diff --git a/src/lib.rs b/src/lib.rs
index a2e2ffcb..0abc1e9d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -205,13 +205,16 @@ impl Type {
     pub const DGRAM: Type = Type(sys::SOCK_DGRAM);
 
     /// Type corresponding to `SOCK_SEQPACKET`.
-    #[cfg(feature = "all")]
-    #[cfg_attr(docsrs, doc(cfg(feature = "all")))]
+    #[cfg(all(feature = "all", not(target_os = "espidf")))]
+    #[cfg_attr(docsrs, doc(cfg(all(feature = "all", not(target_os = "espidf")))))]
     pub const SEQPACKET: Type = Type(sys::SOCK_SEQPACKET);
 
     /// Type corresponding to `SOCK_RAW`.
-    #[cfg(all(feature = "all", not(target_os = "redox")))]
-    #[cfg_attr(docsrs, doc(cfg(all(feature = "all", not(target_os = "redox")))))]
+    #[cfg(all(feature = "all", not(any(target_os = "redox", target_os = "espidf"))))]
+    #[cfg_attr(
+        docsrs,
+        doc(cfg(all(feature = "all", not(any(target_os = "redox", target_os = "espidf")))))
+    )]
     pub const RAW: Type = Type(sys::SOCK_RAW);
 }
 
@@ -280,6 +283,7 @@ impl RecvFlags {
     ///
     /// On Unix this corresponds to the `MSG_TRUNC` flag.
     /// On Windows this corresponds to the `WSAEMSGSIZE` error code.
+    #[cfg(not(target_os = "espidf"))]
     pub const fn is_truncated(self) -> bool {
         self.0 & sys::MSG_TRUNC != 0
     }
@@ -334,6 +338,7 @@ pub struct TcpKeepalive {
         target_os = "redox",
         target_os = "solaris",
         target_os = "nto",
+        target_os = "espidf",
     )))]
     interval: Option<Duration>,
     #[cfg(not(any(
@@ -342,6 +347,7 @@ pub struct TcpKeepalive {
         target_os = "solaris",
         target_os = "windows",
         target_os = "nto",
+        target_os = "espidf",
     )))]
     retries: Option<u32>,
 }
@@ -356,6 +362,7 @@ impl TcpKeepalive {
                 target_os = "redox",
                 target_os = "solaris",
                 target_os = "nto",
+                target_os = "espidf",
             )))]
             interval: None,
             #[cfg(not(any(
@@ -364,6 +371,7 @@ impl TcpKeepalive {
                 target_os = "solaris",
                 target_os = "windows",
                 target_os = "nto",
+                target_os = "espidf",
             )))]
             retries: None,
         }
diff --git a/src/sockaddr.rs b/src/sockaddr.rs
index c5047c69..2ddb2626 100644
--- a/src/sockaddr.rs
+++ b/src/sockaddr.rs
@@ -235,7 +235,8 @@ impl From<SocketAddrV4> for SockAddr {
                 target_os = "macos",
                 target_os = "netbsd",
                 target_os = "openbsd",
-                target_os = "nto"
+                target_os = "nto",
+                target_os = "espidf",
             ))]
             sin_len: 0,
         };
@@ -275,7 +276,8 @@ impl From<SocketAddrV6> for SockAddr {
                 target_os = "macos",
                 target_os = "netbsd",
                 target_os = "openbsd",
-                target_os = "nto"
+                target_os = "nto",
+                target_os = "espidf",
             ))]
             sin6_len: 0,
             #[cfg(any(target_os = "solaris", target_os = "illumos"))]
diff --git a/src/socket.rs b/src/socket.rs
index 69d0478d..c4f262a4 100644
--- a/src/socket.rs
+++ b/src/socket.rs
@@ -729,6 +729,7 @@ fn set_common_flags(socket: Socket) -> io::Result<Socket> {
             target_os = "linux",
             target_os = "netbsd",
             target_os = "openbsd",
+            target_os = "espidf",
         ))
     ))]
     socket._set_cloexec(true)?;
@@ -1042,8 +1043,11 @@ impl Socket {
     /// For more information about this option, see [`set_header_included`].
     ///
     /// [`set_header_included`]: Socket::set_header_included
-    #[cfg(all(feature = "all", not(target_os = "redox")))]
-    #[cfg_attr(docsrs, doc(all(feature = "all", not(target_os = "redox"))))]
+    #[cfg(all(feature = "all", not(any(target_os = "redox", target_os = "espidf"))))]
+    #[cfg_attr(
+        docsrs,
+        doc(cfg(all(feature = "all", not(any(target_os = "redox", target_os = "espidf")))))
+    )]
     pub fn header_included(&self) -> io::Result<bool> {
         unsafe {
             getsockopt::<c_int>(self.as_raw(), sys::IPPROTO_IP, sys::IP_HDRINCL)
@@ -1062,8 +1066,11 @@ impl Socket {
     /// [raw(7)]: https://man7.org/linux/man-pages/man7/raw.7.html
     /// [`IP_TTL`]: Socket::set_ttl
     /// [`IP_TOS`]: Socket::set_tos
-    #[cfg(all(feature = "all", not(target_os = "redox")))]
-    #[cfg_attr(docsrs, doc(all(feature = "all", not(target_os = "redox"))))]
+    #[cfg(all(feature = "all", not(any(target_os = "redox", target_os = "espidf"))))]
+    #[cfg_attr(
+        docsrs,
+        doc(cfg(all(feature = "all", not(any(target_os = "redox", target_os = "espidf")))))
+    )]
     pub fn set_header_included(&self, included: bool) -> io::Result<()> {
         unsafe {
             setsockopt(
@@ -1166,6 +1173,7 @@ impl Socket {
         target_os = "redox",
         target_os = "solaris",
         target_os = "nto",
+        target_os = "espidf",
     )))]
     pub fn join_multicast_v4_n(
         &self,
@@ -1196,6 +1204,7 @@ impl Socket {
         target_os = "redox",
         target_os = "solaris",
         target_os = "nto",
+        target_os = "espidf",
     )))]
     pub fn leave_multicast_v4_n(
         &self,
@@ -1228,6 +1237,7 @@ impl Socket {
         target_os = "redox",
         target_os = "fuchsia",
         target_os = "nto",
+        target_os = "espidf",
     )))]
     pub fn join_ssm_v4(
         &self,
@@ -1263,6 +1273,7 @@ impl Socket {
         target_os = "redox",
         target_os = "fuchsia",
         target_os = "nto",
+        target_os = "espidf",
     )))]
     pub fn leave_ssm_v4(
         &self,
@@ -1439,6 +1450,7 @@ impl Socket {
         target_os = "solaris",
         target_os = "windows",
         target_os = "nto",
+        target_os = "espidf",
     )))]
     pub fn set_recv_tos(&self, recv_tos: bool) -> io::Result<()> {
         let recv_tos = if recv_tos { 1 } else { 0 };
@@ -1468,6 +1480,7 @@ impl Socket {
         target_os = "solaris",
         target_os = "windows",
         target_os = "nto",
+        target_os = "espidf",
     )))]
     pub fn recv_tos(&self) -> io::Result<bool> {
         unsafe {
diff --git a/src/sys/unix.rs b/src/sys/unix.rs
index 74da8cc2..e9cfddf6 100644
--- a/src/sys/unix.rs
+++ b/src/sys/unix.rs
@@ -60,9 +60,9 @@ pub(crate) use libc::c_int;
 // Used in `Domain`.
 pub(crate) use libc::{AF_INET, AF_INET6};
 // Used in `Type`.
-#[cfg(all(feature = "all", not(target_os = "redox")))]
+#[cfg(all(feature = "all", not(any(target_os = "redox", target_os = "espidf"))))]
 pub(crate) use libc::SOCK_RAW;
-#[cfg(feature = "all")]
+#[cfg(all(feature = "all", not(target_os = "espidf")))]
 pub(crate) use libc::SOCK_SEQPACKET;
 pub(crate) use libc::{SOCK_DGRAM, SOCK_STREAM};
 // Used in `Protocol`.
@@ -72,8 +72,10 @@ pub(crate) use libc::{
     sa_family_t, sockaddr, sockaddr_in, sockaddr_in6, sockaddr_storage, socklen_t,
 };
 // Used in `RecvFlags`.
+#[cfg(not(any(target_os = "redox", target_os = "espidf")))]
+pub(crate) use libc::MSG_TRUNC;
 #[cfg(not(target_os = "redox"))]
-pub(crate) use libc::{MSG_TRUNC, SO_OOBINLINE};
+pub(crate) use libc::SO_OOBINLINE;
 // Used in `Socket`.
 #[cfg(not(target_os = "nto"))]
 pub(crate) use libc::ipv6_mreq as Ipv6Mreq;
@@ -89,6 +91,7 @@ pub(crate) use libc::IP_HDRINCL;
     target_os = "solaris",
     target_os = "haiku",
     target_os = "nto",
+    target_os = "espidf",
 )))]
 pub(crate) use libc::IP_RECVTOS;
 #[cfg(not(any(
@@ -117,6 +120,7 @@ pub(crate) use libc::{
     target_os = "redox",
     target_os = "fuchsia",
     target_os = "nto",
+    target_os = "espidf",
 )))]
 pub(crate) use libc::{
     ip_mreq_source as IpMreqSource, IP_ADD_SOURCE_MEMBERSHIP, IP_DROP_SOURCE_MEMBERSHIP,
@@ -232,6 +236,7 @@ type IovLen = usize;
     target_os = "solaris",
     target_os = "nto",
     target_vendor = "apple",
+    target_os = "espidf",
 ))]
 type IovLen = c_int;
 
@@ -370,10 +375,11 @@ impl_debug!(
     Type,
     libc::SOCK_STREAM,
     libc::SOCK_DGRAM,
-    #[cfg(not(target_os = "redox"))]
+    #[cfg(not(any(target_os = "redox", target_os = "espidf")))]
     libc::SOCK_RAW,
-    #[cfg(not(any(target_os = "redox", target_os = "haiku")))]
+    #[cfg(not(any(target_os = "redox", target_os = "haiku", target_os = "espidf")))]
     libc::SOCK_RDM,
+    #[cfg(not(target_os = "espidf"))]
     libc::SOCK_SEQPACKET,
     /* TODO: add these optional bit OR-ed flags:
     #[cfg(any(
@@ -417,6 +423,7 @@ impl RecvFlags {
     /// a record is terminated by sending a message with the end-of-record flag set.
     ///
     /// On Unix this corresponds to the MSG_EOR flag.
+    #[cfg(not(target_os = "espidf"))]
     pub const fn is_end_of_record(self) -> bool {
         self.0 & libc::MSG_EOR != 0
     }
@@ -435,11 +442,13 @@ impl RecvFlags {
 #[cfg(not(target_os = "redox"))]
 impl std::fmt::Debug for RecvFlags {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        f.debug_struct("RecvFlags")
-            .field("is_end_of_record", &self.is_end_of_record())
-            .field("is_out_of_band", &self.is_out_of_band())
-            .field("is_truncated", &self.is_truncated())
-            .finish()
+        let mut s = f.debug_struct("RecvFlags");
+        #[cfg(not(target_os = "espidf"))]
+        s.field("is_end_of_record", &self.is_end_of_record());
+        s.field("is_out_of_band", &self.is_out_of_band());
+        #[cfg(not(target_os = "espidf"))]
+        s.field("is_truncated", &self.is_truncated());
+        s.finish()
     }
 }
 
@@ -1056,6 +1065,7 @@ pub(crate) fn from_in6_addr(addr: in6_addr) -> Ipv6Addr {
     target_os = "redox",
     target_os = "solaris",
     target_os = "nto",
+    target_os = "espidf",
 )))]
 pub(crate) fn to_mreqn(
     multiaddr: &Ipv4Addr,