Help compiling OpenCV

_Flaviu

Hi. I need to use OpenCV in some project, and I noticed that I have to compile myself OpenCV library. So, I have downloaded the latest version from here: Releases - OpenCV library[^] and I have generated the project file for VS2008, with CMake (using Windows 1064bit). All of these steps have been completed without any error. The problem begin when I have tried to compile the library itself ... I got a lot of errors:

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45>C:\Flaviu\opencv\sources\modules\core\include\opencv2/core/softfloat.hpp(356) : error C2065: 'uint_fast64_t' : undeclared identifier
45>C:\Flaviu\opencv\sources\modules\core\include\opencv2/core/softfloat.hpp(358) : error C2065: 'uint_fast64_t' : undeclared identifier
45>C:\Flaviu\opencv\sources\modules\core\include\opencv2/core/softfloat.hpp(393) : error C2146: syntax error : missing ';' before identifier 'cvRound64'
...
...

Of course, I have read the tutorials about compiling OpenCV, seem to be ok how I get the steps ... but the errors persist ... if you have some experience with OpenCV, could you help me ? Thank you.

Victor Nijegorodov

Did you include the ?

_Flaviu

Where should I insert this header ?

_Flaviu

For the moment I am compiling the OpenCV library, and I didn't edit any source code. Perhaps I put too less information regarding the errors:

1>C:\Flaviu\opencv\sources\modules\core\include\opencv2/core/softfloat.hpp(189) : error C2065: 'uint_fast32_t' : undeclared identifier
1>C:\Flaviu\opencv\sources\modules\core\include\opencv2/core/softfloat.hpp(189) : error C2146: syntax error : missing ';' before identifier 'vv'
1>C:\Flaviu\opencv\sources\modules\core\include\opencv2/core/softfloat.hpp(189) : error C2065: 'vv' : undeclared identifier
1>C:\Flaviu\opencv\sources\modules\core\include\opencv2/core/softfloat.hpp(190) : error C2065: 'vv' : undeclared identifier
1>C:\Flaviu\opencv\sources\modules\core\include\opencv2/core/softfloat.hpp(314) : error C2065: 'uint_fast64_t' : undeclared identifier
1>C:\Flaviu\opencv\sources\modules\core\include\opencv2/core/softfloat.hpp(321) : error C2065: 'uint_fast64_t' : undeclared identifier
1>C:\Flaviu\opencv\sources\modules\core\include\opencv2/core/softfloat.hpp(331) : error C2065: 'uint_fast64_t' : undeclared identifier
1>C:\Flaviu\opencv\sources\modules\core\include\opencv2/core/softfloat.hpp(331) : error C2146: syntax error : missing ';' before identifier 'vv'
1>C:\Flaviu\opencv\sources\modules\core\include\opencv2/core/softfloat.hpp(331) : error C2065: 'vv' : undeclared identifier
1>C:\Flaviu\opencv\sources\modules\core\include\opencv2/core/softfloat.hpp(331) : error C2065: 'uint_fast64_t' : undeclared identifier
1>C:\Flaviu\opencv\sources\modules\core\include\opencv2/core/softfloat.hpp(332) : error C2065: 'vv' : undeclared identifier
1>C:\Flaviu\opencv\sources\modules\core\include\opencv2/core/softfloat.hpp(348) : error C2065: 'uint_fast64_t' : undeclared identifier
1>C:\Flaviu\opencv\sources\modules\core\include\opencv2/core/softfloat.hpp(352) : error C2065: 'uint_fast64_t' : undeclared identifier
1>C:\Flaviu\opencv\sources\modules\core\include\opencv2/core/softfloat.hpp(354) : error C2065: 'uint_fast64_t' : undeclared identifier
1>C:\Flaviu\opencv\sources\modules\core\include\opencv2/core/softfloat.hpp(356) : error C2065: 'uint_fast64_t' : undeclared identifier
1>C:\Flaviu\opencv\sources\modules\core\include\opencv2/core/softfloat.hpp(358) : error C2065: 'uint_fast64_t' : undeclared identifier
1>C:\Flaviu\opencv\sources\modules\core\include\opencv2/core/softfloat.hpp(393) : error C2146: syntax error : missing ';' before identifier 'cvRound64'
1>C:\Flaviu\opencv\sources\modules\core\include\opencv2/core/softfloat.hpp(393) : error C443

Victor Nijegorodov

If you are using precompiled header then in stdafx.h. Otherwise - at the begin of the .hpp file that needs these type definitions (uint_fast64_t and so on)

Jochen Arndt

I have no experience with OpenCV but the reason for those errors is obvious.

Quote:

I have generated the project file for VS2008

The int_fast and int_least types has been introduced with C++11 and are supported by Visual Studio since VS 2015 (see Standard Types[^]). You might define them yourself as

typedef uint64_t uint_fast64_t;

You might also check if using C++11 is set somewhere in the OpenCV make file and disable that in the hope that the types are then defined somewhere.