+x86_64-*-linux*)
+ TargetPlatform=x86_64-unknown-linux;;
+x86_64-*-freebsd*)
+ TargetPlatform=x86_64-unknown-freebsd;;
+x86_64-*-openbsd*)
+ TargetPlatform=x86_64-unknown-openbsd;;
+x86_64-*-netbsd*)
+ TargetPlatform=x86_64-unknown-netbsd;;
+x86_64-apple-darwin*)
+ TargetPlatform=x86_64-apple-darwin;;