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-rw-r--r--gdb/utils.c27
1 files changed, 18 insertions, 9 deletions
diff --git a/gdb/utils.c b/gdb/utils.c
index be9dc45..edc340e 100644
--- a/gdb/utils.c
+++ b/gdb/utils.c
@@ -81,6 +81,11 @@ extern PTR realloc ();
#ifdef NEED_DECLARATION_FREE
extern void free ();
#endif
+/* Actually, we'll never have the decl, since we don't define _GNU_SOURCE. */
+#if defined(HAVE_CANONICALIZE_FILE_NAME) \
+ && defined(NEED_DECLARATION_CANONICALIZE_FILE_NAME)
+extern char *canonicalize_file_name (const char *);
+#endif
#undef XMALLOC
#define XMALLOC(TYPE) ((TYPE*) xmalloc (sizeof (TYPE)))
@@ -2532,20 +2537,24 @@ string_to_core_addr (const char *my_string)
char *
gdb_realpath (const char *filename)
{
-#ifdef HAVE_CANONICALIZE_FILE_NAME
- return canonicalize_file_name (filename);
-#elif defined (HAVE_REALPATH)
-#if defined (PATH_MAX)
+#if defined(HAVE_REALPATH)
+# if defined (PATH_MAX)
char buf[PATH_MAX];
-#elif defined (MAXPATHLEN)
+# define USE_REALPATH
+# elif defined (MAXPATHLEN)
char buf[MAXPATHLEN];
-#elif defined (HAVE_UNISTD_H) && defined(HAVE_ALLOCA)
+# define USE_REALPATH
+# elif defined (HAVE_UNISTD_H) && defined(HAVE_ALLOCA)
char *buf = alloca ((size_t)pathconf ("/", _PC_PATH_MAX));
-#else
-#error "Neither PATH_MAX nor MAXPATHLEN defined"
-#endif
+# define USE_REALPATH
+# endif
+#endif /* HAVE_REALPATH */
+
+#if defined(USE_REALPATH)
char *rp = realpath (filename, buf);
return xstrdup (rp ? rp : filename);
+#elif defined(HAVE_CANONICALIZE_FILE_NAME)
+ return canonicalize_file_name (filename);
#else
return xstrdup (filename);
#endif