On Wed, Nov 27, 2019 at 10:12:13PM +1100, JH wrote:

Hi,

Does the Yocto rootfs image size is based on real contents included in
the image-rootfs.tar.gz?

When I build the image with very large size of applications and
libraries such as boost, I have my image-rootfs.tr.gz about 44 MB,
then I removed all large size of applications and libraries, I changed
IMAGE_ROOTFS_SIZE to a small size IMAGE_ROOTFS_SIZE = 20000, I thought
the image-rootfs.tar.gz should be reduced to a small size, but it is
still 43 MB I don't believe it is that big, which variable I should
use to reduce the image size?

tar.gz ist a content-based format, not a filesystem based one. So if the
tarball is that big, then you certainly have all those things in your
rootfs. Look at the manifest files to find out that goes in there, and
use buildhistory to find out the sizes of the things.

Greetz

--
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Josef Holzmayr
Software Developer Embedded Systems

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_____________________________________________________________
Amtsgericht Ingolstadt - GmbH: HRB 191328 - KG: HRA 170363
Geschäftsführer: Dr.-Ing. Michael Sorg, Dipl.-Ing. Franz Sorg
USt-IdNr.: DE 128592548