Re: [PATCH] Use "+=" consistently when setting IMAGE_FSTYPES in Yocto machine conf files.

Bruce Ashfield <bruce.ashfield@...>

On 12-12-13 5:51 PM, Gary Thomas wrote:
On 2012-12-13 14:45, Robert P. J. Day wrote:
On Thu, 13 Dec 2012, David Nyström wrote:


This will lead to these variables beeing append:able but
non-overridable in image layer, as an(un?)intended consequence,
right ?


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-----Original Message-----
From: Robert P. J. Day [rpjday@...]
Received: Thursday, 13 Dec 2012, 20:59
To: Yocto discussion list [yocto@...]
Subject: [yocto] [PATCH] Use "+=" consistently when setting
IMAGE_FSTYPES in Yocto machine conf files.

Signed-off-by: Robert P. J. Day <rpjday@...>


diff --git a/meta-yocto-bsp/conf/machine/atom-pc.conf
index 77dd7fb..fbde1d3 100644
--- a/meta-yocto-bsp/conf/machine/atom-pc.conf
+++ b/meta-yocto-bsp/conf/machine/atom-pc.conf
@@ -25,7 +25,7 @@ XSERVER ?= "xserver-xorg \

MACHINE_EXTRA_RRECOMMENDS = "kernel-modules eee-acpi-scripts"

-IMAGE_FSTYPES ?= "ext3 cpio.gz live"
+IMAGE_FSTYPES += "ext3 cpio.gz live"

APPEND += "usbcore.autosuspend=1"

diff --git a/meta-yocto-bsp/conf/machine/routerstationpro.conf
index e5e4d1a..c7a5ad5 100644
--- a/meta-yocto-bsp/conf/machine/routerstationpro.conf
+++ b/meta-yocto-bsp/conf/machine/routerstationpro.conf
@@ -22,5 +22,5 @@ USE_VT ?= "0"


-IMAGE_FSTYPES ?= "jffs2 tar.bz2"
+IMAGE_FSTYPES += "jffs2 tar.bz2"
please don't top post. and i'll have to take a look at this to see
what the potential problem is here. can anyone else see a potential
issue with this patch?
Yes, as David said, it eliminates the possibility of overriding
the variable. IMO, all of these should be ?= which lets there
be a useful default, but can still be [completely] overridden
by the user.
I'd agree that if we were shooting for consistency, I'd go with
?= and not the +=.



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