linux.h: Add a comment to mark macros that are being overriden in config/k*bsd-gnu.h.

	* gcc/config/i386/linux.h:  Add a comment to mark macros that are
	being overriden in config/k*bsd-gnu.h.
	* gcc/config/kfreebsd-gnu.h:  Redefine GLIBC_DYNAMIC_LINKER instead of
	DYNAMIC_LINKER.
	* gcc/config/knetbsd-gnu.h:  Ditto.

From-SVN: r112740

gcc/ChangeLog

+2006-03-05  Robert Millan  <robertmh@gnu.org>
+
+	* gcc/config/i386/linux.h:  Add a comment to mark macros that are
+	being overriden in config/k*bsd-gnu.h.
+	* gcc/config/kfreebsd-gnu.h:  Redefine GLIBC_DYNAMIC_LINKER instead of
+	DYNAMIC_LINKER.
+	* gcc/config/knetbsd-gnu.h:  Ditto.
+
 2006-04-06  Jan Hubicka  <jh@suse.cz>
 
 	PR profile/20815

gcc/config/i386/linux.h

@@ -99,6 +99,7 @@ Boston, MA 02110-1301, USA.  */
 
 /* If ELF is the default format, we should not use /lib/elf.  */
 
+/* These macros may be overridden in k*bsd-gnu.h and i386/k*bsd-gnu.h. */
 #define LINK_EMULATION "elf_i386"
 #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
 

gcc/config/kfreebsd-gnu.h

 /* Definitions for kFreeBSD-based GNU systems with ELF format
-   Copyright (C) 2004
+   Copyright (C) 2004, 2006
    Free Software Foundation, Inc.
    Contributed by Robert Millan.
 
@@ -32,5 +32,7 @@ Boston, MA 02110-1301, USA.  */
     }						\
   while (0)
 
-#undef DYNAMIC_LINKER
-#define DYNAMIC_LINKER "/lib/ld.so.1"
+#ifdef GLIBC_DYNAMIC_LINKER
+#undef GLIBC_DYNAMIC_LINKER
+#define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
+#endif

gcc/config/knetbsd-gnu.h

 /* Definitions for kNetBSD-based GNU systems with ELF format
-   Copyright (C) 2004
+   Copyright (C) 2004, 2006
    Free Software Foundation, Inc.
    Contributed by Robert Millan.
 
@@ -32,5 +32,8 @@ Boston, MA 02110-1301, USA.  */
     }						\
   while (0)
 
-#undef DYNAMIC_LINKER
-#define DYNAMIC_LINKER "/lib/ld.so.1"
+
+#ifdef GLIBC_DYNAMIC_LINKER
+#undef GLIBC_DYNAMIC_LINKER
+#define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
+#endif