Re: [Discuss-gnuradio] Re: [Commit-gnuradio] r10410 -gnuradio/trunk/gnuradio-core/src/lib/missing

[Michael Dickens]

On Feb 10, 2009, at 10:11 AM, Don Ward wrote:
> Oops, this is my mistake. I should have seen that valloc() is  
> supposed to be in <stdlib.h> (but isn't there in Cygwin).  Thanks  
> for fixing this.
>
> I'm worried, though, that valloc isn't available at all on MinGW.   
> Is there another way to accomplish what is needed?


The standard way of dealing with most #include's is to have AC check  
them in configure.ac to see if they exist (e.g.,  
"AC_CHECK_HEADERS(malloc.h malloc/malloc.h stdlib.h)") then #ifdef  
around the #include to make it safe (e.g.:

#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif

). With enough of these, one can usually find the correct header files  
and routines for a given OS.  If more than a few of these are required  
to find a given header / routine, then the user's code will generally  
be cleaner if all of this is moved to a common local header file which  
is then #include'd (e.g., as done for the posix_memalign () function).

Do you know what MinGW requires to get posix_memalign.cc to compile  
and be usable? - MLD