Recreate ecpg_config.h with a stamp file created by config.status, same

way pg_config.h is handled.  This avoids reruns of config.status on every
build, if configure has been rerun.

configure

@@ -28349,6 +28349,7 @@ echo "$as_me: WARNING: *** link for $FILE -- please fix by hand" >&2;}
 # Update timestamp for pg_config.h (see Makefile.global)
 echo >src/include/stamp-h
  ;;
+    "src/interfaces/ecpg/include/ecpg_config.h":H) echo >src/interfaces/ecpg/include/stamp-h ;;
 
   esac
 done # for ac_tag

configure.in

 dnl Process this file with autoconf to produce a configure script.
-dnl $PostgreSQL: pgsql/configure.in,v 1.588 2009/01/21 10:30:02 mha Exp $
+dnl $PostgreSQL: pgsql/configure.in,v 1.589 2009/01/22 22:27:12 petere Exp $
 dnl
 dnl Developers, please strive to achieve this order:
 dnl
@@ -1841,7 +1841,8 @@ AC_CONFIG_HEADERS([src/include/pg_config.h],
 echo >src/include/stamp-h
 ])
 
-AC_CONFIG_HEADERS([src/interfaces/ecpg/include/ecpg_config.h])
+AC_CONFIG_HEADERS([src/interfaces/ecpg/include/ecpg_config.h],
+                  [echo >src/interfaces/ecpg/include/stamp-h])
 
 AC_OUTPUT
 

src/Makefile.global.in

 # -*-makefile-*-
-# $PostgreSQL: pgsql/src/Makefile.global.in,v 1.251 2009/01/05 10:25:59 petere Exp $
+# $PostgreSQL: pgsql/src/Makefile.global.in,v 1.252 2009/01/22 22:27:13 petere Exp $
 
 #------------------------------------------------------------------------------
 # All PostgreSQL makefiles include this file and use the variables it sets,
@@ -498,9 +498,11 @@ $(top_builddir)/src/include/pg_config.h: $(top_builddir)/src/include/stamp-h
 $(top_builddir)/src/include/stamp-h: $(top_srcdir)/src/include/pg_config.h.in $(top_builddir)/config.status
 	cd $(top_builddir) && ./config.status src/include/pg_config.h
 
-# Also remake ecpg_config.h from ecpg_config.h.in if the latter changed. Values in it can
-# only change if pg_config.h has changed, so include this file to its dependencies.
-$(top_builddir)/src/interfaces/ecpg/include/ecpg_config.h: $(top_builddir)/src/include/pg_config.h $(top_builddir)/src/interfaces/ecpg/include/ecpg_config.h.in $(top_builddir)/config.status
+# Also remake ecpg_config.h from ecpg_config.h.in if the latter changed, same 
+# logic as above.
+$(top_builddir)/src/interfaces/ecpg/include/ecpg_config.h: $(top_builddir)/src/interfaces/ecpg/include/stamp-h
+
+ $(top_builddir)/src/interfaces/ecpg/include/stamp-h: $(top_builddir)/src/interfaces/ecpg/include/ecpg_config.h.in $(top_builddir)/config.status
 	cd $(top_builddir) && ./config.status src/interfaces/ecpg/include/ecpg_config.h
 
 # When configure changes, rerun configure with the same options as

src/interfaces/ecpg/include/Makefile

@@ -31,5 +31,4 @@ uninstall:
 	rm -f '$(DESTDIR)$(includedir)'/$(notdir $(ecpg_config_h))
 
 distclean maintainer-clean:
-	rm -f ecpg_config.h
-
+	rm -f ecpg_config.h stamp-h