Win10 Compiler Failed

[HikariS97]

Hi, I use qt creator to compile kvazzup but failed. Here's my folder structure ./msvc_libs

( Here comes another question. I tried thousand times to compile openHEVC, there's so many compile errors when using cmake and msvc. Finally I got a dll named LibOpenHevcWrapper.dll with out a prefix 'lib'. I use this dll at first, but got a error 'file format not recognized'. Then I replace this dll to the one at openHEVC-hevc_rext\bin\ffmpeg_w32 )

./include

And I comment off win32-gcc in .pro file. If not, errors like 'cannot find -lkvazaar.dll' appear. But actually, I didn't got dlls for opus, speexdsp and kvazaar.

Finally, I got 1900+ errors like these

I don't know how to fix these up, could you give me help ?

Here's the screenshot of edited .pro file

[jrsnen]

Hi,

First of all thank you for your interest in Kvazzup. Those libraries can be a bit hard to compile.

At quick glance it looks like you are using mix of MinGW and MSVC compiled libraries. You should use the same compiler for all libraries and for Kvazzup. Also there is a known issue for compiling kvzRTP with MSVC so I would recommend using MinGW or waiting until the issue is resolved if you want to use MSVC.

[HikariS97]

@polusto Hi, thanks for your advice. I tried to complie those libs by using mingw64 + msys2. Except openHEVC, other static libs are compiled successfullly. But when I try to build kvazzup, some errors appeared. Do you have any idea of these erros? It's more better than the beginning ( 1900+ errors).

[jrsnen]

Hard to tell exactly with this information, but it seems that your build environment is missing openMP which is giving you those omp/GOMP errors. As for kvazaar, are you sure you have used the same compiler for it?

[HikariS97]

Yes. I use msys2 and mingw64. Compiled by Clang. There's only one error with kvazaar

[jrsnen]

I'm assuming you are mixing 32-bit and 64-bit MinGW builds which to my knowledge does not work. You have to either use 32-bit or 64-bit for all. I'm not familiar with Clang, but I would assume that it works as long as you build the correct binaries.

[HikariS97]

@polusto I complied kvazaar by ./configure --host=x86_64-w64-mingw32 make I get the static lib named libkvazaar.a (5412kB) If I use "Desktop Qt 5.14.2 MinGW 64-bit", I got error with __imp_kvz_api_get if I use "Desktop Qt 5.14.2 MinGW 32-bit", the error with kvazaar disappear( but other 64-bit libs alert) Does it mean I'm building 32-bit lib of kvazaar?

[HikariS97]

It seems like 64-bit

[fador]

I think you might have to define KVZ_STATIC_LIB when building Kvazzup, so that the kvazaar.h doesn't define "import library" but the static library functions..

[jrsnen]

I can see the folder msvc_libs in you path which is the default path for MSVC compiler. Are you sure you are using MinGW to compile Kvazzup and have correct libraries at correct places? (which currently is ./lib64 for MinGW libraries).

[HikariS97]

Yes, I delete "win32-msvc{" and "win32-g++{".

[jrsnen]

Are you mixing 32 and 64 bit libraries or have you compiled all libraries with either 32 or 64 bit MinGW?

[HikariS97]

fador is right. I add #define KVZ_STATIC_LIB in kvazaar.h, then error disappear.

[jrsnen]

That is great. I'll check the compilation process for kvazaar and afterwards I'll close this issue.

[HikariS97]

I think it's a confusing process for a rookie to compile kvazzup and dependency libs. If kvzrtp could only be compiled by mingw ( at least, now), u should delete the choice of win32-msvc. And the code in code block win32-g++, which is in .dll format, also confused me.

LIBS += -fopenmp ( yes, it's also need in msvc) LIBS += -lssp (It's required by mingw64) BTW, if someone encounter a compile error when compiling opus by mingw, he could also need add -lssp in makefile.

[jrsnen]

Thank you for your input. The MSVC used to work, but there have been a lot of big changes recently and everything has not been kept up to date as it should have been. Sorry that you had go through unnecessary hoops. I'll comment MSVC out for now and remove those dll endings.