patch for SVR5-based systems.

[Robert Lipe]

This cleans up a wierdness when linking a native object was built with
-g with EGCS.   It also activates DWARF-2 debugging for these two targets.


* i386/sysv5.h: New file to describe UnixWare7/SVR5.
* configure.in (i?86-UnixWare7*-sysv): Use it.
* i386/udk.h: Use sysv5.h.   Activate Dwarf-2.


Index: configure.in
===================================================================
RCS file: /egcs/carton/cvsfiles/egcs/gcc/configure.in,v
retrieving revision 1.228
diff -u -p -r1.228 configure.in
--- configure.in	1999/03/26 16:04:05	1.228
+++ configure.in	1999/03/28 02:04:48
@@ -1368,7 +1368,7 @@ changequote(,)dnl
 changequote([,])dnl
                xm_file="xm-alloca.h xm-siglist.h ${xm_file}"
                xm_defines="USG POSIX"
-               tm_file=i386/sysv4.h
+               tm_file=i386/sysv5.h
                if test x$stabs = xyes
                then
                        tm_file="${tm_file} dbx.h"
Index: config/i386/sysv5.h
===================================================================
RCS file: sysv5.h
diff -N sysv5.h
--- /dev/null	Sat Dec  5 20:30:03 1998
+++ sysv5.h	Sat Mar 27 18:04:48 1999
@@ -0,0 +1,12 @@
+/* Target definitions for SystemV Release 5 (i.e. UnixWare 7) */
+
+#include "i386/sysv4.h"
+
+/* Dwarf2 is supported by native debuggers  */
+
+#undef PREFERRED_DEBUGGING_TYPE
+#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
+
+/* Add -lcrt for Dwarf2 abbreviation table */
+#undef  LIB_SPEC
+#define LIB_SPEC "%{!shared:%{!symbolic:-lc -lcrt}}"
Index: config/i386/udk.h
===================================================================
RCS file: /egcs/carton/cvsfiles/egcs/gcc/config/i386/udk.h,v
retrieving revision 1.2
diff -u -p -r1.2 udk.h
--- udk.h	1998/12/16 21:04:42	1.2
+++ udk.h	1999/03/28 02:04:48
@@ -6,7 +6,7 @@
 /* We're very much the SVR4 target with "/udk" prepended to everything that's
    interesting */
 
-#include "i386/sysv4.h"
+#include "i386/sysv5.h"
 
 #undef MD_EXEC_PREFIX
 #define MD_EXEC_PREFIX 		"/udk/usr/ccs/bin/" 
@@ -14,10 +14,8 @@
 #undef MD_STARTFILE_PREFIX
 #define MD_STARTFILE_PREFIX 	"/udk/usr/ccs/lib/" 
 
-#if 0 /* Later. */
 #undef PREFERRED_DEBUGGING_TYPE
 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG 
-#endif
 
 #define STANDARD_INCLUDE_DIR	"/udk/usr/include"