Hi Linaro-toolchain team,
I notice that the Linaro toolchain binary only support hard-float. We have a
platform which is ARMv7 based does not support VFP.
Could you generate toolchain binary for ARmv7 that allows soft-float?
Thanks,
Joel
___
Hi Joel,
Please refer to:
https://wiki.linaro.org/WorkingGroups/ToolChain/FAQ#How_do_I_use_Linaro.27s_arm-linux-gnueabihf-gcc_from_the_latest_binary_toolchain_release_to_build_applications_for_soft_float_systems.2C_i.e._with_-mfloat-abi.3Dsoft.3F
Thanks!
On Fri, Aug 1, 2014 at 1:32 AM, Joel
Victor,
From the wiki, it mentions that the soft float (multilib) configuration
supported is armv4t.
If we build our own toolchain for soft-float support based on linaro gcc
source, is it just a modification of toolchain configuration? Or it need heavy
patch for thing like eglibc?
Thank you
Joel,
Although possibly not fully optimized, soft float configuration for armv4t
should still run on armv7.
To build your own, I think you'll have to patch the gcc source code to
enable multilib (disabled by default) and build the C library twice and
figure out a way to combine them. Not exactly
Victor,
Yes, the little endian tool chain support armv4t soft float.
[joelz@git-rtp-01] $ arm-linux-gnueabihf-gcc --print-multi-lib
.;
arm-linux-gnueabi;@marm@march=armv4t@mfloat-abi=soft
But there is not armv4 support on armeb big endian toolchain.
[joelz@ldt-joelz] $ arm-linux-gnueabihf-gcc
Hi guy,
In order to have soft-float support in toolchain, I tried to build our
toolchain using Linaro ct-ng script.
I used linaro-armeb-linux-gnueabihf configuration then change floating point
option from hard to soft.
There is the error I have:
[ERROR]
