[yocto] Can't set march=armv5te

[Martin Jansa]

Using and not using thumb was also controlled not only by TUNE_FEATURES
(MACHINE defines that) but also by ARM_INSTRUCTION_SET (DISTRO defines
that).

So you weren't building with thumb enabled even when you were seeing
armv5te before.

On Thu, Dec 1, 2016 at 5:26 PM, Bryan Evenson <bevenson at melinkcorp.com>
wrote:

> I'm in the process of upgrading from the dizzy branch to the fido branch,
> and I'm still a little confused about some tune changes that I'm seeing.
> I'm using an Atmel AT91SAM9G25 processor.  The meta-atmel layer that I am
> using had incorrectly set DEFAULTTUNE = "arm926ejs" which had been setting
> the architecture to "arm926ejste".  They fixed that here:
> https://github.com/linux4sam/meta-atmel/commit/
> 47238062c04ca97c2ea0570576072ad5b46ce261 and according to the commit
> message it should now be building with DEFAULTTUNE (and the resulting
> architecture) set to "armv5te".  However, when I build using my autobuilder
> I am getting an architecture of "armv5e".  From my understanding, this
> means the compiler thinks the processor does not have Thumb support.  I've
> tried "arm926ejs" and "armv5te" for DEFAULTTUNE settings and it hasn't made
> any difference.
>
> I've checked the working directories for a few packages, and previously
> the relevant gcc options were being set to: "-march=armv5te -marm
> -mthumb-interwork -mtune=arm926ej-s".  Now they are being set to:
> "-march=armv5e -marm  -mthumb-interwork".  How do I get it back to building
> with march=armv5te?
>
> Here is the autobuilder configuration that I am using:
>
> [nightly-atmel-demo-fido]
> builders: 'builder1'
> repos: [{'poky':
>             {'repourl':'git://git.yoctoproject.org/poky',
>                  'layerversion':{'core':'meta',
> 'yoctobsp':'meta-yocto-bsp', 'yocto':'meta-yocto', 'poky':'meta-poky'},
>              'branch':'fido'}},
>         {'meta-atmel':
>             {'repourl':'git://github.com/linux4sam/meta-atmel.git',
>              'branch':'fido'}},
>         {'meta-openembedded':
>             {'autoinclude':False, 'repourl':'git://git.
> openembedded.org/meta-openembedded',
>              'branch':'fido'}},
>         {'meta-qt5':
>             {'repourl':'git://github.com/meta-qt5/meta-qt5.git',
>              'branch':'fido'}}]
> steps: [{'SetDest':{}},
>         {'CheckOutLayers': {}},
>         {'RunPreamble': {}},
>         {'GetDistroVersion' : {'distro': 'poky'}},
>         {'CreateAutoConf': {'machine': 'at91sam9x5ek', 'SDKMACHINE':
> 'i686', 'distro': 'poky-atmel', 'buildhistory': True, 'packages': 'ipk',
> 'atextappend': 'EXTRA_IMAGE_FEATURES = ""\nDEFAULTTUNE = "armv5te"\n'}},
>         {'CreateBBLayersConf': {'buildprovider' : 'yocto', 'layerdirs':
>             ['meta-atmel', 'meta-qt5', 'meta-openembedded/meta-oe',
> 'meta-openembedded/meta-networking', 'meta-openembedded/meta-python']}},
>         {'BuildImages': {'images': 'atmel-demo-image'}},
>         {'SyncPersistDB' : {'commit' : True, 'distro':'poky'}},
>         {'PublishLayerTarballs':{}},
>         {'PublishArtifacts': {'artifacts': ['at91sam9x5ek', 'ipk']}}]
> scheduler: [{'nightly-scheduler-atmel-fido' :
>                 {'type':'Nightly',
>                  'hour':'1',
>                  'minute':'15',}}]
>
> The resulting build configuration:
> Build Configuration:
> BB_VERSION        = "1.26.0"
> BUILD_SYS         = "x86_64-linux"
> NATIVELSBSTRING   = "Ubuntu-12.04"
> TARGET_SYS        = "arm-poky-linux-gnueabi"
> MACHINE           = "at91sam9x5ek"
> DISTRO            = "poky-atmel"
> DISTRO_VERSION    = "1.8.2"
> TUNE_FEATURES     = "arm armv5 thumb dsp"
> TARGET_FPU        = "soft"
> meta
> meta-yocto
> meta-yocto-bsp    = "fido:c9f0a99050ec0050f0dbcd55d0cd2ab18848113f"
> meta-atmel        = "fido:dd595e6e8ec7010cf646a9ca356b2e01f10e274c"
> meta-qt5          = "fido:90919b9d86988e7da01fa2c0a07246b5b5600a5d"
> meta-oe
> meta-networking
> meta-python       = "fido:902964a4da26e46018d2a8d17dcdda1ac4627a39"
>
> TUNE_FEATURES includes "thumb", but the compiler options aren't set for
> armv5te.  I've tried changing the DEFAULTTUNE specification in
> CreateAutoConf to "arm926ejs" and I've had the same results.  How do I get
> the architecture set back correctly for the processor I'm using?
>
> Thanks,
> Bryan Evenson
> --
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