+dnl CF_VA_COPY version: 2 updated: 2010/03/04 05:37:29
+dnl ----------
+dnl check for va_copy, part of stdarg.h
+dnl Also, workaround for glibc's __va_copy, by checking for both.
+AC_DEFUN([CF_VA_COPY],[
+AC_CACHE_CHECK(for va_copy, cf_cv_have_va_copy,[
+AC_TRY_LINK([
+#include <stdarg.h>
+],[
+ static va_list dst;
+ static va_list src;
+ va_copy(dst, src)],
+ cf_cv_have_va_copy=yes,
+ cf_cv_have_va_copy=no)])
+
+test "$cf_cv_have_va_copy" = yes && AC_DEFINE(HAVE_VA_COPY)
+
+AC_CACHE_CHECK(for __va_copy, cf_cv_have___va_copy,[
+AC_TRY_LINK([
+#include <stdarg.h>
+],[
+ static va_list dst;
+ static va_list src;
+ __va_copy(dst, src)],
+ cf_cv_have___va_copy=yes,
+ cf_cv_have___va_copy=no)])
+
+test "$cf_cv_have___va_copy" = yes && AC_DEFINE(HAVE___VA_COPY)
+])
+dnl ---------------------------------------------------------------------------