Replaced glibc version of elf.h with musl version of elf.h.

src/common/dwarf/elf_reader.cc

 // Copyright 2005 Google Inc. All Rights Reserved.
 // Author: chatham@google.com (Andrew Chatham)
 // Author: satorux@google.com (Satoru Takabayashi)
 //
 // Code for reading in ELF files.
 //
 // For information on the ELF format, see
 // http://www.x86.org/ftp/manuals/tools/elf.pdf
 //
 // I also liked:
@@ skipping 34 matching lines @@
 #include "zlib.h"
 
 #include "elf_reader.h"
 //#include "using_std_string.h"
 // EM_AARCH64 is not defined by elf.h of GRTE v3 on x86.
 // TODO(dougkwan): Remove this when v17 is retired.
 #if !defined(EM_AARCH64)
 #define EM_AARCH64      183             /* ARM AARCH64 */
 #endif
 
+// Map Linux macros to their Apple equivalents.
+#if __APPLE__
+#ifndef __LITTLE_ENDIAN
+#define __LITTLE_ENDIAN __ORDER_LITTLE_ENDIAN__
+#endif  // __LITTLE_ENDIAN
+#ifndef __BIG_ENDIAN
+#define __BIG_ENDIAN __ORDER_BIG_ENDIAN__
+#endif  // __BIG_ENDIAN
+#ifndef __BYTE_ORDER
+#define __BYTE_ORDER __BYTE_ORDER__
+#endif  // __BYTE_ORDER
+#endif  // __APPLE__
+
 // TODO(dthomson): Can be removed once all Java code is using the Google3
 // launcher. We need to avoid processing PLT functions as it causes memory
 // fragmentation in malloc, which is fixed in tcmalloc - and if the Google3
 // launcher is used the JVM will then use tcmalloc. b/13735638
 //DEFINE_bool(elfreader_process_dynsyms, true,
 //            "Activate PLT function processing");
 
 using std::string;
 using std::vector;
 
@@ skipping 1184 matching lines @@
 }
 
 bool ElfReader::IsNonStrippedELFBinary(const string &path) {
   return IsNonStrippedELFBinaryHelper(path, false);
 }
 
 bool ElfReader::IsNonDebugStrippedELFBinary(const string &path) {
   return IsNonStrippedELFBinaryHelper(path, true);
 }
 }  // namespace dwarf2reader