[Buildroot] [PATCH 1/1] [1/1] package/uclibc: Enable compile in thumb mode when selected

[Arnout Vandecappelle]

 Hi penman,

On 04-12-15 23:56, penman wrote:
> Signed-off-by: penman <paul.enman at gmail.com>

 Please use your full real name in the Sob (I guess that's Paul Enman).

> ---
>  package/uclibc/uclibc.mk | 13 ++++++++++---
>  1 file changed, 10 insertions(+), 3 deletions(-)
> 
> diff --git a/package/uclibc/uclibc.mk b/package/uclibc/uclibc.mk
> index c62a40f..4f5c605 100644
> --- a/package/uclibc/uclibc.mk
> +++ b/package/uclibc/uclibc.mk
> @@ -86,9 +86,15 @@ define UCLIBC_ARM_ABI_CONFIG
>  	$(call KCONFIG_ENABLE_OPT,CONFIG_ARM_EABI,$(@D)/.config)
>  endef
>  
> -# Thumb build is broken with threads, build in ARM mode

 Can you explain what changed in the last two years since this fix was
introduced in commit d244782ca? It might have been fixed in -ng, but 0.9.33.2
hasn't changed in a very long time so I guess it's still broken there. You'll
need to add a condition on -NG.

 Or it could be gcc that has been fixed, but in that case please verify that it
works with gcc-4.7

 Regards,
 Arnout

> -ifeq ($(BR2_ARM_INSTRUCTIONS_THUMB)$(BR2_TOOLCHAIN_HAS_THREADS),yy)
> -UCLIBC_EXTRA_CFLAGS += -marm
> +ifeq ($(BR2_ARM_INSTRUCTIONS_THUMB)$(BR2_ARM_INSTRUCTIONS_THUMB2),y)
> +define UCLIBC_ARM_THUMB_CONFIG
> +	$(call KCONFIG_ENABLE_OPT,COMPILE_IN_THUMB_MODE,$(@D)/.config)
> +	$(call KCONFIG_DISABLE_OPT,UCLIBC_HAS_CONTEXT_FUNCS,$(@D)/.config)
> +endef
> +else
> +define UCLIBC_ARM_THUMB_CONFIG
> +	$(call KCONFIG_DISABLE_OPT,COMPILE_IN_THUMB_MODE,$(@D)/.config)
> +endef
>  endif
>  
>  ifeq ($(BR2_UCLIBC_ARM_BX),y)
> @@ -373,6 +379,7 @@ define UCLIBC_KCONFIG_FIXUP_CMDS
>  	$(UCLIBC_ARC_TYPE_CONFIG)
>  	$(UCLIBC_ARC_PAGE_SIZE_CONFIG)
>  	$(UCLIBC_ARM_ABI_CONFIG)
> +	$(UCLIBC_ARM_THUMB_CONFIG)
>  	$(UCLIBC_ARM_BX_CONFIG)
>  	$(UCLIBC_MIPS_ABI_CONFIG)
>  	$(UCLIBC_MIPS_ISA_CONFIG)
> 


-- 
Arnout Vandecappelle                          arnout at mind be
Senior Embedded Software Architect            +32-16-286500
Essensium/Mind                                http://www.mind.be
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