diff --git a/ctype/lib.rs b/ctype/lib.rs
new file mode 100644
index 0000000000000000000000000000000000000000..a10b9ca93a12ba94c10185a73a16c823df3cb805
--- /dev/null
+++ b/ctype/lib.rs
@@ -0,0 +1,62 @@
+/* automatically generated by rust-bindgen */
+
+pub extern "C" fn isalnum(arg1: libc::c_int) -> libc::c_int {
+    unimplemented!();
+}
+
+pub extern "C" fn isalpha(arg1: libc::c_int) -> libc::c_int {
+    unimplemented!();
+}
+
+pub extern "C" fn isascii(arg1: libc::c_int) -> libc::c_int {
+    unimplemented!();
+}
+
+pub extern "C" fn iscntrl(arg1: libc::c_int) -> libc::c_int {
+    unimplemented!();
+}
+
+pub extern "C" fn isdigit(arg1: libc::c_int) -> libc::c_int {
+    unimplemented!();
+}
+
+pub extern "C" fn isgraph(arg1: libc::c_int) -> libc::c_int {
+    unimplemented!();
+}
+
+pub extern "C" fn islower(arg1: libc::c_int) -> libc::c_int {
+    unimplemented!();
+}
+
+pub extern "C" fn isprint(arg1: libc::c_int) -> libc::c_int {
+    unimplemented!();
+}
+
+pub extern "C" fn ispunct(arg1: libc::c_int) -> libc::c_int {
+    unimplemented!();
+}
+
+pub extern "C" fn isspace(arg1: libc::c_int) -> libc::c_int {
+    unimplemented!();
+}
+
+pub extern "C" fn isupper(arg1: libc::c_int) -> libc::c_int {
+    unimplemented!();
+}
+
+pub extern "C" fn isxdigit(arg1: libc::c_int) -> libc::c_int {
+    unimplemented!();
+}
+
+pub extern "C" fn toascii(arg1: libc::c_int) -> libc::c_int {
+    unimplemented!();
+}
+
+pub extern "C" fn tolower(arg1: libc::c_int) -> libc::c_int {
+    unimplemented!();
+}
+
+pub extern "C" fn toupper(arg1: libc::c_int) -> libc::c_int {
+    unimplemented!();
+}
+