# HG changeset patch
# User Mike Miller <mtmiller@octave.org>
# Date 1461100651 25200
# Node ID 43d9eec519bd3878e2d4b7dbe2f74199c30acab4
# Parent  b5d9b95d1e1a875bc2cad245a546f892f834d813
build: generate HG-ID even if hg is not installed

* Makefile.am (HG-ID): Fill with "unknown" if .hg is present but the hg
command fails.

diff -r b5d9b95d1e1a -r 43d9eec519bd Makefile.am
--- a/Makefile.am	Tue Apr 19 15:27:19 2016 +0200
+++ b/Makefile.am	Tue Apr 19 14:17:31 2016 -0700
@@ -289,11 +289,11 @@
 HG-ID:
 	$(AM_V_GEN)rm -f $@-t && \
 	if [ -d $(srcdir)/.hg ]; then \
-	  ( cd $(srcdir) && hg identify --id ) > $@-t && \
+	  ( cd $(srcdir) && hg identify --id || echo "unknown" ) > $@-t && \
 	  $(simple_move_if_change_rule); \
 	elif [ ! -f $(srcdir)/HG-ID ]; then \
 	  echo "$(srcdir)/HG-ID is missing!" 1>&2; \
-	  echo "unknown" >& $@-t && mv $@-t $@; \
+	  echo "unknown" > $@-t && mv $@-t $@; \
 	else \
 	  echo "preserving existing HG-ID file" 1>&2; \
 	  $(cp_update_rule); \