Hello,
I have the the official release from Freescale to use Yocto. I created a sdk cross-toolchain by the command 'bitbake linux-imx -c populate-sdk' then I launched the script in tmp/deploy/sdk. Version of poky used is 1.5.3.
However, I want to use OpenMP in this cross-toolchain.
By default, the option of openMP is disable hence I modified these recipes to comment the "--disable libgomp" :
Then, after creating the sdk cross-toolchain, I have his error
"...i686-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/../../libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.8.1/ld: error: hello uses VFP register arguments, ./libgomp.a(parallel.o) does not
... i686-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/../../libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.8.1/ld: failed to merge target specific data of file ./libgomp.a(parallel.o)"
Indeed, I need to use the option "-mfloat-abi=hard".
How can I do that?
Thank you
Maurice
Solved! Go to Solution.
Hello,
One solution to have OpenMP is to edit the configure file "local.conf" by adding :
CORE_IMAGE_EXTRA_INSTALL += ”libgomp libgomp-dev libgomp-staticdev”
BR
Maurice
Hello,
One solution to have OpenMP is to edit the configure file "local.conf" by adding :
CORE_IMAGE_EXTRA_INSTALL += ”libgomp libgomp-dev libgomp-staticdev”
BR
Maurice
Hi maurice
My opinion that this may be caused by specifics of hard float point
implementation on i.MX6. According to links below
"support for this lib [OpenMP] is only for ARMv7 arch ..only HardFloat can be used"
Also from sect.12.3.2 "Core configuration" IMX6DQRM :
"FPU" is not present, only NEON. This may incur some
implications mentioned in links below
http://openmp.org/forum/viewtopic.php?f=3&t=1255
https://wiki.debian.org/ArmHardFloatPort
For speeding resolution I would suggest to post this
to meta-fsl-arm mailing list, so that our yocto developers
or someone familiar with Yocto/OpenMP integration could try
to assist you.
https://lists.yoctoproject.org/listinfo/meta-freescale
Best regards
chip
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