- dnl Ensure that <stdint.h> defines the limit macros, since gnulib's
- dnl <inttypes.h> relies on them. This macro is only needed when a
- dnl C++ compiler is in use; it has no effect for a C compiler.
- dnl Also be careful to define __STDC_LIMIT_MACROS only when gnulib's
- dnl <inttypes.h> is going to be created, and to avoid redefinition warnings
- dnl if the __STDC_LIMIT_MACROS is already defined through the CPPFLAGS.
- AC_DEFINE([GL_TRIGGER_STDC_LIMIT_MACROS], [1],
- [Define to make the limit macros in <stdint.h> visible.])
- AH_VERBATIM([__STDC_LIMIT_MACROS_ZZZ],
-[/* Ensure that <stdint.h> defines the limit macros, since gnulib's
- <inttypes.h> relies on them. */
-#if defined __cplusplus && !defined __STDC_LIMIT_MACROS && GL_TRIGGER_STDC_LIMIT_MACROS
-# define __STDC_LIMIT_MACROS 1
-#endif
+ dnl Check for declarations of anything we want to poison if the
+ dnl corresponding gnulib module is not in use.
+ gl_WARN_ON_USE_PREPARE([[#include <inttypes.h>
+ ]], [imaxabs imaxdiv strtoimax strtoumax])