diff --git a/libc-test/build.rs b/libc-test/build.rs
index 345b8e71772ab..832e9b83b9084 100644
--- a/libc-test/build.rs
+++ b/libc-test/build.rs
@@ -1663,6 +1663,7 @@ fn test_android(target: &str) {
 
             // FIXME: conflicts with standard C headers and is tested in
             // `linux_termios.rs` below:
+            "IBSHIFT" => true,
             "TCGETS2" | "TCSETS2" | "TCSETSW2" | "TCSETSF2" => true,
 
             _ => false,
@@ -2915,6 +2916,7 @@ fn test_linux(target: &str) {
             // FIXME: conflicts with glibc headers and is tested in
             // `linux_termios.rs` below:
             | "BOTHER"
+            | "IBSHIFT"
             | "TCGETS2"
             | "TCSETS2"
             | "TCSETSW2"
@@ -3274,7 +3276,7 @@ fn test_linux_like_apis(target: &str) {
             .skip_static(|_| true)
             .skip_fn(|_| true)
             .skip_const(|c| match c {
-                "BOTHER" => false,
+                "BOTHER" | "IBSHIFT" => false,
                 "TCGETS2" | "TCSETS2" | "TCSETSW2" | "TCSETSF2" => false,
                 _ => true,
             })
diff --git a/libc-test/semver/android.txt b/libc-test/semver/android.txt
index 9e70cabfecde4..2649816a59b5f 100644
--- a/libc-test/semver/android.txt
+++ b/libc-test/semver/android.txt
@@ -665,6 +665,7 @@ GRPQUOTA
 HPFS_SUPER_MAGIC
 HUGETLBFS_MAGIC
 HUPCL
+IBSHIFT
 ICANON
 ICRNL
 IEXTEN
diff --git a/libc-test/semver/linux.txt b/libc-test/semver/linux.txt
index 8314bafd0d347..4972bc7d571d5 100644
--- a/libc-test/semver/linux.txt
+++ b/libc-test/semver/linux.txt
@@ -645,6 +645,7 @@ GLOB_NOSORT
 GLOB_NOSPACE
 GRND_NONBLOCK
 GRND_RANDOM
+IBSHIFT
 IFA_ADDRESS
 IFA_ANYCAST
 IFA_BROADCAST
diff --git a/src/unix/linux_like/android/mod.rs b/src/unix/linux_like/android/mod.rs
index 04cc89ea2724a..7973509964e3a 100644
--- a/src/unix/linux_like/android/mod.rs
+++ b/src/unix/linux_like/android/mod.rs
@@ -1538,6 +1538,7 @@ pub const B2500000: ::speed_t = 0o010014;
 pub const B3000000: ::speed_t = 0o010015;
 pub const B3500000: ::speed_t = 0o010016;
 pub const B4000000: ::speed_t = 0o010017;
+pub const IBSHIFT: ::tcflag_t = 16;
 
 pub const EAI_AGAIN: ::c_int = 2;
 pub const EAI_BADFLAGS: ::c_int = 3;
diff --git a/src/unix/linux_like/linux/arch/generic/mod.rs b/src/unix/linux_like/linux/arch/generic/mod.rs
index 4a17effe81e0e..8d5852f18c902 100644
--- a/src/unix/linux_like/linux/arch/generic/mod.rs
+++ b/src/unix/linux_like/linux/arch/generic/mod.rs
@@ -134,3 +134,4 @@ pub const TIOCM_RI: ::c_int = TIOCM_RNG;
 pub const TIOCM_DSR: ::c_int = 0x100;
 
 pub const BOTHER: ::speed_t = 0o010000;
+pub const IBSHIFT: ::tcflag_t = 16;
diff --git a/src/unix/linux_like/linux/arch/mips/mod.rs b/src/unix/linux_like/linux/arch/mips/mod.rs
index 587cb7b9b38d8..126618ab16a12 100644
--- a/src/unix/linux_like/linux/arch/mips/mod.rs
+++ b/src/unix/linux_like/linux/arch/mips/mod.rs
@@ -130,3 +130,4 @@ pub const TIOCM_RI: ::c_int = TIOCM_RNG;
 pub const TIOCM_DSR: ::c_int = 0x400;
 
 pub const BOTHER: ::speed_t = 0o010000;
+pub const IBSHIFT: ::tcflag_t = 16;
diff --git a/src/unix/linux_like/linux/arch/powerpc/mod.rs b/src/unix/linux_like/linux/arch/powerpc/mod.rs
index 58e14800cd2be..1b492c362dd6d 100644
--- a/src/unix/linux_like/linux/arch/powerpc/mod.rs
+++ b/src/unix/linux_like/linux/arch/powerpc/mod.rs
@@ -108,3 +108,4 @@ pub const TIOCM_RI: ::c_int = TIOCM_RNG;
 pub const TIOCM_DSR: ::c_int = 0x100;
 
 pub const BOTHER: ::speed_t = 0o0037;
+pub const IBSHIFT: ::tcflag_t = 16;
diff --git a/src/unix/linux_like/linux/arch/sparc/mod.rs b/src/unix/linux_like/linux/arch/sparc/mod.rs
index ea13b8463b4db..36db21b0618f4 100644
--- a/src/unix/linux_like/linux/arch/sparc/mod.rs
+++ b/src/unix/linux_like/linux/arch/sparc/mod.rs
@@ -122,3 +122,4 @@ pub const TIOCM_RI: ::c_int = TIOCM_RNG;
 pub const TIOCM_DSR: ::c_int = 0x100;
 
 pub const BOTHER: ::speed_t = 0x1000;
+pub const IBSHIFT: ::tcflag_t = 16;