darwin.h (GCC_NAME): Remove, no longer used.

        * config/darwin.h (GCC_NAME): Remove, no longer used.
        (NO_MATH_LIBRARY): Ditto.
        (MATH_LIBRARY): Define to emptiness.
        (DWARF2_DEBUGGING_INFO): Define.
        (PREFERRED_DEBUGGING_TYPE): Define.
        (EXTRA_SECTION_FUNCTIONS): Add darwin_exception_section.
        (EXCEPTION_SECTION): Define.
        (ASM_PREFERRED_EH_DATA_FORMAT): Define.
        * config/darwin.c (darwin_encode_section_info): Handle case of
        DECL_INITIAL being error_mark_node.

From-SVN: r46300

gcc/ChangeLog

+2001-10-16  Stan Shebs  <shebs@apple.com>
+
+	* config/darwin.h (GCC_NAME): Remove, no longer used.
+	(NO_MATH_LIBRARY): Ditto.
+	(MATH_LIBRARY): Define to emptiness.
+	(DWARF2_DEBUGGING_INFO): Define.
+	(PREFERRED_DEBUGGING_TYPE): Define.
+	(EXTRA_SECTION_FUNCTIONS): Add darwin_exception_section.
+	(EXCEPTION_SECTION): Define.
+	(ASM_PREFERRED_EH_DATA_FORMAT): Define.
+	* config/darwin.c (darwin_encode_section_info): Handle case of
+	DECL_INITIAL being error_mark_node.
+
 2001-10-16  Richard Henderson  <rth@redhat.com>
 
 	* alpha.c (current_file_function_operand): Don't fail for profiling.

gcc/config/darwin.c

@@ -1014,7 +1014,8 @@ darwin_encode_section_info (decl)
       && !DECL_EXTERNAL (decl)
       && ((TREE_STATIC (decl)
 	   && (!DECL_COMMON (decl) || !TREE_PUBLIC (decl)))
-	  || DECL_INITIAL (decl)))
+	  || (DECL_INITIAL (decl)
+	      && DECL_INITIAL (decl) != error_mark_node)))
     defined = 1;
 
   if (TREE_CODE (decl) == FUNCTION_DECL)

gcc/config/darwin.h

@@ -35,14 +35,11 @@ Boston, MA 02111-1307, USA.  */
    leave it undefined and expect system builders to set configure args
    correctly.  */
 
-/* Name of the command that invokes the compiler - used in g++.c.  */
+/* Suppress g++ attempt to link in the math library automatically.
+   (Some Darwin versions have a libm, but they seem to cause problems
+   for C++ executables.)  */
 
-#undef  GCC_NAME
-#define GCC_NAME "cc"
-
-/* Never try linking with -lm - used in g++.c.  */
-
-#define NO_MATH_LIBRARY
+#define MATH_LIBRARY ""
 
 /* We have atexit.  */
 
@@ -126,6 +123,12 @@ Boston, MA 02111-1307, USA.  */
 
 #define DBX_DEBUGGING_INFO
 
+/* Also enable Dwarf 2 as an option.  */
+
+#define DWARF2_DEBUGGING_INFO
+
+#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
+
 /* When generating stabs debugging, use N_BINCL entries.  */
 
 #define DBX_USE_BINCL
@@ -349,6 +352,7 @@ do { if (!strcmp (alias_name, name))					\
   in_machopic_lazy_symbol_ptr,				\
   in_machopic_symbol_stub,				\
   in_machopic_picsymbol_stub,				\
+  in_darwin_exception, \
   num_sections
 
 #undef	EXTRA_SECTION_FUNCTIONS
@@ -453,6 +457,9 @@ SECTION_FUNCTION (machopic_symbol_stub_section,		\
 SECTION_FUNCTION (machopic_picsymbol_stub_section,	\
 		in_machopic_picsymbol_stub,		\
 		".picsymbol_stub", 0)      		\
+SECTION_FUNCTION (darwin_exception_section,		\
+		in_darwin_exception,			\
+		".section __TEXT,__gcc_except_tab", 0)	\
 							\
 void						\
 objc_section_init ()				\
@@ -774,6 +781,11 @@ enum machopic_addr_class {
       }								\
   } while (0)
 
+#define EXCEPTION_SECTION() darwin_exception_section ()
+
+#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)  \
+  (((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)
+
 #define REGISTER_TARGET_PRAGMAS(PFILE)                          \
   do {                                                          \
     cpp_register_pragma (PFILE, 0, "mark", darwin_pragma_ignore);  \