diff --git a/build/fbcode_builder/specs/fbzmq.py b/build/fbcode_builder/specs/fbzmq.py
index 8b47ccb65..e8f98eaca 100644
--- a/build/fbcode_builder/specs/fbzmq.py
+++ b/build/fbcode_builder/specs/fbzmq.py
@@ -8,6 +8,7 @@ import specs.fbthrift as fbthrift
 import specs.folly as folly
 import specs.gmock as gmock
 import specs.sodium as sodium
+import specs.sigar as sigar
 
 from shell_quoting import ShellQuoted
 
@@ -15,7 +16,7 @@ from shell_quoting import ShellQuoted
 def fbcode_builder_spec(builder):
     builder.add_option('zeromq/libzmq:git_hash', 'v4.2.5')
     return {
-        'depends_on': [folly, fbthrift, gmock, sodium],
+        'depends_on': [folly, fbthrift, gmock, sodium, sigar],
         'steps': [
             builder.github_project_workdir('zeromq/libzmq', '.'),
             builder.step('Build and install zeromq/libzmq', [
diff --git a/build/fbcode_builder/specs/sigar.py b/build/fbcode_builder/specs/sigar.py
new file mode 100644
index 000000000..3ea86453e
--- /dev/null
+++ b/build/fbcode_builder/specs/sigar.py
@@ -0,0 +1,21 @@
+#!/usr/bin/env python
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+from shell_quoting import ShellQuoted
+
+
+def fbcode_builder_spec(builder):
+    return {
+        'steps': [
+            builder.github_project_workdir('hyperic/sigar', '.'),
+            builder.step('Build and install sigar', [
+                builder.run(ShellQuoted('./autogen.sh')),
+                builder.run(ShellQuoted('CFLAGS="$CFLAGS -fgnu89-inline"')),
+                builder.configure(),
+                builder.make_and_install(),
+            ]),
+        ],
+    }