[ARM-FDPIC 00/12] FDPIC ABI for ARM

[Joseph Myers]

On Thu, 22 Mar 2018, Christophe Lyon wrote:

> On ARM, the FDPIC register is r9 [3], and the intended target name is
> arm-linux-uclibceabi, although arm-linux-gnueabi works too. Note that

arm-*-linux-uclibceabi already means normal non-FDPIC Linux with uClibc 
(that is, with uClibc by default; -mglibc and -muclibc can be used to 
select a multilib with different libc from the default one in a toolchain 
built with such multilibs).

> arm-uclinux exists, but uses another ABI and the BFLAT file format; it
> does not support code sharing.

But -uclinux* targets are the appropriate ones for MMU-less 
configurations.  It's possible you need a new variant such as 
arm-*-uclinuxfdpiceabi.

-- 
Joseph S. Myers
joseph@codesourcery.com