Various changes to improve/support Mklinux

Submitted by: Tatsuo Ishii

src/backend/port/linux/dynloader.c

@@ -10,12 +10,14 @@
  *
  *
  * IDENTIFICATION
- *    $Header: /cvsroot/pgsql/src/backend/port/linux/Attic/dynloader.c,v 1.1.1.1 1996/07/09 06:21:44 scrappy Exp $
+ *    $Header: /cvsroot/pgsql/src/backend/port/linux/Attic/dynloader.c,v 1.2 1997/02/06 08:39:40 scrappy Exp $
  *
  *-------------------------------------------------------------------------
  */
 #include <stdio.h>
+#ifdef HAVE_DLD_H
 #include <dld.h>
+#endif
 #include "postgres.h"
 #include "port-protos.h"
 #include "utils/elog.h"
@@ -26,6 +28,10 @@ extern char pg_pathname[];
 void *
 pg_dlopen(char *filename)
 {
+#ifndef HAVE_DLD_H
+  elog(WARN, "dynamic load not supported");
+  return(NULL);
+#else
     static int dl_initialized= 0;
 
     /*
@@ -84,10 +90,15 @@ pg_dlopen(char *filename)
     }
 
     return (void *) strdup(filename);
+#endif
 }
 
 char *
 pg_dlerror()
 {
+#ifndef HAVE_DLD_H
+   return("dynaloader unspported");
+#else
     return dld_strerror(dld_errno);
+#endif
 }

src/backend/port/linux/port-protos.h

@@ -6,7 +6,7 @@
  *
  * Copyright (c) 1994, Regents of the University of California
  *
- * $Id: port-protos.h,v 1.1.1.1 1996/07/09 06:21:44 scrappy Exp $
+ * $Id: port-protos.h,v 1.2 1997/02/06 08:39:53 scrappy Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -22,8 +22,13 @@
 /* dynloader.c */
 
 #ifndef LINUX_ELF
+# ifndef HAVE_DLD_H
+#define pg_dlsym(handle, funcname)	(NULL)
+# define pg_dlclose(handle)		({})
+# else
 #define pg_dlsym(handle, funcname)	((func_ptr) dld_get_func((funcname)))
-#define pg_dlclose(handle)		({ dld_unlink_by_file(handle, 1); free(handle); })
+# define pg_dlclose(handle)		({ dld_unlink_by_file(handle, 1); free(handle); })
+# endif
 #else
 /* #define	pg_dlopen(f)	dlopen(f, 1) */
 #define	pg_dlopen(f)	dlopen(f, 2)

src/configure

@@ -2255,7 +2255,7 @@ else
 fi
 done
 
-for ac_hdr in readline.h history.h
+for ac_hdr in readline.h history.h dld.h
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6

src/configure.in

@@ -120,7 +120,7 @@ dnl Checks for header files.
 AC_HEADER_STDC
 AC_HEADER_SYS_WAIT
 AC_CHECK_HEADERS(limits.h unistd.h termios.h values.h sys/select.h)
-AC_CHECK_HEADERS(readline.h history.h)
+AC_CHECK_HEADERS(readline.h history.h dld.h)
 
 dnl Checks for typedefs, structures, and compiler characteristics.
 AC_C_CONST

src/include/config.h.in

@@ -32,6 +32,9 @@
 /* Set to 1 if you have <history.h> */
 #undef HAVE_HISTORY
 
+/* Set to 1 if you have <dld.h> */
+#undef HAVE_DLD_H
+
 /* Set to 1 if you have isinf() */
 #undef HAVE_ISINF
 
@@ -162,9 +165,11 @@
 */
 #  define JMP_BUF
 #  define USE_POSIX_TIME
-#  define NEED_I386_TAS_ASM
-#  define HAS_TEST_AND_SET
-   typedef unsigned char slock_t;
+#  if !defined(PPC)
+#    define NEED_I386_TAS_ASM
+#    define HAS_TEST_AND_SET
+     typedef unsigned char slock_t;
+#  endif
 #endif
 
 #if defined(nextstep)