diff --git a/basis/alien/inline/compiler/compiler.factor b/basis/alien/inline/compiler/compiler.factor
index b5a7861d6b..2f5fd29aff 100644
--- a/basis/alien/inline/compiler/compiler.factor
+++ b/basis/alien/inline/compiler/compiler.factor
@@ -2,7 +2,7 @@
 ! See http://factorcode.org/license.txt for BSD license.
 USING: accessors arrays combinators fry generalizations
 io.encodings.ascii io.files io.files.temp io.launcher kernel
-locals sequences system ;
+locals sequences system words ;
 IN: alien.inline.compiler
 
 SYMBOL: C
@@ -27,20 +27,28 @@ SYMBOL: C++
         { C++ [ "g++" ] }
     } case ;
 
+HOOK: compiler-descr os ( lang -- descr )
+
+M: word compiler-descr compiler 1array ;
+M: macosx compiler-descr
+    call-next-method cpu x86.64?
+    [ { "-arch" "x86_64" } append ] when ;
+
+HOOK: link-descr os ( -- descr )
+
+M: word link-descr { "-shared" "-o" } ;
+M: macosx link-descr
+    { "-g" "-prebind" "-dynamiclib" "-o" }
+    cpu x86.64? [ { "-arch" "x86_64" } prepend ] when ;
+
 : link-command ( in out lang -- descr )
-    compiler os {
-        { [ dup linux? ]
-          [ drop { "-shared" "-o" } ] }
-        { [ dup macosx? ]
-          [ drop { "-g" "-prebind" "-dynamiclib" "-o" } ] }
-        [ name>> "unimplemented for: " prepend throw ]
-    } cond swap prefix prepend prepend ;
+    compiler-descr link-descr append prepend prepend ;
 
 :: compile-to-object ( lang contents name -- )
     name ".o" append temp-file
     contents name lang src-suffix append temp-file
     [ ascii set-file-contents ] keep 2array
-    { "-fPIC" "-c" "-o" } lang compiler prefix prepend
+    lang compiler-descr { "-fPIC" "-c" "-o" } append prepend
     try-process ;
 
 :: link-object ( lang args name -- )
diff --git a/basis/alien/inline/tests/tests.factor b/basis/alien/inline/inline-tests.factor
similarity index 100%
rename from basis/alien/inline/tests/tests.factor
rename to basis/alien/inline/inline-tests.factor
diff --git a/basis/alien/inline/inline.factor b/basis/alien/inline/inline.factor
index 1efaa4434f..007dee43c0 100644
--- a/basis/alien/inline/inline.factor
+++ b/basis/alien/inline/inline.factor
@@ -1,11 +1,11 @@
 ! Copyright (C) 2009 Jeremy Hughes.
 ! See http://factorcode.org/license.txt for BSD license.
 USING: accessors alien.inline.compiler alien.inline.types
-alien.libraries alien.parser arrays assocs
-combinators effects fry generalizations grouping io.files
-io.files.info io.files.temp kernel lexer locals math math.order
-math.ranges multiline namespaces quotations sequences splitting
-strings system vocabs.loader vocabs.parser words ;
+alien.libraries alien.parser arrays assocs combinators effects
+fry generalizations grouping io.files io.files.info io.files.temp
+kernel lexer locals math math.order math.ranges multiline
+namespaces quotations sequences source-files splitting strings
+system vocabs.loader vocabs.parser words ;
 IN: alien.inline
 
 SYMBOL: c-library
@@ -27,7 +27,7 @@ SYMBOL: c-strings
 
 : compile-library? ( -- ? )
     library-path dup exists? [
-        current-vocab vocab-source-path
+        file get path>>
         [ file-info modified>> ] bi@ <=> +lt+ =
     ] [ drop t ] if ;