[ovs-dev] [PATCH] rhel: Fix use of $< in ordinary Make rules.

[Ben Pfaff]

POSIX only allows $< in inference rules, so avoid it for these target
rules.

Also, add a header to the generated spec files to remind developers that
they are generated.
---
 Makefile.am      |    1 +
 rhel/automake.mk |    9 ++++++---
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/Makefile.am b/Makefile.am
index 5e449d6..476f18f 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -82,6 +82,7 @@ EXTRA_DIST += \
 	soexpand.pl
 
 ro_c = echo '/* -*- mode: c; buffer-read-only: t -*- */'
+ro_shell = printf '\043 Generated automatically -- do not modify!    -*- buffer-read-only: t -*-\n' 
 
 SUFFIXES += .in
 .in:
diff --git a/rhel/automake.mk b/rhel/automake.mk
index d4d5961..21f28c6 100644
--- a/rhel/automake.mk
+++ b/rhel/automake.mk
@@ -20,11 +20,14 @@ EXTRA_DIST += \
 
 
 $(srcdir)/rhel/openvswitch-kmod-rhel5.spec: rhel/openvswitch-kmod-rhel5.spec.in $(top_builddir)/config.status
-	sed -e 's,[@]VERSION[@],$(VERSION),g' < $< > $@
+	($(ro_shell) && sed -e 's,[@]VERSION[@],$(VERSION),g') \
+		< $(srcdir)/rhel/openvswitch-kmod-rhel5.spec.in > $@
 
 $(srcdir)/rhel/openvswitch-kmod-rhel6.spec: rhel/openvswitch-kmod-rhel6.spec.in $(top_builddir)/config.status
-
-	sed -e 's,[@]VERSION[@],$(VERSION),g' < $< > $@
+	($(ro_shell) && sed -e 's,[@]VERSION[@],$(VERSION),g') \
+		< $(srcdir)/rhel/openvswitch-kmod-rhel6.spec.in > $@
 
 $(srcdir)/rhel/openvswitch.spec: rhel/openvswitch.spec.in $(top_builddir)/config.status
 	sed -e 's,[@]VERSION[@],$(VERSION),g' < $< > $@
+	($(ro_shell) && sed -e 's,[@]VERSION[@],$(VERSION),g') \
+		< $(srcdir)/rhel/openvswitch.spec.in > $@
-- 
1.7.4.4