diff --git a/src/unix/bsd/apple/mod.rs b/src/unix/bsd/apple/mod.rs
index e8f97e4edeb08..4b2c3e02b3003 100644
--- a/src/unix/bsd/apple/mod.rs
+++ b/src/unix/bsd/apple/mod.rs
@@ -838,6 +838,12 @@ pub const NI_MAXHOST: ::socklen_t = 1025;
 pub const Q_GETQUOTA: ::c_int = 0x300;
 pub const Q_SETQUOTA: ::c_int = 0x400;
 
+pub const RTLD_LOCAL: ::c_int = 0x4;
+pub const RTLD_FIRST: ::c_int = 0x100;
+pub const RTLD_NODELETE: ::c_int = 0x80;
+pub const RTLD_NOLOAD: ::c_int = 0x10;
+pub const RTLD_GLOBAL: ::c_int = 0x8;
+
 extern {
     pub fn getnameinfo(sa: *const ::sockaddr,
                        salen: ::socklen_t,
diff --git a/src/unix/bsd/freebsdlike/mod.rs b/src/unix/bsd/freebsdlike/mod.rs
index 9f2b172e30697..d2e3a4e3e243e 100644
--- a/src/unix/bsd/freebsdlike/mod.rs
+++ b/src/unix/bsd/freebsdlike/mod.rs
@@ -573,6 +573,11 @@ pub const NI_MAXHOST: ::size_t = 1025;
 pub const Q_GETQUOTA: ::c_int = 0x700;
 pub const Q_SETQUOTA: ::c_int = 0x800;
 
+pub const RTLD_LOCAL: ::c_int = 0;
+pub const RTLD_NODELETE: ::c_int = 0x1000;
+pub const RTLD_NOLOAD: ::c_int = 0x2000;
+pub const RTLD_GLOBAL: ::c_int = 0x100;
+
 extern {
     pub fn getnameinfo(sa: *const ::sockaddr,
                        salen: ::socklen_t,
diff --git a/src/unix/bsd/mod.rs b/src/unix/bsd/mod.rs
index 027033bcec963..2a0104c209a75 100644
--- a/src/unix/bsd/mod.rs
+++ b/src/unix/bsd/mod.rs
@@ -263,6 +263,8 @@ pub const NOFLSH: ::tcflag_t = 0x80000000;
 
 pub const WNOHANG: ::c_int = 1;
 
+pub const RTLD_NOW: ::c_int = 0x2;
+
 f! {
     pub fn FD_CLR(fd: ::c_int, set: *mut fd_set) -> () {
         let bits = mem::size_of_val(&(*set).fds_bits[0]) * 8;
diff --git a/src/unix/bsd/openbsdlike/mod.rs b/src/unix/bsd/openbsdlike/mod.rs
index 1ef5938c7e6aa..2f4b5becdf63c 100644
--- a/src/unix/bsd/openbsdlike/mod.rs
+++ b/src/unix/bsd/openbsdlike/mod.rs
@@ -370,6 +370,8 @@ pub const KERN_PROC_ARGV: ::c_int = 1;
 pub const Q_GETQUOTA: ::c_int = 0x300;
 pub const Q_SETQUOTA: ::c_int = 0x400;
 
+pub const RTLD_GLOBAL: ::c_int = 0x100;
+
 extern {
     pub fn mincore(addr: *mut ::c_void, len: ::size_t,
                    vec: *mut ::c_char) -> ::c_int;
diff --git a/src/unix/bsd/openbsdlike/netbsd.rs b/src/unix/bsd/openbsdlike/netbsd.rs
index 51d5b3fee78aa..9ddb253f9b7be 100644
--- a/src/unix/bsd/openbsdlike/netbsd.rs
+++ b/src/unix/bsd/openbsdlike/netbsd.rs
@@ -325,6 +325,9 @@ pub const TMP_MAX : ::c_uint = 308915776;
 
 pub const NI_MAXHOST: ::socklen_t = 1025;
 
+pub const RTLD_NOLOAD: ::c_int = 0x2000;
+pub const RTLD_LOCAL: ::c_int = 0x200;
+
 extern {
     pub fn getnameinfo(sa: *const ::sockaddr,
                        salen: ::socklen_t,
diff --git a/src/unix/bsd/openbsdlike/openbsd.rs b/src/unix/bsd/openbsdlike/openbsd.rs
index 3f9841d923e1f..8b6d80dc1d073 100644
--- a/src/unix/bsd/openbsdlike/openbsd.rs
+++ b/src/unix/bsd/openbsdlike/openbsd.rs
@@ -222,6 +222,8 @@ pub const TMP_MAX : ::c_uint = 0x7fffffff;
 
 pub const NI_MAXHOST: ::size_t = 256;
 
+pub const RTLD_LOCAL: ::c_int = 0;
+
 extern {
     pub fn getnameinfo(sa: *const ::sockaddr,
                        salen: ::socklen_t,
diff --git a/src/unix/mod.rs b/src/unix/mod.rs
index fb3f270b9cf3a..c56246a32a002 100644
--- a/src/unix/mod.rs
+++ b/src/unix/mod.rs
@@ -131,6 +131,8 @@ pub const POLLNVAL: ::c_short = 0x20;
 
 pub const IF_NAMESIZE: ::size_t = 16;
 
+pub const RTLD_LAZY: ::c_int = 0x1;
+
 cfg_if! {
     if #[cfg(not(stdbuild))] {
         // cargo build, don't pull in anything extra as the libstd  dep
diff --git a/src/unix/notbsd/android/mod.rs b/src/unix/notbsd/android/mod.rs
index f6d47a3e094a3..926dff17ccb3e 100644
--- a/src/unix/notbsd/android/mod.rs
+++ b/src/unix/notbsd/android/mod.rs
@@ -505,6 +505,10 @@ pub const TIOCMSET: ::c_int = 0x5418;
 pub const FIONREAD: ::c_int = 0x541B;
 pub const TIOCCONS: ::c_int = 0x541D;
 
+pub const RTLD_GLOBAL: ::c_int = 0x2;
+pub const RTLD_NOLOAD: ::c_int = 0x4;
+pub const RTLD_NOW: ::c_int = 0;
+
 f! {
     pub fn sigemptyset(set: *mut sigset_t) -> ::c_int {
         *set = 0;
diff --git a/src/unix/notbsd/linux/mips.rs b/src/unix/notbsd/linux/mips.rs
index b809a7f2d3cf7..021902d411816 100644
--- a/src/unix/notbsd/linux/mips.rs
+++ b/src/unix/notbsd/linux/mips.rs
@@ -468,6 +468,10 @@ pub const TIOCMSET: ::c_ulong = 0x741a;
 pub const FIONREAD: ::c_ulong = 0x467f;
 pub const TIOCCONS: ::c_ulong = 0x80047478;
 
+pub const RTLD_DEEPBIND: ::c_int = 0x10;
+pub const RTLD_GLOBAL: ::c_int = 0x4;
+pub const RTLD_NOLOAD: ::c_int = 0x8;
+
 extern {
     pub fn sysctl(name: *mut ::c_int,
                   namelen: ::c_int,
diff --git a/src/unix/notbsd/linux/mod.rs b/src/unix/notbsd/linux/mod.rs
index 9a9ecc47b30ff..95345429ab876 100644
--- a/src/unix/notbsd/linux/mod.rs
+++ b/src/unix/notbsd/linux/mod.rs
@@ -317,6 +317,8 @@ pub const ST_NODIRATIME: ::c_ulong = 2048;
 
 pub const RTLD_NEXT: *mut ::c_void = -1i64 as *mut ::c_void;
 pub const RTLD_DEFAULT: *mut ::c_void = 0i64 as *mut ::c_void;
+pub const RTLD_NODELETE: ::c_int = 0x1000;
+pub const RTLD_NOW: ::c_int = 0x2;
 
 #[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
 pub const MAP_32BIT: ::c_int = 0x0040;
diff --git a/src/unix/notbsd/linux/musl/mod.rs b/src/unix/notbsd/linux/musl/mod.rs
index 1ee023336fc7f..1cbfd8f25e57a 100644
--- a/src/unix/notbsd/linux/musl/mod.rs
+++ b/src/unix/notbsd/linux/musl/mod.rs
@@ -145,6 +145,9 @@ pub const TCSAFLUSH: ::c_int = 2;
 
 pub const TIOCINQ: ::c_ulong = ::FIONREAD;
 
+pub const RTLD_GLOBAL: ::c_int = 0x100;
+pub const RTLD_NOLOAD: ::c_int = 0x4;
+
 extern {
     pub fn getnameinfo(sa: *const ::sockaddr,
                        salen: ::socklen_t,
diff --git a/src/unix/notbsd/linux/other/mod.rs b/src/unix/notbsd/linux/other/mod.rs
index fbc5bd2075748..ed0a3378f990f 100644
--- a/src/unix/notbsd/linux/other/mod.rs
+++ b/src/unix/notbsd/linux/other/mod.rs
@@ -399,6 +399,10 @@ pub const TIOCMSET: ::c_ulong = 0x5418;
 pub const FIONREAD: ::c_ulong = 0x541B;
 pub const TIOCCONS: ::c_ulong = 0x541D;
 
+pub const RTLD_DEEPBIND: ::c_int = 0x8;
+pub const RTLD_GLOBAL: ::c_int = 0x100;
+pub const RTLD_NOLOAD: ::c_int = 0x4;
+
 cfg_if! {
     if #[cfg(any(target_arch = "arm", target_arch = "x86",
                  target_arch = "x86_64"))] {
diff --git a/src/unix/notbsd/mod.rs b/src/unix/notbsd/mod.rs
index 278c2a612aeab..f213a52a74411 100644
--- a/src/unix/notbsd/mod.rs
+++ b/src/unix/notbsd/mod.rs
@@ -532,6 +532,8 @@ pub const SPLICE_F_NONBLOCK: ::c_uint = 0x02;
 pub const SPLICE_F_MORE: ::c_uint = 0x04;
 pub const SPLICE_F_GIFT: ::c_uint = 0x08;
 
+pub const RTLD_LOCAL: ::c_int = 0;
+
 f! {
     pub fn FD_CLR(fd: ::c_int, set: *mut fd_set) -> () {
         let fd = fd as usize;