Added a SVR4 port

---

below my signature, there are a coupls of diffs and files in a shell
archive, which were needed to build postgres95 1.02 on Siemens Nixdorfs
MIPS based SINIX systems. Except for the compiler switches "-W0" and
"-LD-Blargedynsym" these diffs should also apply for other SVR4 based
systems. The changes in "Makefile.global" and "genbki.sh" can probably
be ignored (I needed gawk, to make the script run).

There is one bugfix thou. In "src/backend/parser/sysfunc.c" the
function in this file didn't honor the EUROPEAN_DATES ifdef.

---

Submitted by:  Frank Ridderbusch <ridderbusch.pad@sni.de>

1 files changed, 38 insertions, 0 deletions

diff --git a/src/backend/port/svr4/port-protos.h b/src/backend/port/svr4/port-protos.h
new file mode 100644
index 00000000000..4b992570acd
--- /dev/null
+++ b/src/backend/port/svr4/port-protos.h
@@ -0,0 +1,38 @@
+/*-------------------------------------------------------------------------
+ *
+ * port-protos.h--
+ *    port-specific prototypes for Intel x86/Intel SVR4
+ *
+ *
+ * Copyright (c) 1994, Regents of the University of California
+ *
+ * port-protos.h,v 1.2 1995/03/17 06:40:18 andrew Exp
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PORT_PROTOS_H
+#define PORT_PROTOS_H
+
+#include <dlfcn.h>
+#include "fmgr.h"			/* for func_ptr */
+#include "utils/dynamic_loader.h"
+
+/* dynloader.c */
+/*
+ * Dynamic Loader on Intel x86/Intel SVR4.
+ *
+ * this dynamic loader uses the system dynamic loading interface for shared 
+ * libraries (ie. dlopen/dlsym/dlclose). The user must specify a shared
+ * library as the file to be dynamically loaded.
+ *
+ */
+#define pg_dlopen(f)	dlopen(f,RTLD_LAZY)
+#define	pg_dlsym	dlsym
+#define	pg_dlclose	dlclose
+#define	pg_dlerror	dlerror
+
+/* port.c */
+extern long random(void);
+extern void srandom(int seed);
+
+#endif /* PORT_PROTOS_H */