add declarations for unsupported functions for libstdc++

So that it compiles - it won't link but we can leave that for later.

include/errno.h

@@ -33,6 +33,66 @@ extern int errno;
 #define ENOMEDIUM    22   /* No medium found */
 #define EMEDIUMTYPE  23   /* Wrong medium type */
 
+/* Error codes used by libstdc++. */
+#define EAFNOSUPPORT 24
+#define EADDRINUSE   25
+#define EADDRNOTAVAIL 26
+#define EISCONN      27
+#define E2BIG        28
+#define EFAULT       29
+#define EPIPE        30
+#define ECONNABORTED 31
+#define EALREADY     32
+#define ECONNREFUSED 33
+#define ECONNRESET   34
+#define EXDEV        35
+#define EDESTADDRREQ 36
+#define EBUSY        37
+#define ENOEXEC      38
+#define EFBIG        39
+#define ENAMETOOLONG 40
+#define ENOSYS       41
+#define EHOSTUNREACH 42
+#define ENOTTY       43
+#define EMSGSIZE     44
+#define ENETDOWN     45
+#define ENETRESET    46
+#define ENETUNREACH  47
+#define ENOBUFS      48
+#define ECHILD       49
+#define ENOLCK       50
+#define ENOMSG       51
+#define ENOPROTOOPT  52
+#define ENXIO        53
+#define ESRCH        54
+#define ENOTSOCK     55
+#define ENOTCONN     56
+#define EINPROGRESS  57
+#define EPERM        58
+#define EOPNOTSUPP   59
+#define EWOULDBLOCK  60
+#define EPROTONOSUPPORT 61
+#define EROFS        62
+#define EDEADLK      63
+#define ETIMEDOUT    64
+#define EMFILE       65
+#define EMLINK       66
+#define ELOOP        67
+#define EPROTOTYPE   68
+#define EBADMSG      69
+#define EIDRM        70
+#define ENOLINK      71
+#define ENODATA      72
+#define ENOSR        73
+#define ECANCELED    74
+#define EOWNERDEAD   75
+#define EPROTO       76
+#define ENOTRECOVERABLE 77
+#define ETIME        78
+#define ETXTBUSY     79
+#define EOVERFLOW    80
+
+
 #ifdef __cplusplus
 }
 #endif

include/stdio.h

@@ -150,6 +150,12 @@ extern FILE *stderr;
    In gint, the file must not be open (open files' names are not tracked). */
 extern int remove(char const *__filename);
 
+extern int rename(char const *__old, char const *__new);
+
+extern FILE *tmpfile(void);
+
+extern char *tmpnam(char *__s);
+
 /*
 ** File access functions.
 */
@@ -181,6 +187,8 @@ extern void setbuf(FILE * __restrict__ __fp, char * __restrict__ __buf);
 extern int setvbuf(FILE * __restrict__ __fp, char * __restrict__ __buf,
 	int __mode, size_t __size);
 
+extern int fileno(FILE *__fp);
+
 /*
 ** Formatted input/output functions.
 **
@@ -262,6 +270,30 @@ extern int asprintf(char ** __restrict__ __str,
 extern int vasprintf(char ** __restrict__ __str,
 	char const * __restrict__ __format, va_list __args);
 
+/* Formatted scan from file. */
+extern int fscanf(FILE * __restrict__ __fp,
+	char const * __restrict__ __format, ...);
+
+/* Formatted scan from stdin. */
+extern int scanf(
+	char const * __restrict__ __format, ...);
+
+/* Formatted scan from string. */
+extern int sscanf(const char * __restrict__ __s,
+	char const * __restrict__ __format, ...);
+
+/* Formatted scan from file (variable argument list). */
+extern int vfscanf(FILE * __restrict__ __fp,
+	char const * __restrict__ __format, va_list __args);
+
+/* Formatted scan from stdin (variable argument list). */
+extern int vscanf(
+	char const * __restrict__ __format, va_list __args);
+
+/* Formatted scan from string (variable argument list). */
+extern int vsscanf(char const * __restrict__ __s,
+	char const * __restrict__ __format, va_list __args);
+
 /*
 ** Character input/output functions.
 */

include/stdlib.h

@@ -38,6 +38,8 @@ extern void free(void *__ptr);
 __attribute__((noreturn))
 extern void abort(void);
 
+extern int atexit(void (*__func)(void));
+
 /* Exit; calls handlers, flushes and closes streams and temporary files. */
 __attribute__((noreturn))
 extern void exit(int __status);
@@ -46,6 +48,10 @@ extern void exit(int __status);
 __attribute__((noreturn))
 extern void _Exit(int __status);
 
+extern char *getenv(char const *__name);
+
+extern int system(char const *__string);
+
 /* Integer arithmetic functions. */
 
 extern int abs(int __j);
@@ -142,15 +148,20 @@ extern long double strtold(
 #define RAND_MAX 0x7fffffff
 
 /* Seed the PRNG. */
-extern void srand(unsigned int seed);
+extern void srand(unsigned int __seed);
 
 /* Generate a pseudo-random number between 0 and RAND_MAX. */
 extern int rand(void);
 
 /* Searching and sorting utilities. */
 
-void qsort(void *base, size_t nmemb, size_t size,
+extern void *bsearch(void const *__key,
-	int (*compare)(void const *left, void const *right));
+	void const *__base, size_t __nmemb, size_t __size,
+	int (*__compare)(void const *, void const *));
+
+extern void qsort(
+	void *__base, size_t __nmemb, size_t __size,
+	int (*__compare)(void const *, void const *));
 
 #ifdef __cplusplus
 }

include/sys/stat.h

@@ -55,16 +55,16 @@ struct stat {
 
     dev_t      st_dev;
     ino_t      st_ino;
-    nlink_t    st_link;
+    nlink_t    st_nlink;
     uid_t      st_uid;
     gid_t      st_gid;
     dev_t      st_rdev;
     blksize_t  st_blksize;
     blkcnt_t   st_blocks;
 
-//    struct timespec st_atim;
+    struct timespec st_atim;
-//    struct timespec st_mtim;
+    struct timespec st_mtim;
-//    struct timespec st_ctim;
+    struct timespec st_ctim;
 };
 
 #define st_atime st_atim.tv_sec
@@ -75,6 +75,8 @@ struct stat {
 extern int stat(char const * __restrict__ __pathname,
     struct stat * __restrict__ __statbuf);
 
+extern int chmod(char const *__pathname, mode_t mode);
+
 #ifdef __cplusplus
 }
 #endif

include/time.h

@@ -31,6 +31,12 @@ struct tm {
 	int tm_isdst;   /* Daylight Saving Time flag */
 };
 
+/* Full time specification with second/nanosecond precision. */
+struct timespec {
+   time_t tv_sec;
+   long tv_nsec;
+};
+
 /* Returns CPU time used by the program (in number of CLOCKS_PER_SEC). */
 extern clock_t clock(void);
 

include/unistd.h

@@ -41,6 +41,10 @@ extern int mkdir(const char *__path, mode_t __mode);
 /* Remove an empty directory. */
 extern int rmdir(const char *__path);
 
+extern char *getcwd(char *__buf, size_t __size);
+
+extern int chdir(char const *__path);
+
 
 /* Kernel-style functions supported only by Vhex. */