Add a "fork" of musl as //fusl.

fusl/include/sys/personality.h

+#ifndef _PERSONALITY_H
+#define _PERSONALITY_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define ADDR_NO_RANDOMIZE  0x0040000
+#define MMAP_PAGE_ZERO     0x0100000
+#define ADDR_COMPAT_LAYOUT 0x0200000
+#define READ_IMPLIES_EXEC  0x0400000
+#define ADDR_LIMIT_32BIT   0x0800000
+#define SHORT_INODE        0x1000000
+#define WHOLE_SECONDS      0x2000000
+#define STICKY_TIMEOUTS    0x4000000
+#define ADDR_LIMIT_3GB     0x8000000
+
+#define PER_LINUX 0
+#define PER_LINUX_32BIT ADDR_LIMIT_32BIT
+#define PER_SVR4 (1 | STICKY_TIMEOUTS | MMAP_PAGE_ZERO)
+#define PER_SVR3 (2 | STICKY_TIMEOUTS | SHORT_INODE)
+#define PER_SCOSVR3 (3 | STICKY_TIMEOUTS | WHOLE_SECONDS | SHORT_INODE)
+#define PER_OSR5 (3 | STICKY_TIMEOUTS | WHOLE_SECONDS)
+#define PER_WYSEV386 (4 | STICKY_TIMEOUTS | SHORT_INODE)
+#define PER_ISCR4 (5 | STICKY_TIMEOUTS)
+#define PER_BSD 6
+#define PER_SUNOS (6 | STICKY_TIMEOUTS)
+#define PER_XENIX (7 | STICKY_TIMEOUTS | SHORT_INODE)
+#define PER_LINUX32 8
+#define PER_LINUX32_3GB (8 | ADDR_LIMIT_3GB)
+#define PER_IRIX32 (9 | STICKY_TIMEOUTS)
+#define PER_IRIXN32 (0xa | STICKY_TIMEOUTS)
+#define PER_IRIX64 (0x0b | STICKY_TIMEOUTS)
+#define PER_RISCOS 0xc
+#define PER_SOLARIS (0xd | STICKY_TIMEOUTS)
+#define PER_UW7 (0xe | STICKY_TIMEOUTS | MMAP_PAGE_ZERO)
+#define PER_OSF4 0xf
+#define PER_HPUX 0x10
+#define PER_MASK 0xff
+
+int personality(unsigned long);
+
+#ifdef __cplusplus
+}
+#endif
+#endif