[PATCH v4 4/5] libgo/test: Complement compilation fix for build sysroot

["Maciej W. Rozycki" <macro@wdc.com>]

Complement commit b72813a68c94 ("libgo: fix DejaGNU testsuite compiler 
when using build sysroot") and move testsuite/libgo-test-support.exp.in 
to testsuite/libgo-site-extra.exp.in.  Update testsuite/lib/libgo.exp to 
handle the `--tool_exec' option to `runtest' as with other top-level GCC 
target libraries, by using the TOOL_EXECUTABLE TCL variable.

	libgo/
	* configure.ac: Produce testsuite/libgo-site-extra.exp rather 
	than testsuite/libgo-test-support.exp.
	* configure: Regenerate.
	* testsuite/libgo-test-support.exp.in: Rename file to...
	* testsuite/libgo-site-extra.exp.in: ... this.
	* testsuite/Makefile.am: Use libgo-site-extra.exp rather than 
	libgo-test-support.exp.
	* testsuite/Makefile.in: Regenerate.
	* testsuite/lib/libgo.exp: Handle TOOL_EXECUTABLE.
---
No changes from v3.

Changes from v2:

- Rename testsuite/libgo-test-support.exp.in to 
  testsuite/libgo-site-extra.exp.in.

Applies on top of v1.
---
 libgo/configure                           |    4 ++--
 libgo/configure.ac                        |    2 +-
 libgo/testsuite/Makefile.am               |    2 +-
 libgo/testsuite/Makefile.in               |    6 +++---
 libgo/testsuite/lib/libgo.exp             |   12 ++++++++----
 libgo/testsuite/libgo-site-extra.exp.in   |   17 +++++++++++++++++
 libgo/testsuite/libgo-test-support.exp.in |   17 -----------------
 7 files changed, 32 insertions(+), 28 deletions(-)

gcc-test-libgo-site-extra.diff
Index: gcc/libgo/configure
===================================================================
--- gcc.orig/libgo/configure
+++ gcc/libgo/configure
@@ -15893,7 +15893,7 @@ else
   multilib_arg=
 fi
 
-ac_config_files="$ac_config_files Makefile testsuite/Makefile testsuite/libgo-test-support.exp"
+ac_config_files="$ac_config_files Makefile testsuite/Makefile testsuite/libgo-site-extra.exp"
 
 
 ac_config_commands="$ac_config_commands default"
@@ -17074,7 +17074,7 @@ do
     "libtool") CONFIG_COMMANDS="$CONFIG_COMMANDS libtool" ;;
     "Makefile") CONFIG_FILES="$CONFIG_FILES Makefile" ;;
     "testsuite/Makefile") CONFIG_FILES="$CONFIG_FILES testsuite/Makefile" ;;
-    "testsuite/libgo-test-support.exp") CONFIG_FILES="$CONFIG_FILES testsuite/libgo-test-support.exp" ;;
+    "testsuite/libgo-site-extra.exp") CONFIG_FILES="$CONFIG_FILES testsuite/libgo-site-extra.exp" ;;
     "default") CONFIG_COMMANDS="$CONFIG_COMMANDS default" ;;
 
   *) as_fn_error $? "invalid argument: \`$ac_config_target'" "$LINENO" 5;;
Index: gcc/libgo/configure.ac
===================================================================
--- gcc.orig/libgo/configure.ac
+++ gcc/libgo/configure.ac
@@ -895,7 +895,7 @@ else
   multilib_arg=
 fi
 
-AC_CONFIG_FILES(Makefile testsuite/Makefile testsuite/libgo-test-support.exp)
+AC_CONFIG_FILES(Makefile testsuite/Makefile testsuite/libgo-site-extra.exp)
 
 AC_CONFIG_COMMANDS([default],
 [if test -n "$CONFIG_FILES"; then
Index: gcc/libgo/testsuite/Makefile.am
===================================================================
--- gcc.orig/libgo/testsuite/Makefile.am
+++ gcc/libgo/testsuite/Makefile.am
@@ -11,7 +11,7 @@ RUNTEST = `if [ -f $(top_srcdir)/../deja
 	       echo $(top_srcdir)/../dejagnu/runtest ; \
 	    else echo runtest; fi`
 
-EXTRA_DEJAGNU_SITE_CONFIG = libgo-test-support.exp
+EXTRA_DEJAGNU_SITE_CONFIG = libgo-site-extra.exp
 
 # When running the tests we set GCC_EXEC_PREFIX to the install tree so that
 # files that have already been installed there will be found.  The -B option
Index: gcc/libgo/testsuite/Makefile.in
===================================================================
--- gcc.orig/libgo/testsuite/Makefile.in
+++ gcc/libgo/testsuite/Makefile.in
@@ -107,7 +107,7 @@ am__configure_deps = $(am__aclocal_m4_de
 DIST_COMMON = $(srcdir)/Makefile.am
 mkinstalldirs = $(SHELL) $(top_srcdir)/../mkinstalldirs
 CONFIG_HEADER = $(top_builddir)/config.h
-CONFIG_CLEAN_FILES = libgo-test-support.exp
+CONFIG_CLEAN_FILES = libgo-site-extra.exp
 CONFIG_CLEAN_VPATH_FILES =
 AM_V_P = $(am__v_P_@AM_V@)
 am__v_P_ = $(am__v_P_@AM_DEFAULT_V@)
@@ -300,7 +300,7 @@ RUNTEST = `if [ -f $(top_srcdir)/../deja
 	       echo $(top_srcdir)/../dejagnu/runtest ; \
 	    else echo runtest; fi`
 
-EXTRA_DEJAGNU_SITE_CONFIG = libgo-test-support.exp
+EXTRA_DEJAGNU_SITE_CONFIG = libgo-site-extra.exp
 
 # When running the tests we set GCC_EXEC_PREFIX to the install tree so that
 # files that have already been installed there will be found.  The -B option
@@ -340,7 +340,7 @@ $(top_srcdir)/configure: @MAINTAINER_MOD
 $(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
 	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
 $(am__aclocal_m4_deps):
-libgo-test-support.exp: $(top_builddir)/config.status $(srcdir)/libgo-test-support.exp.in
+libgo-site-extra.exp: $(top_builddir)/config.status $(srcdir)/libgo-site-extra.exp.in
 	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
 
 mostlyclean-libtool:
Index: gcc/libgo/testsuite/lib/libgo.exp
===================================================================
--- gcc.orig/libgo/testsuite/lib/libgo.exp
+++ gcc/libgo/testsuite/lib/libgo.exp
@@ -17,11 +17,15 @@
 set TESTING_IN_BUILD_TREE 1
 
 if ![info exists GOC_UNDER_TEST] then {
-    set gccdir [lookfor_file $tool_root_dir gcc/libgcc.a]
-    if {$gccdir != ""} {
-	set gccdir [file dirname $gccdir]
+    if [info exists TOOL_EXECUTABLE] {
+	set GOC_UNDER_TEST $TOOL_EXECUTABLE
+    } else {
+	set gccdir [lookfor_file $tool_root_dir gcc/libgcc.a]
+	if {$gccdir != ""} {
+	    set gccdir [file dirname $gccdir]
+	}
+	set GOC_UNDER_TEST "$gccdir/gccgo -B$gccdir/"
     }
-    set GOC_UNDER_TEST "$gccdir/gccgo -B$gccdir/"
 }
 
 if [info exists GOTEST_TMPDIR] {
Index: gcc/libgo/testsuite/libgo-site-extra.exp.in
===================================================================
--- /dev/null
+++ gcc/libgo/testsuite/libgo-site-extra.exp.in
@@ -0,0 +1,17 @@
+# Copyright (C) 2019 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GCC; see the file COPYING3.  If not see
+# <http://www.gnu.org/licenses/>.
+
+set GOC_UNDER_TEST {@GOC@}
Index: gcc/libgo/testsuite/libgo-test-support.exp.in
===================================================================
--- gcc.orig/libgo/testsuite/libgo-test-support.exp.in
+++ /dev/null
@@ -1,17 +0,0 @@
-# Copyright (C) 2019 Free Software Foundation, Inc.
-
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GCC; see the file COPYING3.  If not see
-# <http://www.gnu.org/licenses/>.
-
-set GOC_UNDER_TEST {@GOC@}