Hello,
On Mon, Jun 27, 2005 at 12:30:53PM +0200, Hrvoje Niksic wrote:
> A tester tells me that the alloca declaration from the latest (CVS)
> Autoconf manual, now installed in Wget, warns about symbol
> redeclaration on MinGW:
>
> #if HAVE_ALLOCA_H
> # include <alloca.h>
> #elif defined __GNUC__
> # define alloca __builtin_alloca
>
> The problem is that MinGW is using GNU C, but also #defines alloca to
> __builtin_alloca in malloc.h, presumably to be compatible with MS VC.
what about the following patch?
Stepan
2005-06-27 Stepan Kasal <[EMAIL PROTECTED]>
* doc/autoconf.texi (Particular Functions) <AC_FUNC_ALLOCA>:
With GNU C, define alloca only if it wasn't defined yet.
Index: doc/autoconf.texi
===================================================================
RCS file: /cvsroot/autoconf/autoconf/doc/autoconf.texi,v
retrieving revision 1.918
diff -u -r1.918 autoconf.texi
--- doc/autoconf.texi 24 Jun 2005 00:54:01 -0000 1.918
+++ doc/autoconf.texi 27 Jun 2005 11:14:48 -0000
@@ -4021,7 +4021,9 @@
#if HAVE_ALLOCA_H
# include <alloca.h>
#elif defined __GNUC__
-# define alloca __builtin_alloca
+# ifndef alloca
+# define alloca __builtin_alloca
+# endif
#elif defined _AIX
# define alloca __alloca
#elif defined _MSC_VER
