Re: cross-compilation guesses (5)

[Eric Blake]

On 05/01/2012 03:41 PM, Bruno Haible wrote:
> Configure outputs when cross-compiling:
> 
>   checking for GNU libc compatible malloc... no
>   checking for GNU libc compatible realloc... no
> 
> Here's a proposed patch for improving the guess for glibc targets.
> Again, the question is whether to modify the macro in Autoconf proper.
> 
> 
> 2012-05-01  Bruno Haible  <address@hidden>
> 
>       *alloc-gnu, eealloc: Avoid "guessing no" when cross-compiling to glibc.
>       * m4/malloc.m4 (_gl_FUNC_MALLOC_IF): New macro.
>       (gl_FUNC_MALLOC_GNU): Invoke it instead of _AC_FUNC_MALLOC_IF.
>       * m4/realloc.m4 (_gl_FUNC_REALLOC_IF): New macro.
>       (gl_FUNC_REALLOC_GNU): Invoke it instead of _AC_FUNC_REALLOC_IF.
>       * m4/calloc.m4 (_AC_FUNC_CALLOC_IF): Require AC_CANONICAL_HOST. When
>       cross-compiling, choose the first alternative on glibc systems.
>       * m4/eealloc.m4 (gl_EEMALLOC): Require AC_CANONICAL_HOST. When
>       cross-compiling, set gl_cv_func_malloc_0_nonnull to 1 on glibc systems.
>       (gl_EEREALLOC): Require AC_CANONICAL_HOST. When cross-compiling, set
>       gl_cv_func_realloc_0_nonnull to 1 on glibc systems.

Can we add other known-good systems, like Cygwin?  But that can be an
incremental improvement in a later patch.

-- 
Eric Blake   address@hidden    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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