diff --git a/src/fuchsia/mod.rs b/src/fuchsia/mod.rs
index 1b3ce259cb89a..7993e93061b27 100644
--- a/src/fuchsia/mod.rs
+++ b/src/fuchsia/mod.rs
@@ -7,16 +7,6 @@ use crate::prelude::*;
 
 // PUB_TYPE
 
-pub type c_schar = i8;
-pub type c_uchar = u8;
-pub type c_short = i16;
-pub type c_ushort = u16;
-pub type c_int = i32;
-pub type c_uint = u32;
-pub type c_float = f32;
-pub type c_double = f64;
-pub type c_longlong = i64;
-pub type c_ulonglong = u64;
 pub type intmax_t = i64;
 pub type uintmax_t = u64;
 
@@ -88,9 +78,6 @@ pub type fsblkcnt_t = c_ulonglong;
 pub type fsfilcnt_t = c_ulonglong;
 pub type rlim_t = c_ulonglong;
 
-pub type c_long = i64;
-pub type c_ulong = u64;
-
 // FIXME(fuchsia): why are these uninhabited types? that seems... wrong?
 // Presumably these should be `()` or an `extern type` (when that stabilizes).
 #[cfg_attr(feature = "extra_traits", derive(Debug))]
diff --git a/src/hermit.rs b/src/hermit.rs
index 03947bc01ade5..65d0bf374d8cd 100644
--- a/src/hermit.rs
+++ b/src/hermit.rs
@@ -2,24 +2,11 @@
 
 use crate::prelude::*;
 
-pub type c_schar = i8;
-pub type c_uchar = u8;
-pub type c_short = i16;
-pub type c_ushort = u16;
-pub type c_int = i32;
-pub type c_uint = u32;
-pub type c_long = i64;
-pub type c_ulong = u64;
-pub type c_longlong = i64;
-pub type c_ulonglong = u64;
 pub type intmax_t = i64;
 pub type uintmax_t = u64;
 pub type intptr_t = isize;
 pub type uintptr_t = usize;
 
-pub type c_float = f32;
-pub type c_double = f64;
-
 pub type size_t = usize;
 pub type ssize_t = isize;
 pub type ptrdiff_t = isize;
diff --git a/src/lib.rs b/src/lib.rs
index bfbfb34415c3e..255f4550056ce 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -38,130 +38,98 @@ cfg_if! {
 
 pub use core::ffi::c_void;
 
-cfg_if! {
-    // This configuration comes from `rust-lang/rust` in `library/core/src/ffi/mod.rs`.
-    if #[cfg(all(
-        not(windows),
-        // FIXME(ctest): just use `target_vendor` = "apple"` once `ctest` supports it
-        not(any(
-            target_os = "macos",
-            target_os = "ios",
-            target_os = "tvos",
-            target_os = "watchos",
-            target_os = "visionos",
-        )),
-        any(
-            target_arch = "aarch64",
-            target_arch = "arm",
-            target_arch = "csky",
-            target_arch = "hexagon",
-            target_arch = "msp430",
-            target_arch = "powerpc",
-            target_arch = "powerpc64",
-            target_arch = "riscv64",
-            target_arch = "riscv32",
-            target_arch = "s390x",
-            target_arch = "xtensa",
-        )
-    ))] {
-        pub type c_char = u8;
-    } else {
-        pub type c_char = i8;
-    }
-}
-
 cfg_if! {
     if #[cfg(windows)] {
-        mod fixed_width_ints;
-        pub use crate::fixed_width_ints::*;
+        mod primitives;
+        pub use crate::primitives::*;
 
         mod windows;
         pub use crate::windows::*;
 
         prelude!();
     } else if #[cfg(target_os = "fuchsia")] {
-        mod fixed_width_ints;
-        pub use crate::fixed_width_ints::*;
+        mod primitives;
+        pub use crate::primitives::*;
 
         mod fuchsia;
         pub use crate::fuchsia::*;
 
         prelude!();
     } else if #[cfg(target_os = "switch")] {
-        mod fixed_width_ints;
-        pub use fixed_width_ints::*;
+        mod primitives;
+        pub use primitives::*;
 
         mod switch;
         pub use switch::*;
 
         prelude!();
     } else if #[cfg(target_os = "vxworks")] {
-        mod fixed_width_ints;
-        pub use crate::fixed_width_ints::*;
+        mod primitives;
+        pub use crate::primitives::*;
 
         mod vxworks;
         pub use crate::vxworks::*;
 
         prelude!();
     } else if #[cfg(target_os = "solid_asp3")] {
-        mod fixed_width_ints;
-        pub use crate::fixed_width_ints::*;
+        mod primitives;
+        pub use crate::primitives::*;
 
         mod solid;
         pub use crate::solid::*;
 
         prelude!();
     } else if #[cfg(unix)] {
-        mod fixed_width_ints;
-        pub use crate::fixed_width_ints::*;
+        mod primitives;
+        pub use crate::primitives::*;
 
         mod unix;
         pub use crate::unix::*;
 
         prelude!();
     } else if #[cfg(target_os = "hermit")] {
-        mod fixed_width_ints;
-        pub use crate::fixed_width_ints::*;
+        mod primitives;
+        pub use crate::primitives::*;
 
         mod hermit;
         pub use crate::hermit::*;
 
         prelude!();
     } else if #[cfg(target_os = "teeos")] {
-        mod fixed_width_ints;
-        pub use fixed_width_ints::*;
+        mod primitives;
+        pub use primitives::*;
 
         mod teeos;
         pub use teeos::*;
 
         prelude!();
     } else if #[cfg(target_os = "trusty")] {
-        mod fixed_width_ints;
-        pub use crate::fixed_width_ints::*;
+        mod primitives;
+        pub use crate::primitives::*;
 
         mod trusty;
         pub use crate::trusty::*;
 
         prelude!();
     } else if #[cfg(all(target_env = "sgx", target_vendor = "fortanix"))] {
-        mod fixed_width_ints;
-        pub use crate::fixed_width_ints::*;
+        mod primitives;
+        pub use crate::primitives::*;
 
         mod sgx;
         pub use crate::sgx::*;
 
         prelude!();
     } else if #[cfg(any(target_env = "wasi", target_os = "wasi"))] {
-        mod fixed_width_ints;
-        pub use crate::fixed_width_ints::*;
+        mod primitives;
+        pub use crate::primitives::*;
 
         mod wasi;
         pub use crate::wasi::*;
 
         prelude!();
     } else if #[cfg(target_os = "xous")] {
-        mod fixed_width_ints;
-        pub use crate::fixed_width_ints::*;
+        mod primitives;
+        pub use crate::primitives::*;
 
         mod xous;
         pub use crate::xous::*;
diff --git a/src/fixed_width_ints.rs b/src/primitives.rs
similarity index 75%
rename from src/fixed_width_ints.rs
rename to src/primitives.rs
index 1900833ff78f9..5a30040e36e96 100644
--- a/src/fixed_width_ints.rs
+++ b/src/primitives.rs
@@ -1,6 +1,67 @@
-//! This module contains type aliases for C's fixed-width integer types .
+//! This module contains type aliases for C's platform-specific types
+//! and fixed-width integer types.
 //!
-//! These aliases are deprecated: use the Rust types instead.
+//! The platform-specific types definitions were taken from rust-lang/rust in
+//! library/core/src/ffi/primitives.rs
+//!
+//! The fixed-width integer aliases are deprecated: use the Rust types instead.
+
+pub type c_schar = i8;
+pub type c_uchar = u8;
+pub type c_short = i16;
+pub type c_ushort = u16;
+
+pub type c_longlong = i64;
+pub type c_ulonglong = u64;
+
+pub type c_float = f32;
+pub type c_double = f64;
+
+cfg_if! {
+    if #[cfg(all(
+        not(windows),
+        not(target_vendor = "apple"),
+        any(
+            target_arch = "aarch64",
+            target_arch = "arm",
+            target_arch = "csky",
+            target_arch = "hexagon",
+            target_arch = "msp430",
+            target_arch = "powerpc",
+            target_arch = "powerpc64",
+            target_arch = "riscv32",
+            target_arch = "riscv64",
+            target_arch = "s390x",
+            target_arch = "xtensa",
+        )
+    ))] {
+        pub type c_char = u8;
+    } else {
+        // On every other target, c_char is signed.
+        pub type c_char = i8;
+    }
+}
+
+cfg_if! {
+    if #[cfg(any(target_arch = "avr", target_arch = "msp430"))] {
+        pub type c_int = i16;
+        pub type c_uint = u16;
+    } else {
+        pub type c_int = i32;
+        pub type c_uint = u32;
+    }
+}
+
+cfg_if! {
+    if #[cfg(all(target_pointer_width = "64", not(windows)))] {
+        pub type c_long = i64;
+        pub type c_ulong = u64;
+    } else {
+        // The minimal size of `long` in the C standard is 32 bits
+        pub type c_long = i32;
+        pub type c_ulong = u32;
+    }
+}
 
 #[deprecated(since = "0.2.55", note = "Use i8 instead.")]
 pub type int8_t = i8;
diff --git a/src/sgx.rs b/src/sgx.rs
index 65eded63ad460..9cf9c6d3b41b8 100644
--- a/src/sgx.rs
+++ b/src/sgx.rs
@@ -1,15 +1,7 @@
 //! SGX C types definition
 
-pub type c_schar = i8;
-pub type c_uchar = u8;
-pub type c_short = i16;
-pub type c_ushort = u16;
-pub type c_int = i32;
-pub type c_uint = u32;
-pub type c_float = f32;
-pub type c_double = f64;
-pub type c_longlong = i64;
-pub type c_ulonglong = u64;
+use crate::prelude::*;
+
 pub type intmax_t = i64;
 pub type uintmax_t = u64;
 
@@ -19,8 +11,5 @@ pub type intptr_t = isize;
 pub type uintptr_t = usize;
 pub type ssize_t = isize;
 
-pub type c_long = i64;
-pub type c_ulong = u64;
-
 pub const INT_MIN: c_int = -2147483648;
 pub const INT_MAX: c_int = 2147483647;
diff --git a/src/solid/aarch64.rs b/src/solid/aarch64.rs
index 630c7db54b55b..376783c8234ba 100644
--- a/src/solid/aarch64.rs
+++ b/src/solid/aarch64.rs
@@ -1,3 +1 @@
 pub type wchar_t = u32;
-pub type c_long = i64;
-pub type c_ulong = u64;
diff --git a/src/solid/arm.rs b/src/solid/arm.rs
index 01fc7262f03e2..376783c8234ba 100644
--- a/src/solid/arm.rs
+++ b/src/solid/arm.rs
@@ -1,3 +1 @@
 pub type wchar_t = u32;
-pub type c_long = i32;
-pub type c_ulong = u32;
diff --git a/src/solid/mod.rs b/src/solid/mod.rs
index 19c9b6aed344b..965c5bb1aa522 100644
--- a/src/solid/mod.rs
+++ b/src/solid/mod.rs
@@ -4,16 +4,6 @@
 
 use crate::prelude::*;
 
-pub type c_schar = i8;
-pub type c_uchar = u8;
-pub type c_short = i16;
-pub type c_ushort = u16;
-pub type c_int = i32;
-pub type c_uint = u32;
-pub type c_float = f32;
-pub type c_double = f64;
-pub type c_longlong = i64;
-pub type c_ulonglong = u64;
 pub type intmax_t = i64;
 pub type uintmax_t = u64;
 
diff --git a/src/switch.rs b/src/switch.rs
index 1875ea81ad1ec..d965ff7005fb2 100644
--- a/src/switch.rs
+++ b/src/switch.rs
@@ -1,15 +1,5 @@
 //! Switch C type definitions
 
-pub type c_schar = i8;
-pub type c_uchar = u8;
-pub type c_short = i16;
-pub type c_ushort = u16;
-pub type c_int = i32;
-pub type c_uint = u32;
-pub type c_float = f32;
-pub type c_double = f64;
-pub type c_longlong = i64;
-pub type c_ulonglong = u64;
 pub type intmax_t = i64;
 pub type uintmax_t = u64;
 
@@ -20,8 +10,6 @@ pub type uintptr_t = usize;
 pub type ssize_t = isize;
 
 pub type off_t = i64;
-pub type c_long = i64;
-pub type c_ulong = u64;
 pub type wchar_t = u32;
 
 pub const INT_MIN: c_int = -2147483648;
diff --git a/src/teeos/mod.rs b/src/teeos/mod.rs
index 1ec2706cfdf76..9929e70e61e63 100644
--- a/src/teeos/mod.rs
+++ b/src/teeos/mod.rs
@@ -7,28 +7,8 @@
 
 use crate::prelude::*;
 
-pub type c_schar = i8;
-
-pub type c_uchar = u8;
-
-pub type c_short = i16;
-
-pub type c_ushort = u16;
-
-pub type c_int = i32;
-
-pub type c_uint = u32;
-
 pub type c_bool = i32;
 
-pub type c_float = f32;
-
-pub type c_double = f64;
-
-pub type c_longlong = i64;
-
-pub type c_ulonglong = u64;
-
 pub type intmax_t = i64;
 
 pub type uintmax_t = u64;
@@ -47,10 +27,6 @@ pub type pid_t = c_int;
 
 pub type wchar_t = u32;
 
-pub type c_long = i64;
-
-pub type c_ulong = u64;
-
 // long double in C means A float point value, which has 128bit length.
 // but some bit maybe not used, so the real length of long double could be 80(x86) or 128(power pc/IEEE)
 // this is different from f128(not stable and not included default) in Rust, so we use u128 for FFI(Rust to C).
diff --git a/src/trusty.rs b/src/trusty.rs
index db908d5c6d47a..7441aade0631e 100644
--- a/src/trusty.rs
+++ b/src/trusty.rs
@@ -4,26 +4,6 @@ pub type ssize_t = isize;
 
 pub type off_t = i64;
 
-pub type c_schar = i8;
-pub type c_uchar = u8;
-pub type c_short = i16;
-pub type c_ushort = u16;
-pub type c_int = i32;
-pub type c_uint = u32;
-
-cfg_if! {
-    if #[cfg(target_pointer_width = "32")] {
-        pub type c_long = i32;
-        pub type c_ulong = u32;
-    } else if #[cfg(target_pointer_width = "64")] {
-        pub type c_long = i64;
-        pub type c_ulong = u64;
-    }
-}
-
-pub type c_longlong = i64;
-pub type c_ulonglong = u64;
-
 pub type c_uint8_t = u8;
 pub type c_uint16_t = u16;
 pub type c_uint32_t = u32;
@@ -37,9 +17,6 @@ pub type c_int64_t = i64;
 pub type intptr_t = isize;
 pub type uintptr_t = usize;
 
-pub type c_float = f32;
-pub type c_double = f64;
-
 pub type time_t = c_long;
 
 pub type clockid_t = c_int;
diff --git a/src/unix/aix/powerpc64.rs b/src/unix/aix/powerpc64.rs
index 921774611e299..fcb9e6edfafa7 100644
--- a/src/unix/aix/powerpc64.rs
+++ b/src/unix/aix/powerpc64.rs
@@ -1,9 +1,6 @@
 use crate::off_t;
 use crate::prelude::*;
 
-pub type c_long = i64;
-pub type c_ulong = u64;
-
 s! {
     pub struct sigset_t {
         pub ss_set: [c_ulong; 4],
diff --git a/src/unix/bsd/apple/b32/mod.rs b/src/unix/bsd/apple/b32/mod.rs
index 70f8de79af7b6..4fec58f76be47 100644
--- a/src/unix/bsd/apple/b32/mod.rs
+++ b/src/unix/bsd/apple/b32/mod.rs
@@ -2,8 +2,6 @@
 
 use crate::prelude::*;
 
-pub type c_long = i32;
-pub type c_ulong = u32;
 pub type boolean_t = c_int;
 
 s! {
diff --git a/src/unix/bsd/apple/b64/mod.rs b/src/unix/bsd/apple/b64/mod.rs
index b09bcb9dad332..98dccd3d49ddd 100644
--- a/src/unix/bsd/apple/b64/mod.rs
+++ b/src/unix/bsd/apple/b64/mod.rs
@@ -2,9 +2,6 @@
 
 use crate::prelude::*;
 
-pub type c_long = i64;
-pub type c_ulong = u64;
-
 s! {
     pub struct timeval32 {
         pub tv_sec: i32,
diff --git a/src/unix/bsd/freebsdlike/dragonfly/mod.rs b/src/unix/bsd/freebsdlike/dragonfly/mod.rs
index 7ce4fdf854d39..009e3985f480b 100644
--- a/src/unix/bsd/freebsdlike/dragonfly/mod.rs
+++ b/src/unix/bsd/freebsdlike/dragonfly/mod.rs
@@ -10,8 +10,6 @@ pub type nlink_t = u32;
 pub type blksize_t = i64;
 pub type clockid_t = c_ulong;
 
-pub type c_long = i64;
-pub type c_ulong = u64;
 pub type time_t = i64;
 pub type suseconds_t = i64;
 
diff --git a/src/unix/bsd/freebsdlike/freebsd/aarch64.rs b/src/unix/bsd/freebsdlike/freebsd/aarch64.rs
index 0201008e485fb..ae93648ebd94f 100644
--- a/src/unix/bsd/freebsdlike/freebsd/aarch64.rs
+++ b/src/unix/bsd/freebsdlike/freebsd/aarch64.rs
@@ -1,7 +1,5 @@
 use crate::prelude::*;
 
-pub type c_long = i64;
-pub type c_ulong = u64;
 pub type clock_t = i32;
 pub type wchar_t = u32;
 pub type time_t = i64;
diff --git a/src/unix/bsd/freebsdlike/freebsd/arm.rs b/src/unix/bsd/freebsdlike/freebsd/arm.rs
index 1624e655a0f4c..e29c9cef3981e 100644
--- a/src/unix/bsd/freebsdlike/freebsd/arm.rs
+++ b/src/unix/bsd/freebsdlike/freebsd/arm.rs
@@ -1,7 +1,5 @@
 use crate::prelude::*;
 
-pub type c_long = i32;
-pub type c_ulong = u32;
 pub type clock_t = u32;
 pub type wchar_t = u32;
 pub type time_t = i64;
diff --git a/src/unix/bsd/freebsdlike/freebsd/powerpc.rs b/src/unix/bsd/freebsdlike/freebsd/powerpc.rs
index 6c8c973d570d1..9fde25d37b62f 100644
--- a/src/unix/bsd/freebsdlike/freebsd/powerpc.rs
+++ b/src/unix/bsd/freebsdlike/freebsd/powerpc.rs
@@ -1,7 +1,5 @@
 use crate::prelude::*;
 
-pub type c_long = i32;
-pub type c_ulong = u32;
 pub type clock_t = u32;
 pub type wchar_t = i32;
 pub type time_t = i64;
diff --git a/src/unix/bsd/freebsdlike/freebsd/powerpc64.rs b/src/unix/bsd/freebsdlike/freebsd/powerpc64.rs
index a812568b38e7d..e7df7f7737997 100644
--- a/src/unix/bsd/freebsdlike/freebsd/powerpc64.rs
+++ b/src/unix/bsd/freebsdlike/freebsd/powerpc64.rs
@@ -1,7 +1,5 @@
 use crate::prelude::*;
 
-pub type c_long = i64;
-pub type c_ulong = u64;
 pub type clock_t = u32;
 pub type wchar_t = i32;
 pub type time_t = i64;
diff --git a/src/unix/bsd/freebsdlike/freebsd/riscv64.rs b/src/unix/bsd/freebsdlike/freebsd/riscv64.rs
index 212413cbe22af..449a29f7d3df4 100644
--- a/src/unix/bsd/freebsdlike/freebsd/riscv64.rs
+++ b/src/unix/bsd/freebsdlike/freebsd/riscv64.rs
@@ -1,7 +1,5 @@
 use crate::prelude::*;
 
-pub type c_long = i64;
-pub type c_ulong = u64;
 pub type clock_t = i32;
 pub type wchar_t = c_int;
 pub type time_t = i64;
diff --git a/src/unix/bsd/freebsdlike/freebsd/x86.rs b/src/unix/bsd/freebsdlike/freebsd/x86.rs
index bd1267b27cbf4..7dfd670fb55bf 100644
--- a/src/unix/bsd/freebsdlike/freebsd/x86.rs
+++ b/src/unix/bsd/freebsdlike/freebsd/x86.rs
@@ -1,7 +1,5 @@
 use crate::prelude::*;
 
-pub type c_long = i32;
-pub type c_ulong = u32;
 pub type clock_t = c_ulong;
 pub type wchar_t = i32;
 pub type time_t = i32;
diff --git a/src/unix/bsd/freebsdlike/freebsd/x86_64/mod.rs b/src/unix/bsd/freebsdlike/freebsd/x86_64/mod.rs
index 199ea643fdab4..fde274bb15a69 100644
--- a/src/unix/bsd/freebsdlike/freebsd/x86_64/mod.rs
+++ b/src/unix/bsd/freebsdlike/freebsd/x86_64/mod.rs
@@ -1,7 +1,5 @@
 use crate::prelude::*;
 
-pub type c_long = i64;
-pub type c_ulong = u64;
 pub type clock_t = i32;
 pub type wchar_t = i32;
 pub type time_t = i64;
diff --git a/src/unix/bsd/netbsdlike/netbsd/aarch64.rs b/src/unix/bsd/netbsdlike/netbsd/aarch64.rs
index dbac03d2fb2ac..b511fc8457752 100644
--- a/src/unix/bsd/netbsdlike/netbsd/aarch64.rs
+++ b/src/unix/bsd/netbsdlike/netbsd/aarch64.rs
@@ -1,8 +1,6 @@
 use crate::prelude::*;
 use crate::PT_FIRSTMACH;
 
-pub type c_long = i64;
-pub type c_ulong = u64;
 pub type greg_t = u64;
 pub type __cpu_simple_lock_nv_t = c_uchar;
 
diff --git a/src/unix/bsd/netbsdlike/netbsd/arm.rs b/src/unix/bsd/netbsdlike/netbsd/arm.rs
index 698eba93b31a5..b252862dfe650 100644
--- a/src/unix/bsd/netbsdlike/netbsd/arm.rs
+++ b/src/unix/bsd/netbsdlike/netbsd/arm.rs
@@ -1,8 +1,6 @@
 use crate::prelude::*;
 use crate::PT_FIRSTMACH;
 
-pub type c_long = i32;
-pub type c_ulong = u32;
 pub type __cpu_simple_lock_nv_t = c_int;
 
 pub(crate) const _ALIGNBYTES: usize = mem::size_of::<c_longlong>() - 1;
diff --git a/src/unix/bsd/netbsdlike/netbsd/mips.rs b/src/unix/bsd/netbsdlike/netbsd/mips.rs
index 028deb0cfbf76..eabfe1bbcc1e8 100644
--- a/src/unix/bsd/netbsdlike/netbsd/mips.rs
+++ b/src/unix/bsd/netbsdlike/netbsd/mips.rs
@@ -1,8 +1,6 @@
 use crate::prelude::*;
 use crate::PT_FIRSTMACH;
 
-pub type c_long = i32;
-pub type c_ulong = u32;
 pub type __cpu_simple_lock_nv_t = c_int;
 
 pub(crate) const _ALIGNBYTES: usize = mem::size_of::<c_longlong>() - 1;
diff --git a/src/unix/bsd/netbsdlike/netbsd/powerpc.rs b/src/unix/bsd/netbsdlike/netbsd/powerpc.rs
index 20eba6849a3ee..fc4cc3898e12a 100644
--- a/src/unix/bsd/netbsdlike/netbsd/powerpc.rs
+++ b/src/unix/bsd/netbsdlike/netbsd/powerpc.rs
@@ -1,8 +1,6 @@
 use crate::prelude::*;
 use crate::PT_FIRSTMACH;
 
-pub type c_long = i32;
-pub type c_ulong = u32;
 pub type __cpu_simple_lock_nv_t = c_int;
 
 pub(crate) const _ALIGNBYTES: usize = mem::size_of::<c_double>() - 1;
diff --git a/src/unix/bsd/netbsdlike/netbsd/riscv64.rs b/src/unix/bsd/netbsdlike/netbsd/riscv64.rs
index 0437b994ca276..550c3bd7bb4ea 100644
--- a/src/unix/bsd/netbsdlike/netbsd/riscv64.rs
+++ b/src/unix/bsd/netbsdlike/netbsd/riscv64.rs
@@ -2,8 +2,6 @@ use PT_FIRSTMACH;
 
 use crate::prelude::*;
 
-pub type c_long = i64;
-pub type c_ulong = u64;
 pub type __greg_t = u64;
 pub type __cpu_simple_lock_nv_t = c_int;
 pub type __gregset = [__greg_t; _NGREG];
diff --git a/src/unix/bsd/netbsdlike/netbsd/sparc64.rs b/src/unix/bsd/netbsdlike/netbsd/sparc64.rs
index 3cfe535e7edfa..91622f7eea3fa 100644
--- a/src/unix/bsd/netbsdlike/netbsd/sparc64.rs
+++ b/src/unix/bsd/netbsdlike/netbsd/sparc64.rs
@@ -1,7 +1,5 @@
 use crate::prelude::*;
 
-pub type c_long = i64;
-pub type c_ulong = u64;
 pub type __cpu_simple_lock_nv_t = c_uchar;
 
 // should be pub(crate), but that requires Rust 1.18.0
diff --git a/src/unix/bsd/netbsdlike/netbsd/x86.rs b/src/unix/bsd/netbsdlike/netbsd/x86.rs
index 04741f2dc1f4e..92e160d9bca0c 100644
--- a/src/unix/bsd/netbsdlike/netbsd/x86.rs
+++ b/src/unix/bsd/netbsdlike/netbsd/x86.rs
@@ -1,7 +1,5 @@
 use crate::prelude::*;
 
-pub type c_long = i32;
-pub type c_ulong = u32;
 pub type __cpu_simple_lock_nv_t = c_uchar;
 
 pub(crate) const _ALIGNBYTES: usize = mem::size_of::<c_int>() - 1;
diff --git a/src/unix/bsd/netbsdlike/netbsd/x86_64.rs b/src/unix/bsd/netbsdlike/netbsd/x86_64.rs
index 52f3da771a157..5d31c0661e9c6 100644
--- a/src/unix/bsd/netbsdlike/netbsd/x86_64.rs
+++ b/src/unix/bsd/netbsdlike/netbsd/x86_64.rs
@@ -1,8 +1,6 @@
 use crate::prelude::*;
 use crate::PT_FIRSTMACH;
 
-pub type c_long = i64;
-pub type c_ulong = u64;
 pub type c___greg_t = u64;
 pub type __cpu_simple_lock_nv_t = c_uchar;
 
diff --git a/src/unix/bsd/netbsdlike/openbsd/aarch64.rs b/src/unix/bsd/netbsdlike/openbsd/aarch64.rs
index 4cd0b32549835..2c4b1df26ce83 100644
--- a/src/unix/bsd/netbsdlike/openbsd/aarch64.rs
+++ b/src/unix/bsd/netbsdlike/openbsd/aarch64.rs
@@ -1,7 +1,5 @@
 use crate::prelude::*;
 
-pub type c_long = i64;
-pub type c_ulong = u64;
 pub type ucontext_t = sigcontext;
 
 s! {
diff --git a/src/unix/bsd/netbsdlike/openbsd/arm.rs b/src/unix/bsd/netbsdlike/openbsd/arm.rs
index 7fd17cf65a55f..ae91cde0a1739 100644
--- a/src/unix/bsd/netbsdlike/openbsd/arm.rs
+++ b/src/unix/bsd/netbsdlike/openbsd/arm.rs
@@ -1,8 +1,5 @@
 use crate::prelude::*;
 
-pub type c_long = i32;
-pub type c_ulong = u32;
-
 pub(crate) const _ALIGNBYTES: usize = mem::size_of::<c_double>() - 1;
 
 pub const _MAX_PAGE_SHIFT: u32 = 12;
diff --git a/src/unix/bsd/netbsdlike/openbsd/mips64.rs b/src/unix/bsd/netbsdlike/openbsd/mips64.rs
index 17ebae2889f17..162ceda265df9 100644
--- a/src/unix/bsd/netbsdlike/openbsd/mips64.rs
+++ b/src/unix/bsd/netbsdlike/openbsd/mips64.rs
@@ -1,6 +1,3 @@
-pub type c_long = i64;
-pub type c_ulong = u64;
-
 #[doc(hidden)]
 pub const _ALIGNBYTES: usize = 7;
 
diff --git a/src/unix/bsd/netbsdlike/openbsd/powerpc.rs b/src/unix/bsd/netbsdlike/openbsd/powerpc.rs
index 7fd17cf65a55f..ae91cde0a1739 100644
--- a/src/unix/bsd/netbsdlike/openbsd/powerpc.rs
+++ b/src/unix/bsd/netbsdlike/openbsd/powerpc.rs
@@ -1,8 +1,5 @@
 use crate::prelude::*;
 
-pub type c_long = i32;
-pub type c_ulong = u32;
-
 pub(crate) const _ALIGNBYTES: usize = mem::size_of::<c_double>() - 1;
 
 pub const _MAX_PAGE_SHIFT: u32 = 12;
diff --git a/src/unix/bsd/netbsdlike/openbsd/powerpc64.rs b/src/unix/bsd/netbsdlike/openbsd/powerpc64.rs
index 1a3b452091ce0..1c3d8df3b7956 100644
--- a/src/unix/bsd/netbsdlike/openbsd/powerpc64.rs
+++ b/src/unix/bsd/netbsdlike/openbsd/powerpc64.rs
@@ -1,8 +1,5 @@
 use crate::prelude::*;
 
-pub type c_long = i64;
-pub type c_ulong = u64;
-
 pub(crate) const _ALIGNBYTES: usize = mem::size_of::<c_long>() - 1;
 
 pub const _MAX_PAGE_SHIFT: u32 = 12;
diff --git a/src/unix/bsd/netbsdlike/openbsd/riscv64.rs b/src/unix/bsd/netbsdlike/openbsd/riscv64.rs
index d37e9a67e6888..a0865406b80f3 100644
--- a/src/unix/bsd/netbsdlike/openbsd/riscv64.rs
+++ b/src/unix/bsd/netbsdlike/openbsd/riscv64.rs
@@ -1,7 +1,5 @@
 use crate::prelude::*;
 
-pub type c_long = i64;
-pub type c_ulong = u64;
 pub type ucontext_t = sigcontext;
 
 s! {
diff --git a/src/unix/bsd/netbsdlike/openbsd/sparc64.rs b/src/unix/bsd/netbsdlike/openbsd/sparc64.rs
index f8e165a7de299..88481f4f014e8 100644
--- a/src/unix/bsd/netbsdlike/openbsd/sparc64.rs
+++ b/src/unix/bsd/netbsdlike/openbsd/sparc64.rs
@@ -1,6 +1,3 @@
-pub type c_long = i64;
-pub type c_ulong = u64;
-
 #[doc(hidden)]
 pub const _ALIGNBYTES: usize = 0xf;
 
diff --git a/src/unix/bsd/netbsdlike/openbsd/x86.rs b/src/unix/bsd/netbsdlike/openbsd/x86.rs
index cac4ea7f8e94c..d2cf7832edd7f 100644
--- a/src/unix/bsd/netbsdlike/openbsd/x86.rs
+++ b/src/unix/bsd/netbsdlike/openbsd/x86.rs
@@ -1,8 +1,5 @@
 use crate::prelude::*;
 
-pub type c_long = i32;
-pub type c_ulong = u32;
-
 pub(crate) const _ALIGNBYTES: usize = mem::size_of::<c_int>() - 1;
 
 pub const _MAX_PAGE_SHIFT: u32 = 12;
diff --git a/src/unix/bsd/netbsdlike/openbsd/x86_64.rs b/src/unix/bsd/netbsdlike/openbsd/x86_64.rs
index 683046836320d..db9114e27cb60 100644
--- a/src/unix/bsd/netbsdlike/openbsd/x86_64.rs
+++ b/src/unix/bsd/netbsdlike/openbsd/x86_64.rs
@@ -1,8 +1,6 @@
 use crate::prelude::*;
 use crate::PT_FIRSTMACH;
 
-pub type c_long = i64;
-pub type c_ulong = u64;
 pub type ucontext_t = sigcontext;
 
 s! {
diff --git a/src/unix/haiku/b32.rs b/src/unix/haiku/b32.rs
index c1135c834ef8b..1aa27e615ca4e 100644
--- a/src/unix/haiku/b32.rs
+++ b/src/unix/haiku/b32.rs
@@ -1,5 +1,3 @@
-pub type c_long = i32;
-pub type c_ulong = u32;
 pub type time_t = i32;
 
 pub type Elf_Addr = crate::Elf32_Addr;
diff --git a/src/unix/haiku/b64.rs b/src/unix/haiku/b64.rs
index 96617042cf2ab..3355241fdb797 100644
--- a/src/unix/haiku/b64.rs
+++ b/src/unix/haiku/b64.rs
@@ -1,5 +1,3 @@
-pub type c_ulong = u64;
-pub type c_long = i64;
 pub type time_t = i64;
 
 pub type Elf_Addr = crate::Elf64_Addr;
diff --git a/src/unix/hurd/b32.rs b/src/unix/hurd/b32.rs
index 5223d549dd025..e706789006dba 100644
--- a/src/unix/hurd/b32.rs
+++ b/src/unix/hurd/b32.rs
@@ -1,8 +1,5 @@
 use crate::prelude::*;
 
-pub type c_long = i32;
-pub type c_ulong = u32;
-
 pub type __int64_t = c_longlong;
 pub type __uint64_t = c_ulonglong;
 
diff --git a/src/unix/hurd/b64.rs b/src/unix/hurd/b64.rs
index 1954c27f88563..a44428c575adf 100644
--- a/src/unix/hurd/b64.rs
+++ b/src/unix/hurd/b64.rs
@@ -1,8 +1,5 @@
 use crate::prelude::*;
 
-pub type c_long = i64;
-pub type c_ulong = u64;
-
 pub type __int64_t = c_long;
 pub type __uint64_t = c_ulong;
 
diff --git a/src/unix/linux_like/android/b32/mod.rs b/src/unix/linux_like/android/b32/mod.rs
index 3e3485757ce98..42be94d425c72 100644
--- a/src/unix/linux_like/android/b32/mod.rs
+++ b/src/unix/linux_like/android/b32/mod.rs
@@ -3,8 +3,6 @@ use crate::prelude::*;
 // The following definitions are correct for arm and i686,
 // but may be wrong for mips
 
-pub type c_long = i32;
-pub type c_ulong = u32;
 pub type mode_t = u16;
 pub type off64_t = c_longlong;
 pub type sigset_t = c_ulong;
diff --git a/src/unix/linux_like/android/b64/mod.rs b/src/unix/linux_like/android/b64/mod.rs
index 0da702b45d18e..cc407e113f67a 100644
--- a/src/unix/linux_like/android/b64/mod.rs
+++ b/src/unix/linux_like/android/b64/mod.rs
@@ -3,8 +3,6 @@ use crate::prelude::*;
 // The following definitions are correct for aarch64 and x86_64,
 // but may be wrong for mips64
 
-pub type c_long = i64;
-pub type c_ulong = u64;
 pub type mode_t = u32;
 pub type off64_t = i64;
 pub type socklen_t = u32;
diff --git a/src/unix/linux_like/emscripten/mod.rs b/src/unix/linux_like/emscripten/mod.rs
index 07e20342fca22..953ea9efffee7 100644
--- a/src/unix/linux_like/emscripten/mod.rs
+++ b/src/unix/linux_like/emscripten/mod.rs
@@ -27,8 +27,6 @@ pub type blksize_t = c_long;
 pub type fsblkcnt_t = u32;
 pub type fsfilcnt_t = u32;
 pub type rlim_t = u64;
-pub type c_long = i32;
-pub type c_ulong = u32;
 pub type nlink_t = u32;
 
 pub type ino64_t = crate::ino_t;
diff --git a/src/unix/linux_like/linux/gnu/b32/mod.rs b/src/unix/linux_like/linux/gnu/b32/mod.rs
index adb36cc169fef..2cdd1320bf3e3 100644
--- a/src/unix/linux_like/linux/gnu/b32/mod.rs
+++ b/src/unix/linux_like/linux/gnu/b32/mod.rs
@@ -3,8 +3,6 @@
 use crate::prelude::*;
 use crate::pthread_mutex_t;
 
-pub type c_long = i32;
-pub type c_ulong = u32;
 pub type clock_t = i32;
 
 pub type shmatt_t = c_ulong;
diff --git a/src/unix/linux_like/linux/gnu/b64/aarch64/ilp32.rs b/src/unix/linux_like/linux/gnu/b64/aarch64/ilp32.rs
index cec3b7ee28b5a..f808ff31f8cca 100644
--- a/src/unix/linux_like/linux/gnu/b64/aarch64/ilp32.rs
+++ b/src/unix/linux_like/linux/gnu/b64/aarch64/ilp32.rs
@@ -1,8 +1,6 @@
+use crate::prelude::*;
 use crate::pthread_mutex_t;
 
-pub type c_long = i32;
-pub type c_ulong = u32;
-
 pub const __SIZEOF_PTHREAD_CONDATTR_T: usize = 4;
 pub const __SIZEOF_PTHREAD_MUTEX_T: usize = 32;
 pub const __SIZEOF_PTHREAD_MUTEXATTR_T: usize = 4;
diff --git a/src/unix/linux_like/linux/gnu/b64/aarch64/lp64.rs b/src/unix/linux_like/linux/gnu/b64/aarch64/lp64.rs
index 4b09e476d370c..960e5127806b3 100644
--- a/src/unix/linux_like/linux/gnu/b64/aarch64/lp64.rs
+++ b/src/unix/linux_like/linux/gnu/b64/aarch64/lp64.rs
@@ -1,8 +1,6 @@
+use crate::prelude::*;
 use crate::pthread_mutex_t;
 
-pub type c_long = i64;
-pub type c_ulong = u64;
-
 pub const __SIZEOF_PTHREAD_CONDATTR_T: usize = 8;
 pub const __SIZEOF_PTHREAD_MUTEX_T: usize = 48;
 pub const __SIZEOF_PTHREAD_MUTEXATTR_T: usize = 8;
diff --git a/src/unix/linux_like/linux/gnu/b64/loongarch64/mod.rs b/src/unix/linux_like/linux/gnu/b64/loongarch64/mod.rs
index e8f045ba5f83b..6162565da17ca 100644
--- a/src/unix/linux_like/linux/gnu/b64/loongarch64/mod.rs
+++ b/src/unix/linux_like/linux/gnu/b64/loongarch64/mod.rs
@@ -1,8 +1,6 @@
 use crate::prelude::*;
 use crate::{off64_t, off_t, pthread_mutex_t};
 
-pub type c_long = i64;
-pub type c_ulong = u64;
 pub type wchar_t = i32;
 
 pub type blksize_t = i32;
diff --git a/src/unix/linux_like/linux/gnu/b64/mips64/mod.rs b/src/unix/linux_like/linux/gnu/b64/mips64/mod.rs
index 1d13bdb945d6e..375ea40cb6a1d 100644
--- a/src/unix/linux_like/linux/gnu/b64/mips64/mod.rs
+++ b/src/unix/linux_like/linux/gnu/b64/mips64/mod.rs
@@ -2,8 +2,6 @@ use crate::prelude::*;
 use crate::{off64_t, off_t, pthread_mutex_t};
 
 pub type blksize_t = i64;
-pub type c_long = i64;
-pub type c_ulong = u64;
 pub type nlink_t = u64;
 pub type suseconds_t = i64;
 pub type wchar_t = i32;
diff --git a/src/unix/linux_like/linux/gnu/b64/powerpc64/mod.rs b/src/unix/linux_like/linux/gnu/b64/powerpc64/mod.rs
index 3eda86440d40c..e537dbcd0a86a 100644
--- a/src/unix/linux_like/linux/gnu/b64/powerpc64/mod.rs
+++ b/src/unix/linux_like/linux/gnu/b64/powerpc64/mod.rs
@@ -3,8 +3,6 @@
 use crate::prelude::*;
 use crate::{off64_t, off_t, pthread_mutex_t};
 
-pub type c_long = i64;
-pub type c_ulong = u64;
 pub type wchar_t = i32;
 pub type nlink_t = u64;
 pub type blksize_t = i64;
diff --git a/src/unix/linux_like/linux/gnu/b64/riscv64/mod.rs b/src/unix/linux_like/linux/gnu/b64/riscv64/mod.rs
index 3dd9369457353..578057ce58ed2 100644
--- a/src/unix/linux_like/linux/gnu/b64/riscv64/mod.rs
+++ b/src/unix/linux_like/linux/gnu/b64/riscv64/mod.rs
@@ -3,8 +3,6 @@
 use crate::prelude::*;
 use crate::{off64_t, off_t};
 
-pub type c_long = i64;
-pub type c_ulong = u64;
 pub type wchar_t = c_int;
 
 pub type nlink_t = c_uint;
diff --git a/src/unix/linux_like/linux/gnu/b64/s390x.rs b/src/unix/linux_like/linux/gnu/b64/s390x.rs
index 7a48de58c967b..c08e12108b918 100644
--- a/src/unix/linux_like/linux/gnu/b64/s390x.rs
+++ b/src/unix/linux_like/linux/gnu/b64/s390x.rs
@@ -4,8 +4,6 @@ use crate::prelude::*;
 use crate::{off64_t, off_t, pthread_mutex_t};
 
 pub type blksize_t = i64;
-pub type c_long = i64;
-pub type c_ulong = u64;
 pub type nlink_t = u64;
 pub type suseconds_t = i64;
 pub type wchar_t = i32;
diff --git a/src/unix/linux_like/linux/gnu/b64/sparc64/mod.rs b/src/unix/linux_like/linux/gnu/b64/sparc64/mod.rs
index 829686ff16ee5..f77606e10cbf5 100644
--- a/src/unix/linux_like/linux/gnu/b64/sparc64/mod.rs
+++ b/src/unix/linux_like/linux/gnu/b64/sparc64/mod.rs
@@ -3,8 +3,6 @@
 use crate::prelude::*;
 use crate::{off64_t, off_t, pthread_mutex_t};
 
-pub type c_long = i64;
-pub type c_ulong = u64;
 pub type wchar_t = i32;
 pub type nlink_t = u32;
 pub type blksize_t = i64;
diff --git a/src/unix/linux_like/linux/gnu/b64/x86_64/not_x32.rs b/src/unix/linux_like/linux/gnu/b64/x86_64/not_x32.rs
index eb9563e53e2c0..27b96a60aabd8 100644
--- a/src/unix/linux_like/linux/gnu/b64/x86_64/not_x32.rs
+++ b/src/unix/linux_like/linux/gnu/b64/x86_64/not_x32.rs
@@ -1,9 +1,6 @@
 use crate::prelude::*;
 use crate::pthread_mutex_t;
 
-pub type c_long = i64;
-pub type c_ulong = u64;
-
 s! {
     pub struct statvfs {
         pub f_bsize: c_ulong,
diff --git a/src/unix/linux_like/linux/gnu/b64/x86_64/x32.rs b/src/unix/linux_like/linux/gnu/b64/x86_64/x32.rs
index eafb5246c9edc..1a1cd34be035f 100644
--- a/src/unix/linux_like/linux/gnu/b64/x86_64/x32.rs
+++ b/src/unix/linux_like/linux/gnu/b64/x86_64/x32.rs
@@ -1,9 +1,6 @@
 use crate::prelude::*;
 use crate::pthread_mutex_t;
 
-pub type c_long = i32;
-pub type c_ulong = u32;
-
 s! {
     pub struct statvfs {
         pub f_bsize: c_ulong,
diff --git a/src/unix/linux_like/linux/musl/b32/mod.rs b/src/unix/linux_like/linux/musl/b32/mod.rs
index 4a62ef1906ffb..00b3d7705090f 100644
--- a/src/unix/linux_like/linux/musl/b32/mod.rs
+++ b/src/unix/linux_like/linux/musl/b32/mod.rs
@@ -1,7 +1,5 @@
 use crate::prelude::*;
 
-pub type c_long = i32;
-pub type c_ulong = u32;
 pub type nlink_t = u32;
 pub type blksize_t = c_long;
 pub type __u64 = c_ulonglong;
diff --git a/src/unix/linux_like/linux/musl/b64/mod.rs b/src/unix/linux_like/linux/musl/b64/mod.rs
index 50d862f570426..b6e7de6591809 100644
--- a/src/unix/linux_like/linux/musl/b64/mod.rs
+++ b/src/unix/linux_like/linux/musl/b64/mod.rs
@@ -1,7 +1,5 @@
 use crate::prelude::*;
 
-pub type c_long = i64;
-pub type c_ulong = u64;
 pub type regoff_t = c_long;
 
 s! {
diff --git a/src/unix/linux_like/linux/uclibc/arm/mod.rs b/src/unix/linux_like/linux/uclibc/arm/mod.rs
index c237b7e160bbf..000d9e33a734a 100644
--- a/src/unix/linux_like/linux/uclibc/arm/mod.rs
+++ b/src/unix/linux_like/linux/uclibc/arm/mod.rs
@@ -2,8 +2,6 @@ use crate::off64_t;
 use crate::prelude::*;
 
 pub type wchar_t = c_uint;
-pub type c_long = i32;
-pub type c_ulong = u32;
 pub type time_t = c_long;
 
 pub type clock_t = c_long;
diff --git a/src/unix/linux_like/linux/uclibc/mips/mips32/mod.rs b/src/unix/linux_like/linux/uclibc/mips/mips32/mod.rs
index a78daea80b62c..783b879cbf8dd 100644
--- a/src/unix/linux_like/linux/uclibc/mips/mips32/mod.rs
+++ b/src/unix/linux_like/linux/uclibc/mips/mips32/mod.rs
@@ -1,8 +1,6 @@
 use crate::off64_t;
 use crate::prelude::*;
 
-pub type c_long = i32;
-pub type c_ulong = u32;
 pub type clock_t = i32;
 pub type time_t = i32;
 pub type suseconds_t = i32;
diff --git a/src/unix/linux_like/linux/uclibc/mips/mips64/mod.rs b/src/unix/linux_like/linux/uclibc/mips/mips64/mod.rs
index d0a0f345546b6..2e60f0d03fff9 100644
--- a/src/unix/linux_like/linux/uclibc/mips/mips64/mod.rs
+++ b/src/unix/linux_like/linux/uclibc/mips/mips64/mod.rs
@@ -3,8 +3,6 @@ use crate::prelude::*;
 
 pub type blkcnt_t = i64;
 pub type blksize_t = i64;
-pub type c_long = i64;
-pub type c_ulong = u64;
 pub type fsblkcnt_t = c_ulong;
 pub type fsfilcnt_t = c_ulong;
 pub type ino_t = u64;
diff --git a/src/unix/linux_like/linux/uclibc/x86_64/mod.rs b/src/unix/linux_like/linux/uclibc/x86_64/mod.rs
index 7ede4d020d6f3..aef9f420f4659 100644
--- a/src/unix/linux_like/linux/uclibc/x86_64/mod.rs
+++ b/src/unix/linux_like/linux/uclibc/x86_64/mod.rs
@@ -6,8 +6,6 @@ use crate::prelude::*;
 pub type blkcnt_t = i64;
 pub type blksize_t = i64;
 pub type clock_t = i64;
-pub type c_long = i64;
-pub type c_ulong = u64;
 pub type fsblkcnt_t = c_ulong;
 pub type fsfilcnt_t = c_ulong;
 pub type fsword_t = c_long;
diff --git a/src/unix/mod.rs b/src/unix/mod.rs
index 84298804c594f..d303325c57008 100644
--- a/src/unix/mod.rs
+++ b/src/unix/mod.rs
@@ -5,16 +5,6 @@
 
 use crate::prelude::*;
 
-pub type c_schar = i8;
-pub type c_uchar = u8;
-pub type c_short = i16;
-pub type c_ushort = u16;
-pub type c_int = i32;
-pub type c_uint = u32;
-pub type c_float = f32;
-pub type c_double = f64;
-pub type c_longlong = i64;
-pub type c_ulonglong = u64;
 pub type intmax_t = i64;
 pub type uintmax_t = u64;
 
diff --git a/src/unix/newlib/aarch64/mod.rs b/src/unix/newlib/aarch64/mod.rs
index f0ab09443da22..e4640580e2478 100644
--- a/src/unix/newlib/aarch64/mod.rs
+++ b/src/unix/newlib/aarch64/mod.rs
@@ -3,9 +3,6 @@ use crate::prelude::*;
 pub type clock_t = c_long;
 pub type wchar_t = u32;
 
-pub type c_long = i64;
-pub type c_ulong = u64;
-
 s! {
     pub struct sockaddr {
         pub sa_len: u8,
diff --git a/src/unix/newlib/arm/mod.rs b/src/unix/newlib/arm/mod.rs
index ae89440f237db..aea4ed764b03c 100644
--- a/src/unix/newlib/arm/mod.rs
+++ b/src/unix/newlib/arm/mod.rs
@@ -3,9 +3,6 @@ use crate::prelude::*;
 pub type clock_t = c_long;
 pub type wchar_t = u32;
 
-pub type c_long = i32;
-pub type c_ulong = u32;
-
 s! {
     pub struct sockaddr {
         pub sa_family: crate::sa_family_t,
diff --git a/src/unix/newlib/espidf/mod.rs b/src/unix/newlib/espidf/mod.rs
index 0bb8e3ae9c766..57a033fcaf263 100644
--- a/src/unix/newlib/espidf/mod.rs
+++ b/src/unix/newlib/espidf/mod.rs
@@ -3,9 +3,6 @@ use crate::prelude::*;
 pub type clock_t = c_ulong;
 pub type wchar_t = u32;
 
-pub type c_long = i32;
-pub type c_ulong = u32;
-
 s! {
     pub struct cmsghdr {
         pub cmsg_len: crate::socklen_t,
diff --git a/src/unix/newlib/horizon/mod.rs b/src/unix/newlib/horizon/mod.rs
index 05a1b284e295d..e98a4c53ccfff 100644
--- a/src/unix/newlib/horizon/mod.rs
+++ b/src/unix/newlib/horizon/mod.rs
@@ -3,9 +3,6 @@
 use crate::off_t;
 use crate::prelude::*;
 
-pub type c_long = i32;
-pub type c_ulong = u32;
-
 pub type wchar_t = c_uint;
 
 pub type u_register_t = c_uint;
diff --git a/src/unix/newlib/powerpc/mod.rs b/src/unix/newlib/powerpc/mod.rs
index b53c832a71aed..c4d4a2ed07c5e 100644
--- a/src/unix/newlib/powerpc/mod.rs
+++ b/src/unix/newlib/powerpc/mod.rs
@@ -3,9 +3,6 @@ use crate::prelude::*;
 pub type clock_t = c_ulong;
 pub type wchar_t = c_int;
 
-pub type c_long = i32;
-pub type c_ulong = u32;
-
 pub use crate::unix::newlib::generic::{dirent, sigset_t, stat};
 
 // the newlib shipped with devkitPPC does not support the following components:
diff --git a/src/unix/newlib/vita/mod.rs b/src/unix/newlib/vita/mod.rs
index 1f531cb4d35ff..822b61989d479 100644
--- a/src/unix/newlib/vita/mod.rs
+++ b/src/unix/newlib/vita/mod.rs
@@ -5,9 +5,6 @@ pub type clock_t = c_long;
 
 pub type wchar_t = u32;
 
-pub type c_long = i32;
-pub type c_ulong = u32;
-
 pub type sigset_t = c_ulong;
 
 s! {
diff --git a/src/unix/nto/aarch64.rs b/src/unix/nto/aarch64.rs
index acc36bbf75363..559ab6e49a45d 100644
--- a/src/unix/nto/aarch64.rs
+++ b/src/unix/nto/aarch64.rs
@@ -1,8 +1,6 @@
 use crate::prelude::*;
 
 pub type wchar_t = u32;
-pub type c_long = i64;
-pub type c_ulong = u64;
 pub type time_t = i64;
 
 s! {
diff --git a/src/unix/nto/x86_64.rs b/src/unix/nto/x86_64.rs
index 6cd24e187c443..521b5d4ab7879 100644
--- a/src/unix/nto/x86_64.rs
+++ b/src/unix/nto/x86_64.rs
@@ -1,8 +1,6 @@
 use crate::prelude::*;
 
 pub type wchar_t = u32;
-pub type c_long = i64;
-pub type c_ulong = u64;
 pub type time_t = i64;
 
 s! {
diff --git a/src/unix/nuttx/mod.rs b/src/unix/nuttx/mod.rs
index 0f19cc75e6350..8446eafaf19e6 100644
--- a/src/unix/nuttx/mod.rs
+++ b/src/unix/nuttx/mod.rs
@@ -5,8 +5,6 @@ pub type nlink_t = u16;
 pub type ino_t = u16;
 pub type blkcnt_t = u64;
 pub type blksize_t = i16;
-pub type c_long = isize;
-pub type c_ulong = usize;
 pub type cc_t = u8;
 pub type clock_t = i64;
 pub type dev_t = i32;
diff --git a/src/unix/redox/mod.rs b/src/unix/redox/mod.rs
index 059264c01ffcb..42d97b42c14f3 100644
--- a/src/unix/redox/mod.rs
+++ b/src/unix/redox/mod.rs
@@ -2,20 +2,6 @@ use crate::prelude::*;
 
 pub type wchar_t = i32;
 
-cfg_if! {
-    if #[cfg(target_pointer_width = "32")] {
-        pub type c_long = i32;
-        pub type c_ulong = u32;
-    }
-}
-
-cfg_if! {
-    if #[cfg(target_pointer_width = "64")] {
-        pub type c_long = i64;
-        pub type c_ulong = u64;
-    }
-}
-
 pub type blkcnt_t = c_ulong;
 pub type blksize_t = c_long;
 pub type clock_t = c_long;
diff --git a/src/unix/solarish/mod.rs b/src/unix/solarish/mod.rs
index 228ba04b84455..fd04320001923 100644
--- a/src/unix/solarish/mod.rs
+++ b/src/unix/solarish/mod.rs
@@ -2,8 +2,6 @@ use core::mem::size_of;
 
 use crate::prelude::*;
 
-pub type c_long = i64;
-pub type c_ulong = u64;
 pub type caddr_t = *mut c_char;
 
 pub type clockid_t = c_int;
diff --git a/src/vxworks/aarch64.rs b/src/vxworks/aarch64.rs
index 630c7db54b55b..376783c8234ba 100644
--- a/src/vxworks/aarch64.rs
+++ b/src/vxworks/aarch64.rs
@@ -1,3 +1 @@
 pub type wchar_t = u32;
-pub type c_long = i64;
-pub type c_ulong = u64;
diff --git a/src/vxworks/arm.rs b/src/vxworks/arm.rs
index 01fc7262f03e2..376783c8234ba 100644
--- a/src/vxworks/arm.rs
+++ b/src/vxworks/arm.rs
@@ -1,3 +1 @@
 pub type wchar_t = u32;
-pub type c_long = i32;
-pub type c_ulong = u32;
diff --git a/src/vxworks/mod.rs b/src/vxworks/mod.rs
index 8d8b76b662568..7649f3dacbb64 100644
--- a/src/vxworks/mod.rs
+++ b/src/vxworks/mod.rs
@@ -14,16 +14,6 @@ impl Clone for DIR {
     }
 }
 
-pub type c_schar = i8;
-pub type c_uchar = u8;
-pub type c_short = i16;
-pub type c_ushort = u16;
-pub type c_int = i32;
-pub type c_uint = u32;
-pub type c_float = f32;
-pub type c_double = f64;
-pub type c_longlong = i64;
-pub type c_ulonglong = u64;
 pub type intmax_t = i64;
 pub type uintmax_t = u64;
 
diff --git a/src/vxworks/powerpc.rs b/src/vxworks/powerpc.rs
index 01fc7262f03e2..376783c8234ba 100644
--- a/src/vxworks/powerpc.rs
+++ b/src/vxworks/powerpc.rs
@@ -1,3 +1 @@
 pub type wchar_t = u32;
-pub type c_long = i32;
-pub type c_ulong = u32;
diff --git a/src/vxworks/powerpc64.rs b/src/vxworks/powerpc64.rs
index 630c7db54b55b..376783c8234ba 100644
--- a/src/vxworks/powerpc64.rs
+++ b/src/vxworks/powerpc64.rs
@@ -1,3 +1 @@
 pub type wchar_t = u32;
-pub type c_long = i64;
-pub type c_ulong = u64;
diff --git a/src/vxworks/riscv32.rs b/src/vxworks/riscv32.rs
index 741e312afce17..f562626f7fb2b 100644
--- a/src/vxworks/riscv32.rs
+++ b/src/vxworks/riscv32.rs
@@ -1,3 +1 @@
 pub type wchar_t = i32;
-pub type c_long = i32;
-pub type c_ulong = u32;
diff --git a/src/vxworks/riscv64.rs b/src/vxworks/riscv64.rs
index 7bacd5c5abec4..f562626f7fb2b 100644
--- a/src/vxworks/riscv64.rs
+++ b/src/vxworks/riscv64.rs
@@ -1,3 +1 @@
 pub type wchar_t = i32;
-pub type c_long = i64;
-pub type c_ulong = u64;
diff --git a/src/vxworks/x86.rs b/src/vxworks/x86.rs
index 741e312afce17..f562626f7fb2b 100644
--- a/src/vxworks/x86.rs
+++ b/src/vxworks/x86.rs
@@ -1,3 +1 @@
 pub type wchar_t = i32;
-pub type c_long = i32;
-pub type c_ulong = u32;
diff --git a/src/vxworks/x86_64.rs b/src/vxworks/x86_64.rs
index 7bacd5c5abec4..f562626f7fb2b 100644
--- a/src/vxworks/x86_64.rs
+++ b/src/vxworks/x86_64.rs
@@ -1,3 +1 @@
 pub type wchar_t = i32;
-pub type c_long = i64;
-pub type c_ulong = u64;
diff --git a/src/wasi/mod.rs b/src/wasi/mod.rs
index 750fdfb55fe5d..1a103cc85fe90 100644
--- a/src/wasi/mod.rs
+++ b/src/wasi/mod.rs
@@ -7,16 +7,6 @@ use core::iter::Iterator;
 
 use crate::prelude::*;
 
-pub type c_uchar = u8;
-pub type c_schar = i8;
-pub type c_int = i32;
-pub type c_uint = u32;
-pub type c_short = i16;
-pub type c_ushort = u16;
-pub type c_long = i32;
-pub type c_ulong = u32;
-pub type c_longlong = i64;
-pub type c_ulonglong = u64;
 pub type intmax_t = i64;
 pub type uintmax_t = u64;
 pub type size_t = usize;
@@ -28,8 +18,6 @@ pub type off_t = i64;
 pub type pid_t = i32;
 pub type clock_t = c_longlong;
 pub type time_t = c_longlong;
-pub type c_double = f64;
-pub type c_float = f32;
 pub type ino_t = u64;
 pub type sigset_t = c_uchar;
 pub type suseconds_t = c_longlong;
diff --git a/src/windows/mod.rs b/src/windows/mod.rs
index b07b5a98dc49e..9161b32ca0ce6 100644
--- a/src/windows/mod.rs
+++ b/src/windows/mod.rs
@@ -2,16 +2,6 @@
 
 use crate::prelude::*;
 
-pub type c_schar = i8;
-pub type c_uchar = u8;
-pub type c_short = i16;
-pub type c_ushort = u16;
-pub type c_int = i32;
-pub type c_uint = u32;
-pub type c_float = f32;
-pub type c_double = f64;
-pub type c_longlong = i64;
-pub type c_ulonglong = u64;
 pub type intmax_t = i64;
 pub type uintmax_t = u64;
 
@@ -22,8 +12,6 @@ pub type uintptr_t = usize;
 pub type ssize_t = isize;
 pub type sighandler_t = usize;
 
-pub type c_long = i32;
-pub type c_ulong = u32;
 pub type wchar_t = u16;
 
 pub type clock_t = i32;
diff --git a/src/xous.rs b/src/xous.rs
index 468865c8d4131..35350a723c8e9 100644
--- a/src/xous.rs
+++ b/src/xous.rs
@@ -1,15 +1,5 @@
 //! Xous C type definitions
 
-pub type c_schar = i8;
-pub type c_uchar = u8;
-pub type c_short = i16;
-pub type c_ushort = u16;
-pub type c_int = i32;
-pub type c_uint = u32;
-pub type c_float = f32;
-pub type c_double = f64;
-pub type c_longlong = i64;
-pub type c_ulonglong = u64;
 pub type intmax_t = i64;
 pub type uintmax_t = u64;
 
@@ -20,8 +10,6 @@ pub type uintptr_t = usize;
 pub type ssize_t = isize;
 
 pub type off_t = i64;
-pub type c_long = i64;
-pub type c_ulong = u64;
 pub type wchar_t = u32;
 
 pub const INT_MIN: c_int = -2147483648;