3rdparty: Add fmt from upstream

src/3rdparty/CMakeLists.txt

@@ -1,3 +1,4 @@
+add_subdirectory(fmt)
 add_subdirectory(md5)
 add_subdirectory(squirrel)
 add_subdirectory(opengl)

src/3rdparty/fmt/CMakeLists.txt

@@ -0,0 +1,5 @@
+add_files(
+    core.h
+    format.h
+    format-inl.h
+)

src/3rdparty/fmt/LICENSE.rst

@@ -0,0 +1,27 @@
+Copyright (c) 2012 - present, Victor Zverovich
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+--- Optional exception to the license ---
+
+As an exception, if, as a result of your compiling your source code, portions
+of this Software are embedded into a machine-executable object form of such
+source code, you may redistribute such embedded portions in such object form
+without including the above copyright and permission notices.

src/stdafx.h

@@ -506,6 +506,9 @@ typedef uint32 unaligned_uint32;
 typedef uint64 unaligned_uint64;
 #endif /* __GNUC__ || __clang__ */
 
+/* For the FMT library we only want to use the headers, not link to some library. */
+#define FMT_HEADER_ONLY
+
 void NORETURN CDECL usererror(const char *str, ...) WARN_FORMAT(1, 2);
 void NORETURN CDECL error(const char *str, ...) WARN_FORMAT(1, 2);
 void NORETURN CDECL assert_msg_error(int line, const char *file, const char *expr, const char *extra, const char *str, ...) WARN_FORMAT(5, 6);