-# stdint.m4 serial 38
+# stdint.m4 serial 41
dnl Copyright (C) 2001-2011 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 From Paul Eggert and Bruno Haible.
dnl Test whether <stdint.h> is supported or must be substituted.
-AC_DEFUN([gl_STDINT_H],
+AC_DEFUN_ONCE([gl_STDINT_H],
[
AC_PREREQ([2.59])dnl
fi
AC_SUBST([HAVE_SYS_BITYPES_H])
- dnl Check for <wchar.h> (missing in Linux uClibc when built without wide
- dnl character support).
- AC_CHECK_HEADERS_ONCE([wchar.h])
-
gl_STDINT_TYPE_PROPERTIES
STDINT_H=stdint.h
fi
AC_SUBST([STDINT_H])
+ AM_CONDITIONAL([GL_GENERATE_STDINT_H], [test -n "$STDINT_H"])
])
dnl gl_STDINT_BITSIZEOF(TYPES, INCLUDES)
fi
gl_INTEGER_TYPE_SUFFIX([sig_atomic_t wchar_t wint_t],
[gl_STDINT_INCLUDES])
+
+ dnl If wint_t is smaller than 'int', it cannot satisfy the ISO C 99
+ dnl requirement that wint_t is "unchanged by default argument promotions".
+ dnl In this case gnulib's <wchar.h> and <wctype.h> override wint_t.
+ dnl Set the variable BITSIZEOF_WINT_T accordingly.
+ if test $BITSIZEOF_WINT_T -lt 32; then
+ BITSIZEOF_WINT_T=32
+ fi
])
dnl Autoconf >= 2.61 has AC_COMPUTE_INT built-in.