Make bash-2.05b build with minimal changes.

This is really neat. :^)

LibC/Makefile

@@ -31,6 +31,7 @@ LIBC_OBJS = \
        ulimit.o \
        qsort.o \
        ioctl.o \
+       math.o \
        entry.o
 
 OBJS = $(AK_OBJS) $(LIBC_OBJS)

LibC/ctype.cpp

@@ -11,3 +11,18 @@ int isprint(int c)
 {
     return isdigit(c) || isupper(c) || islower(c) || ispunct(c) || isspace(c);
 }
+
+int isalnum(int c)
+{
+    return isalpha(c) || isdigit(c);
+}
+
+int isalpha(int c)
+{
+    return isupper(c) || islower(c);
+}
+
+int iscntrl(int c)
+{
+    return (c >= 0 && c <= 0x1f) || c == 0x7f;
+}

LibC/ctype.h

@@ -43,7 +43,10 @@ ALWAYS_INLINE int isdigit(int c)
     return c >= '0' && c <= '9';
 }
 
+int isalpha(int c);
+int isalnum(int c);
 int ispunct(int c);
 int isprint(int c);
+int iscntrl(int c);
 
 __END_DECLS

LibC/limits.h

@@ -7,3 +7,8 @@
 
 #define INT_MAX INT32_MAX
 #define INT_MIN INT32_MIN
+
+#define CHAR_BIT 8
+#define SCHAR_MIN (-128)
+#define SCHAR_MAX 127
+#define UCHAR_MAX 255

LibC/math.cpp

@@ -0,0 +1,14 @@
+#include <math.h>
+#include <assert.h>
+
+extern "C" {
+
+double pow(double x, double y)
+{
+    (void) x;
+    (void) y;
+    assert(false);
+}
+
+}
+

LibC/math.h

@@ -0,0 +1,12 @@
+#pragma once
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+
+#define HUGE_VAL 1e10000
+
+double pow(double x, double y);
+
+__END_DECLS
+

LibC/stdio.cpp

@@ -235,12 +235,17 @@ static void stream_putch(char*&, char ch)
     fputc(ch, __current_stream);
 }
 
-int fprintf(FILE* fp, const char* fmt, ...)
+int vfprintf(FILE* stream, const char* fmt, va_list ap)
+{
+    __current_stream = stream;
+    return printfInternal(stream_putch, nullptr, fmt, ap);
+}
+
+int fprintf(FILE* stream, const char* fmt, ...)
 {
-    __current_stream = fp;
     va_list ap;
     va_start(ap, fmt);
-    int ret = printfInternal(stream_putch, nullptr, fmt, ap);
+    int ret = vfprintf(stream, fmt, ap);
     va_end(ap);
     return ret;
 }
@@ -259,11 +264,18 @@ static void buffer_putch(char*& bufptr, char ch)
     *bufptr++ = ch;
 }
 
+int vsprintf(char* buffer, const char* fmt, va_list ap)
+{
+    int ret = printfInternal(buffer_putch, buffer, fmt, ap);
+    buffer[ret] = '\0';
+    return ret;
+}
+
 int sprintf(char* buffer, const char* fmt, ...)
 {
     va_list ap;
     va_start(ap, fmt);
-    int ret = printfInternal(buffer_putch, buffer, fmt, ap);
+    int ret = vsprintf(buffer, fmt, ap);
     buffer[ret] = '\0';
     va_end(ap);
     return ret;

LibC/stdio.h

@@ -2,6 +2,7 @@
 
 #include <sys/cdefs.h>
 #include <sys/types.h>
+#include <stdarg.h>
 #include <limits.h>
 
 __BEGIN_DECLS
@@ -49,6 +50,8 @@ int feof(FILE*);
 int fflush(FILE*);
 size_t fread(void* ptr, size_t size, size_t nmemb, FILE*);
 size_t fwrite(const void* ptr, size_t size, size_t nmemb, FILE*);
+int vfprintf(FILE*, const char* fmt, va_list);
+int vsprintf(char* buffer, const char* fmt, va_list);
 int fprintf(FILE*, const char* fmt, ...);
 int printf(const char* fmt, ...);
 int sprintf(char* buffer, const char* fmt, ...);

LibC/sys/types.h

@@ -5,6 +5,14 @@
 
 __BEGIN_DECLS
 
+typedef unsigned int u_int;
+typedef unsigned long u_long;
+typedef int ptrdiff_t;
+typedef unsigned long int __uintmax_t;
+typedef __uintmax_t uintmax_t;
+typedef long int __intmax_t;
+typedef __intmax_t intmax_t;
+
 typedef uint32_t uid_t;
 typedef uint32_t gid_t;
 typedef int pid_t;

LibC/termcap.cpp

@@ -56,6 +56,12 @@ void ensure_caps()
     caps->set("up", "\033[A");
     caps->set("vb", "");
     caps->set("am", "");
+    caps->set("@7", "");
+    caps->set("kH", "");
+    caps->set("kI", "\033[L");
+    caps->set("kh", "\033[H");
+    caps->set("vs", "");
+    caps->set("ve", "");
 
     caps->set("co", "80");
     caps->set("li", "25");
@@ -75,7 +81,8 @@ char* tgetstr(char* id, char** area)
         *area += strlen(val) + 1;
         return ret;
     }
-    assert(false);
+    fprintf(stderr, "tgetstr: missing cap id='%s'\n", id);
+    return nullptr;
 }
 
 int tgetflag(char* id)

LibC/time.cpp

@@ -1,5 +1,6 @@
-#include "time.h"
-#include "errno.h"
+#include <time.h>
+#include <errno.h>
+#include <assert.h>
 #include <Kernel/Syscall.h>
 
 extern "C" {
@@ -26,4 +27,16 @@ char* ctime(const time_t*)
     return const_cast<char*>("ctime() not implemented");
 }
 
+struct tm* localtime(const time_t*)
+{
+    assert(false);
+}
+
+long timezone = 0;
+
+void tzset()
+{
+    assert(false);
+}
+
 }

LibC/time.h

@@ -10,9 +10,25 @@ struct timezone {
     int tz_dsttime;
 };
 
+struct tm {
+    int tm_sec;    /* Seconds (0-60) */
+    int tm_min;    /* Minutes (0-59) */
+    int tm_hour;   /* Hours (0-23) */
+    int tm_mday;   /* Day of the month (1-31) */
+    int tm_mon;    /* Month (0-11) */
+    int tm_year;   /* Year - 1900 */
+    int tm_wday;   /* Day of the week (0-6, Sunday = 0) */
+    int tm_yday;   /* Day in the year (0-365, 1 Jan = 0) */
+    int tm_isdst;  /* Daylight saving time */
+};
+
+extern long timezone;
+
 int gettimeofday(struct timeval*, struct timezone* tz);
+struct tm* localtime(const time_t*);
 time_t time(time_t*);
 char* ctime(const time_t*);
+void tzset();
 
 __END_DECLS
 

LibC/unistd.cpp

@@ -268,4 +268,10 @@ int access(const char* pathname, int mode)
     __RETURN_WITH_ERRNO(rc, rc, -1);
 }
 
+int mknod(const char* pathname, mode_t, dev_t)
+{
+    (void) pathname;
+    assert(false);
+}
+
 }

LibC/unistd.h

@@ -51,6 +51,7 @@ int pipe(int pipefd[2]);
 unsigned int alarm(unsigned int seconds);
 int access(const char* pathname, int mode);
 int isatty(int fd);
+int mknod(const char* pathname, mode_t, dev_t);
 
 #define WEXITSTATUS(status) (((status) & 0xff00) >> 8)
 #define WTERMSIG(status) ((status) & 0x7f)