[Buildroot] [PATCH] package/Makefile.in: remove BR2_TARGET_OPTIMIZATION from TARGET_CFLAGS
Arnout Vandecappelle
arnout at mind.be
Wed Oct 21 19:28:26 UTC 2015
On 21-10-15 20:28, Yann E. MORIN wrote:
[snip]
> However, I noticed a potential bug in the toolchain-wrapper makefile.
> Here's how we currently define BR_ADDITIONAL_CFLAGS:
>
> -DBR_ADDITIONAL_CFLAGS='$(foreach f,$(call qstrip,$(BR2_TARGET_OPTIMIZATION)),"$(f)",)'
>
> Notice the last comma in there? We want to have that comma in the
> resulting expansion, so that we transform the option string:
>
> -mfoo -mbar -buz
>
> into:
>
> "-mfoo", "-mbar", "-mbuz",
>
> so that it can be used ina C array definition:
>
> static char *predef_args[] = {
> [...]
> #ifdef BR_ADDITIONAL_CFLAGS
> BR_ADDITIONAL_CFLAGS
> #endif
> }
>
> However, in Makefile function calls, the comma is used to separate the
> arguments passed to the function.
>
> Even though $(foreach ...) only accepts three arguments, and the last
> comma in fact correctly ends up in the expanded string, it would be
> much safer to use $(comma) instead, like we would have to do in a call
> to any other function.
Sure thing. Care to cook a patch?
Regards,
Arnout
[snip]
--
Arnout Vandecappelle arnout at mind be
Senior Embedded Software Architect +32-16-286500
Essensium/Mind http://www.mind.be
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