Implement tracing support

Also use to-relative path translation in diagnostics.

1 files changed, 8 insertions, 0 deletions

diff --git a/tests/build/lexer/buildfile b/tests/build/lexer/buildfile
new file mode 100644
index 0000000..06e1f75
--- /dev/null
+++ b/tests/build/lexer/buildfile
@@ -0,0 +1,8 @@
+exe{driver}: obj{driver ../../../build/lexer}
+
+obj{driver}: cxx{driver}
+
+../../../build/:
+{
+  obj{lexer}: cxx{lexer}
+}