Remove lorder(1) and tsort(1) stuff, because it is not needed on modern
systems and makes problems under some platforms (e.g. older Linux).

--- src/Makefile.global.in.orig	Thu Sep  5 00:54:18 2002
+++ src/Makefile.global.in	Tue Jul  1 17:17:25 2003
@@ -193,7 +193,7 @@
 LDREL = -r
 LDOUT = -o
 RANLIB = @RANLIB@
-LORDER = @LORDER@
+MK_NO_LORDER= true
 X = @EXEEXT@
 
 # Perl 
--- src/makefiles/Makefile.freebsd.orig	Wed Aug 29 21:14:40 2001
+++ src/makefiles/Makefile.freebsd	Tue Jul  1 17:23:00 2003
@@ -16,7 +16,7 @@
 	$(LD) $(LDREL) $(LDOUT) $<.obj -x $<
 	@echo building shared object $@
 	@rm -f $@.pic
-	@${AR} cq $@.pic `lorder $<.obj | tsort`
+	@${AR} cq $@.pic
 	${RANLIB} $@.pic
 	@rm -f $@
 	$(LD) -x -Bshareable -Bforcearchive -o $@ $@.pic
--- src/makefiles/Makefile.openbsd.orig	Wed Aug 29 21:14:40 2001
+++ src/makefiles/Makefile.openbsd	Tue Jul  1 17:23:12 2003
@@ -16,7 +16,7 @@
 	$(LD) $(LDREL) $(LDOUT) $<.obj -x $<
 	@echo building shared object $@
 	@rm -f $@.pic
-	@${AR} cq $@.pic `lorder $<.obj | tsort`
+	@${AR} cq $@.pic
 	${RANLIB} $@.pic
 	@rm -f $@
 	$(LD) -x -Bshareable -Bforcearchive \
--- src/makefiles/Makefile.netbsd.orig	Wed Aug 29 21:14:40 2001
+++ src/makefiles/Makefile.netbsd	Tue Jul  1 17:23:39 2003
@@ -18,7 +18,7 @@
 	$(LD) $(LDREL) $(LDOUT) $<.obj -x $<
 	@echo building shared object $@
 	@rm -f $@.pic
-	@${AR} cq $@.pic `lorder $<.obj | tsort`
+	@${AR} cq $@.pic
 	${RANLIB} $@.pic
 	@rm -f $@
 	$(LD) -x -Bshareable -Bforcearchive \
Index: src/template/freebsd
--- src/template/freebsd.orig	2004-12-02 19:11:40.000000000 +0100
+++ src/template/freebsd	2005-02-16 17:09:09.617038264 +0100
@@ -1,3 +1,3 @@
 case $host_cpu in
-  alpha*)   CFLAGS="-O";;  # alpha has problems with -O2
+  alpha*)   CFLAGS=`echo "x$CFLAGS" | sed -e 's;^x;;' -e 's;-O2;-O;'`;;  # alpha has problems with -O2
 esac
Index: src/template/linux
--- src/template/linux.orig	2004-12-02 19:11:40.000000000 +0100
+++ src/template/linux	2005-02-16 17:08:13.160599508 +0100
@@ -1,2 +1,2 @@
 # Force _GNU_SOURCE on; plperl is broken with Perl 5.8.0 otherwise
-CPPFLAGS="-D_GNU_SOURCE"
+CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"

-----------------------------------------------------------------------------

A small patch to allow DSO-based PostgreSQL extensions to be more
flexible by providing initialization and finishing hooks. This patch was
contributed by Ralf S. Engelschall to the upstream vendor in August 2006
and taken over by the upstream vendor for inclusion into the next major
PostgreSQL release.

http://groups.google.com/group/pgsql.hackers/browse_frm/thread/ce7858f865a6fecd/19a3f052656f3a69?tvc=1&q=PG_init#19a3f052656f3a69

Index: src/backend/utils/fmgr/dfmgr.c
--- src/backend/utils/fmgr/dfmgr.c.orig	2005-10-15 04:49:32 +0200
+++ src/backend/utils/fmgr/dfmgr.c	2006-10-07 11:53:58 +0200
@@ -60,6 +60,10 @@
 static char *expand_dynamic_library_name(const char *name);
 static char *substitute_libpath_macro(const char *name);
 
+/* types for PostgreSQL-specific DSO init/fini functions */
+typedef void (*PG_init_t)(void);
+typedef void (*PG_fini_t)(void);
+
 /*
  * Load the specified dynamic-link library file, and look for a function
  * named funcname in it.  (funcname can be NULL to just load the file.)
@@ -77,6 +81,7 @@
 load_external_function(char *filename, char *funcname,
 					   bool signalNotFound, void **filehandle)
 {
+	PG_init_t *PG_init;
 	DynamicFileList *file_scanner;
 	PGFunction	retval;
 	char	   *load_error;
@@ -146,6 +151,13 @@
 							fullname, load_error)));
 		}
 
+		/* optionally give the DSO a chance to initialize by calling a
+		   PostgreSQL-specific (and this way portable) "_PG_init" function
+		   similar to what dlopen(3) implicitly does with "_init" on some
+		   Unix platforms. */
+		if ((PG_init = (PG_init_t *)pg_dlsym(file_scanner->handle, "_PG_init")) != NULL)
+		        (*PG_init)();
+
 		/* OK to link it into list */
 		if (file_list == NULL)
 			file_list = file_scanner;
@@ -187,6 +199,7 @@
 void
 load_file(char *filename)
 {
+	PG_fini_t *PG_fini;
 	DynamicFileList *file_scanner,
 			   *prv,
 			   *nxt;
@@ -223,6 +236,14 @@
 				prv->next = nxt;
 			else
 				file_list = nxt;
+
+			/* optionally give the DSO a chance to finish by calling
+			   a PostgreSQL-specific (and this way portable) "_PG_fini"
+			   function similar to what dlopen(3) implicitly does with
+			   "_fini" on some Unix platforms. */
+			if ((PG_fini = (PG_fini_t *)pg_dlsym(file_scanner->handle, "_PG_fini")) != NULL)
+				(*PG_fini)();
+
 			clear_external_function_hash(file_scanner->handle);
 			pg_dlclose(file_scanner->handle);
 			free((char *) file_scanner);