Implement + deploy fl_strdup()

FL/fl_string.h

@@ -0,0 +1,47 @@
+/*
+ * Platform agnostic string portability functions for the Fast Light Tool Kit (FLTK).
+ *
+ * Copyright 2020 by Bill Spitzak and others.
+ *
+ * This library is free software. Distribution and use rights are outlined in
+ * the file "COPYING" which should have been included with this file.  If this
+ * file is missing or damaged, see the license at:
+ *
+ *     https://www.fltk.org/COPYING.php
+ *
+ * Please see the following page on how to report bugs and issues:
+ *
+ *     https://www.fltk.org/bugs.php
+ */
+
+/**
+  \file fl_string.h
+  \brief Public header for FLTK's own platform agnostic string handling.
+*/
+
+#ifndef _FL_fl_string_h_
+#define _FL_fl_string_h_
+
+#include "Fl_Export.H"
+#include "fl_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** \addtogroup fl_string
+    @{
+*/
+
+FL_EXPORT char* fl_strdup(const char *s);
+
+/** @} */
+
+/*****************************************************************************/
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+
+#endif /* _FL_fl_string_h_ */