PATCH COMMITTED: Make filenames.h C++ safe

[Ian Lance Taylor]

I have brought over this patch from the master gcc repository.

Ian


2008-03-21  Ian Lance Taylor  <iant@google.com>

	* filenames.h: Add extern "C" when compiled with C++.


Index: filenames.h
===================================================================
RCS file: /cvs/src/src/include/filenames.h,v
retrieving revision 1.4
diff -u -r1.4 filenames.h
--- filenames.h	29 Mar 2007 21:03:43 -0000	1.4
+++ filenames.h	21 Mar 2008 23:39:52 -0000
@@ -26,6 +26,10 @@
 #ifndef FILENAMES_H
 #define FILENAMES_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #if defined(__MSDOS__) || defined(_WIN32) || defined(__OS2__) || defined (__CYGWIN__)
 
 #ifndef HAVE_DOS_BASED_FILE_SYSTEM
@@ -49,4 +53,8 @@
 extern int filename_cmp (const char *s1, const char *s2);
 #define FILENAME_CMP(s1, s2)	filename_cmp(s1, s2)
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* FILENAMES_H */