Build failure for mingw 32 bit

I have tried to compile mlt with GCC compiler targeting mingw 32 bit but it fails with this error:

FAILED: src/modules/core/CMakeFiles/mltcore.dir/transition_matte.c.obj
F:\msys64\mingw32\bin\cc.exe -DARCH_X86_64 -DUSE_SSE -Dmltcore_EXPORTS -IF:/msys64/home/x/mlt/src/modules/core/../../win
32 -IF:/msys64/home/x/mlt/src/framework/.. -mmmx -msse -msse2 -std=gnu11 -MD -MT src/modules/core/CMakeFiles/mltcore.dir
/transition_matte.c.obj -MF src\modules\core\CMakeFiles\mltcore.dir\transition_matte.c.obj.d -o src/modules/core/CMakeFi
les/mltcore.dir/transition_matte.c.obj -c F:/msys64/home/x/mlt/src/modules/core/transition_matte.c
F:/msys64/home/x/mlt/src/modules/core/transition_matte.c: In function 'copy_Y_to_A_scaled_luma_sse':
F:/msys64/home/x/mlt/src/modules/core/transition_matte.c:50:9: error: 'asm' operand has impossible constraints
   50 |         __asm__ volatile
      |         ^~~~~~~
[106/273] Building C object src/modules/core/CMakeFiles/mltcore.dir/transition_mix.c.obj
ninja: build stopped: subcommand failed.

• gcc version 12.1.0
• Target: i686-w64-mingw32
• Command: cmake -DWINDOWS_DEPLOY=OFF -DSWIG_PYTHON=ON -B bin

Start in src/modules/core/transition_matte.c at line 50 and inspect copy_Y_to_A_scaled_luma_sse, then reproduce the failure with the reported CMake command targeting i686-w64-mingw32. Compare the compiler flags and inline-assembly constraints shown in the error; done means the 32-bit MinGW build completes past this compilation step.