diff --git a/Cargo.toml b/Cargo.toml
index 4c0e70c9..2bd21635 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -21,16 +21,17 @@ cirrus-ci = { repository = "jonhoo/inferno" }
 codecov = { repository = "jonhoo/inferno", branch = "master", service = "github" }
 
 [features]
-default = ["cli", "multithreaded"]
+default = ["cli", "multithreaded", "nameattr"]
 cli = ["structopt", "env_logger"]
 multithreaded = ["chashmap", "crossbeam", "num_cpus"]
+nameattr = ["indexmap"]
 
 [dependencies]
 chashmap = { version = "2.2", optional = true }
 crossbeam = { version = "0.7", optional = true }
 env_logger = { version = "0.6.0", optional = true }
 fnv = "1.0.3"
-indexmap = "1.0"
+indexmap = { version = "1.0", optional = true }
 itoa = "0.4.3"
 lazy_static = "1.3.0"
 log = "0.4"
diff --git a/src/bin/flamegraph.rs b/src/bin/flamegraph.rs
index fe5c3e6c..0d895db4 100644
--- a/src/bin/flamegraph.rs
+++ b/src/bin/flamegraph.rs
@@ -3,7 +3,11 @@ use std::path::{Path, PathBuf};
 
 use env_logger::Env;
 use inferno::flamegraph::color::{BackgroundColor, PaletteMap, SearchColor};
-use inferno::flamegraph::{self, defaults, Direction, FuncFrameAttrsMap, Options, Palette};
+use inferno::flamegraph::{self, defaults, Direction, Options, Palette};
+
+#[cfg(feature = "nameattr")]
+use inferno::flamegraph::FuncFrameAttrsMap;
+
 use structopt::StructOpt;
 
 #[derive(Debug, StructOpt)]
@@ -133,6 +137,7 @@ struct Opt {
     /// File containing attributes to use for the SVG frames of particular functions.
     /// Each line in the file should be a function name followed by a tab,
     /// then a sequence of tab separated name=value pairs
+    #[cfg(feature = "nameattr")]
     #[structopt(long = "nameattr", value_name = "PATH")]
     nameattr: Option<PathBuf>,
 
@@ -187,14 +192,9 @@ impl<'a> Opt {
         options.colors = self.colors;
         options.bgcolors = self.bgcolors;
         options.hash = self.hash;
-        if let Some(file) = self.nameattr {
-            match FuncFrameAttrsMap::from_file(&file) {
-                Ok(m) => {
-                    options.func_frameattrs = m;
-                }
-                Err(e) => panic!("Error reading {}: {:?}", file.display(), e),
-            }
-        };
+
+        self.set_func_frameattrs(&mut options);
+
         if self.inverted {
             options.direction = Direction::Inverted;
             if self.title == defaults::TITLE {
@@ -226,6 +226,21 @@ impl<'a> Opt {
         options.search_color = self.search_color;
         (self.infiles, options)
     }
+
+    #[cfg(feature = "nameattr")]
+    fn set_func_frameattrs(&self, options: &mut Options) {
+        if let Some(file) = &self.nameattr {
+            match FuncFrameAttrsMap::from_file(&file) {
+                Ok(m) => {
+                    options.func_frameattrs = m;
+                }
+                Err(e) => panic!("Error reading {}: {:?}", file.display(), e),
+            }
+        };
+    }
+
+    #[cfg(not(feature = "nameattr"))]
+    fn set_func_frameattrs(&self, _: &mut Options) {}
 }
 
 const PALETTE_MAP_FILE: &str = "palette.map"; // default name for the palette map file
diff --git a/src/flamegraph/mod.rs b/src/flamegraph/mod.rs
index 0821b1d9..6c848fae 100644
--- a/src/flamegraph/mod.rs
+++ b/src/flamegraph/mod.rs
@@ -4,7 +4,9 @@ macro_rules! args {
     }};
 }
 
+#[cfg(feature = "nameattr")]
 mod attrs;
+
 pub mod color;
 mod merge;
 mod rand;
@@ -23,8 +25,12 @@ use quick_xml::events::{BytesEnd, BytesStart, BytesText, Event};
 use quick_xml::Writer;
 use str_stack::StrStack;
 
+#[cfg(feature = "nameattr")]
 use self::attrs::FrameAttrs;
+
+#[cfg(feature = "nameattr")]
 pub use self::attrs::FuncFrameAttrsMap;
+
 pub use self::color::Palette;
 use self::color::{Color, SearchColor};
 use self::svg::{Dimension, StyleOptions};
@@ -115,6 +121,7 @@ pub struct Options<'a> {
     ///
     /// In particular, if a function appears in the given map, it will have extra attributes set in
     /// the resulting SVG based on its value in the map.
+    #[cfg(feature = "nameattr")]
     pub func_frameattrs: FuncFrameAttrsMap,
 
     /// Whether to plot a plot that grows top-to-bottom or bottom-up (the default).
@@ -254,13 +261,15 @@ impl<'a> Default for Options<'a> {
             bgcolors: Default::default(),
             hash: Default::default(),
             palette_map: Default::default(),
-            func_frameattrs: Default::default(),
             direction: Default::default(),
             negate_differentials: Default::default(),
             pretty_xml: Default::default(),
             no_sort: Default::default(),
             reverse_stack_order: Default::default(),
             no_javascript: Default::default(),
+
+            #[cfg(feature = "nameattr")]
+            func_frameattrs: Default::default(),
         }
     }
 }
@@ -521,28 +530,14 @@ where
             }
         };
 
-        let frame_attributes = opt
-            .func_frameattrs
-            .frameattrs_for_func(frame.location.function);
-
-        let mut has_href = false;
-        let mut title = &buffer[info];
-        if let Some(frame_attributes) = frame_attributes {
-            if frame_attributes.attrs.contains_key("xlink:href") {
-                write_container_attributes(&mut cache_a, &frame_attributes);
-                svg.write_event(&cache_a)?;
-                has_href = true;
-            } else {
-                write_container_attributes(&mut cache_g, &frame_attributes);
-                svg.write_event(&cache_g)?;
-            }
-            if let Some(ref t) = frame_attributes.title {
-                title = t.as_str();
-            }
-        } else if let Event::Start(ref mut c) = cache_g {
-            c.clear_attributes();
-            svg.write_event(&cache_g)?;
-        }
+        let (has_href, title) = write_container_start(
+            opt,
+            &mut svg,
+            &mut cache_a,
+            &mut cache_g,
+            &frame,
+            &buffer[info],
+        )?;
 
         svg.write_event(Event::Start(BytesStart::borrowed_name(b"title")))?;
         svg.write_event(Event::Text(BytesText::from_plain_str(title)))?;
@@ -627,7 +622,59 @@ where
     Ok(())
 }
 
+#[cfg(feature = "nameattr")]
+fn write_container_start<'a, W: Write>(
+    opt: &'a Options<'a>,
+    svg: &mut Writer<W>,
+    cache_a: &mut Event<'_>,
+    cache_g: &mut Event<'_>,
+    frame: &merge::TimedFrame<'_>,
+    mut title: &'a str,
+) -> quick_xml::Result<(bool, &'a str)> {
+    let frame_attributes = opt
+        .func_frameattrs
+        .frameattrs_for_func(frame.location.function);
+
+    let mut has_href = false;
+    if let Some(frame_attributes) = frame_attributes {
+        if frame_attributes.attrs.contains_key("xlink:href") {
+            write_container_attributes(cache_a, &frame_attributes);
+            svg.write_event(&cache_a)?;
+            has_href = true;
+        } else {
+            write_container_attributes(cache_g, &frame_attributes);
+            svg.write_event(&cache_g)?;
+        }
+        if let Some(ref t) = frame_attributes.title {
+            title = t.as_str();
+        }
+    } else if let Event::Start(ref mut c) = cache_g {
+        c.clear_attributes();
+        svg.write_event(&cache_g)?;
+    }
+
+    Ok((has_href, title))
+}
+
+#[cfg(not(feature = "nameattr"))]
+fn write_container_start<'a, W: Write>(
+    _opt: &Options<'_>,
+    svg: &mut Writer<W>,
+    _cache_a: &mut Event<'_>,
+    cache_g: &mut Event<'_>,
+    _frame: &merge::TimedFrame<'_>,
+    title: &'a str,
+) -> quick_xml::Result<(bool, &'a str)> {
+    if let Event::Start(ref mut c) = cache_g {
+        c.clear_attributes();
+        svg.write_event(&cache_g)?;
+    }
+
+    Ok((false, title))
+}
+
 /// Writes atributes to the container, container could be g or a
+#[cfg(feature = "nameattr")]
 fn write_container_attributes(event: &mut Event<'_>, frame_attributes: &FrameAttrs) {
     if let Event::Start(ref mut c) = event {
         c.clear_attributes();
diff --git a/tests/flamegraph.rs b/tests/flamegraph.rs
index 624ae602..e53d73c7 100644
--- a/tests/flamegraph.rs
+++ b/tests/flamegraph.rs
@@ -185,6 +185,7 @@ fn flamegraph_factor() {
 }
 
 #[test]
+#[cfg(feature = "nameattr")]
 fn flamegraph_nameattr() {
     let input_file = "./flamegraph/test/results/perf-cycles-instructions-01-collapsed-all.txt";
     let expected_result_file = "./tests/data/flamegraph/nameattr/nameattr.svg";
@@ -201,6 +202,7 @@ fn flamegraph_nameattr() {
 }
 
 #[test]
+#[cfg(feature = "nameattr")]
 fn flamegraph_nameattr_empty_line() {
     let input_file = "./flamegraph/test/results/perf-cycles-instructions-01-collapsed-all.txt";
     let expected_result_file = "./tests/data/flamegraph/nameattr/nameattr.svg";
@@ -217,6 +219,7 @@ fn flamegraph_nameattr_empty_line() {
 }
 
 #[test]
+#[cfg(feature = "nameattr")]
 fn flamegraph_nameattr_empty_attribute() {
     let input_file = "./flamegraph/test/results/perf-cycles-instructions-01-collapsed-all.txt";
     let expected_result_file = "./tests/data/flamegraph/nameattr/nameattr.svg";
@@ -233,6 +236,7 @@ fn flamegraph_nameattr_empty_attribute() {
 }
 
 #[test]
+#[cfg(feature = "nameattr")]
 fn flamegraph_nameattr_duplicate_attributes() {
     let input_file = "./flamegraph/test/results/perf-cycles-instructions-01-collapsed-all.txt";
     let expected_result_file = "./tests/data/flamegraph/nameattr/nameattr_duplicate_attributes.svg";
@@ -249,6 +253,7 @@ fn flamegraph_nameattr_duplicate_attributes() {
 }
 
 #[test]
+#[cfg(feature = "nameattr")]
 fn flamegraph_nameattr_should_warn_about_duplicate_attributes() {
     test_logger::init();
     let nameattr_file = "./tests/data/flamegraph/nameattr/nameattr_duplicate_attributes.txt";
@@ -267,6 +272,7 @@ fn flamegraph_nameattr_should_warn_about_duplicate_attributes() {
 }
 
 #[test]
+#[cfg(feature = "nameattr")]
 fn flamegraph_nameattr_should_warn_about_invalid_attribute() {
     test_logger::init();
     let nameattr_file = "./tests/data/flamegraph/nameattr/nameattr_invalid_attribute.txt";