* install the default hostfile and mca params files only if there isn't

already one there.  Credit to Jeff from LAM for the code

This commit was SVN r3611.

etc/Makefile.am

@@ -4,7 +4,25 @@
 
 include $(top_srcdir)/config/Makefile.options
 
-EXTRA_DIST = $(sysconf_DATA)
+EXTRA_DIST = \
+		openmpi-default-hostfile \
+		openmpi-mca-params.conf
 
-sysconf_DATA = openmpi-mca-params.conf \
-		openmpi-default-hostfile
+# Steal a little trickery from a generated Makefile to only install
+# lam-bhost.def if one does not already exist at the target.
+
+install-data-local:
+	@ p="openmpi-mca-params.conf openmpi-default-hostfile"; \
+	for file in $$p; do \
+	  if test -f $(DESTDIR)$(sysconfdir)/$$file; then \
+	    echo "******************************* WARNING ************************************"; \
+	    echo "*** Not installing new $$file over existing file in:"; \
+	    echo "***   $(DESTDIR)$(sysconfdir)/$$file"; \
+	    echo "******************************* WARNING ************************************"; \
+	  else \
+	    if test -f "$$file"; then d=; else d="$(srcdir)/"; fi; \
+	    f="`echo $$file | sed -e 's|^.*/||'`"; \
+	    echo " $(INSTALL_DATA) $$d$$file $(DESTDIR)$(sysconfdir)/$$f"; \
+	    $(INSTALL_DATA) $$d$$file $(DESTDIR)$(sysconfdir)/$$f; \
+	  fi; \
+	done