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AM437x building .ipk packages in rootfs

Hi,

i build the ti sdk package for am437x-evm using following link (on ubuntu )

i have .ipk packages under --tisdk/build/arago-tmp-external-linaro-toolchain/deploy/ipk/am437x_evm/  , i want build in the filesystem to use. i was using  following command but got error

dpkg install [package_ipk].ipk 

also tried with  dpkg install [package_ipk].ipk  command but it not work

Error:

dpkg: warning: parsing file '/var/lib/dpkg/available' near line 17730 package 'libopencv-aruco3.1':
'am437x_evm' is not a valid architecture name: character `_' not allowed (only letters, digits and characters `-')
dpkg: warning: parsing file '/var/lib/dpkg/tmp.ci/control' near line 9 package 'libopencv-aruco3.1':
'am437x_evm' is not a valid architecture name: character `_' not allowed (only letters, digits and characters `-')
dpkg: error processing archive libopencv-aruco3.1_3.1+git0+f7f004f623-r0.tisdk5_am437x_evm.ipk (--install):
package architecture (am437x_evm) does not match system (amd64)
Errors were encountered while processing:
libopencv-aruco3.1_3.1+git0+f7f004f623-r0.tisdk5_am437x_evm.ipk

please tell me how to build .ipk  packages and how to use it??