Transform360 issues building for Windows

[SteUK]

Hi,

As others seem to have had, I am getting issues building ffmpeg with Transform360. I am using MSYS2 and the CMake produces a VisualStudio2015 solution to build a Transform360.lib. I then use this via the configure command...

./configure --prefix=ffmpeg/ --extra-cflags=-I"/usr/local/include" --extra-ldflags='-L/usr/local/lib -static' --pkg-config-flags="--static" --enable-nonfree --enable-gpl --enable-static --disable-shared --enable-libx264 --enable-libx265 --enable-libfdk_aac --enable-nvenc --extra-libs='Transform360.lib'

The subsequent 'make' call then spits out the error...

libavfilter\libavfilter.a(vf_transform360.o): In function generate_map': C:\msys64\home\stebu\ffmpeg_nvidia_cubemap2/libavfilter/vf_transform360.c:140: undefined reference to VideoFrameTransform_new'
C:\msys64\home\stebu\ffmpeg_nvidia_cubemap2/libavfilter/vf_transform360.c:140:(.text+0x57f): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `VideoFrameTransform_new'

I am betting it is because the transform lib has been made with VS compiler, and ffmpeg is being compiled with gcc...

Can anyone offer any guidance?

Thanks!

[SteUK]

To answer my own question...

Yes, it is the use of multiple compilers. I have made everything with make (gcc) and, with a little bit of fiddling, managed to build up ffmpeg with Transform360 for Windows under MSYS2.

Case closed!

[EthanXzhang]

I face the same problem when I use Cmake to generate the Translate360 in Win10/VS2017.
Everything seems OK before using MSYS2 to make FFMpeg，but the undefined reference problem appeared(the same as yours).
Thanks for report your solution.

[EthanXzhang]

hi！I still trapped by this problem.
I build it in Ubuntu, using openCV 3.1.0. Move the lib and include to windows and add it when configure the FFMpeg. In other issue(#35), I read a solution about change the version of openCV, but I try and it doesn't work.
Can you give more detail about this issues solution.Thanks a lot!

[xuws20]

ffmpeg in windows:https://github.com/ShiftMediaProject
use cmake produce vs2015 project
CMakeLists.txt delete the line about opencv

[badtrip987]

I'm having the same issue when building using msys2 and cmake. What fiddling did you do?

[rdp]

Just ran into this (all same compiler), I had to modify ffbuild/config.mak and "move" -lTransform360 to just before the opencv libraries (no idea how this ever worked before). See also https://stackoverflow.com/a/54209992/32453