1 files changed, 41 insertions, 0 deletions

diff --git a/gl/m4/wctype.m4 b/gl/m4/wctype.m4
new file mode 100644
index 0000000..62994c6
--- /dev/null
+++ b/gl/m4/wctype.m4
@@ -0,0 +1,41 @@
+dnl A placeholder for ISO C99 <wctype.h>, for platforms that lack it.
+
+dnl Copyright (C) 2006, 2007 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.
+
+dnl Written by Paul Eggert.
+
+AC_DEFUN([gl_WCTYPE_H],
+[
+  AC_CHECK_FUNCS_ONCE([iswcntrl])
+  AC_CHECK_HEADERS_ONCE([wctype.h])
+  AC_REQUIRE([AC_C_INLINE])
+
+  AC_REQUIRE([gt_TYPE_WINT_T])
+  if test $gt_cv_c_wint_t = yes; then
+    HAVE_WINT_T=1
+  else
+    HAVE_WINT_T=0
+  fi
+  AC_SUBST([HAVE_WINT_T])
+
+  WCTYPE_H=wctype.h
+  if test $ac_cv_header_wctype_h = yes; then
+    if test "$ac_cv_func_iswcntrl" = yes; then
+      WCTYPE_H=
+    fi
+    dnl Compute ABSOLUTE_WCTYPE_H even if WCTYPE_H is empty,
+    dnl for the benefit of builds from non-distclean directories.
+    gl_ABSOLUTE_HEADER([wctype.h])
+    ABSOLUTE_WCTYPE_H=\"$gl_cv_absolute_wctype_h\"
+    HAVE_WCTYPE_H=1
+  else
+    ABSOLUTE_WCTYPE_H=\"no/such/file/wctype.h\"
+    HAVE_WCTYPE_H=0
+  fi
+  AC_SUBST([ABSOLUTE_WCTYPE_H])
+  AC_SUBST([HAVE_WCTYPE_H])
+  AC_SUBST([WCTYPE_H])
+])