--- dyld/dyld-46.12/src/dyldInitialization.cpp
+++ dyld/dyld-45.1/src/dyldInitialization.cpp
@@ -31,9 +31,6 @@
 #if __ppc__ || __ppc64__
 	#include <mach-o/ppc/reloc.h>
 #endif
-#if __x86_64__
-	#include <mach-o/x86_64/reloc.h>
-#endif
 #include "dyld.h"
 
 #if __LP64__
@@ -50,11 +47,7 @@
 	#define RELOC_SIZE				2
 #endif
 
-#if __x86_64__
-	#define POINTER_RELOC X86_64_RELOC_UNSIGNED
-#else
 	#define POINTER_RELOC GENERIC_RELOC_VANILLA
-#endif
 
 //
 //  Code to bootstrap dyld into a runnable state
@@ -114,9 +107,6 @@
 	const struct load_command* const cmds = (struct load_command*)(((char*)mh)+sizeof(macho_header));
 	const struct load_command* cmd = cmds;
 	const struct macho_segment_command* linkEditSeg = NULL;
-#if __x86_64__
-	const struct macho_segment_command* firstWritableSeg = NULL;
-#endif
 	const struct dysymtab_command* dynamicSymbolTable = NULL;
 	for (uint32_t i = 0; i < cmd_count; ++i) {
 		switch (cmd->cmd) {
@@ -138,10 +128,6 @@
 							}
 						}
 					}
-#if __x86_64__
-					if ( (firstWritableSeg == NULL) && (seg->initprot & VM_PROT_WRITE) )
-						firstWritableSeg = seg;
-#endif
 				}
 				break;
 			case LC_DYSYMTAB:
@@ -152,11 +138,7 @@
 	}
 	
 	// use reloc's to rebase all random data pointers
-#if __x86_64__
-	const uintptr_t relocBase = firstWritableSeg->vmaddr + slide;
-#else
 	const uintptr_t relocBase = (uintptr_t)mh;
-#endif
 	const relocation_info* const relocsStart = (struct relocation_info*)(linkEditSeg->vmaddr + slide + dynamicSymbolTable->locreloff - linkEditSeg->fileoff);
 	const relocation_info* const relocsEnd = &relocsStart[dynamicSymbolTable->nlocrel];
 	for (const relocation_info* reloc=relocsStart; reloc < relocsEnd; ++reloc) {