diff --git a/sysdeps/solaris/ChangeLog b/sysdeps/solaris/ChangeLog
index 565303fd..6a9f8aec 100644
--- a/sysdeps/solaris/ChangeLog
+++ b/sysdeps/solaris/ChangeLog
@@ -1,3 +1,9 @@
+1999-06-07  Drazen Kacar  <dave@srce.hr>
+
+	* glibtop_machine.h, open.c, procargs.c, proclist.c, procmap.c:
+	  Solaris 2.5 & 2.5.1 portability fixes, based on patches
+	  from Steve Murphy <murf@e-tools.com>.
+
 1999-05-30  Drazen Kacar  <dave@srce.hr>
 
 	* procargs.c: Fixed bug in calculation of process argument list.
diff --git a/sysdeps/solaris/glibtop_machine.h b/sysdeps/solaris/glibtop_machine.h
index b228fe13..bb14cf99 100644
--- a/sysdeps/solaris/glibtop_machine.h
+++ b/sysdeps/solaris/glibtop_machine.h
@@ -64,9 +64,13 @@ struct _glibtop_machine
     int ticks;			/* clock ticks, as returned by sysconf() */
     unsigned long long boot;	/* boot time, although it's ui32 in kstat */
     void *libproc;		/* libproc handle */
+#if GLIBTOP_SOLARIS_RELEASE >= 560
     void (*objname)(void *, uintptr_t, const char *, size_t);
     struct ps_prochandle *(*pgrab)(pid_t, int, int *);
     void (*pfree)(void *);
+#else
+    void *filler[3];
+#endif
 };
 
 END_LIBGTOP_DECLS
diff --git a/sysdeps/solaris/open.c b/sysdeps/solaris/open.c
index 7ee7cb9e..b2c8f999 100644
--- a/sysdeps/solaris/open.c
+++ b/sysdeps/solaris/open.c
@@ -205,6 +205,8 @@ glibtop_open_s (glibtop *server, const char *program_name,
 
     /* Now let's have a bit of magic dust... */
 
+#if GLIBTOP_SOLARIS_RELEASE >= 560
+
     dl = dlopen("/usr/lib/libproc.so", RTLD_LAZY);
     server->machine.libproc = dl;
     if(dl)
@@ -226,5 +228,6 @@ glibtop_open_s (glibtop *server, const char *program_name,
        server->machine.pgrab = NULL;
        server->machine.pfree = NULL;
     }
+#endif
     server->machine.me = getpid();
 }
diff --git a/sysdeps/solaris/procargs.c b/sysdeps/solaris/procargs.c
index 2e413b29..ac2721d3 100644
--- a/sysdeps/solaris/procargs.c
+++ b/sysdeps/solaris/procargs.c
@@ -43,7 +43,11 @@ char *
 glibtop_get_proc_args_s (glibtop *server, glibtop_proc_args *buf,
 			 pid_t pid, unsigned max_len)
 {
+#ifdef HAVE_PROCFS_H
    	struct psinfo pinfo;
+#else
+	struct prpsinfo pinfo;
+#endif
 	int len, i;
 	char *ret, *p;
 
diff --git a/sysdeps/solaris/proclist.c b/sysdeps/solaris/proclist.c
index de79cf4a..192e2673 100644
--- a/sysdeps/solaris/proclist.c
+++ b/sysdeps/solaris/proclist.c
@@ -77,8 +77,11 @@ glibtop_get_proclist_s (glibtop *server, glibtop_proclist *buf,
 	{
 	   if(mask)
 	   {
+#ifdef HAVE_PROCFS_H
 	      struct psinfo psinfo;
-
+#else
+	      struct prpsinfo psinfo;
+#endif
 	      if(glibtop_get_proc_data_psinfo_s(server, &psinfo, pid))
 		 return NULL;
 	      if(mask & GLIBTOP_EXCLUDE_IDLE && !psinfo.pr_pctcpu)
diff --git a/sysdeps/solaris/procmap.c b/sysdeps/solaris/procmap.c
index 27b50d04..daa2ba00 100644
--- a/sysdeps/solaris/procmap.c
+++ b/sysdeps/solaris/procmap.c
@@ -57,7 +57,12 @@ glibtop_map_entry *
 glibtop_get_proc_map_s (glibtop *server, glibtop_proc_map *buf,	pid_t pid)
 {
    	int fd, i, nmaps, pr_err, heap;
+#if GLIBTOP_SOLARIS_RELEASE >= 560
 	prxmap_t *maps;
+	struct ps_prochandle *Pr;
+#else
+	prmap_t *maps;
+#endif
 
 	/* A few defines, to make it shorter down there */
 
@@ -67,7 +72,6 @@ glibtop_get_proc_map_s (glibtop *server, glibtop_proc_map *buf,	pid_t pid)
 # define OFFSET  pr_off
 #endif
 
-	struct ps_prochandle *Pr;
 	glibtop_map_entry *entry;
 	struct stat inode;
 	char buffer[BUFSIZ];
@@ -109,7 +113,7 @@ glibtop_get_proc_map_s (glibtop *server, glibtop_proc_map *buf,	pid_t pid)
 		s_close(fd);
 		return NULL;
 	}
-	maps = alloca((nmaps + 1) * sizeof(prxmap_t));
+	maps = alloca((nmaps + 1) * sizeof(prmap_t));
 	if(ioctl(fd, PIOCMAP, maps) < 0)
 	{
 	   	glibtop_warn_io_r(server, "ioctl(%s, PIOCMAP)", buffer);
@@ -126,21 +130,28 @@ glibtop_get_proc_map_s (glibtop *server, glibtop_proc_map *buf,	pid_t pid)
 
 	memset(entry, 0, nmaps * sizeof(glibtop_map_entry));
 
+#if GLIBTOP_SOLARIS_RELEASE >= 560
+
 	if(server->machine.objname && server->machine.pgrab &&
 	   server->machine.pfree)
 	   Pr = (server->machine.pgrab)(pid, 1, &pr_err);
+#endif
 	for(heap = 0,i = 0; i < nmaps; ++i)
 	{
 	   	int len;
 
 	   	entry[i].start = maps[i].pr_vaddr;
 		entry[i].end = maps[i].pr_vaddr + maps[i].pr_size;
+
+#if GLIBTOP_SOLARIS_RELEASE >= 560
+
 		if(maps[i].pr_dev != PRNODEV)
 		{
 		   entry[i].device = maps[i].pr_dev;
 		   entry[i].inode = maps[i].pr_ino;
 		   entry[i].flags |= _glibtop_sysdeps_map_device;
 		}
+#endif
 		entry[i].offset = maps[i].OFFSET;
 		if(maps[i].pr_mflags & MA_READ)
 		   	entry[i].perm |= GLIBTOP_MAP_PERM_READ;
@@ -153,6 +164,9 @@ glibtop_get_proc_map_s (glibtop *server, glibtop_proc_map *buf,	pid_t pid)
 		else
 		   	entry[i].perm |= GLIBTOP_MAP_PERM_PRIVATE;
 		entry[i].flags = _glibtop_sysdeps_map_entry;
+
+#if GLIBTOP_SOLARIS_RELEASE >= 560
+
 		if(maps[i].pr_mflags & MA_ANON)
 		{
 		   if(!heap)
@@ -179,9 +193,14 @@ glibtop_get_proc_map_s (glibtop *server, glibtop_proc_map *buf,	pid_t pid)
 			 entry[i].flags |= (1L << GLIBTOP_MAP_ENTRY_FILENAME);
 		      }
 		   }
+#endif
 	}
+
+#if GLIBTOP_SOLARIS_RELEASE >= 560
+
 	if(Pr)
 	   	server->machine.pfree(Pr);
+#endif
 	buf->flags = _glibtop_sysdeps_proc_map;
 	s_close(fd);
 	return entry;