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-rw-r--r--m4/strtoimax.m487
1 files changed, 87 insertions, 0 deletions
diff --git a/m4/strtoimax.m4 b/m4/strtoimax.m4
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@@ -0,0 +1,87 @@
+# strtoimax.m4 serial 14
+dnl Copyright (C) 2002-2004, 2006, 2009-2015 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_STRTOIMAX],
+[
+ AC_REQUIRE([gl_INTTYPES_H_DEFAULTS])
+
+ dnl On OSF/1 5.1 with cc, this function is declared but not defined.
+ AC_CHECK_FUNCS_ONCE([strtoimax])
+ AC_CHECK_DECLS_ONCE([strtoimax])
+ if test "$ac_cv_have_decl_strtoimax" != yes; then
+ HAVE_DECL_STRTOIMAX=0
+ fi
+
+ if test "$ac_cv_func_strtoimax" = yes; then
+ HAVE_STRTOIMAX=1
+ dnl On AIX 5.1, strtoimax() fails for values outside the 'int' range.
+ AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+ AC_CACHE_CHECK([whether strtoimax works], [gl_cv_func_strtoimax],
+ [AC_RUN_IFELSE(
+ [AC_LANG_SOURCE([[
+#include <errno.h>
+#include <string.h>
+#include <inttypes.h>
+int main ()
+{
+ if (sizeof (intmax_t) > sizeof (int))
+ {
+ const char *s = "4294967295";
+ char *p;
+ intmax_t res;
+ errno = 0;
+ res = strtoimax (s, &p, 10);
+ if (p != s + strlen (s))
+ return 1;
+ if (errno != 0)
+ return 2;
+ if (res != (intmax_t) 65535 * (intmax_t) 65537)
+ return 3;
+ }
+ else
+ {
+ const char *s = "2147483647";
+ char *p;
+ intmax_t res;
+ errno = 0;
+ res = strtoimax (s, &p, 10);
+ if (p != s + strlen (s))
+ return 1;
+ if (errno != 0)
+ return 2;
+ if (res != 2147483647)
+ return 3;
+ }
+ return 0;
+}
+]])],
+ [gl_cv_func_strtoimax=yes],
+ [gl_cv_func_strtoimax=no],
+ [case "$host_os" in
+ # Guess no on AIX 5.
+ aix5*) gl_cv_func_strtoimax="guessing no" ;;
+ # Guess yes otherwise.
+ *) gl_cv_func_strtoimax="guessing yes" ;;
+ esac
+ ])
+ ])
+ case "$gl_cv_func_strtoimax" in
+ *no) REPLACE_STRTOIMAX=1 ;;
+ esac
+ else
+ if test "$ac_cv_have_decl_strtoimax" = yes; then
+ # HP-UX 11.11 has "#define strtoimax(...) ..." but no function.
+ REPLACE_STRTOIMAX=1
+ fi
+ HAVE_STRTOIMAX=0
+ fi
+])
+
+# Prerequisites of lib/strtoimax.c.
+AC_DEFUN([gl_PREREQ_STRTOIMAX], [
+ AC_CHECK_DECLS([strtoll])
+ AC_REQUIRE([AC_TYPE_LONG_LONG_INT])
+])