feat: output markers to make it easier to discard junk from log

QEMU outputs BIOS boot messages to all serial ports, when there is no
virtual screen attached. This messes up the build log. Add markers to
where the build log starts and ends to make it easier to ignore the
junk.

Signed-off-by: Lars Wirzenius <liw@liw.fi>
Sponsored-by: author

1 files changed, 6 insertions, 0 deletions

diff --git a/ambient-run-script b/ambient-run-script
index b905609..bb13c9f 100755
--- a/ambient-run-script
+++ b/ambient-run-script
@@ -18,6 +18,10 @@ class RunScript:
         self.log.write(f"{txt}\n")
         self.log.flush()
 
+    def marker(self, symbol):
+        line = "=" * 22
+        self.msg(f"\n{line} {symbol} {line}\n")
+
     def join(self, path):
         return os.path.join(self.root, f"./{path}")
 
@@ -39,6 +43,7 @@ class RunScript:
         tar.close()
 
     def run(self):
+        self.marker("BEGIN")
         self.create_workspace()
         self.extract_sources()
         if self.args.cache:
@@ -48,6 +53,7 @@ class RunScript:
         self.build()
         if self.args.cache:
             self.save_cache()
+        self.marker("END")
 
     def create_workspace(self):
         self.msg("create /workspace")