Add Mac std lib overrides

Author: Neirn

Makefile

@@ -35,6 +35,9 @@ else ifneq ($(shell uname),Darwin)
     # This is done this way because -nostdinc would prevent a system install of libc++ from being included as well.
     CXXFLAGS += -I include/libc/stdlib_override
 else
+    # Intercept specific includes on MacOS to prevent them from including the MacOS SDK counterparts.
+    # This is done this way because -nostdinc would prevent a system install of libc++ from being included as well.
+    CXXFLAGS += -I include/libc/stdlib_override_mac
 endif
 
 rwildcard = $(foreach d,$(wildcard $(1:=/*)),$(call rwildcard,$d,$2) $(filter $(subst *,%,$2),$d))

include/libc/stdlib_override_mac/ctype.h

@@ -0,0 +1,10 @@
+#ifndef __STDLIB_OVERRIDE_MAC_CTYPE_H__
+#define __STDLIB_OVERRIDE_MAC_CTYPE_H__
+
+#define _CTYPE_H_
+
+#if __has_include_next(<ctype.h>)
+#  include_next <ctype.h>
+#endif
+
+#endif

include/libc/stdlib_override_mac/errno.h

@@ -0,0 +1,11 @@
+#ifndef __STDLIB_OVERRIDE_MAC_ERRNO_H__
+#define __STDLIB_OVERRIDE_MAC_ERRNO_H__
+
+#define _SYS_ERRNO_H_
+#include "libc/errno.h"
+
+#if __has_include_next(<errno.h>)
+#  include_next <errno.h>
+#endif
+
+#endif

include/libc/stdlib_override_mac/limits.h

@@ -0,0 +1,11 @@
+#ifndef __STDLIB_OVERRIDE_MAC_LIMITS_H__
+#define __STDLIB_OVERRIDE_MAC_LIMITS_H__
+
+#define _LIMITS_H_
+#include "libc/limits.h"
+
+#if __has_include_next(<limits.h>)
+#  include_next <limits.h>
+#endif
+
+#endif

include/libc/stdlib_override_mac/math.h

@@ -0,0 +1,11 @@
+#ifndef __STDLIB_OVERRIDE_MAC_MATH_H__
+#define __STDLIB_OVERRIDE_MAC_MATH_H__
+
+#define __MATH_H__
+#include "libc/math.h"
+
+#if __has_include_next(<math.h>)
+#  include_next <math.h>
+#endif
+
+#endif

include/libc/stdlib_override_mac/stdint.h

@@ -0,0 +1,11 @@
+#ifndef __STDLIB_OVERRIDE_MAC_STDINT_H__
+#define __STDLIB_OVERRIDE_MAC_STDINT_H__
+
+#define _STDINT_H_
+#include "libc/stdint.h"
+
+#if __has_include_next(<stdint.h>)
+#  include_next <stdint.h>
+#endif
+
+#endif

include/libc/stdlib_override_mac/stdio.h

@@ -0,0 +1,11 @@
+#ifndef __STDLIB_OVERRIDE_MAC_STDIO_H__
+#define __STDLIB_OVERRIDE_MAC_STDIO_H__
+
+#define _STDIO_H_
+#include "libc/stdio.h"
+
+#if __has_include_next(<stdio.h>)
+#  include_next <stdio.h>
+#endif
+
+#endif

include/libc/stdlib_override_mac/stdlib.h

@@ -0,0 +1,11 @@
+#ifndef __STDLIB_OVERRIDE_MAC_STDLIB_H__
+#define __STDLIB_OVERRIDE_MAC_STDLIB_H__
+
+#define _STDLIB_H_
+#include "libc/stdlib.h"
+
+#if __has_include_next(<stdlib.h>)
+#  include_next <stdlib.h>
+#endif
+
+#endif

include/libc/stdlib_override_mac/string.h

@@ -0,0 +1,11 @@
+#ifndef __STDLIB_OVERRIDE_MAC_STRING_H__
+#define __STDLIB_OVERRIDE_MAC_STRING_H__
+
+#define _STRING_H_
+#include "libc/string.h"
+
+#if __has_include_next(<string.h>)
+#  include_next <string.h>
+#endif
+
+#endif

include/libc/stdlib_override_mac/sys/_types/_mbstate_t.h

@@ -0,0 +1,8 @@
+#ifndef __STDLIB_OVERRIDE_MAC_MBSTATE_T_H__
+#define __STDLIB_OVERRIDE_MAC_MBSTATE_T_H__
+
+#include "libc/uchar.h"
+
+#define _MBSTATE_T
+
+#endif