[yocto] inconsistent ways of setting IMAGE_FSTYPES

[Robert P. J. Day]

On Mon, 14 Jul 2014, Paul Eggleton wrote:

> On Sunday 13 July 2014 13:44:53 Robert P. J. Day wrote:
> >   not a big deal, but just noticed the various formats for assigning
> > IMAGE_FSTYPES in the meta-yocto layer:
> >
> > $ grep -r IMAGE_FSTYPES *
> > meta-yocto/conf/distro/poky-tiny.conf:IMAGE_FSTYPES = "ext2 cpio.gz"
> > meta-yocto-bsp/conf/machine/edgerouter.conf:IMAGE_FSTYPES ?= "jffs2 tar.bz2"
> > meta-yocto-bsp/conf/machine/beaglebone.conf:IMAGE_FSTYPES += "tar.bz2
> > jffs2" meta-yocto-bsp/conf/machine/mpc8315e-rdb.conf:IMAGE_FSTYPES ?=
> > "jffs2 tar.bz2"
> > scripts/lib/bsp/substrate/target/arch/arm/conf/machine/{{=machine}}.conf:IM
> > AGE_FSTYPES += "tar.bz2 jffs2"
> > scripts/lib/bsp/substrate/target/arch/mips/conf/machine/{{=machine}}.conf:I
> > MAGE_FSTYPES ?= "jffs2 tar.bz2" $
> >
> >   just seems a bit odd for those assignments to be bouncing around
> > between =, += and ?=.
>
> I have to admit I thought we had established quite a long time ago
> in OE history that += was the correct way to set IMAGE_FSTYPES from
> a machine config file, although a quick search didn't turn up the
> thread where we discussed it. We're apparently not consistent with
> that at the moment however.

  i will leave this to someone higher up the evolutionary ladder since
i suspect it's not just a blind, across-the-board textual
substitution. for example, poky-tiny.conf specifically claims:

# By default we only support ext2 and initramfs. We don't build live as that
# pulls in a lot of dependencies for the live image and the installer, like
# udev, grub, etc.  These pull in gettext, which fails to build with wide
# character support.
IMAGE_FSTYPES = "ext2 cpio.gz"

  so someone else can have at this.

rday

-- 

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Robert P. J. Day                                 Ottawa, Ontario, CANADA
                        http://crashcourse.ca

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