Apply rust-lang/rust@e8121b3d163f90a8f1cefca07

Author: alexcrichton

configure

@@ -11472,6 +11472,9 @@ pecoff) FORMAT_FILE="pecoff.lo"
 xcoff*) FORMAT_FILE="xcoff.lo"
         backtrace_supports_data=no
         ;;
+macho*) FORMAT_FILE="macho.lo"
+        backtrace_supports_data=no
+        ;;
 *) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: could not determine output file type" >&5
 $as_echo "$as_me: WARNING: could not determine output file type" >&2;}
    FORMAT_FILE="unknown.lo"

configure.ac

@@ -236,6 +236,9 @@ pecoff) FORMAT_FILE="pecoff.lo"
 xcoff*) FORMAT_FILE="xcoff.lo"
         backtrace_supports_data=no
         ;;
+macho*) FORMAT_FILE="macho.lo"
+        backtrace_supports_data=no
+        ;;
 *) AC_MSG_WARN([could not determine output file type])
    FORMAT_FILE="unknown.lo"
    backtrace_supported=no

filetype.awk

@@ -3,3 +3,9 @@
 /\177ELF\002/ { if (NR == 1) { print "elf64"; exit } }
 /\114\001/    { if (NR == 1) { print "pecoff"; exit } }
 /\144\206/    { if (NR == 1) { print "pecoff"; exit } }
+/\xFE\xED\xFA\xCE/ { if (NR == 1) { print "macho32"; exit } }
+/\xCE\xFA\xED\xFE/ { if (NR == 1) { print "macho32"; exit } }
+/\xFE\xED\xFA\xCF/ { if (NR == 1) { print "macho64"; exit } }
+/\xCF\xFA\xED\xFE/ { if (NR == 1) { print "macho64"; exit } }
+/\xCA\xFE\xBA\xBE/ { if (NR == 1) { print "macho-fat"; exit } }
+/\xBE\xBA\xFE\xCA/ { if (NR == 1) { print "macho-fat"; exit } }