[package] qt/5.15.11: Dependency on opengl/system always requires legacy X11 GL interface on Linux

[jwillikers]

Description

When building qt/5.15.11 for Linux, there is a dependency on opengl/system, which requires gl.pc, the X11 GL interface.
Using this package for an embedded system which uses the es2 interface is problematic because the system doesn't provide or need the X11 GL interface, libGL / gl.pc.
I think systems only using Wayland will run into the same problem.

Package and Environment Details

• Package Name/Version: qt/5.15.11
• Operating System+version: Yocto SDK
• Conan version: conan 1.62.0

Conan profile

[settings]
os=Linux
arch=armv7hf
compiler=gcc
compiler.version=7
compiler.libcxx=libstdc++11
[options]
[conf]
[build_requires]
[env]

Steps to reproduce

conan create . "5.15.11@" --build missing --build outdated --update --profile:host yocto/debug --options:host 'qt/*:cross_compile=yocto-linux-gnueabi-' --options:host 'qt/*:device=linux-imx6-g++' --options:host 'qt/*:opengl=es2' --options:host 'qt/*:sysroot=/opt/nxt/sdk/nxt/sysroots/cortexa9hf-neon-yocto-linux-gnueabi' --options:host 'qt/*:with_fontconfig=False' --options:host 'qt/*:with_x11=False' --options:host 'qt/*:shared=True' --options:host 'qt/*:with_md4c=False' --options:host 'qt/*:with_mysql=False' --options:host 'qt/*:with_odbc=False' --options:host 'qt/*:with_openal=False' --options:host 'qt/*:with_pq=False' --options:host 'qt/*:with_sqlite3=False' --options:host 'libxml2/*:iconv=False' --options:host 'libiconv/*:shared=True'

Logs

Click to expand log

ERROR: conanfile.py (project/None): Error in generate() method, line 84
	cmake_deps.generate()
	ConanException: error generating context for 'qt/5.15.13': qt/5.15.13: component 'qtGui' required 'opengl::opengl', but 'opengl' is not a direct dependency