X-Git-Url: https://git.notmuchmail.org/git?p=notmuch;a=blobdiff_plain;f=Makefile;h=0428160b80c23c5e65900b7c9a346508550bc85e;hp=bb9c3164274ee191f991a7061936c2b4645f4207;hb=96c0ce28f8288773870bff5a6ef1c43ff3a931f8;hpb=d86522637a7cd0455c127284ebccf3645d681441

diff --git a/Makefile b/Makefile
index bb9c3164..0428160b 100644
--- a/Makefile
+++ b/Makefile
@@ -2,8 +2,10 @@
 # given explicitly on the command line) so mention it first.
 all:
 
-# List all subdirectories here. Each contains its own Makefile.local
-subdirs = compat completion emacs lib man parse-time-string util test
+# List all subdirectories here. Each contains its own Makefile.local.
+# Use of '=', without '+=', seems to be required for out-of-tree
+# builds to work.
+subdirs = compat completion emacs lib man parse-time-string performance-test util test
 
 # We make all targets depend on the Makefiles themselves.
 global_deps = Makefile Makefile.config Makefile.local \