update-readme-devel-for-parallel-make-hints-20020101

suggestions which make parallel make easier to support

diff --git a/README.DEVEL b/README.DEVEL
index cfe27c7..4f85da5 100644 (file)
--- a/README.DEVEL
+++ b/README.DEVEL
@@ -7,3 +7,12 @@ make that is not available on all systems.
 Be careful with prototypes/ANSI-C in code that will be compiled for
 kernel source.  In general, avoid them until we have figured out
 exactly when/where they can be used safely.
+
+Do not have build rules that build multiple targets. Make doesn't seem able
+to handle this, and it interferes with -j builds. (In particular, build the
+rxgen targets individually and not using the flags for building all the files
+in one shot.)
+
+Try to test builds using gmake -j # MAKE="gmake -j #", it seems like a good
+way to find missing or order-dependent dependency rules. (Is there a better
+way to do this?)