[Emacs-diffs] trunk r116012: * Makefile.in: Comment.

[Glenn Morris]

------------------------------------------------------------
revno: 116012
revision-id: address@hidden
parent: address@hidden
committer: Glenn Morris <address@hidden>
branch nick: trunk
timestamp: Mon 2014-01-13 14:44:04 -0500
message:
  * Makefile.in: Comment.
modified:
  Makefile.in                    makefile.in-20091113204419-o5vbwnq5f7feedwu-446

=== modified file 'Makefile.in'
--- a/Makefile.in       2014-01-12 18:02:45 +0000
+++ b/Makefile.in       2014-01-13 19:44:04 +0000
@@ -373,6 +373,11 @@
 # file src/foo.c forces dumping a new bootstrap-emacs, then re-byte-compiling
 # all preloaded elisp files, and only then dump the actual src/emacs, which
 # is not wrong, but is overkill in 99.99% of the cases.
+#
+# Note the use of single quotes in the value of vcswitness.
+# This passes an unexpanded $scrdir to src's Makefile, which then
+# expands it using its own value of srcdir (which points to the
+# source directory of src/).
 src: Makefile FRC
        dirstate='.bzr/checkout/dirstate';                              \
        vcswitness='$$(srcdir)/../'$$dirstate;                          \