ircd::util: Split lex_cast into header (otherwise the ifdef will never be true).

include/ircd/lex_cast.h

@@ -0,0 +1,47 @@
+/*
+ * charybdis: 21st Century IRC++d
+ * lex_cast.h: Import convenience for boost::lexical_cast
+ * - This is a non-stdinc.h header, and must be included per-use.
+ *
+ * Copyright (C) 2016 Charybdis Development Team
+ * Copyright (C) 2016 Jason Volk <jason@zemos.net>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice is present in all copies.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#pragma once
+#define HAVE_IRCD_LEX_CAST
+
+#ifdef __cplusplus
+#include <RB_INC_BOOST_LEXICAL_CAST_HPP
+
+namespace ircd        {
+inline namespace util {
+
+#ifdef BOOST_LEXICAL_CAST_INCLUDED
+template<class T = std::string,
+         class... Args>
+auto lex_cast(Args&&... args)
+{
+	return boost::lexical_cast<T>(std::forward<Args>(args)...);
+}
+#endif
+
+}        // namespace util
+}        // namespace ircd
+#endif   // __cplusplus

include/ircd/util.h

@@ -111,16 +111,6 @@ struct case_insensitive_less
 };
 
 
-#ifdef BOOST_LEXICAL_CAST_INCLUDED
-template<class T = std::string,
-         class... Args>
-auto lex_cast(Args&&... args)
-{
-	return boost::lexical_cast<T>(std::forward<Args>(args)...);
-}
-#endif
-
-
 /**
  * flag-enum utilities
  *