diff --git a/Makefile.am b/Makefile.am
index 43d3198..149003c 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -101,7 +101,7 @@ clean-local:
 	  -I binary `echo "$(build_cpu)" |                                    \
 		     grep -q '^i[0-9]86$$' &&                                 \
 		     echo ' -O elf32-i386 -B i386' ||                         \
-		     echo ' -O elf64-x86-64 -B x86-64'`                       \
+		     echo ' -O elf64-x86-64 -B i386:x86-64'`                  \
 	  `echo "$<" | sed -e '                                               \
 	    s/\(.*\/\)\([^.]*\)\([.].*\)/\1\2\3=\2 /;                         \
 	    t0; s/\([^.]*\)\([.].*\)/\1\2=\1 /; t0; s/.*/&=& /;:0;            \
@@ -123,7 +123,7 @@ clean-local:
 	  -I binary `echo "$(build_cpu)" |                                    \
 		     grep -q '^i[0-9]86$$' &&                                 \
 		     echo ' -O elf32-i386 -B i386' ||                         \
-		     echo ' -O elf64-x86-64 -B x86-64'`                       \
+		     echo ' -O elf64-x86-64 -B i386:x86-64'`                  \
 	  `echo "$<" | sed -e '                                               \
 	    s/\(.*\/\)\([^.]*\)\([.].*\)/\1\2\3=\2 /;                         \
 	    t0; s/\([^.]*\)\([.].*\)/\1\2=\1 /; t0; s/.*/&=& /;:0;            \
@@ -145,7 +145,7 @@ clean-local:
 	  -I binary `echo "$(build_cpu)" |                                    \
 		     grep -q '^i[0-9]86$$' &&                                 \
 		     echo ' -O elf32-i386 -B i386' ||                         \
-		     echo ' -O elf64-x86-64 -B x86-64'`                       \
+		     echo ' -O elf64-x86-64 -B i386:x86-64'`                  \
 	  `echo "$<" | sed -e '                                               \
 	    s/\(.*\/\)\([^.]*\)\([.].*\)/\1\2\3=\2 /;                         \
 	    t0; s/\([^.]*\)\([.].*\)/\1\2=\1 /; t0; s/.*/&=& /;:0;            \
@@ -172,7 +172,7 @@ objcopy                                                                       \
 	  -I binary `echo $(build_cpu) |                                      \
 		     grep -q '^i[0-9]86$$' &&                                 \
 		     echo ' -O elf32-i386 -B i386' ||                         \
-		     echo ' -O elf64-x86-64 -B x86-64'`                       \
+		     echo ' -O elf64-x86-64 -B i386:x86-64'`                  \
 	  `echo "$@" | sed -e '                                               \
 	    s/\(.*\/\)\([^.]*\)\([.].*\)/\1\2\3=\2 /;                         \
 	    t0; s/\([^.]*\)\([.].*\)/\1\2=\1 /; t0; s/.*/&=& /;:0;            \
@@ -194,7 +194,7 @@ objcopy                                                                       \
 	  -I binary `echo "$(build_cpu)" |                                    \
 		     grep -q '^i[0-9]86$$' &&                                 \
 		     echo ' -O elf32-i386 -B i386' ||                         \
-		     echo ' -O elf64-x86-64 -B x86-64'`                       \
+		     echo ' -O elf64-x86-64 -B i386:x86-64'`                  \
 	  `echo "$<" | sed -e '                                               \
 	    s/\(.*\/\)\([^.]*\)\([.].*\)/\1\2\3=\2 /;                         \
 	    t0; s/\([^.]*\)\([.].*\)/\1\2=\1 /; t0; s/.*/&=& /;:0;            \