diff --git a/components/style/Cargo.toml b/components/style/Cargo.toml
index be0d5fb5d94..04cb51df3c6 100644
--- a/components/style/Cargo.toml
+++ b/components/style/Cargo.toml
@@ -16,7 +16,7 @@ doctest = false
 gecko = ["nsstring_vendor", "rayon/unstable", "num_cpus"]
 use_bindgen = ["bindgen", "regex"]
 servo = ["serde/unstable", "serde", "serde_derive", "heapsize", "heapsize_derive",
-         "style_traits/servo", "servo_atoms", "html5ever-atoms",
+         "style_traits/servo", "servo_atoms", "servo_config", "html5ever-atoms",
          "cssparser/heapsize", "cssparser/serde", "encoding",
          "rayon/unstable", "servo_url", "servo_url/servo"]
 testing = []
@@ -49,7 +49,7 @@ selectors = { path = "../selectors" }
 serde = {version = "0.9", optional = true}
 serde_derive = {version = "0.9", optional = true}
 servo_atoms = {path = "../atoms", optional = true}
-servo_config = {path = "../config"}
+servo_config = {path = "../config", optional = true}
 smallvec = "0.3"
 style_traits = {path = "../style_traits"}
 servo_url = {path = "../url", optional = true}
diff --git a/components/style/context.rs b/components/style/context.rs
index 39643af2f8e..6a9d3fd5bb9 100644
--- a/components/style/context.rs
+++ b/components/style/context.rs
@@ -17,10 +17,10 @@ use matching::StyleSharingCandidateCache;
 use parking_lot::RwLock;
 #[cfg(feature = "gecko")] use selector_parser::PseudoElement;
 use selectors::matching::ElementSelectorFlags;
-use servo_config::opts;
+#[cfg(feature = "servo")] use servo_config::opts;
 use shared_lock::StylesheetGuards;
 use std::collections::HashMap;
-use std::env;
+#[cfg(not(feature = "servo"))] use std::env;
 use std::fmt;
 use std::ops::Add;
 use std::sync::{Arc, Mutex};
@@ -170,6 +170,7 @@ impl fmt::Display for TraversalStatistics {
     }
 }
 
+#[cfg(not(feature = "servo"))]
 lazy_static! {
     /// Whether to dump style statistics, computed statically. We use an environmental
     /// variable so that this is easy to set for Gecko builds, and matches the
@@ -182,10 +183,20 @@ lazy_static! {
     };
 }
 
+#[cfg(feature = "servo")]
+fn shall_stat_style_sharing() -> bool {
+    opts::get().style_sharing_stats
+}
+
+#[cfg(not(feature = "servo"))]
+fn shall_stat_style_sharing() -> bool {
+    *DUMP_STYLE_STATISTICS
+}
+
 impl TraversalStatistics {
     /// Returns whether statistics dumping is enabled.
     pub fn should_dump() -> bool {
-        *DUMP_STYLE_STATISTICS || opts::get().style_sharing_stats
+        shall_stat_style_sharing()
     }
 
     /// Computes the traversal time given the start time in seconds.
diff --git a/components/style/lib.rs b/components/style/lib.rs
index d11deca488b..d36001b2f3d 100644
--- a/components/style/lib.rs
+++ b/components/style/lib.rs
@@ -70,7 +70,7 @@ extern crate rayon;
 extern crate selectors;
 #[cfg(feature = "servo")] #[macro_use] extern crate serde_derive;
 #[cfg(feature = "servo")] #[macro_use] extern crate servo_atoms;
-extern crate servo_config;
+#[cfg(feature = "servo")] extern crate servo_config;
 #[cfg(feature = "servo")] extern crate servo_url;
 extern crate smallvec;
 #[macro_use]
diff --git a/components/style/matching.rs b/components/style/matching.rs
index dbcb0040216..e6c9de52025 100644
--- a/components/style/matching.rs
+++ b/components/style/matching.rs
@@ -23,7 +23,7 @@ use selector_parser::{PseudoElement, RestyleDamage, SelectorImpl};
 use selectors::bloom::BloomFilter;
 use selectors::matching::{ElementSelectorFlags, StyleRelations};
 use selectors::matching::AFFECTED_BY_PSEUDO_ELEMENTS;
-use servo_config::opts;
+#[cfg(feature = "servo")] use servo_config::opts;
 use sink::ForgetfulSink;
 use std::sync::Arc;
 use stylist::ApplicableDeclarationBlock;
@@ -783,6 +783,16 @@ pub enum StyleSharingBehavior {
     Disallow,
 }
 
+#[cfg(feature = "servo")]
+fn is_share_style_cache_disabled() -> bool {
+    opts::get().disable_share_style_cache
+}
+
+#[cfg(not(feature = "servo"))]
+fn is_share_style_cache_disabled() -> bool {
+    false
+}
+
 /// The public API that elements expose for selector matching.
 pub trait MatchMethods : TElement {
     /// Performs selector matching and property cascading on an element and its eager pseudos.
@@ -1069,7 +1079,7 @@ pub trait MatchMethods : TElement {
                                       shared_context: &SharedStyleContext,
                                       data: &mut AtomicRefMut<ElementData>)
                                       -> StyleSharingResult {
-        if opts::get().disable_share_style_cache {
+        if is_share_style_cache_disabled() {
             return StyleSharingResult::CannotShare
         }
 
diff --git a/components/style/stylesheets.rs b/components/style/stylesheets.rs
index 865b2fb4b75..822f59478a0 100644
--- a/components/style/stylesheets.rs
+++ b/components/style/stylesheets.rs
@@ -27,6 +27,7 @@ use parser::{Parse, ParserContext, log_css_error};
 use properties::{PropertyDeclarationBlock, parse_property_declaration_list};
 use selector_parser::{SelectorImpl, SelectorParser};
 use selectors::parser::SelectorList;
+#[cfg(feature = "servo")]
 use servo_config::prefs::PREFS;
 #[cfg(not(feature = "gecko"))]
 use servo_url::ServoUrl;
@@ -997,6 +998,16 @@ impl<'a, 'b> NestedRuleParser<'a, 'b> {
     }
 }
 
+#[cfg(feature = "servo")]
+fn is_viewport_enabled() -> bool {
+    PREFS.get("layout.viewport.enabled").as_boolean().unwrap_or(false)
+}
+
+#[cfg(not(feature = "servo"))]
+fn is_viewport_enabled() -> bool {
+    true
+}
+
 impl<'a, 'b> AtRuleParser for NestedRuleParser<'a, 'b> {
     type Prelude = AtRulePrelude;
     type AtRule = CssRule;
@@ -1017,8 +1028,7 @@ impl<'a, 'b> AtRuleParser for NestedRuleParser<'a, 'b> {
                 Ok(AtRuleType::WithBlock(AtRulePrelude::FontFace))
             },
             "viewport" => {
-                if PREFS.get("layout.viewport.enabled").as_boolean().unwrap_or(false) ||
-                   cfg!(feature = "gecko") {
+                if is_viewport_enabled() {
                     Ok(AtRuleType::WithBlock(AtRulePrelude::Viewport))
                 } else {
                     Err(())
diff --git a/components/style/traversal.rs b/components/style/traversal.rs
index f334c40f225..37e52eafb8f 100644
--- a/components/style/traversal.rs
+++ b/components/style/traversal.rs
@@ -13,7 +13,7 @@ use dom::{DirtyDescendants, NodeInfo, TElement, TNode};
 use matching::{MatchMethods, StyleSharingBehavior};
 use restyle_hints::{RESTYLE_DESCENDANTS, RESTYLE_SELF};
 use selector_parser::RestyleDamage;
-use servo_config::opts;
+#[cfg(feature = "servo")] use servo_config::opts;
 use std::borrow::BorrowMut;
 use stylist::Stylist;
 
@@ -100,6 +100,16 @@ impl TraversalDriver {
     }
 }
 
+#[cfg(feature = "servo")]
+fn is_servo_nonincremental_layout() -> bool {
+    opts::get().nonincremental_layout
+}
+
+#[cfg(not(feature = "servo"))]
+fn is_servo_nonincremental_layout() -> bool {
+    false
+}
+
 /// A DOM Traversal trait, that is used to generically implement styling for
 /// Gecko and Servo.
 pub trait DomTraversal<E: TElement> : Sync {
@@ -175,7 +185,7 @@ pub trait DomTraversal<E: TElement> : Sync {
     /// Returns true if traversal is needed for the given node and subtree.
     fn node_needs_traversal(node: E::ConcreteNode, animation_only: bool) -> bool {
         // Non-incremental layout visits every node.
-        if cfg!(feature = "servo") && opts::get().nonincremental_layout {
+        if is_servo_nonincremental_layout() {
             return true;
         }