xstrtoumax.m4   [plain text]

#serial 1

# autoconf tests required for use of xstrtoumax.c

AC_DEFUN(jm_AC_PREREQ_XSTRTOUMAX,
[
  AC_REQUIRE([jm_AC_HEADER_INTTYPES_H])
  AC_REQUIRE([jm_AC_TYPE_UNSIGNED_LONG_LONG])
  AC_CHECK_HEADERS(stdlib.h)
  AC_REPLACE_FUNCS(strtoumax)

  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 "$ac_cv_type_unsigned_long_long,$ac_cv_func_strtoumax" in
    yes,no)
      AC_REPLACE_FUNCS(strtoull)
      ;;
  esac

])