Fix x86_64-pc-linux-gnu and aarch64-pc-linux-gnu build (gcc-mirror#8)

* * fix undefined references in libgfortran

* * fix internal compiler error in gfortran

* Revert "* fix internal compiler error in gfortran"

This reverts commit 4c81782ca9e75120eb91e1b6b89559f277233621.

* * revert changes for undefined references in gfortran

* Fix build on x86_64-pc-linux-gnu when host is aarch64-w64-mingw32 (gcc-mirror#6)

* Fix x86_64-pc-linux-gnu and aarch64-pc-linux-gnu build

---------

Co-authored-by: Evgeny Karpov <eukarpov@gmail.com>

gcc/common/config/aarch64/aarch64-common.cc

@@ -441,6 +441,8 @@ aarch64_rewrite_mcpu (int argc, const char **argv)
   return aarch64_rewrite_selected_cpu (argv[argc - 1]);
 }
 
+#if TARGET_64BIT_MS_ABI
+
 /* Implement TARGET_EXCEPT_UNWIND_INFO.  */
 
 static enum unwind_info_type
@@ -465,6 +467,8 @@ aarch64_except_unwind_info (struct gcc_options *opts)
 #undef  TARGET_EXCEPT_UNWIND_INFO
 #define TARGET_EXCEPT_UNWIND_INFO  aarch64_except_unwind_info
 
+#endif // TARGET_64BIT_MS_ABI
+
 struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER;
 
 #undef AARCH64_CPU_NAME_LENGTH

gcc/config/aarch64/aarch64.cc

@@ -2908,7 +2908,9 @@ get_dllimport_decl (tree decl, bool beimport)
   if (!beimport)
     {
       SYMBOL_REF_FLAGS (rtl) |= SYMBOL_FLAG_EXTERNAL;
+#if defined(TARGET_64BIT_MS_ABI)
       i386_pe_record_stub (name);
+#endif // TARGET_64BIT_MS_ABI
     }
 
   rtl = gen_const_mem (Pmode, rtl);
@@ -18454,8 +18456,10 @@ aarch64_override_options_after_change_1 (struct gcc_options *opts)
     flag_mrecip_low_precision_sqrt = true;
 
   /* Enable unwind tables for MS */
-  if (TARGET_64BIT_MS_ABI && opts->x_flag_unwind_tables == 0)
+#if defined(TARGET_64BIT_MS_ABI)
+  if (opts->x_flag_unwind_tables == 0)
     opts->x_flag_unwind_tables = 1;
+#endif // TARGET_64BIT_MS_ABI
 }
 
 /* 'Unpack' up the internal tuning structs and update the options