Commit: Avoid linker testsuite warnings about missing compilers

[Nick Clifton]

Hi Guys

  A lot of errors like this:

    LD ERROR: x86_64-solaris2-gcc does not exist 

  have just started showing up in the linker testsuite when a target is
  tested on a host that does not have the appropriate compiler
  installed.  I am checking in the patch below as a simple fix for this
  problem.

Cheers
  Nick

2016-08-11  Nick Clifton  <nickc@redhat.com>

	PR ld/20436
	* testsuite/lib/ld-lib.exp (check_gcc_plugin_enabled): When not
	testing remotely, check to see if target compiler is installed
	before trying to run it.

diff --git a/ld/testsuite/lib/ld-lib.exp b/ld/testsuite/lib/ld-lib.exp
index b3cdb70..23055be 100644
--- a/ld/testsuite/lib/ld-lib.exp
+++ b/ld/testsuite/lib/ld-lib.exp
@@ -1815,7 +1815,10 @@ proc check_gcc_plugin_enabled { } {
     if { $CC == "" } {
       return 0
     }
+    if { ![is_remote host] && [which $CC] == 0 } then {
+       return 0
+     }
     set state [remote_exec host $CC -v]