--- /dev/null
+#serial 1
+dnl Cloned from xstrtoumax.m4. Keep these files in sync.
+
+# autoconf tests required for use of xstrtoimax.c
+
+AC_DEFUN([jm_AC_PREREQ_XSTRTOIMAX],
+[
+ AC_REQUIRE([jm_AC_TYPE_INTMAX_T])
+ AC_REQUIRE([jm_AC_HEADER_INTTYPES_H])
+ AC_REQUIRE([jm_AC_TYPE_LONG_LONG])
+ AC_CHECK_DECLS([strtol, strtoll])
+ AC_CHECK_HEADERS(limits.h stdlib.h)
+
+ AC_CACHE_CHECK([whether <inttypes.h> defines strtoimax as a macro],
+ jm_cv_func_strtoimax_macro,
+ AC_EGREP_CPP([inttypes_h_defines_strtoimax], [#include <inttypes.h>
+#ifdef strtoimax
+ inttypes_h_defines_strtoimax
+#endif],
+ jm_cv_func_strtoimax_macro=yes,
+ jm_cv_func_strtoimax_macro=no))
+
+ if test "$jm_cv_func_strtoimax_macro" != yes; then
+ AC_REPLACE_FUNCS(strtoimax)
+ fi
+
+ dnl We don't need (and can't compile) the replacement strtoll
+ dnl unless the type `long long' exists.
+ dnl Also, only the replacement strtoimax invokes strtoll,
+ dnl so we need the replacement strtoll only if strtoimax does not exist.
+ case "$ac_cv_type_long_long,$jm_cv_func_strtoimax_macro,$ac_cv_func_strtoimax" in
+ yes,no,no)
+ AC_REPLACE_FUNCS(strtoll)
+
+ dnl Check for strtol. Mainly as a cue to cause automake to include
+ dnl strtol.c -- that file is included by each of strtoul.c and strtoull.c.
+ AC_REPLACE_FUNCS(strtol)
+ ;;
+ esac
+
+ case "$jm_cv_func_strtoimax_macro,$ac_cv_func_strtoimax" in
+ no,no)
+ AC_REPLACE_FUNCS(strtoul)
+
+ dnl See explanation above.
+ AC_REPLACE_FUNCS(strtol)
+ ;;
+ esac
+
+])