[PATCH] gdb: sim: automatically pass down sysroot

[Mike Frysinger <vapier@gentoo.org>]

Since gdb sets up a nice sysroot path for us by default, automatically
pass it down to the sim target so it too gets a good default.  This does
not override anything the user explicitly specifies of course.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

2011-05-26  Mike Frysinger  <vapier@gentoo.org>

	* remote-sim.c (gdbsim_open): Add the strlen of " --sysroot=" and
	gdb_sysroot to the "len" variable.  Append both to "arg_buf".
---
 gdb/remote-sim.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/gdb/remote-sim.c b/gdb/remote-sim.c
index bf4e0ee..918d5cb 100644
--- a/gdb/remote-sim.c
+++ b/gdb/remote-sim.c
@@ -684,6 +684,7 @@ gdbsim_open (char *args, int from_tty)
   len = (7 + 1			/* gdbsim */
 	 + strlen (" -E little")
 	 + strlen (" --architecture=xxxxxxxxxx")
+	 + strlen (" --sysroot=") + strlen (gdb_sysroot) +
 	 + (args ? strlen (args) : 0)
 	 + 50) /* slack */ ;
   arg_buf = (char *) alloca (len);
@@ -708,6 +709,9 @@ gdbsim_open (char *args, int from_tty)
       strcat (arg_buf, " --architecture=");
       strcat (arg_buf, selected_architecture_name ());
     }
+  /* Pass along gdb's concept of the sysroot.  */
+  strcat (arg_buf, " --sysroot=");
+  strcat (arg_buf, gdb_sysroot);
   /* finally, any explicit args */
   if (args)
     {
-- 
1.7.5.rc3