Copy from GCC: Add linker_output as prefix for LTO temps (PR lto/86548).

[deliverable/binutils-gdb.git] / libiberty / filename_cmp.c

diff --git a/libiberty/filename_cmp.c b/libiberty/filename_cmp.c
index 9e16d242086d499a795f1d8f954fc4964c391b8e..669fb5aeefb33f0bc01451d314bd4d43c14a7375 100644 (file)
--- a/libiberty/filename_cmp.c
+++ b/libiberty/filename_cmp.c
@@ -1,6 +1,6 @@
 /* File name comparison routine.
 
-   Copyright (C) 2007 Free Software Foundation, Inc.
+   Copyright (C) 2007-2018 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -24,8 +24,13 @@
 #include <string.h>
 #endif
 
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+
 #include "filenames.h"
 #include "safe-ctype.h"
+#include "libiberty.h"
 
 /*
 
@@ -190,3 +195,27 @@ filename_eq (const void *s1, const void *s2)
   /* The casts are for -Wc++-compat.  */
   return filename_cmp ((const char *) s1, (const char *) s2) == 0;
 }
+
+/*
+
+@deftypefn Extension int canonical_filename_eq (const char *@var{a}, const char *@var{b})
+
+Return non-zero if file names @var{a} and @var{b} are equivalent.
+This function compares the canonical versions of the filenames as returned by
+@code{lrealpath()}, so that so that different file names pointing to the same
+underlying file are treated as being identical.
+
+@end deftypefn
+
+*/
+
+int
+canonical_filename_eq (const char * a, const char * b)
+{
+  char * ca = lrealpath(a);
+  char * cb = lrealpath(b);
+  int res = filename_eq (ca, cb);
+  free (ca);
+  free (cb);
+  return res;
+}