diff --git a/winsup/cygwin/include/asm/bitsperlong.h b/winsup/cygwin/include/asm/bitsperlong.h
new file mode 100644
index 000000000..48037b645
--- /dev/null
+++ b/winsup/cygwin/include/asm/bitsperlong.h
@@ -0,0 +1,18 @@
+/* asm/bitsperlong.h
+
+This file is part of Cygwin.
+
+This software is a copyrighted work licensed under the terms of the
+Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
+details. */
+
+#ifndef __ASM_BITSPERLONG_H
+#define __ASM_BITSPERLONG_H
+
+#ifdef __x86_64__
+#define __BITS_PER_LONG 64
+#else
+#define __BITS_PER_LONG 32
+#endif
+
+#endif /* __ASM_BITSPERLONG_H */
diff --git a/winsup/cygwin/include/asm/posix_types.h b/winsup/cygwin/include/asm/posix_types.h
new file mode 100644
index 000000000..4e9aac057
--- /dev/null
+++ b/winsup/cygwin/include/asm/posix_types.h
@@ -0,0 +1,14 @@
+/* asm/posix_types.h
+
+This file is part of Cygwin.
+
+This software is a copyrighted work licensed under the terms of the
+Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
+details. */
+
+#ifndef _ASM_POSIX_TYPES_H
+#define _ASM_POSIX_TYPES_H
+
+/* This is just a placeholder to simplify cross-compiling the Linux kernel */
+
+#endif /* _ASM_POSIX_TYPES_H */
diff --git a/winsup/cygwin/include/asm/types.h b/winsup/cygwin/include/asm/types.h
index c2342efc1..e1e947054 100644
--- a/winsup/cygwin/include/asm/types.h
+++ b/winsup/cygwin/include/asm/types.h
@@ -9,6 +9,8 @@ details. */
 #ifndef _ASM_TYPES_H
 #define _ASM_TYPES_H
 
+#include <asm/bitsperlong.h>
+
 typedef __signed__ char __s8;
 typedef unsigned char __u8;