(jm_PREREQ_QUOTEARG): Use AC_MBSTATE_T_OBJECT. Add check for iswprint.

diff --git a/m4/prereq.m4 b/m4/prereq.m4
index c621089..5229d48 100644 (file)
--- a/m4/prereq.m4
+++ b/m4/prereq.m4
@@ -56,10 +56,11 @@ AC_DEFUN(jm_PREREQ_GETPAGESIZE,
 
 AC_DEFUN(jm_PREREQ_QUOTEARG,
 [
-  AC_CHECK_FUNCS(isascii mbrtowc)
+  AC_CHECK_FUNCS(isascii iswprint mbrtowc)
   AC_CHECK_HEADERS(limits.h stdlib.h string.h wchar.h wctype.h)
   AC_HEADER_STDC
   AC_C_BACKSLASH_A
+  AC_MBSTATE_T_OBJECT
   AM_C_PROTOTYPES
 ])