Yocto Kirkstone meta-hailo build failed

General
,
1

hailo-pci 4.18.0 causes errors (4.17.1 works fine)

| ERROR: modpost: module hailo_pci uses symbol dma_buf_detach from namespace DMA_BUF, but does not import it.
| ERROR: modpost: module hailo_pci uses symbol dma_buf_put from namespace DMA_BUF, but does not import it.
| ERROR: modpost: module hailo_pci uses symbol dma_buf_get from namespace DMA_BUF, but does not import it.
| ERROR: modpost: module hailo_pci uses symbol dma_buf_unmap_attachment from namespace DMA_BUF, but does not import it.
| ERROR: modpost: module hailo_pci uses symbol dma_buf_map_attachment from namespace DMA_BUF, but does not import it.
| ERROR: modpost: module hailo_pci uses symbol dma_buf_attach from namespace DMA_BUF, but does not import it.

2

Hi Lori,

To which host are you building this Yocto?

3

Hi yanivb,

my host : Ubuntu 18.04.6 LTS x86_64

4

Hi Lori,

Can I assume this is the host you are building the yocto on?
What is the target processor you will run on? e.g. imx8, rockchip…

5

Hi yanivb,

yes, my target processor is MediaTek Genio 700.

6

Hi Lori,

your yocto is based on kernel 5.15, so as a work around you can modify this file:
tmp/work/genio_700_evk-poky-linux/hailo-pci/4.18.0-r0/git/linux/vdma/memory.c

instead of:
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 16, 0)
// Import DMA_BUF namespace for needed kernels
MODULE_IMPORT_NS(DMA_BUF);
#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(5, 16, 0) */

set:
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 15, 0)
// Import DMA_BUF namespace for needed kernels
MODULE_IMPORT_NS(DMA_BUF);
#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(5, 15, 0) */

In order to maintain a proper yocto code management it is advised to use the relevant yocto tools (e.g. devtool).

7

Hi yanivb,

Thank you for your assistance.

8

Please note that an additional error might occur while building the tappas-apps recipe:
ERROR: Nothing PROVIDES ‘libmedialib-api’ (but /local/users/yanivb/mediatek_kirkstone/iot-yocto/src/meta-hailo/meta-hailo-tappas/recipes-gstreamer/tappas-apps/tappas-apps_3.29.1.bb DEPENDS on or otherwise
requires it)

this issue can also be worked around by commenting the following lines under:
/src/meta-hailo/meta-hailo-tappas/recipes-gstreamer/tappas-apps/tappas-apps_3.29.1.bb

python () {
#    if 'imx8' in d.getVar('MACHINE'):
        d.setVar('REQS_FILE', d.getVar('REQS_IMX8_FILE'))
        d.setVar('ARM_APPS_DIR', d.getVar('IMX8_DIR'))
#    else:
#        d.setVar('REQS_FILE', d.getVar('REQS_HAILO15_FILE'))
#        d.setVar('ARM_APPS_DIR', d.getVar('HAILO15_DIR'))
#        d.appendVar('DEPENDS', " libmedialib-api xtensor")
}