I am trying to build a Yocto (warrior) image for the AM335x using
meta-ti and meta-qt5 that will render directly to the GPU. Initially
this will be for the Beaglebone Black but then ultimately will be for a
custom hardware platform.
In broad outline, I think, the software stack needs to look a bit like:
Qt Application
QtBase, QtWebEngine, etc.
Qt-OpenGL
ti-sgx-ddk
AM335x GPU
I have included meta-ti and meta-qt5 into my belayers.conf and added
ti-sgx-ddk-km, ti-sgx-ddk-um, qtbase and qtwebengine to
IMAGE_INSTALL_append. When I try to bitbake core-image-minimal I start
to get a failure to compile ti-sgx-ddk-km with a number of, what appear
to be, warnings of the form:
KBUILD_EXTRA_SYMBOLS=
| grep:
/home/me/Yocto/BeagleBoneBlack/tmp/work-shared/beaglebone/kernel-source/include/linux/amba:
Is a directory
| grep:
/home/me/Yocto/BeagleBoneBlack/tmp/work-shared/beaglebone/kernel-source/include/linux/avf:
Is a directory
It then ultimately appears to give up with:
| ******* Multiarch build: no
| ******* Primary arch: target_armel
| ******* Secondary arch: none
| ../config/core.mk:513: $(KERNELDIR)/vmlinux does not exist. Kbuild may
fail.
| eurasiacon/build/linux2/toplevel.mk:230:
eurasiacon/build/linux2/moduledefs/target_armel.mk: No such file or
directory
Is there a specific kernel I need to define in local.conf that the GPU
drivers build against?
Also, is there any specific configuration I need to do in order to get
Qt to use the SGX OpenGL drivers?
I have had a search on the web but not found anything for recent Yocto
versions, only very old stuff.
-Andy.
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