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I am trying to compile some personal python libraries to Buildroot for an embedded device. Here is one of my makefiles :

LXML_VERSION = 4.6.3
LXML_SITE = /home/mso-aerosat/Desktop/cecilia_workspace/Buildroot/buildroot-2021.02.7/package/CNES/lxml/lxml
LXML_SITE_METHOD = local
LXML_SETUP_TYPE = setuptools
LXML_DEPENDENCIES = libxml2 libxslt zlib
HOST_LXML_DEPENDENCIES = host-libxml2 host-libxslt host-zlib
LXML_BUILD_OPTS = \
    --xslt-config=$(STAGING_DIR)/usr/bin/xslt-config \
    --xml2-config=$(STAGING_DIR)/usr/bin/xml2-config
HOST_LXML_BUILD_OPTS = \
    --xslt-config=$(HOST_DIR)/bin/xslt-config \
    --xml2-config=$(HOST_DIR)/bin/xml2-config
$(eval $(python-package))
$(eval $(host-python-package))
As you can see, the makefile is almost exactly the default make file for python-lxml. It is also the case for my other libraries. I only changed the source and the method to have buildroot go into my local library.
Here's what I get as an error :
>>>   Executing post-image script board/zynq/post-image.sh
[...]
INFO: vfat(boot.vfat): adding file 'u-boot.img' as 'u-boot.img' ...
INFO: vfat(boot.vfat): cmd: "MTOOLS_SKIP_CHECK=1 mcopy -bsp -i '/home/mso-aerosat/Desktop/cecilia_workspace/Buildroot/buildroot-2021.02.7/output/images/boot.vfat' '/home/mso-aerosat/Desktop/cecilia_workspace/Buildroot/buildroot-2021.02.7/output/images/u-boot.img' '::'" (stderr):
INFO: vfat(boot.vfat): adding file 'devicetree.dtb' as 'devicetree.dtb' ...
INFO: vfat(boot.vfat): cmd: "MTOOLS_SKIP_CHECK=1 mcopy -bsp -i '/home/mso-aerosat/Desktop/cecilia_workspace/Buildroot/buildroot-2021.02.7/output/images/boot.vfat' '/home/mso-aerosat/Desktop/cecilia_workspace/Buildroot/buildroot-2021.02.7/output/images/devicetree.dtb' '::'" (stderr):
INFO: vfat(boot.vfat): adding file 'uImage' as 'uImage' ...
INFO: vfat(boot.vfat): cmd: "MTOOLS_SKIP_CHECK=1 mcopy -bsp -i '/home/mso-aerosat/Desktop/cecilia_workspace/Buildroot/buildroot-2021.02.7/output/images/boot.vfat' '/home/mso-aerosat/Desktop/cecilia_workspace/Buildroot/buildroot-2021.02.7/output/images/uImage' '::'" (stderr):
Disk full
INFO: vfat(boot.vfat): cmd: "rm -f "/home/mso-aerosat/Desktop/cecilia_workspace/Buildroot/buildroot-2021.02.7/output/images/boot.vfat"" (stderr):
ERROR: vfat(boot.vfat): failed to generate boot.vfat
make[1]: *** [Makefile:836: target-post-image] Error 1
make: *** [Makefile:84: _all] Error 2
And finally here is the post-image.sh script :
#!/bin/sh
# By default U-Boot loads DTB from a file named "devicetree.dtb", so
# let's use a symlink with that name that points to the *first*
# devicetree listed in the config.
FIRST_DT=$(sed -n \
           's/^BR2_LINUX_KERNEL_INTREE_DTS_NAME="\([a-z0-9\-]*\).*"$/\1/p' \
           ${BR2_CONFIG})
[ -z "${FIRST_DT}" ] || ln -fs ${FIRST_DT}.dtb ${BINARIES_DIR}/devicetree.dtb
support/scripts/genimage.sh -c board/zynq/genimage.cfg
Here is the link to the source code from github, in case you'd need to see other scripts : https://github.com/buildroot/buildroot/blob/master/board/zynq/post-image.sh
How can I solve the problem ? If I change the menuconfig to not add the libraries, it works without an error. But as soon as I add those, it won't. Any advice please ?
Thank you !
                The problem occurs during the execution of post-image.sh, but you neglect to show that script in your post.
– sawdust
                Dec 21, 2021 at 22:10
        
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