Add missing libc headers

libc/include/ctype.h

@@ -0,0 +1,4 @@
+#ifndef _CTYPE_H
+#define _CTYPE_H
+
+#endif // !_CTYPE_H

libc/include/fcntl.h

@@ -0,0 +1,4 @@
+#ifndef _FNCTL_H
+#define _FNCTL_H
+
+#endif // !_FNCTL_H

libc/include/inttypes.h

@@ -0,0 +1,40 @@
+#ifndef _INTTYPES_H
+#define _INTTYPES_H
+
+typedef __INT8_TYPE__ int8_t;
+typedef __INT16_TYPE__ int16_t;
+typedef __INT32_TYPE__ int32_t;
+typedef __INT64_TYPE__ int64_t;
+typedef __UINT8_TYPE__ uint8_t;
+typedef __UINT16_TYPE__ uint16_t;
+typedef __UINT32_TYPE__ uint32_t;
+typedef __UINT64_TYPE__ uint64_t;
+
+typedef __INT_LEAST8_TYPE__ int_least8_t;
+typedef __INT_LEAST16_TYPE__ int_least16_t;
+typedef __INT_LEAST32_TYPE__ int_least32_t;
+typedef __INT_LEAST64_TYPE__ int_least64_t;
+typedef __UINT_LEAST8_TYPE__ uint_least8_t;
+typedef __UINT_LEAST16_TYPE__ uint_least16_t;
+typedef __UINT_LEAST32_TYPE__ uint_least32_t;
+typedef __UINT_LEAST64_TYPE__ uint_least64_t;
+
+typedef __INT_FAST8_TYPE__ int_fast8_t;
+typedef __INT_FAST16_TYPE__ int_fast16_t;
+typedef __INT_FAST32_TYPE__ int_fast32_t;
+typedef __INT_FAST64_TYPE__ int_fast64_t;
+typedef __UINT_FAST8_TYPE__ uint_fast8_t;
+typedef __UINT_FAST16_TYPE__ uint_fast16_t;
+typedef __UINT_FAST32_TYPE__ uint_fast32_t;
+typedef __UINT_FAST64_TYPE__ uint_fast64_t;
+
+typedef __INTPTR_TYPE__ intptr_t;
+typedef __UINTPTR_TYPE__ uintptr_t;
+
+typedef __INTMAX_TYPE__ intmax_t;
+typedef __UINTMAX_TYPE__ uintmax_t;
+
+typedef __PTRDIFF_TYPE__ ptrdiff_t;
+typedef __SIZE_TYPE__ size_t;
+
+#endif // !_INTTYPES_H

libc/include/math.h

@@ -0,0 +1,4 @@
+#ifndef _MATH_H
+#define _MATH_H
+
+#endif // !_MATH_H

libc/include/strings.h

@@ -0,0 +1,4 @@
+#ifndef _STRINGS_H
+#define _STRINGS_H
+
+#endif // !_STRINGS_H

libc/include/sys/stat.h

@@ -0,0 +1,4 @@
+#ifndef _SYS_STAT_H
+#define _SYS_STAT_H
+
+#endif