diff --git a/src/compiletest/runtest.rs b/src/compiletest/runtest.rs
index 6720b9a530f..353d8c931a6 100644
--- a/src/compiletest/runtest.rs
+++ b/src/compiletest/runtest.rs
@@ -834,6 +834,7 @@ fn check_expected_errors(expected_errors: Vec<errors::ExpectedError> ,
     #[cfg(target_os = "linux")]
     #[cfg(target_os = "macos")]
     #[cfg(target_os = "freebsd")]
+    #[cfg(target_os = "dragonfly")]
     fn prefix_matches( line : &str, prefix : &str ) -> bool {
         line.starts_with( prefix )
     }
@@ -1237,6 +1238,7 @@ fn program_output(config: &Config, testfile: &Path, lib_path: &str, prog: String
 #[cfg(target_os = "linux")]
 #[cfg(target_os = "macos")]
 #[cfg(target_os = "freebsd")]
+#[cfg(target_os = "dragonfly")]
 fn make_cmdline(_libpath: &str, prog: &str, args: &[String]) -> String {
     format!("{} {}", prog, args.connect(" "))
 }
diff --git a/src/compiletest/util.rs b/src/compiletest/util.rs
index 369e6b0af64..445e814a1eb 100644
--- a/src/compiletest/util.rs
+++ b/src/compiletest/util.rs
@@ -21,6 +21,7 @@ static OS_TABLE: &'static [(&'static str, &'static str)] = &[
     ("android", "android"),
     ("linux", "linux"),
     ("freebsd", "freebsd"),
+    ("dragonfly", "dragonfly"),
 ];
 
 pub fn get_os(triple: &str) -> &'static str {
diff --git a/src/test/run-pass/dupe-first-attr.rc b/src/test/run-pass/dupe-first-attr.rc
index c3c22cb26d2..76dedaba40f 100644
--- a/src/test/run-pass/dupe-first-attr.rc
+++ b/src/test/run-pass/dupe-first-attr.rc
@@ -23,6 +23,9 @@ mod hello;
 #[cfg(target_os = "freebsd")]
 mod hello;
 
+#[cfg(target_os = "dragonfly")]
+mod hello;
+
 #[cfg(target_os = "android")]
 mod hello;
 
diff --git a/src/test/run-pass/intrinsic-alignment.rs b/src/test/run-pass/intrinsic-alignment.rs
index 84593ececd0..197b92ba635 100644
--- a/src/test/run-pass/intrinsic-alignment.rs
+++ b/src/test/run-pass/intrinsic-alignment.rs
@@ -20,6 +20,7 @@ mod rusti {
 #[cfg(target_os = "linux")]
 #[cfg(target_os = "macos")]
 #[cfg(target_os = "freebsd")]
+#[cfg(target_os = "dragonfly")]
 mod m {
     #[main]
     #[cfg(target_arch = "x86")]
diff --git a/src/test/run-pass/lang-item-public.rs b/src/test/run-pass/lang-item-public.rs
index 6330e1bf3c1..f541ca6794f 100644
--- a/src/test/run-pass/lang-item-public.rs
+++ b/src/test/run-pass/lang-item-public.rs
@@ -28,6 +28,10 @@ extern {}
 #[link(name = "execinfo")]
 extern {}
 
+#[cfg(target_os = "dragonfly")]
+#[link(name = "c")]
+extern {}
+
 #[cfg(target_os = "macos")]
 #[link(name = "System")]
 extern {}
diff --git a/src/test/run-pass/rec-align-u64.rs b/src/test/run-pass/rec-align-u64.rs
index cf254d54793..ada012fc2f5 100644
--- a/src/test/run-pass/rec-align-u64.rs
+++ b/src/test/run-pass/rec-align-u64.rs
@@ -39,6 +39,7 @@ struct Outer {
 #[cfg(target_os = "linux")]
 #[cfg(target_os = "macos")]
 #[cfg(target_os = "freebsd")]
+#[cfg(target_os = "dragonfly")]
 mod m {
     #[cfg(target_arch = "x86")]
     pub mod m {
diff --git a/src/test/run-pass/x86stdcall.rs b/src/test/run-pass/x86stdcall.rs
index b2cf771faee..66dbb6b1619 100644
--- a/src/test/run-pass/x86stdcall.rs
+++ b/src/test/run-pass/x86stdcall.rs
@@ -33,5 +33,6 @@ pub fn main() {
 #[cfg(target_os = "macos")]
 #[cfg(target_os = "linux")]
 #[cfg(target_os = "freebsd")]
+#[cfg(target_os = "dragonfly")]
 #[cfg(target_os = "android")]
 pub fn main() { }