How to install OpenGL in Yocto to resolve "No GL implementation is available" error

Question

I'm encountering an issue when running an application on my Yocto-based system, and I'm getting the error message: Failed to start Flutter renderer: No GL implementation is available. Additionally, when I check the existence of the 'gtk+-3.0' package using pkg-config, it shows that the 'gl' package is not found in the search path and suggests adding the directory containing 'gl.pc' to the PKG_CONFIG_PATH environment variable.

root@apalis-imx8-07013820:/usr/lib/pkgconfig# pkg-config --exists --print-errors 'gtk+-3.0' Package gl was not found in the pkg-config search path. Perhaps you should add the directory containing `gl.pc' to the PKG_CONFIG_PATH environment variable Package 'gl', required by 'epoxy', not found

I have already added the 'mesa' package to my local.conf, but it seems that 'gl.pc' is not present in the '/usr/lib/pkgconfig' directory. When I open the 'epoxy.pc' file, it shows the following content:

prefix=/usr libdir=${prefix}/lib includedir=${prefix}/include epoxy_has_glx=1 epoxy_has_egl=1 epoxy_has_wgl=0 Name: epoxy Description: GL dispatch library Version: 1.5.10 Requires.private: x11, egl, gl egl Libs: -L${libdir} -lepoxy Libs.private: -ldl Cflags: -I${includedir}

I would appreciate any guidance on how to properly install OpenGL or resolve the No GL implementation is available"error in Yocto. Additionally, I'd like to know how to ensure that 'gl.pc' is available in the '/usr/lib/pkgconfig' directory. Thank you for your help!

Tried to install OpenGL in Yocto. Expected success, got "No GL implementation" error.

Talel BELHAJSALEM · Accepted Answer · 2023-10-17 15:36:33Z

0

You asked two questions here, one for No GL implementation.. and one for Package gl not found ....

If you assume that the presence of gl.pc will solve the first question, then:

/usr/lib/pkgconfig/gl.pc is provided by libgl-mesa-dev.

Check:

oe-pkgdata-util find-path /usr/lib/pkgdata/gl.pc

If you just want gl.pc in your image, just add that package:

IMAGE_INSTALL:append = " libgl-mesa-dev"

answered Oct 17, 2023 at 15:36

Talel BELHAJSALEM

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4 Comments

Victor Gubin Over a year ago

This is going to be software OpenGL without GPU usage, Check community.nxp.com/t5/i-MX-Processors/…

Hareendran MG Over a year ago

Hi @talel-belhadjsalem, And when i add the libgl-mesa-dev package, i got the gl.pc. But the issue still persist when running the application. ` (sample:3249): Gdk-CRITICAL **: 06:27:15.210: gdk_window_get_state: assertion 'GDK_IS_WINDOW (window)' failed ** (sample:3249): WARNING **: 06:27:15.221: Failed to start Flutter renderer: No GL implementation is available ` I create a sample gtk3 application in c and i got it worked without any issue.

Talel BELHAJSALEM Over a year ago

I answered that because it is mentioned in your question. I also mentioned that it is not assumed to fix the No GL issue. If this helped you mark it as solution, or I will try to check the other part of question for you.

Hareendran MG Over a year ago

Hi @TalelBELHADJSALEM , Please help to check the 'No GL implementation' error.

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