build: Fix instantiation of 'guix-daemon.service' when builddir != srcdir.

* daemon.am (etc/guix-daemon.service): Add $(MKDIR_P) invocation.  Add
  $(srcdir) when referring to the source file.

1 files changed, 3 insertions, 2 deletions

diff --git a/daemon.am b/daemon.am
index 6a031a15b06..f2cb0a499e8 100644
--- a/daemon.am
+++ b/daemon.am
@@ -186,8 +186,9 @@ nodist_systemdservice_DATA = etc/guix-daemon.service
 
 etc/guix-daemon.service: etc/guix-daemon.service.in     \
                          $(top_builddir)/config.status
-        $(SED) -e 's|@''bindir''@|$(bindir)|' <         \
-               "etc/guix-daemon.service.in" > "$@.tmp"
+        $(MKDIR_P) "`dirname "$@"`"
+        $(SED) -e 's|@''bindir''@|$(bindir)|' <                         \
+               "$(srcdir)/etc/guix-daemon.service.in" > "$@.tmp"
         mv "$@.tmp" "$@"
 
 EXTRA_DIST +=                                   \