main()
~~~~ ^^
File "D:\Dev\Projects\gstreamer\subprojects\glib-2.82.4\tools/grab-gio-dll-paths.py", line 33, in main
raise ValueError("%s is not a valid build path" % build_path)
ValueError: D:\Dev\Projects\gstreamer\buildDir\subprojects\glib-2.82.4 is not a valid build path
subprojects\glib-2.82.4\girepository\introspection\meson.build:35:26: ERROR: Command `"C:\Program Files\Meson\meson.exe" runpython D:\Dev\Projects\gstreamer\subprojects\glib-2.82.4\tools/grab-gio-dll-paths.py --build-path=D:\Dev\Projects\gstreamer\buildDir\subprojects\glib-2.82.4` failed with status 2.
```
I have no problem building it on Linux or Android though.
---
### Author:  [@JuzioMiecio520](https://discourse.gstreamer.org/u/JuzioMiecio520)
#### Post date: [October 24, 2025, 4:04pm UTC](https://discourse.gstreamer.org/t/unable-to-build-gstreamer-using-meson-on-windows/4454/2 "2025-10-24T16:04:08Z")
Bump, has anyone been able to resolve this?
---
### Author:  [@tjwilli58](https://discourse.gstreamer.org/u/tjwilli58)
#### Post date: [October 24, 2025, 7:30pm UTC](https://discourse.gstreamer.org/t/unable-to-build-gstreamer-using-meson-on-windows/4454/3 "2025-10-24T19:30:46Z")
No expert here. I haven’t been able to fully build gstreamer with meson myself if I want `gst-python` built. (See [Error: libvpx build failed · Issue #1655 · wingtk/gvsbuild · GitHub](https://github.com/wingtk/gvsbuild/issues/1655))
Have you tried installing meson with pip yet? `pip install meson`
---
### Author:  [@tjwilli58](https://discourse.gstreamer.org/u/tjwilli58)
#### Post date: [October 24, 2025, 7:34pm UTC](https://discourse.gstreamer.org/t/unable-to-build-gstreamer-using-meson-on-windows/4454/4 "2025-10-24T19:34:14Z")
I meant to attach this link:
> **[gst-python: building v1.26 pygobject, gst-python test fail with 'GObject',...](https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/4699)**
>
> Describe your issue Trying to build gstreamer 1.26 using meson. Switches used:
---
### Author:  [@tjwilli58](https://discourse.gstreamer.org/u/tjwilli58)
#### Post date: [October 24, 2025, 7:46pm UTC](https://discourse.gstreamer.org/t/unable-to-build-gstreamer-using-meson-on-windows/4454/5 "2025-10-24T19:46:27Z")
Again, no expert here by any means, but at
[Getting Meson](https://mesonbuild.com/Getting-meson.html#installing-meson-and-ninja-with-the-msi-installer)
there is this line:
```auto
Please note that this is a new feature, so bug reports are expected and welcome!
```
---
### Author:  [@JuzioMiecio520](https://discourse.gstreamer.org/u/JuzioMiecio520)
#### Post date: [October 24, 2025, 8:15pm UTC](https://discourse.gstreamer.org/t/unable-to-build-gstreamer-using-meson-on-windows/4454/6 "2025-10-24T20:15:10Z")
Oh right, did not notice that. Unfortunately, after removing Meson installed via MSI and reinstalling via pip, the same issue occurs.
Side note, that error is getting thrown by `glib/introspection`. I tried compiling only the `gstreamer-sharp` subproject and got another error (see below), but also related to introspection. Perhaps it’s more of a global issue with this module?
```auto
subprojects\\gtk-sharp\\Source\\tests\\generator\\regress\\meson.build:64:20: ERROR: Dependency ‘gobject-introspection-1.0’ tool variable ‘g_ir_scanner’ contains erroneous value: ‘C:/Program\\ Files/gstreamer/1.0/msvc_x86_64/bin/g-ir-scanner’
This is a distributor issue – please report it to your gobject-introspection-1.0 provider.
```
The file this error is referencing also does not seem to exist? Even though I chose the “complete” gstreamer installation
---
### Author:  [@tjwilli58](https://discourse.gstreamer.org/u/tjwilli58)
#### Post date: [October 24, 2025, 9:42pm UTC](https://discourse.gstreamer.org/t/unable-to-build-gstreamer-using-meson-on-windows/4454/7 "2025-10-24T21:42:01Z")
Years ago, when I first started trying to build gstreamer, I always got stuck when it came to gobject-introspection. I finally found [gvsbuild](https://github.com/wingtk/gvsbuild). I don’t remember how I stumbled on it, but I’ve found it to be easier to build than using the gstreamer directions. It also uses meson.
I still want to be able to build it from the gstreamer instructions, and I think I finally have it. I need to have gst-python, and that needs gobject-introspection, so you may want to try using `Dintrospection=enabled` in your setup. Something like:
`meson setup -Dintrospection=enabled build_dir`
---
### Author:  [@tjwilli58](https://discourse.gstreamer.org/u/tjwilli58)
#### Post date: [October 24, 2025, 9:45pm UTC](https://discourse.gstreamer.org/t/unable-to-build-gstreamer-using-meson-on-windows/4454/8 "2025-10-24T21:45:04Z")
> [@JuzioMiecio520](#):
>
> The file this error is referencing also does not seem to exist? Even though I chose the “complete” gstreamer installation
I thought you were trying to build this from source?
---
### Author:  [@JuzioMiecio520](https://discourse.gstreamer.org/u/JuzioMiecio520)
#### Post date: [October 25, 2025, 9:02am UTC](https://discourse.gstreamer.org/t/unable-to-build-gstreamer-using-meson-on-windows/4454/9 "2025-10-25T09:02:46Z")
Okay, got it working:
1. If you read the `grab-gio-dll-paths.py` script on line 33 it wants the glib path to have a subfolder `meson-uninstalled`, but since it does not exist, just create it manually
2. If you already have gstreamer installed anywhere else, remove it’s environment variables
3. pip install `setuptools` if you do not have them yet
4. meson now prepares project correctly
When running ninja remember to run it in MSVC console OR add MSVC vars manually by running the `vcvarsall.bat` file located in `C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Auxiliary\Build`
Right now I am just running into some weird issues with linking against gstreamer built by me. Specifically, I either get an error when creating an element ( `gst_element_factory_create` returns false) or a very weird GLib error (something about `assert is_g_object failed`)