diff --git a/src/fuchsia/aarch64.rs b/src/fuchsia/aarch64.rs
index b822375100948..7a32be766dcf2 100644
--- a/src/fuchsia/aarch64.rs
+++ b/src/fuchsia/aarch64.rs
@@ -1,7 +1,7 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::off_t;
 use crate::prelude::*;
 
-pub type c_char = u8;
 pub type __u64 = c_ulonglong;
 pub type wchar_t = u32;
 pub type nlink_t = c_ulong;
diff --git a/src/fuchsia/riscv64.rs b/src/fuchsia/riscv64.rs
index bed7a926030fe..8aac5f98026d3 100644
--- a/src/fuchsia/riscv64.rs
+++ b/src/fuchsia/riscv64.rs
@@ -1,8 +1,8 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::off_t;
 use crate::prelude::*;
 
 // From psABI Calling Convention for RV64
-pub type c_char = u8;
 pub type __u64 = c_ulonglong;
 pub type wchar_t = i32;
 
diff --git a/src/fuchsia/x86_64.rs b/src/fuchsia/x86_64.rs
index b82b86adcd41e..e47d3b93e1501 100644
--- a/src/fuchsia/x86_64.rs
+++ b/src/fuchsia/x86_64.rs
@@ -1,7 +1,7 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::off_t;
 use crate::prelude::*;
 
-pub type c_char = i8;
 pub type wchar_t = i32;
 pub type nlink_t = u64;
 pub type blksize_t = c_long;
diff --git a/src/hermit.rs b/src/hermit.rs
index 2b470e78d3afe..9363fed788304 100644
--- a/src/hermit.rs
+++ b/src/hermit.rs
@@ -1,15 +1,8 @@
 //! Hermit C type definitions
 
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
-cfg_if! {
-    if #[cfg(any(target_arch = "aarch64", target_arch = "riscv64"))] {
-        pub type c_char = u8;
-    } else {
-        pub type c_char = i8;
-    }
-}
-
 pub type c_schar = i8;
 pub type c_uchar = u8;
 pub type c_short = i16;
diff --git a/src/sgx.rs b/src/sgx.rs
index e37ccd79c3a55..de1fc78c6fdd2 100644
--- a/src/sgx.rs
+++ b/src/sgx.rs
@@ -1,5 +1,7 @@
 //! SGX C types definition
 
+pub use crate::arch::c_char_def as c_char;
+
 pub type c_schar = i8;
 pub type c_uchar = u8;
 pub type c_short = i16;
@@ -19,7 +21,6 @@ pub type intptr_t = isize;
 pub type uintptr_t = usize;
 pub type ssize_t = isize;
 
-pub type c_char = i8;
 pub type c_long = i64;
 pub type c_ulong = u64;
 
diff --git a/src/solid/aarch64.rs b/src/solid/aarch64.rs
index ceabea397b804..630c7db54b55b 100644
--- a/src/solid/aarch64.rs
+++ b/src/solid/aarch64.rs
@@ -1,4 +1,3 @@
-pub type c_char = i8;
 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 04cc1542deaeb..01fc7262f03e2 100644
--- a/src/solid/arm.rs
+++ b/src/solid/arm.rs
@@ -1,4 +1,3 @@
-pub type c_char = i8;
 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..0745cb874b14c 100644
--- a/src/solid/mod.rs
+++ b/src/solid/mod.rs
@@ -2,6 +2,7 @@
 //!
 //! [SOLID]: https://solid.kmckk.com/
 
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
 pub type c_schar = i8;
diff --git a/src/switch.rs b/src/switch.rs
index 4a8b16e15f568..8a92cad681dde 100644
--- a/src/switch.rs
+++ b/src/switch.rs
@@ -1,5 +1,7 @@
 //! Switch C type definitions
 
+pub use crate::arch::c_char_def as c_char;
+
 pub type c_schar = i8;
 pub type c_uchar = u8;
 pub type c_short = i16;
@@ -20,7 +22,6 @@ pub type uintptr_t = usize;
 pub type ssize_t = isize;
 
 pub type off_t = i64;
-pub type c_char = u8;
 pub type c_long = i64;
 pub type c_ulong = u64;
 pub type wchar_t = u32;
diff --git a/src/teeos/mod.rs b/src/teeos/mod.rs
index 40bc0c0549a08..4e554a93452a2 100644
--- a/src/teeos/mod.rs
+++ b/src/teeos/mod.rs
@@ -5,6 +5,7 @@
 #![allow(non_camel_case_types)]
 #![allow(non_snake_case)]
 
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
 pub type c_schar = i8;
@@ -45,9 +46,6 @@ pub type ssize_t = isize;
 
 pub type pid_t = c_int;
 
-// aarch64 specific
-pub type c_char = u8;
-
 pub type wchar_t = u32;
 
 pub type c_long = i64;
diff --git a/src/trusty.rs b/src/trusty.rs
index 60ca11d481613..b066190ba1ac8 100644
--- a/src/trusty.rs
+++ b/src/trusty.rs
@@ -1,18 +1,12 @@
 use crate::prelude::*;
 
+pub use crate::arch::c_char_def as c_char;
+
 pub type size_t = usize;
 pub type ssize_t = isize;
 
 pub type off_t = i64;
 
-cfg_if! {
-    if #[cfg(any(target_arch = "aarch64", target_arch = "arm"))] {
-        pub type c_char = u8;
-    } else if #[cfg(target_arch = "x86_64")] {
-        pub type c_char = i8;
-    }
-}
-
 pub type c_schar = i8;
 pub type c_uchar = u8;
 pub type c_short = i16;
diff --git a/src/unix/aix/mod.rs b/src/unix/aix/mod.rs
index ca94debe88652..d6bd4c6cd6a7b 100644
--- a/src/unix/aix/mod.rs
+++ b/src/unix/aix/mod.rs
@@ -1,6 +1,6 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
-pub type c_char = u8;
 pub type caddr_t = *mut c_char;
 pub type clockid_t = c_longlong;
 pub type blkcnt_t = c_long;
diff --git a/src/unix/bsd/apple/mod.rs b/src/unix/bsd/apple/mod.rs
index 7cce58e5d6db3..d2b0694b60a35 100644
--- a/src/unix/bsd/apple/mod.rs
+++ b/src/unix/bsd/apple/mod.rs
@@ -2,10 +2,10 @@
 //!
 //! This covers *-apple-* triples currently
 
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 use crate::{cmsghdr, off_t};
 
-pub type c_char = i8;
 pub type wchar_t = i32;
 pub type clock_t = c_ulong;
 pub type time_t = c_long;
diff --git a/src/unix/bsd/freebsdlike/dragonfly/mod.rs b/src/unix/bsd/freebsdlike/dragonfly/mod.rs
index d12cd12885b11..fb78cadfb222b 100644
--- a/src/unix/bsd/freebsdlike/dragonfly/mod.rs
+++ b/src/unix/bsd/freebsdlike/dragonfly/mod.rs
@@ -1,8 +1,8 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 use crate::{cmsghdr, off_t};
 
 pub type dev_t = u32;
-pub type c_char = i8;
 pub type wchar_t = i32;
 pub type clock_t = u64;
 pub type ino_t = u64;
diff --git a/src/unix/bsd/freebsdlike/freebsd/aarch64.rs b/src/unix/bsd/freebsdlike/freebsd/aarch64.rs
index 81d3eb351cdb6..96db5f81f9484 100644
--- a/src/unix/bsd/freebsdlike/freebsd/aarch64.rs
+++ b/src/unix/bsd/freebsdlike/freebsd/aarch64.rs
@@ -1,6 +1,6 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
-pub type c_char = u8;
 pub type c_long = i64;
 pub type c_ulong = u64;
 pub type clock_t = i32;
diff --git a/src/unix/bsd/freebsdlike/freebsd/arm.rs b/src/unix/bsd/freebsdlike/freebsd/arm.rs
index 07492c9333d75..f59320a7f90ac 100644
--- a/src/unix/bsd/freebsdlike/freebsd/arm.rs
+++ b/src/unix/bsd/freebsdlike/freebsd/arm.rs
@@ -1,6 +1,6 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
-pub type c_char = u8;
 pub type c_long = i32;
 pub type c_ulong = u32;
 pub type clock_t = u32;
diff --git a/src/unix/bsd/freebsdlike/freebsd/powerpc.rs b/src/unix/bsd/freebsdlike/freebsd/powerpc.rs
index 0bd678c9821b6..3bb52ea2c2787 100644
--- a/src/unix/bsd/freebsdlike/freebsd/powerpc.rs
+++ b/src/unix/bsd/freebsdlike/freebsd/powerpc.rs
@@ -1,6 +1,6 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
-pub type c_char = u8;
 pub type c_long = i32;
 pub type c_ulong = u32;
 pub type clock_t = u32;
diff --git a/src/unix/bsd/freebsdlike/freebsd/powerpc64.rs b/src/unix/bsd/freebsdlike/freebsd/powerpc64.rs
index e1548a2fa4a09..bb84505b0376c 100644
--- a/src/unix/bsd/freebsdlike/freebsd/powerpc64.rs
+++ b/src/unix/bsd/freebsdlike/freebsd/powerpc64.rs
@@ -1,6 +1,6 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
-pub type c_char = u8;
 pub type c_long = i64;
 pub type c_ulong = u64;
 pub type clock_t = u32;
diff --git a/src/unix/bsd/freebsdlike/freebsd/riscv64.rs b/src/unix/bsd/freebsdlike/freebsd/riscv64.rs
index e425411436d2b..ef47abe424464 100644
--- a/src/unix/bsd/freebsdlike/freebsd/riscv64.rs
+++ b/src/unix/bsd/freebsdlike/freebsd/riscv64.rs
@@ -1,6 +1,6 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
-pub type c_char = u8;
 pub type c_long = i64;
 pub type c_ulong = u64;
 pub type clock_t = i32;
diff --git a/src/unix/bsd/freebsdlike/freebsd/x86.rs b/src/unix/bsd/freebsdlike/freebsd/x86.rs
index 26a27214875e4..37cd8cd4fd400 100644
--- a/src/unix/bsd/freebsdlike/freebsd/x86.rs
+++ b/src/unix/bsd/freebsdlike/freebsd/x86.rs
@@ -1,6 +1,6 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
-pub type c_char = i8;
 pub type c_long = i32;
 pub type c_ulong = u32;
 pub type clock_t = c_ulong;
diff --git a/src/unix/bsd/freebsdlike/freebsd/x86_64/mod.rs b/src/unix/bsd/freebsdlike/freebsd/x86_64/mod.rs
index fca9a126f81c1..f219d420a99bf 100644
--- a/src/unix/bsd/freebsdlike/freebsd/x86_64/mod.rs
+++ b/src/unix/bsd/freebsdlike/freebsd/x86_64/mod.rs
@@ -1,6 +1,6 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
-pub type c_char = i8;
 pub type c_long = i64;
 pub type c_ulong = u64;
 pub type clock_t = i32;
diff --git a/src/unix/bsd/netbsdlike/netbsd/aarch64.rs b/src/unix/bsd/netbsdlike/netbsd/aarch64.rs
index 2391801fe458b..d3f3f947798ef 100644
--- a/src/unix/bsd/netbsdlike/netbsd/aarch64.rs
+++ b/src/unix/bsd/netbsdlike/netbsd/aarch64.rs
@@ -1,9 +1,9 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 use crate::PT_FIRSTMACH;
 
 pub type c_long = i64;
 pub type c_ulong = u64;
-pub type c_char = u8;
 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 1f54c8135bf47..2dbe34370b6b8 100644
--- a/src/unix/bsd/netbsdlike/netbsd/arm.rs
+++ b/src/unix/bsd/netbsdlike/netbsd/arm.rs
@@ -1,9 +1,9 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 use crate::PT_FIRSTMACH;
 
 pub type c_long = i32;
 pub type c_ulong = u32;
-pub type c_char = u8;
 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 7129c0f54eb6f..dc9c64ca9a826 100644
--- a/src/unix/bsd/netbsdlike/netbsd/mips.rs
+++ b/src/unix/bsd/netbsdlike/netbsd/mips.rs
@@ -1,9 +1,9 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 use crate::PT_FIRSTMACH;
 
 pub type c_long = i32;
 pub type c_ulong = u32;
-pub type c_char = i8;
 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 a086396ed610a..90ca256155c46 100644
--- a/src/unix/bsd/netbsdlike/netbsd/powerpc.rs
+++ b/src/unix/bsd/netbsdlike/netbsd/powerpc.rs
@@ -1,9 +1,9 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 use crate::PT_FIRSTMACH;
 
 pub type c_long = i32;
 pub type c_ulong = u32;
-pub type c_char = u8;
 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 68cd264aadb78..de3ca17734ac8 100644
--- a/src/unix/bsd/netbsdlike/netbsd/riscv64.rs
+++ b/src/unix/bsd/netbsdlike/netbsd/riscv64.rs
@@ -1,10 +1,10 @@
 use PT_FIRSTMACH;
 
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
 pub type c_long = i64;
 pub type c_ulong = u64;
-pub type c_char = u8;
 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 d564f58a3e688..c4e35c583e020 100644
--- a/src/unix/bsd/netbsdlike/netbsd/sparc64.rs
+++ b/src/unix/bsd/netbsdlike/netbsd/sparc64.rs
@@ -1,8 +1,8 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
 pub type c_long = i64;
 pub type c_ulong = u64;
-pub type c_char = i8;
 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 3c55792defcbd..e366a32d035b0 100644
--- a/src/unix/bsd/netbsdlike/netbsd/x86.rs
+++ b/src/unix/bsd/netbsdlike/netbsd/x86.rs
@@ -1,8 +1,8 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
 pub type c_long = i32;
 pub type c_ulong = u32;
-pub type c_char = i8;
 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 f968e36d67aa2..b84cc7005b65c 100644
--- a/src/unix/bsd/netbsdlike/netbsd/x86_64.rs
+++ b/src/unix/bsd/netbsdlike/netbsd/x86_64.rs
@@ -1,9 +1,9 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 use crate::PT_FIRSTMACH;
 
 pub type c_long = i64;
 pub type c_ulong = u64;
-pub type c_char = i8;
 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 bf704757c59d6..ffedae7216736 100644
--- a/src/unix/bsd/netbsdlike/openbsd/aarch64.rs
+++ b/src/unix/bsd/netbsdlike/openbsd/aarch64.rs
@@ -1,8 +1,8 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
 pub type c_long = i64;
 pub type c_ulong = u64;
-pub type c_char = u8;
 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 1e66ed247a2eb..eb0d03928f5ff 100644
--- a/src/unix/bsd/netbsdlike/openbsd/arm.rs
+++ b/src/unix/bsd/netbsdlike/openbsd/arm.rs
@@ -1,8 +1,8 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
 pub type c_long = i32;
 pub type c_ulong = u32;
-pub type c_char = u8;
 
 pub(crate) const _ALIGNBYTES: usize = mem::size_of::<c_double>() - 1;
 
diff --git a/src/unix/bsd/netbsdlike/openbsd/mips64.rs b/src/unix/bsd/netbsdlike/openbsd/mips64.rs
index 15803ced09a08..48704d46cac1b 100644
--- a/src/unix/bsd/netbsdlike/openbsd/mips64.rs
+++ b/src/unix/bsd/netbsdlike/openbsd/mips64.rs
@@ -1,6 +1,7 @@
+pub use crate::arch::c_char_def as c_char;
+
 pub type c_long = i64;
 pub type c_ulong = u64;
-pub type c_char = i8;
 
 #[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 1e66ed247a2eb..eb0d03928f5ff 100644
--- a/src/unix/bsd/netbsdlike/openbsd/powerpc.rs
+++ b/src/unix/bsd/netbsdlike/openbsd/powerpc.rs
@@ -1,8 +1,8 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
 pub type c_long = i32;
 pub type c_ulong = u32;
-pub type c_char = u8;
 
 pub(crate) const _ALIGNBYTES: usize = mem::size_of::<c_double>() - 1;
 
diff --git a/src/unix/bsd/netbsdlike/openbsd/powerpc64.rs b/src/unix/bsd/netbsdlike/openbsd/powerpc64.rs
index cb808719fb8ea..0888e7e3789fb 100644
--- a/src/unix/bsd/netbsdlike/openbsd/powerpc64.rs
+++ b/src/unix/bsd/netbsdlike/openbsd/powerpc64.rs
@@ -1,8 +1,8 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
 pub type c_long = i64;
 pub type c_ulong = u64;
-pub type c_char = u8;
 
 pub(crate) const _ALIGNBYTES: usize = mem::size_of::<c_long>() - 1;
 
diff --git a/src/unix/bsd/netbsdlike/openbsd/riscv64.rs b/src/unix/bsd/netbsdlike/openbsd/riscv64.rs
index 6a39f3494dd14..040c0034de923 100644
--- a/src/unix/bsd/netbsdlike/openbsd/riscv64.rs
+++ b/src/unix/bsd/netbsdlike/openbsd/riscv64.rs
@@ -1,8 +1,8 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
 pub type c_long = i64;
 pub type c_ulong = u64;
-pub type c_char = u8;
 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 070fc9385f6c9..fca4b4fc3f772 100644
--- a/src/unix/bsd/netbsdlike/openbsd/sparc64.rs
+++ b/src/unix/bsd/netbsdlike/openbsd/sparc64.rs
@@ -1,6 +1,7 @@
+pub use crate::arch::c_char_def as c_char;
+
 pub type c_long = i64;
 pub type c_ulong = u64;
-pub type c_char = i8;
 
 #[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 4b495d0c16de8..bf168447c801c 100644
--- a/src/unix/bsd/netbsdlike/openbsd/x86.rs
+++ b/src/unix/bsd/netbsdlike/openbsd/x86.rs
@@ -1,8 +1,8 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
 pub type c_long = i32;
 pub type c_ulong = u32;
-pub type c_char = i8;
 
 pub(crate) const _ALIGNBYTES: usize = mem::size_of::<c_int>() - 1;
 
diff --git a/src/unix/bsd/netbsdlike/openbsd/x86_64.rs b/src/unix/bsd/netbsdlike/openbsd/x86_64.rs
index 4380c1d118922..0f0fab5e890eb 100644
--- a/src/unix/bsd/netbsdlike/openbsd/x86_64.rs
+++ b/src/unix/bsd/netbsdlike/openbsd/x86_64.rs
@@ -1,9 +1,9 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 use crate::PT_FIRSTMACH;
 
 pub type c_long = i64;
 pub type c_ulong = u64;
-pub type c_char = i8;
 pub type ucontext_t = sigcontext;
 
 s! {
diff --git a/src/unix/haiku/mod.rs b/src/unix/haiku/mod.rs
index e63a432811990..7aa14e69298e2 100644
--- a/src/unix/haiku/mod.rs
+++ b/src/unix/haiku/mod.rs
@@ -1,3 +1,4 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
 pub type rlim_t = crate::uintptr_t;
@@ -6,7 +7,6 @@ pub type pthread_key_t = c_int;
 pub type nfds_t = c_ulong;
 pub type tcflag_t = c_uint;
 pub type speed_t = c_uchar;
-pub type c_char = i8;
 pub type clock_t = i32;
 pub type clockid_t = i32;
 pub type suseconds_t = i32;
diff --git a/src/unix/hurd/mod.rs b/src/unix/hurd/mod.rs
index 78955110dde45..e7d1b9a6cefb0 100644
--- a/src/unix/hurd/mod.rs
+++ b/src/unix/hurd/mod.rs
@@ -1,11 +1,10 @@
 #![allow(dead_code)]
 
+pub use crate::arch::c_char_def as c_char;
 use crate::c_schar;
 use crate::prelude::*;
 
 // types
-pub type c_char = i8;
-
 pub type __s16_type = c_short;
 pub type __u16_type = c_ushort;
 pub type __s32_type = c_int;
diff --git a/src/unix/linux_like/android/b32/arm.rs b/src/unix/linux_like/android/b32/arm.rs
index 0bf4087fde751..b01f8a390cb20 100644
--- a/src/unix/linux_like/android/b32/arm.rs
+++ b/src/unix/linux_like/android/b32/arm.rs
@@ -1,6 +1,6 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
-pub type c_char = u8;
 pub type wchar_t = u32;
 pub type greg_t = i32;
 pub type mcontext_t = sigcontext;
diff --git a/src/unix/linux_like/android/b32/x86/mod.rs b/src/unix/linux_like/android/b32/x86/mod.rs
index 9f80d8a71f449..56a7129a0f3b3 100644
--- a/src/unix/linux_like/android/b32/x86/mod.rs
+++ b/src/unix/linux_like/android/b32/x86/mod.rs
@@ -1,6 +1,6 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
-pub type c_char = i8;
 pub type wchar_t = i32;
 pub type greg_t = i32;
 
diff --git a/src/unix/linux_like/android/b64/aarch64/mod.rs b/src/unix/linux_like/android/b64/aarch64/mod.rs
index 39d8bc07c4dd5..b902c4b8739a9 100644
--- a/src/unix/linux_like/android/b64/aarch64/mod.rs
+++ b/src/unix/linux_like/android/b64/aarch64/mod.rs
@@ -1,7 +1,7 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::off64_t;
 use crate::prelude::*;
 
-pub type c_char = u8;
 pub type wchar_t = u32;
 pub type __u64 = c_ulonglong;
 pub type __s64 = c_longlong;
diff --git a/src/unix/linux_like/android/b64/riscv64/mod.rs b/src/unix/linux_like/android/b64/riscv64/mod.rs
index f214fe33702a4..b60ffb9701ac3 100644
--- a/src/unix/linux_like/android/b64/riscv64/mod.rs
+++ b/src/unix/linux_like/android/b64/riscv64/mod.rs
@@ -1,7 +1,7 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::off64_t;
 use crate::prelude::*;
 
-pub type c_char = i8;
 pub type wchar_t = u32;
 pub type greg_t = i64;
 pub type __u64 = c_ulonglong;
diff --git a/src/unix/linux_like/android/b64/x86_64/mod.rs b/src/unix/linux_like/android/b64/x86_64/mod.rs
index 4da5cd4995679..1eebd17e3f533 100644
--- a/src/unix/linux_like/android/b64/x86_64/mod.rs
+++ b/src/unix/linux_like/android/b64/x86_64/mod.rs
@@ -1,7 +1,7 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::off64_t;
 use crate::prelude::*;
 
-pub type c_char = i8;
 pub type wchar_t = i32;
 pub type greg_t = i64;
 pub type __u64 = c_ulonglong;
diff --git a/src/unix/linux_like/emscripten/mod.rs b/src/unix/linux_like/emscripten/mod.rs
index ef788152a031b..468c4d0d5161d 100644
--- a/src/unix/linux_like/emscripten/mod.rs
+++ b/src/unix/linux_like/emscripten/mod.rs
@@ -1,6 +1,6 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
-pub type c_char = i8;
 pub type wchar_t = i32;
 pub type useconds_t = u32;
 pub type dev_t = u32;
diff --git a/src/unix/linux_like/linux/gnu/b32/arm/mod.rs b/src/unix/linux_like/linux/gnu/b32/arm/mod.rs
index f3869723996cb..4aad8ab752cab 100644
--- a/src/unix/linux_like/linux/gnu/b32/arm/mod.rs
+++ b/src/unix/linux_like/linux/gnu/b32/arm/mod.rs
@@ -1,7 +1,7 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 use crate::{off64_t, off_t};
 
-pub type c_char = u8;
 pub type wchar_t = u32;
 
 s! {
diff --git a/src/unix/linux_like/linux/gnu/b32/csky/mod.rs b/src/unix/linux_like/linux/gnu/b32/csky/mod.rs
index eb6f70d8fed07..c280571bc2ef6 100644
--- a/src/unix/linux_like/linux/gnu/b32/csky/mod.rs
+++ b/src/unix/linux_like/linux/gnu/b32/csky/mod.rs
@@ -1,7 +1,7 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 use crate::{off64_t, off_t};
 
-pub type c_char = u8;
 pub type wchar_t = u32;
 
 s! {
diff --git a/src/unix/linux_like/linux/gnu/b32/m68k/mod.rs b/src/unix/linux_like/linux/gnu/b32/m68k/mod.rs
index 3d252c6253035..bd5270f5b4b3f 100644
--- a/src/unix/linux_like/linux/gnu/b32/m68k/mod.rs
+++ b/src/unix/linux_like/linux/gnu/b32/m68k/mod.rs
@@ -1,7 +1,7 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 use crate::{off64_t, off_t};
 
-pub type c_char = i8;
 pub type wchar_t = i32;
 
 s! {
diff --git a/src/unix/linux_like/linux/gnu/b32/mips/mod.rs b/src/unix/linux_like/linux/gnu/b32/mips/mod.rs
index 73da7739dabf5..27a1c5ad36a93 100644
--- a/src/unix/linux_like/linux/gnu/b32/mips/mod.rs
+++ b/src/unix/linux_like/linux/gnu/b32/mips/mod.rs
@@ -1,7 +1,7 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 use crate::{off64_t, off_t};
 
-pub type c_char = i8;
 pub type wchar_t = i32;
 
 s! {
diff --git a/src/unix/linux_like/linux/gnu/b32/powerpc.rs b/src/unix/linux_like/linux/gnu/b32/powerpc.rs
index 75ec2385a1230..fefa4cd4843d1 100644
--- a/src/unix/linux_like/linux/gnu/b32/powerpc.rs
+++ b/src/unix/linux_like/linux/gnu/b32/powerpc.rs
@@ -1,7 +1,7 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 use crate::{off64_t, off_t};
 
-pub type c_char = u8;
 pub type wchar_t = i32;
 
 s! {
diff --git a/src/unix/linux_like/linux/gnu/b32/riscv32/mod.rs b/src/unix/linux_like/linux/gnu/b32/riscv32/mod.rs
index 43547cc7ad868..c65139a446256 100644
--- a/src/unix/linux_like/linux/gnu/b32/riscv32/mod.rs
+++ b/src/unix/linux_like/linux/gnu/b32/riscv32/mod.rs
@@ -1,9 +1,9 @@
 //! RISC-V-specific definitions for 32-bit linux-like values
 
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 use crate::{off64_t, off_t};
 
-pub type c_char = u8;
 pub type wchar_t = c_int;
 
 s! {
diff --git a/src/unix/linux_like/linux/gnu/b32/sparc/mod.rs b/src/unix/linux_like/linux/gnu/b32/sparc/mod.rs
index cfe62018f5fdd..044c36e1f2bf6 100644
--- a/src/unix/linux_like/linux/gnu/b32/sparc/mod.rs
+++ b/src/unix/linux_like/linux/gnu/b32/sparc/mod.rs
@@ -1,9 +1,9 @@
 //! SPARC-specific definitions for 32-bit linux-like values
 
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 use crate::{off64_t, off_t};
 
-pub type c_char = i8;
 pub type wchar_t = i32;
 
 s! {
diff --git a/src/unix/linux_like/linux/gnu/b32/x86/mod.rs b/src/unix/linux_like/linux/gnu/b32/x86/mod.rs
index d626236dda792..8feb4a2366516 100644
--- a/src/unix/linux_like/linux/gnu/b32/x86/mod.rs
+++ b/src/unix/linux_like/linux/gnu/b32/x86/mod.rs
@@ -1,7 +1,7 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 use crate::{off64_t, off_t};
 
-pub type c_char = i8;
 pub type wchar_t = i32;
 pub type greg_t = i32;
 
diff --git a/src/unix/linux_like/linux/gnu/b64/aarch64/mod.rs b/src/unix/linux_like/linux/gnu/b64/aarch64/mod.rs
index 27ba5263c5361..50bc6de53a04d 100644
--- a/src/unix/linux_like/linux/gnu/b64/aarch64/mod.rs
+++ b/src/unix/linux_like/linux/gnu/b64/aarch64/mod.rs
@@ -1,9 +1,9 @@
 //! AArch64-specific definitions for 64-bit linux-like values
 
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 use crate::{off64_t, off_t};
 
-pub type c_char = u8;
 pub type wchar_t = u32;
 pub type nlink_t = u32;
 pub type blksize_t = i32;
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 8c05659dc09a7..86352f487d414 100644
--- a/src/unix/linux_like/linux/gnu/b64/loongarch64/mod.rs
+++ b/src/unix/linux_like/linux/gnu/b64/loongarch64/mod.rs
@@ -1,7 +1,7 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 use crate::{off64_t, off_t, pthread_mutex_t};
 
-pub type c_char = i8;
 pub type c_long = i64;
 pub type c_ulong = u64;
 pub type wchar_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 2d85df1385a10..08fbae5c6d683 100644
--- a/src/unix/linux_like/linux/gnu/b64/mips64/mod.rs
+++ b/src/unix/linux_like/linux/gnu/b64/mips64/mod.rs
@@ -1,8 +1,8 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 use crate::{off64_t, off_t, pthread_mutex_t};
 
 pub type blksize_t = i64;
-pub type c_char = i8;
 pub type c_long = i64;
 pub type c_ulong = u64;
 pub type nlink_t = u64;
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 86d047dbf3878..f105c259715e8 100644
--- a/src/unix/linux_like/linux/gnu/b64/powerpc64/mod.rs
+++ b/src/unix/linux_like/linux/gnu/b64/powerpc64/mod.rs
@@ -1,11 +1,11 @@
 //! PowerPC64-specific definitions for 64-bit linux-like values
 
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 use crate::{off64_t, off_t, pthread_mutex_t};
 
 pub type c_long = i64;
 pub type c_ulong = u64;
-pub type c_char = u8;
 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 db8deafe896be..1930dc736d12f 100644
--- a/src/unix/linux_like/linux/gnu/b64/riscv64/mod.rs
+++ b/src/unix/linux_like/linux/gnu/b64/riscv64/mod.rs
@@ -1,9 +1,9 @@
 //! RISC-V-specific definitions for 64-bit linux-like values
 
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 use crate::{off64_t, off_t};
 
-pub type c_char = u8;
 pub type c_long = i64;
 pub type c_ulong = u64;
 pub type wchar_t = c_int;
diff --git a/src/unix/linux_like/linux/gnu/b64/s390x.rs b/src/unix/linux_like/linux/gnu/b64/s390x.rs
index 95dacc9f91cbd..655d13d688ef1 100644
--- a/src/unix/linux_like/linux/gnu/b64/s390x.rs
+++ b/src/unix/linux_like/linux/gnu/b64/s390x.rs
@@ -1,10 +1,10 @@
 //! s390x
 
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 use crate::{off64_t, off_t, pthread_mutex_t};
 
 pub type blksize_t = i64;
-pub type c_char = u8;
 pub type c_long = i64;
 pub type c_ulong = u64;
 pub type nlink_t = u64;
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 5626cd3e46933..f7588180498b6 100644
--- a/src/unix/linux_like/linux/gnu/b64/sparc64/mod.rs
+++ b/src/unix/linux_like/linux/gnu/b64/sparc64/mod.rs
@@ -1,11 +1,11 @@
 //! SPARC64-specific definitions for 64-bit linux-like values
 
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 use crate::{off64_t, off_t, pthread_mutex_t};
 
 pub type c_long = i64;
 pub type c_ulong = u64;
-pub type c_char = i8;
 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/mod.rs b/src/unix/linux_like/linux/gnu/b64/x86_64/mod.rs
index 0d9971252391b..1ff52f934dc27 100644
--- a/src/unix/linux_like/linux/gnu/b64/x86_64/mod.rs
+++ b/src/unix/linux_like/linux/gnu/b64/x86_64/mod.rs
@@ -1,9 +1,9 @@
 //! x86_64-specific definitions for 64-bit linux-like values
 
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 use crate::{off64_t, off_t};
 
-pub type c_char = i8;
 pub type wchar_t = i32;
 pub type nlink_t = u64;
 pub type blksize_t = i64;
diff --git a/src/unix/linux_like/linux/musl/b32/arm/mod.rs b/src/unix/linux_like/linux/musl/b32/arm/mod.rs
index 3116837322b60..241c71f3490ec 100644
--- a/src/unix/linux_like/linux/musl/b32/arm/mod.rs
+++ b/src/unix/linux_like/linux/musl/b32/arm/mod.rs
@@ -1,7 +1,7 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::off_t;
 use crate::prelude::*;
 
-pub type c_char = u8;
 pub type wchar_t = u32;
 
 s! {
diff --git a/src/unix/linux_like/linux/musl/b32/hexagon.rs b/src/unix/linux_like/linux/musl/b32/hexagon.rs
index 9becabd146f8d..92393d6081ad9 100644
--- a/src/unix/linux_like/linux/musl/b32/hexagon.rs
+++ b/src/unix/linux_like/linux/musl/b32/hexagon.rs
@@ -1,6 +1,6 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
-pub type c_char = u8;
 pub type wchar_t = u32;
 pub type stat64 = crate::stat;
 
diff --git a/src/unix/linux_like/linux/musl/b32/mips/mod.rs b/src/unix/linux_like/linux/musl/b32/mips/mod.rs
index aacdc44579496..ed17f8ed4b272 100644
--- a/src/unix/linux_like/linux/musl/b32/mips/mod.rs
+++ b/src/unix/linux_like/linux/musl/b32/mips/mod.rs
@@ -1,7 +1,7 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::off_t;
 use crate::prelude::*;
 
-pub type c_char = i8;
 pub type wchar_t = c_int;
 
 s! {
diff --git a/src/unix/linux_like/linux/musl/b32/powerpc.rs b/src/unix/linux_like/linux/musl/b32/powerpc.rs
index 29e797959123d..4e449717c8e8d 100644
--- a/src/unix/linux_like/linux/musl/b32/powerpc.rs
+++ b/src/unix/linux_like/linux/musl/b32/powerpc.rs
@@ -1,7 +1,7 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::off_t;
 use crate::prelude::*;
 
-pub type c_char = u8;
 pub type wchar_t = i32;
 
 s! {
diff --git a/src/unix/linux_like/linux/musl/b32/riscv32/mod.rs b/src/unix/linux_like/linux/musl/b32/riscv32/mod.rs
index ff5839c64bc42..fce4bb525683e 100644
--- a/src/unix/linux_like/linux/musl/b32/riscv32/mod.rs
+++ b/src/unix/linux_like/linux/musl/b32/riscv32/mod.rs
@@ -1,9 +1,9 @@
 //! RISC-V-specific definitions for 32-bit linux-like values
 
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 use crate::{off64_t, off_t};
 
-pub type c_char = u8;
 pub type wchar_t = c_int;
 
 s! {
diff --git a/src/unix/linux_like/linux/musl/b32/x86/mod.rs b/src/unix/linux_like/linux/musl/b32/x86/mod.rs
index 476bacdb6b88d..c47b2ccf59f18 100644
--- a/src/unix/linux_like/linux/musl/b32/x86/mod.rs
+++ b/src/unix/linux_like/linux/musl/b32/x86/mod.rs
@@ -1,7 +1,7 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::off_t;
 use crate::prelude::*;
 
-pub type c_char = i8;
 pub type wchar_t = i32;
 
 s! {
diff --git a/src/unix/linux_like/linux/musl/b64/aarch64/mod.rs b/src/unix/linux_like/linux/musl/b64/aarch64/mod.rs
index c660ec5c3453f..2971d8b52f9ea 100644
--- a/src/unix/linux_like/linux/musl/b64/aarch64/mod.rs
+++ b/src/unix/linux_like/linux/musl/b64/aarch64/mod.rs
@@ -1,7 +1,7 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::off_t;
 use crate::prelude::*;
 
-pub type c_char = u8;
 pub type __u64 = c_ulonglong;
 pub type __s64 = c_longlong;
 pub type wchar_t = u32;
diff --git a/src/unix/linux_like/linux/musl/b64/loongarch64/mod.rs b/src/unix/linux_like/linux/musl/b64/loongarch64/mod.rs
index 1be59ada9aad5..49497c588e369 100644
--- a/src/unix/linux_like/linux/musl/b64/loongarch64/mod.rs
+++ b/src/unix/linux_like/linux/musl/b64/loongarch64/mod.rs
@@ -1,9 +1,9 @@
 //! LoongArch-specific definitions for 64-bit linux-like values
 
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 use crate::{off64_t, off_t};
 
-pub type c_char = i8;
 pub type wchar_t = c_int;
 
 pub type nlink_t = c_uint;
diff --git a/src/unix/linux_like/linux/musl/b64/mips64.rs b/src/unix/linux_like/linux/musl/b64/mips64.rs
index 09191a5f8275c..f33c029e44f07 100644
--- a/src/unix/linux_like/linux/musl/b64/mips64.rs
+++ b/src/unix/linux_like/linux/musl/b64/mips64.rs
@@ -1,7 +1,7 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::off_t;
 use crate::prelude::*;
 
-pub type c_char = i8;
 pub type wchar_t = i32;
 pub type __u64 = c_ulong;
 pub type __s64 = c_long;
diff --git a/src/unix/linux_like/linux/musl/b64/powerpc64.rs b/src/unix/linux_like/linux/musl/b64/powerpc64.rs
index 3753293c8e0cf..cb4b6d8eac558 100644
--- a/src/unix/linux_like/linux/musl/b64/powerpc64.rs
+++ b/src/unix/linux_like/linux/musl/b64/powerpc64.rs
@@ -1,7 +1,7 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::off_t;
 use crate::prelude::*;
 
-pub type c_char = u8;
 pub type wchar_t = i32;
 pub type __u64 = c_ulong;
 pub type __s64 = c_long;
diff --git a/src/unix/linux_like/linux/musl/b64/riscv64/mod.rs b/src/unix/linux_like/linux/musl/b64/riscv64/mod.rs
index ec0ba4c1f926f..98bd8993f6316 100644
--- a/src/unix/linux_like/linux/musl/b64/riscv64/mod.rs
+++ b/src/unix/linux_like/linux/musl/b64/riscv64/mod.rs
@@ -1,9 +1,9 @@
 //! RISC-V-specific definitions for 64-bit linux-like values
 
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 use crate::{off64_t, off_t};
 
-pub type c_char = u8;
 pub type wchar_t = c_int;
 
 pub type nlink_t = c_uint;
diff --git a/src/unix/linux_like/linux/musl/b64/s390x.rs b/src/unix/linux_like/linux/musl/b64/s390x.rs
index 22a6cec4185f0..4b2d2c6bf29f8 100644
--- a/src/unix/linux_like/linux/musl/b64/s390x.rs
+++ b/src/unix/linux_like/linux/musl/b64/s390x.rs
@@ -1,8 +1,8 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::off_t;
 use crate::prelude::*;
 
 pub type blksize_t = i64;
-pub type c_char = u8;
 pub type nlink_t = u64;
 pub type wchar_t = i32;
 pub type greg_t = u64;
diff --git a/src/unix/linux_like/linux/musl/b64/x86_64/mod.rs b/src/unix/linux_like/linux/musl/b64/x86_64/mod.rs
index 6399f33209ac2..096f11262245a 100644
--- a/src/unix/linux_like/linux/musl/b64/x86_64/mod.rs
+++ b/src/unix/linux_like/linux/musl/b64/x86_64/mod.rs
@@ -1,7 +1,7 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::off_t;
 use crate::prelude::*;
 
-pub type c_char = i8;
 pub type wchar_t = i32;
 pub type nlink_t = u64;
 pub type blksize_t = c_long;
diff --git a/src/unix/linux_like/linux/uclibc/arm/mod.rs b/src/unix/linux_like/linux/uclibc/arm/mod.rs
index da3203f98a3de..4e7aa790c35ba 100644
--- a/src/unix/linux_like/linux/uclibc/arm/mod.rs
+++ b/src/unix/linux_like/linux/uclibc/arm/mod.rs
@@ -1,7 +1,7 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::off64_t;
 use crate::prelude::*;
 
-pub type c_char = u8;
 pub type wchar_t = c_uint;
 pub type c_long = i32;
 pub type c_ulong = u32;
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 6118928312b91..e3062e72778d1 100644
--- a/src/unix/linux_like/linux/uclibc/mips/mips32/mod.rs
+++ b/src/unix/linux_like/linux/uclibc/mips/mips32/mod.rs
@@ -1,7 +1,7 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::off64_t;
 use crate::prelude::*;
 
-pub type c_char = i8;
 pub type c_long = i32;
 pub type c_ulong = u32;
 pub type clock_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 86ee7bdff472b..6c604c2bca75f 100644
--- a/src/unix/linux_like/linux/uclibc/mips/mips64/mod.rs
+++ b/src/unix/linux_like/linux/uclibc/mips/mips64/mod.rs
@@ -1,9 +1,9 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::off64_t;
 use crate::prelude::*;
 
 pub type blkcnt_t = i64;
 pub type blksize_t = i64;
-pub type c_char = i8;
 pub type c_long = i64;
 pub type c_ulong = u64;
 pub type fsblkcnt_t = c_ulong;
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 07574581d77cc..ddc160329ff81 100644
--- a/src/unix/linux_like/linux/uclibc/x86_64/mod.rs
+++ b/src/unix/linux_like/linux/uclibc/x86_64/mod.rs
@@ -1,12 +1,12 @@
 //! Definitions for uclibc on 64bit systems
 
+pub use crate::arch::c_char_def as c_char;
 use crate::off64_t;
 use crate::prelude::*;
 
 pub type blkcnt_t = i64;
 pub type blksize_t = i64;
 pub type clock_t = i64;
-pub type c_char = u8;
 pub type c_long = i64;
 pub type c_ulong = u64;
 pub type fsblkcnt_t = c_ulong;
diff --git a/src/unix/newlib/aarch64/mod.rs b/src/unix/newlib/aarch64/mod.rs
index 0aa1de7dcc828..067044eb2c78b 100644
--- a/src/unix/newlib/aarch64/mod.rs
+++ b/src/unix/newlib/aarch64/mod.rs
@@ -1,7 +1,7 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
 pub type clock_t = c_long;
-pub type c_char = u8;
 pub type wchar_t = u32;
 
 pub type c_long = i64;
diff --git a/src/unix/newlib/arm/mod.rs b/src/unix/newlib/arm/mod.rs
index a32e37ede596a..c2fff5bb4e73d 100644
--- a/src/unix/newlib/arm/mod.rs
+++ b/src/unix/newlib/arm/mod.rs
@@ -1,7 +1,7 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
 pub type clock_t = c_long;
-pub type c_char = u8;
 pub type wchar_t = u32;
 
 pub type c_long = i32;
diff --git a/src/unix/newlib/espidf/mod.rs b/src/unix/newlib/espidf/mod.rs
index 1ac5113c917b5..df02a2aef1fcc 100644
--- a/src/unix/newlib/espidf/mod.rs
+++ b/src/unix/newlib/espidf/mod.rs
@@ -1,7 +1,7 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
 pub type clock_t = c_ulong;
-pub type c_char = u8;
 pub type wchar_t = u32;
 
 pub type c_long = i32;
diff --git a/src/unix/newlib/horizon/mod.rs b/src/unix/newlib/horizon/mod.rs
index 8c662f2a4517a..0368e46f88430 100644
--- a/src/unix/newlib/horizon/mod.rs
+++ b/src/unix/newlib/horizon/mod.rs
@@ -1,9 +1,9 @@
 //! ARMv6K Nintendo 3DS C Newlib definitions
 
+pub use crate::arch::c_char_def as c_char;
 use crate::off_t;
 use crate::prelude::*;
 
-pub type c_char = u8;
 pub type c_long = i32;
 pub type c_ulong = u32;
 
diff --git a/src/unix/newlib/powerpc/mod.rs b/src/unix/newlib/powerpc/mod.rs
index 6a9c42bdb7228..a775dc03b4deb 100644
--- a/src/unix/newlib/powerpc/mod.rs
+++ b/src/unix/newlib/powerpc/mod.rs
@@ -1,7 +1,7 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
 pub type clock_t = c_ulong;
-pub type c_char = u8;
 pub type wchar_t = c_int;
 
 pub type c_long = i32;
diff --git a/src/unix/newlib/vita/mod.rs b/src/unix/newlib/vita/mod.rs
index 120c4d54972f5..9250a141943f0 100644
--- a/src/unix/newlib/vita/mod.rs
+++ b/src/unix/newlib/vita/mod.rs
@@ -1,9 +1,9 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::off_t;
 use crate::prelude::*;
 
 pub type clock_t = c_long;
 
-pub type c_char = i8;
 pub type wchar_t = u32;
 
 pub type c_long = i32;
diff --git a/src/unix/nto/aarch64.rs b/src/unix/nto/aarch64.rs
index d0987f28be6b2..028a856b8587d 100644
--- a/src/unix/nto/aarch64.rs
+++ b/src/unix/nto/aarch64.rs
@@ -1,6 +1,6 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
-pub type c_char = u8;
 pub type wchar_t = u32;
 pub type c_long = i64;
 pub type c_ulong = u64;
diff --git a/src/unix/nto/x86_64.rs b/src/unix/nto/x86_64.rs
index 425f479949466..7c9522d88d895 100644
--- a/src/unix/nto/x86_64.rs
+++ b/src/unix/nto/x86_64.rs
@@ -1,6 +1,6 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
-pub type c_char = i8;
 pub type wchar_t = u32;
 pub type c_long = i64;
 pub type c_ulong = u64;
diff --git a/src/unix/nuttx/mod.rs b/src/unix/nuttx/mod.rs
index 95d1156bfc48b..ed3e1ed8bfa34 100644
--- a/src/unix/nuttx/mod.rs
+++ b/src/unix/nuttx/mod.rs
@@ -1,3 +1,4 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 use crate::{in6_addr, in_addr_t, timespec, DIR};
 
@@ -5,7 +6,6 @@ pub type nlink_t = u16;
 pub type ino_t = u16;
 pub type blkcnt_t = u64;
 pub type blksize_t = i16;
-pub type c_char = i8;
 pub type c_long = isize;
 pub type c_ulong = usize;
 pub type cc_t = u8;
diff --git a/src/unix/redox/mod.rs b/src/unix/redox/mod.rs
index db854dd6300ea..93523253b620c 100644
--- a/src/unix/redox/mod.rs
+++ b/src/unix/redox/mod.rs
@@ -1,6 +1,6 @@
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
-pub type c_char = i8;
 pub type wchar_t = i32;
 
 cfg_if! {
diff --git a/src/unix/solarish/mod.rs b/src/unix/solarish/mod.rs
index 9fce13226afc9..2346aa5670249 100644
--- a/src/unix/solarish/mod.rs
+++ b/src/unix/solarish/mod.rs
@@ -1,8 +1,8 @@
 use core::mem::size_of;
 
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
-pub type c_char = i8;
 pub type c_long = i64;
 pub type c_ulong = u64;
 pub type caddr_t = *mut c_char;
diff --git a/src/vxworks/aarch64.rs b/src/vxworks/aarch64.rs
index 4032488b6c0d5..da997749e22df 100644
--- a/src/vxworks/aarch64.rs
+++ b/src/vxworks/aarch64.rs
@@ -1,4 +1,5 @@
-pub type c_char = u8;
+pub use crate::arch::c_char_def as c_char;
+
 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 55240068aa08e..7277a64f47d47 100644
--- a/src/vxworks/arm.rs
+++ b/src/vxworks/arm.rs
@@ -1,4 +1,5 @@
-pub type c_char = u8;
+pub use crate::arch::c_char_def as c_char;
+
 pub type wchar_t = u32;
 pub type c_long = i32;
 pub type c_ulong = u32;
diff --git a/src/vxworks/powerpc.rs b/src/vxworks/powerpc.rs
index 55240068aa08e..7277a64f47d47 100644
--- a/src/vxworks/powerpc.rs
+++ b/src/vxworks/powerpc.rs
@@ -1,4 +1,5 @@
-pub type c_char = u8;
+pub use crate::arch::c_char_def as c_char;
+
 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 4032488b6c0d5..da997749e22df 100644
--- a/src/vxworks/powerpc64.rs
+++ b/src/vxworks/powerpc64.rs
@@ -1,4 +1,5 @@
-pub type c_char = u8;
+pub use crate::arch::c_char_def as c_char;
+
 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 e617bb83c6ce3..5f86b28b160d3 100644
--- a/src/vxworks/riscv32.rs
+++ b/src/vxworks/riscv32.rs
@@ -1,4 +1,5 @@
-pub type c_char = i8;
+pub use crate::arch::c_char_def as c_char;
+
 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 5e95ea2567ddf..f4493e3e2f405 100644
--- a/src/vxworks/riscv64.rs
+++ b/src/vxworks/riscv64.rs
@@ -1,4 +1,5 @@
-pub type c_char = i8;
+pub use crate::arch::c_char_def as c_char;
+
 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 e617bb83c6ce3..5f86b28b160d3 100644
--- a/src/vxworks/x86.rs
+++ b/src/vxworks/x86.rs
@@ -1,4 +1,5 @@
-pub type c_char = i8;
+pub use crate::arch::c_char_def as c_char;
+
 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 5e95ea2567ddf..f4493e3e2f405 100644
--- a/src/vxworks/x86_64.rs
+++ b/src/vxworks/x86_64.rs
@@ -1,4 +1,5 @@
-pub type c_char = i8;
+pub use crate::arch::c_char_def as c_char;
+
 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 b5e77c5c92eb0..7c0fbd4c937aa 100644
--- a/src/wasi/mod.rs
+++ b/src/wasi/mod.rs
@@ -5,9 +5,9 @@
 
 use core::iter::Iterator;
 
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
-pub type c_char = i8;
 pub type c_uchar = u8;
 pub type c_schar = i8;
 pub type c_int = i32;
diff --git a/src/windows/mod.rs b/src/windows/mod.rs
index 052df670f9b92..af2ec0a858679 100644
--- a/src/windows/mod.rs
+++ b/src/windows/mod.rs
@@ -1,5 +1,6 @@
 //! Windows CRT definitions
 
+pub use crate::arch::c_char_def as c_char;
 use crate::prelude::*;
 
 pub type c_schar = i8;
@@ -22,7 +23,6 @@ pub type uintptr_t = usize;
 pub type ssize_t = isize;
 pub type sighandler_t = usize;
 
-pub type c_char = i8;
 pub type c_long = i32;
 pub type c_ulong = u32;
 pub type wchar_t = u16;
diff --git a/src/xous.rs b/src/xous.rs
index 4073349306fb9..24dc278b6b650 100644
--- a/src/xous.rs
+++ b/src/xous.rs
@@ -1,5 +1,7 @@
 //! Xous C type definitions
 
+pub use crate::arch::c_char_def as c_char;
+
 pub type c_schar = i8;
 pub type c_uchar = u8;
 pub type c_short = i16;
@@ -20,7 +22,6 @@ pub type uintptr_t = usize;
 pub type ssize_t = isize;
 
 pub type off_t = i64;
-pub type c_char = u8;
 pub type c_long = i64;
 pub type c_ulong = u64;
 pub type wchar_t = u32;