summaryrefslogtreecommitdiff
path: root/build2
diff options
context:
space:
mode:
Diffstat (limited to 'build2')
-rw-r--r--build2/checksum-change-detection9
1 files changed, 9 insertions, 0 deletions
diff --git a/build2/checksum-change-detection b/build2/checksum-change-detection
new file mode 100644
index 0000000..3069800
--- /dev/null
+++ b/build2/checksum-change-detection
@@ -0,0 +1,9 @@
+- Checksum of preprocessed output as change detection [idea]
+
+If instead of a timestamp (or, really, in addition to timestamp) we hash the
+preprocessor output, then we can detect (and avoid updating on) whitespace-
+only changes (e.g., edited a comment).
+
+The big question will be how to reuse this output if we do need to recompile.
+
+Also, this may fit nicely with the build slave idea.