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Darwin : Only emit Objective-C section switches for older linkers.

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At one time, the system linkers needed to have at least a dummy
entry for every Objective-C section in use.  This removes the extra
emitted code when it is not needed by the linker.

gcc/ChangeLog:

	* config/darwin.c (output_objc_section_asm_op): Avoid extra
	objective-c section switches unless the linker needs them.
This commit is contained in:
Iain Sandoe 2020-10-03 13:51:29 +01:00
parent ecd616f680
commit bb675539ba
1 changed files with 4 additions and 3 deletions
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7
gcc/config/darwin.c
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@ -136,7 +136,7 @@ output_objc_section_asm_op (const void *directive)
order in the object. The code below implements this by emitting order in the object. The code below implements this by emitting
a section header for each ObjC section the first time that an ObjC a section header for each ObjC section the first time that an ObjC
section is requested. */ section is requested. */
if (! been_here) if (darwin_symbol_stubs && ! been_here)
{ {
section *saved_in_section = in_section; section *saved_in_section = in_section;
static const enum darwin_section_enum tomark[] = static const enum darwin_section_enum tomark[] =
@ -176,20 +176,21 @@ output_objc_section_asm_op (const void *directive)
{ {
objc2_method_names_section, objc2_method_names_section,
objc2_message_refs_section, objc2_message_refs_section,
objc2_selector_refs_section,
objc2_ivar_section,
objc2_classdefs_section, objc2_classdefs_section,
objc2_metadata_section, objc2_metadata_section,
objc2_classrefs_section, objc2_classrefs_section,
objc2_class_names_section, objc2_class_names_section,
objc2_classlist_section, objc2_classlist_section,
objc2_categorylist_section, objc2_categorylist_section,
objc2_selector_refs_section,
objc2_nonlazy_class_section, objc2_nonlazy_class_section,
objc2_nonlazy_category_section, objc2_nonlazy_category_section,
objc2_protocollist_section, objc2_protocollist_section,
objc2_protocolrefs_section, objc2_protocolrefs_section,
objc2_super_classrefs_section, objc2_super_classrefs_section,
objc2_constant_string_object_section,
objc2_image_info_section, objc2_image_info_section,
objc2_constant_string_object_section
} ; } ;
size_t i; size_t i;