ld: Skip bootstrap tests for -fprofile-generate=

Make plug_opt available to all linker tests.  Skip bootstrap tests when
linker is compiled with -fprofile-generate=.

	* testsuite/ld-plugin/lto.exp (plug_opt): Moved to ...
	* testsuite/config/default.exp (plug_opt): Here.  New.
	* testsuite/ld-bootstrap/bootstrap.exp: Skip when linker is
	compiled with -fprofile-generate=.

ld/ChangeLog

@@ -1,3 +1,10 @@
+2020-10-22  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* testsuite/ld-plugin/lto.exp (plug_opt): Moved to ...
+	* testsuite/config/default.exp (plug_opt): Here.  New.
+	* testsuite/ld-bootstrap/bootstrap.exp: Skip when linker is
+	compiled with -fprofile-generate=.
+
 2020-10-22  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* testsuite/config/default.exp (NOLTO_CFLAGS): New.

ld/testsuite/config/default.exp

@@ -424,3 +424,20 @@ if { [istarget alpha*-*-*vms*] } {
     }
     unset f src
 }
+
+set plugin_names {
+    liblto_plugin.so
+    liblto_plugin-0.dll
+    cyglto_plugin-0.dll
+}
+set plug_opt ""
+foreach plug $plugin_names {
+    set plug_so [run_host_cmd $CC "--print-prog-name $plug"]
+    if { $plug_so eq $plug } then {
+	set plug_so [run_host_cmd $CC "--print-file-name $plug"]
+    }
+    if { $plug_so ne $plug } then {
+	set plug_opt "--plugin $plug_so"
+	break
+    }
+}

ld/testsuite/ld-bootstrap/bootstrap.exp

@@ -29,7 +29,13 @@ if ![isnative] {
     return
 }
 
-# Determine if plugin support is present.
+# Skip for -fprofile-generate=.
+catch "exec $nm $plug_opt $OFILES" exec_output
+send_log "foo: $exec_output"
+if { [ string match "*__gcov_*" $exec_output ] } {
+    return
+}
+
 remote_exec host "$nm --help" "" "/dev/null" "plugin-support"
 set tmp [file_contents "plugin-support"]
 regexp ".*\(--plugin\).*\n" $tmp foo plugins

ld/testsuite/ld-plugin/lto.exp

@@ -41,22 +41,6 @@ proc restore_notify { } {
   set CXXFLAGS "$saved_CXXFLAGS"
 }
 
-set plugin_names {
-    liblto_plugin.so
-    liblto_plugin-0.dll
-    cyglto_plugin-0.dll
-}
-set plug_opt ""
-foreach plug $plugin_names {
-    set plug_so [run_host_cmd $CC "--print-prog-name $plug"]
-    if { $plug_so eq $plug } then {
-	set plug_so [run_host_cmd $CC "--print-file-name $plug"]
-    }
-    if { $plug_so ne $plug } then {
-	set plug_opt "--plugin $plug_so"
-	break
-    }
-}
 set lto_fat ""
 set lto_no_fat ""
 if { [check_lto_fat_available] } {