tab helped me.

14
votes

If you got this error while building ZLIB in Visual Studio here is the solution. Look for contrib\masmx86\bld_ml32.bat and add /safeseh as a option

Before

ml /coff /Zi /c /Flmatch686.lst match686.asm
ml /coff /Zi /c /Flinffas32.lst inffas32.asm

After

ml /safeseh /coff /Zi /c /Flmatch686.lst match686.asm
ml /safeseh /coff /Zi /c /Flinffas32.lst inffas32.asm
11
votes

Other way is to add some SEH handler (empty for example) to asm files and compile them with /safeseh option, then compile other code normally with /SAFESEH:YES compiler option.

Empty SEH handler:

.safeseh SEH_handler

SEH_handler   proc
;handler
ret

SEH_handler   endp
0
votes

Your mileage may vary, but none of the above suggestions worked for me (although I did not try rolling my own asm exception handler).

What did work was to select build target Release/x64.

I am running Windows 10 on a 64-bit machine, and using Visual Studio 2015.

The target Release/Win32 works, too. I guess the main thing is to pick "Release".