-#if defined (__GNU_LIBRARY__) || defined (HAVE_STDLIB_H)
-/* Some stdlib.h (e.g., Solaris 2.7) declare putenv with a non-const argument.
- Since that would conflict with the declaration below, we rename putenv in
- that incompatible prototype. */
-# define putenv vendor_putenv_prototype
-# include <stdlib.h>
-# undef putenv
-#endif
+/* Include errno.h *after* sys/types.h to work around header problems
+ on AIX 3.2.5. */
+#include <errno.h>
+
+/* Don't include stdlib.h because some (e.g., Solaris 2.7) declare putenv
+ with a non-const argument. That would conflict with the declaration of
+ rpl_putenv below (due to the #define putenv rpl_putenv from config.h). */
+
+char *malloc ();
+void free ();