Re: [kvm-unit-tests PATCH 1/6] libcflat: add PRI(dux)32 format types

["Alex Bennée" <alex.bennee@linaro.org>]

Paolo Bonzini <pbonzini@redhat.com> writes:

> On 12/01/2017 18:18, Alex Bennée wrote:
>>> Although I feel there should be a compiler macro way to do this without
>>> a need for configure/makefile trickery at all...
>>
>> I did ask our toolchain bods. They started going on about potential
>> solutions using _Generic but I fear that might be worse in this case!
>
> I don't think _Generic can do string concatenation, can it?
>
> inttypes.h is not part of the set of freestanding headers, only stdint.h
> is.  Who is providing stdint.h in your case?

/usr/lib/gcc/arm-none-eabi/5.4.1/include/stdint.h

is part of the compiler package although it can just include the lib
stdint.h if it is there:

  #ifndef _GCC_WRAP_STDINT_H
  #if __STDC_HOSTED__
  # if defined __cplusplus && __cplusplus >= 201103L
  #  undef __STDC_LIMIT_MACROS
  #  define __STDC_LIMIT_MACROS
  #  undef __STDC_CONSTANT_MACROS
  #  define __STDC_CONSTANT_MACROS
  # endif
  # include_next <stdint.h>
  #else
  # include "stdint-gcc.h"
  #endif
  #define _GCC_WRAP_STDINT_H
  #endif

So using inttypes we would get:

>arm-none-eabi-gcc ./test.c -E | grep typedef | grep uint32
typedef long unsigned int __uint32_t;
typedef __uint32_t uint32_t ;


--
Alex Bennée
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