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AC_FUNC_MALLOC, AC_FUNC_REALLOC and crossbuilding with mingw

From: David Bruce
Subject: AC_FUNC_MALLOC, AC_FUNC_REALLOC and crossbuilding with mingw
Date: Sat, 29 Dec 2007 15:38:04 -0500
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I cross-build my native linux program for Windows using mingw.  I recently ran 
autoscan to see if my was lacking anything that ought to be in 
there, and the recommendations included adding AC_FUNC_MALLOC and 
AC_FUNC_REALLOC.  These macros cause the cross-build to fail with errors 
about "undefined reference to _rpl_malloc", etc.  The autoconf manual says 
that the macros are supposed to enforce compatibility with GNU's malloc in 
that 'malloc(0)' should return a valid pointer, and suggests a sort of 
wrapper to accomplish this.

My question is whether I can safely comment out AC_FUNC_MALLOC and 
AC_FUNC_REALLOC, because the program seems to build and run fine on both 
platforms without these checks.


David Bruce

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