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SFML, Poco and OpenCV problem with static linking #2960

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ksvert opened this issue Feb 27, 2023 · 0 comments
Open

SFML, Poco and OpenCV problem with static linking #2960

ksvert opened this issue Feb 27, 2023 · 0 comments

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@ksvert
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ksvert commented Feb 27, 2023 •
edited

I'm building Qt6 project via x86_64-w64-mingw32.static-qt6-qmake. Clean qt without external libs builds perfectly but when i link to libs from title

LIBS += -lopencv_core460 -lopencv_highgui460 -lopencv_imgproc460 -lopencv_objdetect460 -lopencv_imgcodecs460 -lopencv_videoio460
LIBS += -lsfml-graphics-s -lsfml-window-s -lsfml-system-s -lsfml-network-s
LIBS += -lPocoNet -lPocoJSON -lPocoFoundation

I'm receiving following errors:

  • for SFML:
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/Gamepad.o:Gamepad.cpp:(.text+0x6d): undefined reference to `__imp__ZN2sf8Joystick6updateEv'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/Gamepad.o:Gamepad.cpp:(.text+0x7a): undefined reference to `__imp__ZN2sf8Joystick11isConnectedEj'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/Gamepad.o:Gamepad.cpp:(.text+0xa8): undefined reference to `__imp__ZN2sf8Joystick17getIdentificationEj'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/Gamepad.o:Gamepad.cpp:(.text+0xc6): undefined reference to `__imp__ZNK2sf6String12toAnsiStringB5cxx11ERKSt6locale'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/Gamepad.o:Gamepad.cpp:(.text+0x41a): undefined reference to `__imp__ZN2sf8Joystick6updateEv'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/Gamepad.o:Gamepad.cpp:(.text+0x429): undefined reference to `__imp__ZN2sf8Joystick11isConnectedEj'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/Gamepad.o:Gamepad.cpp:(.text+0x4cd): undefined reference to `__imp__ZN2sf8Joystick15getAxisPositionEjNS0_4AxisE'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/Gamepad.o:Gamepad.cpp:(.text+0x5c6): undefined reference to `__imp__ZN2sf8Joystick15isButtonPressedEjj'
  • for Poco:
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/main.o:main.cpp:(.text+0x49d8): undefined reference to `__imp__ZN4Poco3Net17HTTPClientSessionC1Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/main.o:main.cpp:(.text+0x511a): undefined reference to `__imp__ZN4Poco3Net17HTTPClientSessionD1Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoAPI.o:PocoAPI.cpp:(.text+0x3a23): undefined reference to `__imp__ZN4Poco3Net17HTTPClientSessionC1Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoAPI.o:PocoAPI.cpp:(.text+0x4817): undefined reference to `__imp__ZNK4Poco9Exception11displayTextB5cxx11Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoAPI.o:PocoAPI.cpp:(.text+0x53e3): undefined reference to `__imp__ZN4Poco3Net17HTTPClientSessionC1Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoAPI.o:PocoAPI.cpp:(.text+0x63e3): undefined reference to `__imp__ZN4Poco3Net17HTTPClientSessionC1Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoAPI.o:PocoAPI.cpp:(.text+0x6976): undefined reference to `__imp__ZN4Poco3Net14DatagramSocket9sendBytesEPKvii'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoAPI.o:PocoAPI.cpp:(.text+0x69a5): undefined reference to `__imp__ZN4Poco3Net13SocketAddressC1ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEt'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoAPI.o:PocoAPI.cpp:(.text+0x69b3): undefined reference to `__imp__ZN4Poco3Net14DatagramSocketC1Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoAPI.o:PocoAPI.cpp:(.text+0x69bf): undefined reference to `__imp__ZN4Poco3Net14DatagramSocket7connectERKNS0_13SocketAddressE'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoAPI.o:PocoAPI.cpp:(.text+0x6c0c): undefined reference to `__imp__ZN4Poco3Net14DatagramSocketD1Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoAPI.o:PocoAPI.cpp:(.text+0x6c17): undefined reference to `__imp__ZN4Poco3Net13SocketAddressD1Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoAPI.o:PocoAPI.cpp:(.text+0x6cbf): undefined reference to `__imp__ZN4Poco3Net13SocketAddressD1Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoAPI.o:PocoAPI.cpp:(.text+0x6ce0): undefined reference to `__imp__ZNK4Poco9Exception11displayTextB5cxx11Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoAPI.o:PocoAPI.cpp:(.text+0x6ddc): undefined reference to `__imp__ZNK4Poco9Exception11displayTextB5cxx11Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoAPI.o:PocoAPI.cpp:(.text+0x6eab): undefined reference to `__imp__ZN4Poco3Net14DatagramSocketD1Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoAPI.o:PocoAPI.cpp:(.text+0x6f56): undefined reference to `__imp__ZN4Poco3Net9IPAddressC1Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoAPI.o:PocoAPI.cpp:(.text+0x6f78): undefined reference to `__imp__ZN4Poco3Net13SocketAddressC1ERKNS0_9IPAddressEt'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoAPI.o:PocoAPI.cpp:(.text+0x6f7f): undefined reference to `__imp__ZN4Poco3Net9IPAddressD1Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoAPI.o:PocoAPI.cpp:(.text+0x6fa0): undefined reference to `__imp__ZN4Poco3Net14DatagramSocketC1ERKNS0_13SocketAddressEb'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoAPI.o:PocoAPI.cpp:(.text+0x6fb1): undefined reference to `__imp__ZN4Poco8TimespanC1Ell'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoAPI.o:PocoAPI.cpp:(.text+0x6fcc): undefined reference to `__imp__ZN4Poco3Net13SocketAddressD1Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoAPI.o:PocoAPI.cpp:(.text+0x7025): undefined reference to `__imp__ZN4Poco3Net13SocketAddressC1Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoAPI.o:PocoAPI.cpp:(.text+0x7042): undefined reference to `__imp__ZN4Poco3Net14DatagramSocket11receiveFromEPviRNS0_13SocketAddressEi'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoAPI.o:PocoAPI.cpp:(.text+0x7059): undefined reference to `__imp__ZNK4Poco3Net13SocketAddress4hostEv'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoAPI.o:PocoAPI.cpp:(.text+0x706d): undefined reference to `__imp__ZNK4Poco3Net9IPAddress8toStringB5cxx11Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoAPI.o:PocoAPI.cpp:(.text+0x7765): undefined reference to `__imp__ZN4Poco3Net14DatagramSocketD1Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoAPI.o:PocoAPI.cpp:(.text+0x794d): undefined reference to `__imp__ZN4Poco3Net9IPAddressD1Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoAPI.o:PocoAPI.cpp:(.text+0x79b5): undefined reference to `__imp__ZNK4Poco9Exception11displayTextB5cxx11Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoAPI.o:PocoAPI.cpp:(.text+0x7add): undefined reference to `__imp__ZN4Poco3Net14DatagramSocketD1Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoAPI.o:PocoAPI.cpp:(.text+0x7b16): undefined reference to `__imp__ZN4Poco3Net13SocketAddressD1Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoAPI.o:PocoAPI.cpp:(.text+0x7bc0): undefined reference to `__imp__ZN4Poco3Net13SocketAddressD1Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoAPI.o:PocoAPI.cpp:(.text+0x7cca): undefined reference to `__imp__ZN4Poco3Net17HTTPClientSessionD1Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoRestAPI.o:PocoRestAPI.cp:(.text+0x163): undefined reference to `__imp__ZN4Poco3Net17HTTPClientSession7setHostERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoRestAPI.o:PocoRestAPI.cp:(.text+0x176): undefined reference to `__imp__ZN4Poco3Net17HTTPClientSession7setPortEt'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoRestAPI.o:PocoRestAPI.cp:(.text+0x19b): undefined reference to `__imp__ZN4Poco8TimespanC1Ell'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoRestAPI.o:PocoRestAPI.cp:(.text+0x1a7): undefined reference to `__imp__ZN4Poco3Net11HTTPSession10setTimeoutERKNS_8TimespanE'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoRestAPI.o:PocoRestAPI.cp:(.text+0x1da): undefined reference to `__imp__ZN4Poco3Net17HTTPClientSession7setHostERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoRestAPI.o:PocoRestAPI.cp:(.text+0x1e6): undefined reference to `__imp__ZN4Poco3Net17HTTPClientSession7setPortEt'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoRestAPI.o:PocoRestAPI.cp:(.text+0x1fc): undefined reference to `__imp__ZN4Poco8TimespanC1Ell'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoRestAPI.o:PocoRestAPI.cp:(.text+0x208): undefined reference to `__imp__ZN4Poco3Net11HTTPSession10setTimeoutERKNS_8TimespanE'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoRestAPI.o:PocoRestAPI.cp:(.text+0x2ff): undefined reference to `__imp__ZN4Poco8TimespanC1ERKS0_'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoRestAPI.o:PocoRestAPI.cp:(.text+0x30b): undefined reference to `__imp__ZN4Poco8Timespan7SECONDSE'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoRestAPI.o:PocoRestAPI.cp:(.text+0x352): undefined reference to `__imp__ZN4Poco3Net11HTTPMessage8HTTP_1_1B5cxx11E'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoRestAPI.o:PocoRestAPI.cp:(.text+0x35b): undefined reference to `__imp__ZN4Poco3Net11HTTPRequestC1ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES9_S9_'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoRestAPI.o:PocoRestAPI.cp:(.text+0x36c): undefined reference to `__imp__ZN4Poco3Net12HTTPResponseC1Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoRestAPI.o:PocoRestAPI.cp:(.text+0x373): undefined reference to `__imp__ZN4Poco3Net11HTTPRequest8HTTP_GETB5cxx11E'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoRestAPI.o:PocoRestAPI.cp:(.text+0x3f9): undefined reference to `__imp__ZN4Poco3Net11HTTPMessage14setContentTypeERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoRestAPI.o:PocoRestAPI.cp:(.text+0x427): undefined reference to `__imp__ZN4Poco3Net11HTTPMessage16setContentLengthEx'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoRestAPI.o:PocoRestAPI.cp:(.text+0x433): undefined reference to `__imp__ZN4Poco3Net17HTTPClientSession11sendRequestERNS0_11HTTPRequestE'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoRestAPI.o:PocoRestAPI.cp:(.text+0x467): undefined reference to `__imp__ZN4Poco3Net17HTTPClientSession15receiveResponseERNS0_12HTTPResponseE'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoRestAPI.o:PocoRestAPI.cp:(.text+0x49b): undefined reference to `__imp__ZN4Poco3Net12HTTPResponseD1Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoRestAPI.o:PocoRestAPI.cp:(.text+0x4a4): undefined reference to `__imp__ZN4Poco3Net11HTTPRequestD1Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoRestAPI.o:PocoRestAPI.cp:(.text+0x8a7): undefined reference to `__imp__ZN4Poco16NullOutputStreamC1Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoRestAPI.o:PocoRestAPI.cp:(.text+0x8be): undefined reference to `__imp__ZN4Poco12StreamCopier10copyStreamERSiRSoy'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoRestAPI.o:PocoRestAPI.cp:(.text+0x8cd): undefined reference to `__imp__ZN4Poco16NullOutputStreamD1Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoRestAPI.o:PocoRestAPI.cp:(.text+0xe37): undefined reference to `__imp__ZN4Poco3Net12HTTPResponseD1Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoRestAPI.o:PocoRestAPI.cp:(.text+0xe40): undefined reference to `__imp__ZN4Poco3Net11HTTPRequestD1Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoRestAPI.o:PocoRestAPI.cp:(.text+0xf1a): undefined reference to `__imp__ZN4Poco16NullOutputStreamD1Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoRestAPI.o:PocoRestAPI.cp:(.text+0xf78): undefined reference to `__imp__ZNK4Poco9Exception11displayTextB5cxx11Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoRestAPI.o:PocoRestAPI.cp:(.text+0x1087): undefined reference to `__imp__ZN4Poco3Net11HTTPRequest8HTTP_PUTB5cxx11E'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoRestAPI.o:PocoRestAPI.cp:(.text+0x1152): undefined reference to `__imp__ZN4Poco3Net11HTTPRequest8HTTP_PUTB5cxx11E'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoRestAPI.o:PocoRestAPI.cp:(.text+0x1207): undefined reference to `__imp__ZN4Poco3Net11HTTPRequest11HTTP_DELETEB5cxx11E'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/PocoRestAPI.o:PocoRestAPI.cp:(.text+0x12d2): undefined reference to `__imp__ZN4Poco3Net11HTTPRequest11HTTP_DELETEB5cxx11E'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/Frontend.o:Frontend.cpp:(.text+0x2e82): undefined reference to `__imp__ZN4Poco3Net11HTTPRequest8HTTP_GETB5cxx11E'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/Frontend.o:Frontend.cpp:(.text+0x453b): undefined reference to `__imp__ZN4Poco3Net17HTTPClientSessionC1Ev'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: release/Frontend.o:Frontend.cpp:(.text+0xb07a): undefined reference to `__imp__ZN4Poco3Net17HTTPClientSessionD1Ev'
  • for OpenCV:
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: /home/ks/Projects/MXE/mxe/usr/lib/gcc/x86_64-w64-mingw32.static/11.3.0/../../../../x86_64-w64-mingw32.static/lib/../lib/libopencv_videoio460.a(cap_ffmpeg.cpp.obj):cap_ffmpeg.cpp:(.text$__tcf_0+0x7): undefined reference to `av_log_set_callback'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: /home/ks/Projects/MXE/mxe/usr/lib/gcc/x86_64-w64-mingw32.static/11.3.0/../../../../x86_64-w64-mingw32.static/lib/../lib/libopencv_videoio460.a(cap_ffmpeg.cpp.obj):cap_ffmpeg.cpp:(.text$_ZL19ffmpeg_log_callbackPviPKcPc+0x10): undefined reference to `av_log_get_level'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: /home/ks/Projects/MXE/mxe/usr/lib/gcc/x86_64-w64-mingw32.static/11.3.0/../../../../x86_64-w64-mingw32.static/lib/../lib/libopencv_videoio460.a(cap_ffmpeg.cpp.obj):cap_ffmpeg.cpp:(.text$_ZN16CvCapture_FFMPEG4initEv+0xe3): undefined reference to `av_init_packet'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: /home/ks/Projects/MXE/mxe/usr/lib/gcc/x86_64-w64-mingw32.static/11.3.0/../../../../x86_64-w64-mingw32.static/lib/../lib/libopencv_videoio460.a(cap_ffmpeg.cpp.obj):cap_ffmpeg.cpp:(.text$_ZN16CvCapture_FFMPEG4initEv+0x175): undefined reference to `av_init_packet'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: /home/ks/Projects/MXE/mxe/usr/lib/gcc/x86_64-w64-mingw32.static/11.3.0/../../../../x86_64-w64-mingw32.static/lib/../lib/libopencv_videoio460.a(cap_ffmpeg.cpp.obj):cap_ffmpeg.cpp:(.text$_ZN16CvCapture_FFMPEG5closeEv+0x16): undefined reference to `sws_freeContext'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: /home/ks/Projects/MXE/mxe/usr/lib/gcc/x86_64-w64-mingw32.static/11.3.0/../../../../x86_64-w64-mingw32.static/lib/../lib/libopencv_videoio460.a(cap_ffmpeg.cpp.obj):cap_ffmpeg.cpp:(.text$_ZN16CvCapture_FFMPEG5closeEv+0x34): undefined reference to `av_frame_free'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: /home/ks/Projects/MXE/mxe/usr/lib/gcc/x86_64-w64-mingw32.static/11.3.0/../../../../x86_64-w64-mingw32.static/lib/../lib/libopencv_videoio460.a(cap_ffmpeg.cpp.obj):cap_ffmpeg.cpp:(.text$_ZN16CvCapture_FFMPEG5closeEv+0x54): undefined reference to `avformat_close_input'
/home/ks/Projects/MXE/mxe/usr/bin/x86_64-w64-mingw32.static-ld: /home/ks/Projects/MXE/mxe/usr/lib/gcc/x86_64-w64-mingw32.static/11.3.0/../../../../x86_64-w64-mingw32.static/lib/../lib/libopencv_videoio460.a(cap_ffmpeg.cpp.obj):cap_ffmpeg.cpp:(.text$_ZN16CvCapture_FFMPEG5closeEv+0x66): undefined reference to `av_frame_unref'

...

Full log at: https://pastebin.com/n13wRmmM

From what i've read, __imp_ suggests that linker looks for dll symbols, but i want static. Errors for SFML can be bypassed by linking directly to files:

LIBS += /home/ks/Projects/MXE/mxe/usr/x86_64-w64-mingw32.static/lib/libsfml-graphics-s.a /home/ks/Projects/MXE/mxe/usr/x86_64-w64-mingw32.static/lib/libsfml-window-s.a /home/ks/Projects/MXE/mxe/usr/x86_64-w64-mingw32.static/lib/libsfml-system-s.a

For Poco, same method doesn't work. Besides, it's simply a workaround and imo not proper method.

With OpenCV i've also tried linking libav* libs but it resulted only in longer error log. I've tried also linking via pkg-config by adding these lines to .pro file:

CONFIG += link_pkgconfig
PKGCONFIG += opencv4

but it didn't work either, errors were same as via -l command.

Also i find it strange, that i have to add include path to opencv4 folder in qt .pro file

INCLUDEPATH += /home/ks/Projects/MXE/mxe/usr/x86_64-w64-mingw32.static/include/opencv4/

shouldn't it be somehow automatically handled? If i include <opencv4/opencv2/opencv.hpp> in my cpp file, compilation returns errors, because in opencv headers includes refer to <opencv2/opencv.hpp>
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