Index: ext/node/ops/os/cpus.rs
--- ext/node/ops/os/cpus.rs.orig
+++ ext/node/ops/os/cpus.rs
@@ -294,6 +294,11 @@ pub fn cpu_info() -> Option<Vec<CpuInfo>> {
   Some(cpus)
 }
 
+#[cfg(target_os = "openbsd")]
+pub fn cpu_info() -> Option<Vec<CpuInfo>> {
+  None
+}
+
 #[cfg(test)]
 mod tests {
   use super::*;
