Re: [PATCH] package_rpm.bbclass: fix /etc/rpm/platform generation

[Mark Hatle <mark.hatle@windriver.com>]

On 4/18/13 9:27 AM, Bogdan Marinescu wrote:
> For some platforms (for example emenlow) the RPM installer prefers
> an invalid package architecture (for example i586 over core2) because
> /etc/rpm/platform is not properly generated (for example, i586 is
> listed before core2 in /etc/rpm/platform).
>
> [YOCTO #3864]
>
> Signed-off-by: Bogdan Marinescu <bogdan.a.marinescu@intel.com>
> ---
>   meta/classes/package_rpm.bbclass |    1 -
>   1 file changed, 1 deletion(-)
>
> diff --git a/meta/classes/package_rpm.bbclass b/meta/classes/package_rpm.bbclass
> index 3a29976..1bee4b1 100644
> --- a/meta/classes/package_rpm.bbclass
> +++ b/meta/classes/package_rpm.bbclass
> @@ -276,7 +276,6 @@ package_install_internal_rpm () {
>   		# Setup base system configuration
>   		echo "Note: configuring RPM platform settings"
>   		mkdir -p ${target_rootfs}/etc/rpm/
> -		echo "$INSTALL_PLATFORM_RPM" > ${target_rootfs}/etc/rpm/platform

I think this is wrong.  The /etc/rpm/platform file's first line is supposed to 
be the equivalent of: [uname -m]-vendor-os.   While uname -m doesn't match our 
tune namings, the concept is the same.  The first line simply defines the "tune" 
of the platform, subsequent lines define alternative names that will run on this 
system.

The INSTALL_PLATFORM_RPM value should be the expected value for the platform as 
a whole, as it's the default tune value.  (Default tune value is expected to be 
the most accurate value.

Looking at the defect:

i586-poky-linux
emenlow-.*-linux
core2-.*-linux
i686-.*-linux
i586-.*-linux
i486-.*-linux
i386-.*-linux
x86-.*-linux
noarch-.*-linux.*
any-.*-linux.*
all-.*-linux.*

The default tune value for that machine was set to i586 by "something".

INSTALL_PLATFORM_RPM="$(echo ${TARGET_ARCH} | tr - _)${TARGET_VENDOR}-${TARGET_OS}"

${TARGET_ARCH} is similar to the output of uname -m.  The error is that this 
particular BSP should have returned 'core2' as the TARGET_ARCH from what I can tell.

Default for TARGET_ARCH is: TARGET_ARCH = "${TUNE_ARCH}"

So the TUNE_ARCH is being set to i586.  So the end result is..  Is 'TUNE_ARCH' 
set to i586 appropriate?  It probably is, because the majority of the system 
seems to have a limited set of expected values for TARGET_ARCH.

So, perhaps the right fix is instead of using 'TARGET_ARCH' in 
INSTALL_PLATFORM_RPM, 'TUNE_PKGARCH_${DEFAULTTUNE}' may be more appropriate.

I'd suggest trying that.  (But the first line is the system architecture, 
following lines are alternative packages that are considered compatible.)

>
>   		if [ ! -z "$INSTALL_PLATFORM_EXTRA_RPM" ]; then
>   			for pt in $INSTALL_PLATFORM_EXTRA_RPM ; do
>