I guess this is due to the following lines in debian/rules:
gles2_architectures := armel armhf arm64
ifeq ($(DEB_HOST_ARCH),$(findstring $(DEB_HOST_ARCH), $(gles2_architectures)))
extra_configure_opts += -opengl es2
else
extra_configure_opts += -opengl desktop
endif
Still my question is why those architectures (should) differ from the
regular ones. And why Ubuntu is behaving differently than Debian.
In my case I need access to qopenglext.h contents which does not get
loaded if OpenGL ES2 support is present.
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https://bugs.launchpad.net/bugs/1811678
Title:
Inconsistent OpenGL support across architectures
Status in qtbase-opensource-src package in Ubuntu:
New
Bug description:
Hello,
today I noticed build failures of v4l-utils on arm64 hosts:
https://launchpadlibrarian.net/406083796/buildlog_ubuntu-bionic-arm64.v4l-utils_1.17.1-201901131615~ubuntu18.04.1_BUILDING.txt.gz
This is due to the OpenGLES2 feature is enabled on arm64 (but this
feature is not enabled for amd64):
> /usr/include/x86_64-linux-gnu/qt5/QtGui# grep -i opengl qtgui-config.h
> #define QT_FEATURE_opengles2 -1
> #define QT_FEATURE_opengl 1
> #define QT_FEATURE_opengles3 -1
> #define QT_FEATURE_opengles31 -1
vs:
> /usr/include/aarch64-linux-gnu/qt5/QtGui$ grep -i opengl qtgui-config.h
> #define QT_FEATURE_opengles2 1
> #define QT_OPENGL_ES true
> #define QT_OPENGL_ES_2 true
> #define QT_FEATURE_opengl 1
> #define QT_FEATURE_opengles3 1
> #define QT_OPENGL_ES_3 true
> #define QT_FEATURE_opengles31 1
> #define QT_OPENGL_ES_3_1 true
Is the inconsistent feature setting intentional? The Debian Qt
packages seem to select Desktop OpenGL across architectures.
Thanks,
Gregor
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