diff --git a/common/fltk/src/flstring.h b/common/fltk/src/flstring.h
new file mode 100644
index 0000000..679e490
--- /dev/null
+++ b/common/fltk/src/flstring.h
@@ -0,0 +1,104 @@
+/*
+ * "$Id: flstring.h 7913 2010-11-29 18:18:27Z greg.ercolano $"
+ *
+ * Common string header file for the Fast Light Tool Kit (FLTK).
+ *
+ * Copyright 1998-2010 by Bill Spitzak and others.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA.
+ *
+ * Please report all bugs and problems on the following page:
+ *
+ *     http://www.fltk.org/str.php
+ */
+
+#ifndef flstring_h
+#  define flstring_h
+
+#  include <FL/Fl_Export.H>
+#  include <config.h>
+#  include <stdio.h>
+#  include <stdarg.h>
+#  include <string.h>
+#  ifdef HAVE_STRINGS_H
+#    include <strings.h>
+#  endif /* HAVE_STRINGS_H */
+#  include <ctype.h>
+
+/*
+ * Apparently Unixware defines "index" to strchr (!) rather than
+ * providing a proper entry point or not providing the (obsolete)
+ * BSD function.  Make sure index is not defined...
+ */
+
+#  ifdef index
+#    undef index
+#  endif /* index */
+
+#  if defined(WIN32) && !defined(__CYGWIN__)
+#    define strcasecmp(s,t)	_stricmp((s), (t))
+#    define strncasecmp(s,t,n)	_strnicmp((s), (t), (n))
+/* Visual C++ 2005 incorrectly displays a warning about the use of POSIX APIs
+ * on Windows, which is supposed to be POSIX compliant...  Some of these
+ * functions are also defined in ISO C99...
+ */
+#    ifndef __WATCOMC__
+#      define strdup _strdup
+#      define unlink _unlink
+#    endif /* !__WATCOMC__ */
+#  elif defined(__EMX__)
+#    define strcasecmp(s,t)	stricmp((s), (t))
+#    define strncasecmp(s,t,n)	strnicmp((s), (t), (n))
+#  endif /* WIN32 */
+
+#  ifdef __cplusplus
+extern "C" {
+#  endif /* __cplusplus */
+
+FL_EXPORT extern int fl_snprintf(char *, size_t, const char *, ...);
+#  if !HAVE_SNPRINTF
+#    define snprintf fl_snprintf
+#  endif /* !HAVE_SNPRINTF */
+
+FL_EXPORT extern int fl_vsnprintf(char *, size_t, const char *, va_list ap);
+#  if !HAVE_VSNPRINTF
+#    define vsnprintf fl_vsnprintf
+#  endif /* !HAVE_VSNPRINTF */
+
+/*
+ * strlcpy() and strlcat() are some really useful BSD string functions
+ * that work the way strncpy() and strncat() *should* have worked.
+ */
+
+FL_EXPORT extern size_t fl_strlcat(char *, const char *, size_t);
+#  if !HAVE_STRLCAT
+#    define strlcat fl_strlcat
+#  endif /* !HAVE_STRLCAT */
+
+FL_EXPORT extern size_t fl_strlcpy(char *, const char *, size_t);
+#  if !HAVE_STRLCPY
+#    define strlcpy fl_strlcpy
+#  endif /* !HAVE_STRLCPY */
+
+#  ifdef __cplusplus
+}
+#  endif /* __cplusplus */
+#endif /* !flstring_h */
+
+
+/*
+ * End of "$Id: flstring.h 7913 2010-11-29 18:18:27Z greg.ercolano $".
+ */