[Buildroot] [PATCH v2] package/uclibc: Enable compile in thumb mode configuration option

[Arnout Vandecappelle <arnout@mind.be>]

 Hi Paul,

 [Please don't top-post, but reply inline like I do below.]

On 18-12-15 01:11, Paul Enman wrote:
> Hi All,
> Thanks for your feedback and insight. Buildroot does build a working Cortex-M
> (thumb instructions only) uClibc toolchain by touching up the uClibc(-ng) config
> file with
> 
> Enable COMPILE_IN_THUMB_MODE
> and
> Disable UCLIBC_HAS_CONTEXT_FUNCS
> 
> ARMv5 and thumb1 targets shouldn't be effected by this patch; I'll look into
> guarding packages that depend on (obsolescent?) context control functions and
> prepare an updated version for review.

 It will be quite hard to find such packages - especially longer term. There
probably should be a thumb2 toolchain added to the autobuilders to cover this case.

 Also, finding a good explanation for the comment is going to be difficult...
Something like "foo needs ARM instructions or a (e)glibc or musl toolchain".


 Regards,
 Arnout


> The toolchain compiles a bootable kernel and both Linuxthreads and NPTL build
> without error, however I am looking into why flthdr shows busybox bFLT flags are
> set to 0x2 (Has-PIC-GOT).

[snip]


-- 
Arnout Vandecappelle                          arnout at mind be
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