gdb: sim: automatically pass down sysroot

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>

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index a560fd5..d5b8781 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2011-06-01  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".
+
 2011-06-01  Yao Qi  <yao@codesourcery.com>
 
        * objfiles.h (obj_section_addr): Update reference to objfile from

diff --git a/gdb/remote-sim.c b/gdb/remote-sim.c
index bf4e0ee..918d5cb 100644 (file)
--- 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)
     {