Re: [PATCH 1/2] Prevent zconf.gperf from throwing an error on OSX

[Gmail <eratos2000 at gmail dot com>]

+1

Sent from my iPhone

> On Oct 16, 2014, at 11:30 AM, Bryan Hundven <bryanhundven@gmail.com> wrote:
> 
> Jason,
> 
>> On Thu, Oct 16, 2014 at 9:27 AM, Jason T. Masker <jason@masker.net> wrote:
>> Updated zconf.gperf patch to be conditional.
>> 
>> The problem is when compiling with clang/LLVM, so not necessarily
>> specific to OS X. Offsetof is part of C99 and defined in stddef.h, but
>> is builtin with gcc. This code will check for a definition and try
>> including stddef.h if it is not found. As a last resort, offsetof will
>> be defined.
>> 
>> 
>> diff --git a/kconfig/zconf.gperf b/kconfig/zconf.gperf
>> index c9e690e..d758a2a 100644
>> --- a/kconfig/zconf.gperf
>> +++ b/kconfig/zconf.gperf
>> @@ -7,6 +7,15 @@
>> %pic
>> %struct-type
>> 
>> +%{
>> +# ifndef offsetof
>> +#  include <stddef.h>
>> +#  ifndef offsetof
>> +#   define offsetof(st, m) ((size_t)(&((st *)0)->m))
>> +#  endif
>> +# endif
>> +%}
>> +
>> struct kconf_id;
>> 
>> static struct kconf_id *kconf_id_lookup(register const char *str,
>> register unsigned int len);
>> 
>> --
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>> 
> 
> I 100% agree with this patch! A newer version of gperf does make the
> issue go away, it is however a good goal to not have to install
> homebrew to install a newer version of gperf (I've complained about
> this in the past), so...
> 
> Signed-off-by: Bryan Hundven <bryanhundven@gmail.com>
> 
> --
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> 

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