Make 0-series device specs work with older versions of avr-gcc.

	PR target/92545
	* config/avr/specs.h (LINK_SPEC) <%(link_pm_base_address)>: Remove.
	* config/avr/gen-avr-mmcu-specs.c (print_mcu)
	<*link_pm_base_address>: Don't write spec.
	<*link_arch>: Add --defsym=__RODATA_PM_OFFSET__= as needed.

From-SVN: r278478

gcc/ChangeLog

+2019-11-20  Georg-Johann Lay  <avr@gjlay.de>
+
+	Make 0-series device specs work with older versions of avr-gcc.
+
+	PR target/92545
+	* config/avr/specs.h (LINK_SPEC) <%(link_pm_base_address)>: Remove.
+	* config/avr/gen-avr-mmcu-specs.c (print_mcu)
+	<*link_pm_base_address>: Don't write spec.
+	<*link_arch>: Add --defsym=__RODATA_PM_OFFSET__= as needed.
+
 2019-11-20  Richard Biener  <rguenther@suse.de>
 
 	PR c/92088

gcc/config/avr/gen-avr-mmcu-specs.c

@@ -253,7 +253,11 @@ print_mcu (const avr_mcu_t *mcu)
 
   fprintf (f, "*link_relax:\n\t%s\n\n", LINK_RELAX_SPEC);
 
-  fprintf (f, "*link_arch:\n\t%s\n\n", LINK_ARCH_SPEC);
+  fprintf (f, "*link_arch:\n\t%s", LINK_ARCH_SPEC);
+  if (is_device
+      && flash_pm_offset)
+    fprintf (f, " --defsym=__RODATA_PM_OFFSET__=0x%x", flash_pm_offset);
+  fprintf (f, "\n\n");
 
   if (is_device)
     {
@@ -270,14 +274,6 @@ print_mcu (const avr_mcu_t *mcu)
       fprintf (f, "\n\n");
     }
 
-  if (is_device
-      && flash_pm_offset)
-    {
-      fprintf (f, "*link_pm_base_address:\n");
-      fprintf (f, "\t--defsym=__RODATA_PM_OFFSET__=0x%x", flash_pm_offset);
-      fprintf (f, "\n\n");
-    }
-
   // Specs known to GCC.
 
   if (is_device)

gcc/config/avr/specs.h

@@ -68,7 +68,6 @@ along with GCC; see the file COPYING3.  If not see
   "%(link_text_start) "                         \
   "%(link_relax) "                              \
   "%(link_pmem_wrap) "                          \
-  "%(link_pm_base_address) "                    \
   "%{shared:%eshared is not supported} "
 
 #undef  LIB_SPEC