Windows - unable to load dll - they are all there though

[andreas-it-dev]

Hi,
i've got an issue on windows 11 and am unsure if i screwed up, if it is a bug or some weird windows thing..

this is the error message when trying to process an image from within rails:

VIPS-WARNING **: 06:59:07.223: unable to load "C:\Ruby31-x64\msys64\ucrt64/lib/vips-modules-8.13\vips-heif.dll" -- 'C:\Ruby31-x64\msys64\ucrt64/lib/vips-modules-8.13\vips-heif.dll': Das angegebene Modul wurde nicht gefunden.

GModule-CRITICAL **: 06:59:07.224: g_module_make_resident: assertion 'module != NULL' failed

VIPS-WARNING **: 06:59:07.236: unable to load "C:\Ruby31-x64\msys64\ucrt64/lib/vips-modules-8.13\vips-jxl.dll" -- 'C:\Ruby31-x64\msys64\ucrt64/lib/vips-modules-8.13\vips-jxl.dll': Das angegebene Modul wurde nicht gefunden.

GModule-CRITICAL **: 06:59:07.236: g_module_make_resident: assertion 'module != NULL' failed

VIPS-WARNING **: 06:59:07.248: unable to load "C:\Ruby31-x64\msys64\ucrt64/lib/vips-modules-8.13\vips-magick.dll" -- 'C:\Ruby31-x64\msys64\ucrt64/lib/vips-modules-8.13\vips-magick.dll': Das angegebene Modul wurde nicht gefunden.

GModule-CRITICAL **: 06:59:07.248: g_module_make_resident: assertion 'module != NULL' failed

VIPS-WARNING **: 06:59:07.260: unable to load "C:\Ruby31-x64\msys64\ucrt64/lib/vips-modules-8.13\vips-openslide.dll" -- 'C:\Ruby31-x64\msys64\ucrt64/lib/vips-modules-8.13\vips-openslide.dll': Das angegebene Modul wurde nicht gefunden.

GModule-CRITICAL **: 06:59:07.260: g_module_make_resident: assertion 'module != NULL' failed

VIPS-WARNING **: 06:59:07.273: unable to load "C:\Ruby31-x64\msys64\ucrt64/lib/vips-modules-8.13\vips-poppler.dll" -- 'C:\Ruby31-x64\msys64\ucrt64/lib/vips-modules-8.13\vips-poppler.dll': Das angegebene Modul wurde nicht gefunden.

GModule-CRITICAL **: 06:59:07.273: g_module_make_resident: assertion 'module != NULL' failed
Completed 500 Internal Server Error in 2051ms (ActiveRecord: 13.3ms | Allocations: 295138)

however, the files are all there:

if that is important: vips sits at c:\vips-dev:

and i have c:\vips-dev\bin in my path:

any help is highly appreciated.

thanks

[andreas-it-dev]

did some more tests. vips itself works, but fails via ruby

[kleisauke]

I was able to reproduce this, it looks like a packaging issue in MSYS2 where the optional dynamic modules are distributed when you install libvips via pacman with:

$ pacman -S mingw-w64-ucrt-x86_64-libvips

(which is done automatically during gem install ruby-vips, see #332)

But the dependencies of these optional dynamic modules are not installed. To fix this you can do either:

$ pacman -S --asdeps mingw-w64-ucrt-x86_64-libheif mingw-w64-ucrt-x86_64-libjxl mingw-w64-ucrt-x86_64-imagemagick mingw-w64-ucrt-x86_64-openslide mingw-w64-ucrt-x86_64-poppler

Or simply remove (or rename) the directory where these dynamic modules resides (i.e. C:\Ruby31-x64\msys64\ucrt64\lib\vips-modules-8.13).

Note that if you want to use the libvips from https://github.com/libvips/build-win64-mxe, you can do:

$ pacman -Rcns mingw-w64-ucrt-x86_64-libvips

And set the RUBY_DLL_PATH env accordingly (e.g. to C:\vips-dev-8.14\bin).

[jcupitt]

Ah that makes more sense. That PR is probably still useful -- we shouldn't be calling make_resident if module load fails.