Merge pull request #239 from atsju/JST/missingDLL

distribute missing libgfortran-5.dll with QT6 installer

Author: atsju

.github/workflows/build-windows.yml

@@ -360,6 +360,7 @@ jobs:
           Copy-Item ".\build_openCV\install\x64\mingw\bin\libopencv_imgproc4120.dll" -Destination ".\DFTFringe\DFTFringeInstaller\packages\com.githubdoe.DFTFringe\data"
           Copy-Item ".\qwt-${{env.QWT_version}}\lib\qwt.dll" -Destination ".\DFTFringe\DFTFringeInstaller\packages\com.githubdoe.DFTFringe\data"
           Copy-Item ".\${{env.QT_version}}\mingw_64\bin\Qt6OpenGL.dll" -Destination ".\DFTFringe\DFTFringeInstaller\packages\com.githubdoe.DFTFringe\data"
+          Copy-Item ".\tools\mingw${{env.mingw_version}}_64\bin\libgfortran-5.dll" -Destination ".\DFTFringe\DFTFringeInstaller\packages\com.githubdoe.DFTFringe\data"
           Copy-Item ".\tools\mingw${{env.mingw_version}}_64\bin\libquadmath-0.dll" -Destination ".\DFTFringe\DFTFringeInstaller\packages\com.githubdoe.DFTFringe\data"
           Copy-Item ".\DFTFringe\ColorMaps" -Destination ".\DFTFringe\DFTFringeInstaller\packages\com.githubdoe.DFTFringe\data\ColorMaps" -Recurse
           mkdir ".\DFTFringe\DFTFringeInstaller\packages\com.githubdoe.DFTFringe\data\res"