+
+ AC_CACHE_CHECK([whether <inttypes.h> defines strtoumax as a macro],
+ jm_cv_func_strtoumax_macro,
+ AC_EGREP_CPP([inttypes_h_defines_strtoumax], [#include <inttypes.h>
+#ifdef strtoumax
+ inttypes_h_defines_strtoumax
+#endif],
+ jm_cv_func_strtoumax_macro=yes,
+ jm_cv_func_strtoumax_macro=no))
+
+ if test "$jm_cv_func_strtoumax_macro" != yes; then
+ AC_REPLACE_FUNCS(strtoumax)
+ fi
+
+ dnl We don't need (and can't compile) the replacement strtoull
+ dnl unless the type `unsigned long long' exists.
+ dnl Also, only the replacement strtoumax invokes strtoull,
+ dnl so we need the replacement strtoull only if strtoumax does not exist.
+ case "$ac_cv_type_unsigned_long_long,$jm_cv_func_strtoumax_macro,$ac_cv_func_strtoumax" in
+ yes,no,no)
+ AC_REPLACE_FUNCS(strtoull)
+ ;;
+ esac
+