X-Git-Url: https://git.notmuchmail.org/git?p=notmuch;a=blobdiff_plain;f=Makefile;h=39f0e62fbb24ed7b240714aa0ea14d57639919b7;hp=e5e2e3a3ac67a9e515411c7e03d449db59d9a5c0;hb=d736260385a689b5c77d8121f48e29440e3adfa4;hpb=af12e5a3ac887cd7dde344f67d9d43688e78e295

diff --git a/Makefile b/Makefile
index e5e2e3a3..39f0e62f 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 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 doc 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 \