Compile the LLDB tests out-of-tree.

This patch is the result of a discussion on lldb-dev, see
http://lists.llvm.org/pipermail/lldb-dev/2018-January/013111.html for
background.

For each test (should be eventually: each test configuration) a
separate build directory is created and we execute

  make VPATH=$srcdir/path/to/test -C $builddir/path/to/test -f $srcdir/path/to/test/Makefile -I $srcdir/path/to/test

In order to make this work all LLDB tests need to be updated to find
the executable in the test build directory, since CWD still points at
the test's source directory, which is a requirement for unittest2.

Although we have done extensive testing, I'm expecting that this first
attempt will break a few bots. Please DO NOT HESITATE TO REVERT this
patch in order to get the bots green again. We will likely have to
iterate on this some more.

Differential Revision: https://reviews.llvm.org/D42281

llvm-svn: 323803

1 files changed, 7 insertions, 4 deletions

diff --git a/lldb/packages/Python/lldbsuite/test/source-manager/TestSourceManager.py b/lldb/packages/Python/lldbsuite/test/source-manager/TestSourceManager.py
index 44bac1de2b4..a30f8187cdc 100644
--- a/lldb/packages/Python/lldbsuite/test/source-manager/TestSourceManager.py
+++ b/lldb/packages/Python/lldbsuite/test/source-manager/TestSourceManager.py
@@ -140,10 +140,12 @@ class SourceManagerTestCase(TestBase):
 
         # Set target.source-map settings.
         self.runCmd("settings set target.source-map %s %s" %
-                    (os.getcwd(), os.path.join(os.getcwd(), "hidden")))
+                    (self.getSourceDir(),
+                     os.path.join(self.getSourceDir(), "hidden")))
         # And verify that the settings work.
         self.expect("settings show target.source-map",
-                    substrs=[os.getcwd(), os.path.join(os.getcwd(), "hidden")])
+                    substrs=[self.getSourceDir(),
+                             os.path.join(self.getSourceDir(), "hidden")])
 
         # Display main() and verify that the source mapping has been kicked in.
         self.expect("source list -n main", SOURCE_DISPLAYED_CORRECTLY,
@@ -235,10 +237,11 @@ class SourceManagerTestCase(TestBase):
     def test_set_breakpoint_with_absolute_path(self):
         self.build()
         self.runCmd("settings set target.source-map %s %s" %
-                    (os.getcwd(), os.path.join(os.getcwd(), "hidden")))
+                    (self.getSourceDir(),
+                     os.path.join(self.getSourceDir(), "hidden")))
 
         exe = self.getBuildArtifact("a.out")
-        main = os.path.join(os.getcwd(), "hidden", "main.c")
+        main = os.path.join(self.getSourceDir(), "hidden", "main.c")
         self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
 
         lldbutil.run_break_set_by_file_and_line(