set up build files

Author: uzairnawaz

libc/config/linux/x86_64/entrypoints.txt

@@ -386,6 +386,7 @@ set(TARGET_LIBC_ENTRYPOINTS
     libc.src.wchar.wmemchr
     libc.src.wchar.wcpcpy
     libc.src.wchar.wcpncpy
+    libc.src.wchar.wcstok
 
     # sys/uio.h entrypoints
     libc.src.sys.uio.writev

libc/include/wchar.yaml

@@ -189,6 +189,14 @@ functions:
     arguments:
       - type: wchar_t *__restrict
       - type: const wchar_t *__restrict
+  - name: wcstok
+    standards:
+      - stdc
+    return_type: wchar_t *
+    arguments:
+      - type: wchar_t *__restrict
+      - type: const wchar_t *__restrict
+      - type: wchar_t** __restrict
   - name: wcpcpy
     standards:
       - stdc

libc/src/wchar/CMakeLists.txt

@@ -34,6 +34,16 @@ add_entrypoint_object(
     libc.src.__support.wctype_utils
 )
 
+add_entrypoint_object(
+  wcstok
+  SRCS
+    wcstok.cpp
+  HDRS
+    wcstok.h
+  DEPENDS
+    libc.hdr.types.wchar_t
+)
+
 add_entrypoint_object(
   wcrtomb
   SRCS

libc/src/wchar/wcstok.cpp

@@ -0,0 +1,22 @@
+//===-- Implementation of wcstok ------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/wchar/wcstok.h"
+
+#include "hdr/types/wchar_t.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+LLVM_LIBC_FUNCTION(wchar_t *, wcstok,
+                   (wchar_t *__restrict str, const wchar_t *__restrict delim,
+                    wchar_t **__restrict ptr)) {
+  
+}
+
+} // namespace LIBC_NAMESPACE_DECL

libc/src/wchar/wcstok.h

@@ -0,0 +1,22 @@
+//===-- Implementation header for wcstok ----------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_WCHAR_WCSTOK_H
+#define LLVM_LIBC_SRC_WCHAR_WCSTOK_H
+
+#include "hdr/types/wchar_t.h"
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+wchar_t *wcstok(wchar_t *__restrict str, const wchar_t *__restrict delim,
+                wchar_t **__restrict ptr);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_WCHAR_WCSTOK_H