Disable gdb.mi environment-pwd tests for remote-host testing

["Joseph S. Myers" <joseph@codesourcery.com>]

When doing remote-host testing, it is generally necessary that any path 
that is available on the build system and used in testing (the source and 
object directories, in particular) is also available on the host system 
with the same contents (that is, a shared filesystem is used).  In theory 
it is not needed, but most DejaGnu testsuites do not do all the copying 
between build and host systems that is required to work without a shared 
filesystem.

Although the path must be available on both systems, the canonical form 
may not be the same on both systems (for example, the path on the host may 
be a symlink to a /net automount from the build system, or the host may 
have a different OS using different path conventions).  mi-basics.exp and 
mi2-basics.exp contain tests of environment-pwd which are thus 
inappropriate in the remote-host case, since this command calls getcwd 
which may return a canonical path for the host, not the same as the path 
on the build system.  This patch disables the problematic tests for the 
remote-host case.  OK to commit?

2009-08-18  Joseph Myers  <joseph@codesourcery.com>

	* gdb.mi/mi-basics.exp (test_cwd_specification): Do not test
	environment-pwd for remote host.
	* gdb.mi/mi2-basics.exp (test_cwd_specification): Likewise.

Index: gdb/testsuite/gdb.mi/mi-basics.exp
===================================================================
RCS file: /cvs/src/src/gdb/testsuite/gdb.mi/mi-basics.exp,v
retrieving revision 1.22
diff -u -r1.22 mi-basics.exp
--- gdb/testsuite/gdb.mi/mi-basics.exp	9 Jun 2009 17:12:42 -0000	1.22
+++ gdb/testsuite/gdb.mi/mi-basics.exp	18 Aug 2009 16:34:12 -0000
@@ -184,9 +184,11 @@
              "205\\\^done" \
              "environment-cd arg operation"
 
-    mi_gdb_test "206-environment-pwd" \
+    if ![is_remote host] {
+	mi_gdb_test "206-environment-pwd" \
              "206\\\^done,cwd=\"${escapedobjdir}\"" \
              "environment-pwd operation"
+    }
 }
 
 proc test_path_specification {} {
Index: gdb/testsuite/gdb.mi/mi2-basics.exp
===================================================================
RCS file: /cvs/src/src/gdb/testsuite/gdb.mi/mi2-basics.exp,v
retrieving revision 1.14
diff -u -r1.14 mi2-basics.exp
--- gdb/testsuite/gdb.mi/mi2-basics.exp	9 Jun 2009 17:12:43 -0000	1.14
+++ gdb/testsuite/gdb.mi/mi2-basics.exp	18 Aug 2009 16:34:12 -0000
@@ -186,9 +186,11 @@
              "205\\\^done" \
              "environment-cd arg operation"
 
-    mi_gdb_test "206-environment-pwd" \
+    if ![is_remote host] {
+	mi_gdb_test "206-environment-pwd" \
              "206\\\^done,cwd=\"${escapedobjdir}\"" \
              "environment-pwd operation"
+    }
 }
 
 proc test_path_specification {} {

-- 
Joseph S. Myers
joseph@codesourcery.com