diff --git a/include/cyclone/runtime.h b/include/cyclone/runtime.h
index 0d4ac141..3c61e5fc 100644
--- a/include/cyclone/runtime.h
+++ b/include/cyclone/runtime.h
@@ -391,6 +391,7 @@ extern const object primitive_bytevector_91u8_91set_67;
 extern const object primitive_string_91ref;
 extern const object primitive_string_91set_67;
 extern const object primitive_Cyc_91installation_91dir;
+extern const object primitive_Cyc_91compilation_91environment;
 extern const object primitive_command_91line_91arguments;
 extern const object primitive_system;
 extern const object primitive_boolean_127;
diff --git a/runtime.c b/runtime.c
index f2bf7cb0..563e3a49 100644
--- a/runtime.c
+++ b/runtime.c
@@ -3189,6 +3189,12 @@ void _Cyc_91installation_91dir(void *data, object cont, object args)
   Cyc_installation_dir(data, cont, car(args));
 }
 
+void _Cyc_91compilation_91environment(void *data, object cont, object args)
+{
+  Cyc_check_num_args(data, "Cyc-compilation-environment", 1, args);
+  Cyc_compilation_environment(data, cont, car(args));
+}
+
 void _command_91line_91arguments(void *data, object cont, object args)
 {
   object cmdline = Cyc_command_line_arguments(data, cont);
@@ -4132,6 +4138,8 @@ static primitive_type string_91set_67_primitive =
     { {0}, primitive_tag, "string-set!", &_cyc_string_91set_67 };
 static primitive_type Cyc_91installation_91dir_primitive =
     { {0}, primitive_tag, "Cyc-installation-dir", &_Cyc_91installation_91dir };
+static primitive_type Cyc_91compilation_91environment_primitive =
+    { {0}, primitive_tag, "Cyc-compilation-environment", &_Cyc_91compilation_91environment };
 static primitive_type command_91line_91arguments_primitive =
     { {0}, primitive_tag, "command-line-arguments",
 &_command_91line_91arguments
@@ -4325,6 +4333,8 @@ const object primitive_string_91ref = &string_91ref_primitive;
 const object primitive_string_91set_67 = &string_91set_67_primitive;
 const object primitive_Cyc_91installation_91dir =
     &Cyc_91installation_91dir_primitive;
+const object primitive_Cyc_91compilation_91environment =
+    &Cyc_91compilation_91environment_primitive;
 const object primitive_command_91line_91arguments =
     &command_91line_91arguments_primitive;
 const object primitive_system = &system_primitive;
diff --git a/scheme/cyclone/cps-optimizations.sld b/scheme/cyclone/cps-optimizations.sld
index f4f42502..c82ecde5 100644
--- a/scheme/cyclone/cps-optimizations.sld
+++ b/scheme/cyclone/cps-optimizations.sld
@@ -532,6 +532,7 @@
           bytevector bytevector-append bytevector-copy
           string->utf8 number->string symbol->string list->string utf8->string
           string-append string substring Cyc-installation-dir read-line
+          Cyc-compilation-environment
           )))
 
     ;; Check each pair of primitive call / corresponding lambda arg,
diff --git a/scheme/cyclone/primitives.sld b/scheme/cyclone/primitives.sld
index 8bb33f2c..aa5dab64 100644
--- a/scheme/cyclone/primitives.sld
+++ b/scheme/cyclone/primitives.sld
@@ -72,6 +72,7 @@
          system
          command-line-arguments
          Cyc-installation-dir
+         Cyc-compilation-environment
          Cyc-default-exception-handler
          Cyc-current-exception-handler
          cons
@@ -188,6 +189,7 @@
          (system 1 1)
          (command-line-arguments 0 0)
          (Cyc-installation-dir 1 1)
+         (Cyc-compilation-environment 1 1)
          (Cyc-default-exception-handler 1 1)
          (Cyc-current-exception-handler 0 0)
          (cons 2 2)
@@ -486,6 +488,7 @@
          ((eq? p 'string-set!)    "Cyc_string_set")
          ((eq? p 'substring)      "Cyc_substring")
          ((eq? p 'Cyc-installation-dir) "Cyc_installation_dir")
+         ((eq? p 'Cyc-compilation-environment) "Cyc_compilation_environment")
          ((eq? p 'command-line-arguments) "Cyc_command_line_arguments")
          ((eq? p 'system)         "Cyc_system")
          ((eq? p 'assq)          "assq")
@@ -584,6 +587,7 @@
         string-set!
         substring
         Cyc-installation-dir
+        Cyc-compilation-environment
         command-line-arguments
         assq
         assv
@@ -681,7 +685,10 @@
                          bytevector
                          bytevector-u8-ref
                          bytevector-u8-set!
-                         make-vector list->vector Cyc-installation-dir))))
+                         make-vector 
+                         list->vector 
+                         Cyc-compilation-environment
+                         Cyc-installation-dir))))
 
     ;; Primitive functions that pass a continuation or thread data but have no other arguments
     (define (prim:cont/no-args? exp)
diff --git a/scheme/cyclone/transforms.sld b/scheme/cyclone/transforms.sld
index 84d83e18..62c8d2c6 100644
--- a/scheme/cyclone/transforms.sld
+++ b/scheme/cyclone/transforms.sld
@@ -470,6 +470,7 @@
                   system
                   command-line-arguments
                   Cyc-installation-dir
+                  Cyc-compilation-environment
                   Cyc-default-exception-handler
                   Cyc-current-exception-handler
                   cell-get
diff --git a/scheme/eval.sld b/scheme/eval.sld
index 0d56cfdb..4c20f299 100644
--- a/scheme/eval.sld
+++ b/scheme/eval.sld
@@ -182,6 +182,7 @@
       (list 'apply apply)
       (list '%halt %halt)
       (list 'exit exit)
+      (list 'Cyc-compilation-environment Cyc-compilation-environment)
       (list 'Cyc-installation-dir Cyc-installation-dir)
       (list 'system system)
       (list 'command-line-arguments command-line-arguments)