Adding Python and other tools (gcc dtc) to Linux Yocto

- Add the layer with Python to Yocto:

cd poky
bitbake-layers add-layer ../meta-openembedded/meta-python

You should have the following layers (command bitbake show-layers):

layer                 path                       priority
===========================================================
core                  poky/meta      5
yocto                 poky/meta-poky  5
yoctobsp              poky/meta-yocto-bsp  5
openembedded-layer    poky/meta-openembedded/meta-oe  5
meta-python           poky/meta-openembedded/meta-python  5
arm-toolchain         poky/meta-arm/meta-arm-toolchain  5
meta-arm              poky/meta-arm/meta-arm  5
xilinx                poky/meta-xilinx/meta-xilinx-core  5
xilinx-bsp            poky/meta-xilinx/meta-xilinx-bsp  5
xilinx-standalone     poky/meta-xilinx/meta-xilinx-standalone  7
xilinx-tools          poky/meta-xilinx-tools  8
qt5-layer             poky/meta-qt5  7
meta-custom-zybo-z7   poky/meta-custom-zybo-z7  6

• Add the tools to file poky/build/conf/local.conf:

IMAGE_INSTALL:append = " python3-core python3-modules python3-pip python3-setuptools python3-periphery python3-spidev"
IMAGE_INSTALL:append = " spidev-test"

• Rebuild the image:

bitbake core-image-minimal-dev

Add more tools (gcc, dtc and kernel modules) to yocto image:

• Add to file poky/build/conf/local.conf:

IMAGE_INSTALL:append = " kernel-modules kmod"
IMAGE_INSTALL:append = " dtc"
IMAGE_INSTALL:append = " gcc g++ glibc-dev libstdc++-dev make binutils pkgconfig"

• Rebuild the image:

bitbake core-image-minimal-dev