MSVC compatibility

1. MSVC compatibility
2. CONFIG_VERSION (too common/generic) replaced by QUICKJS_VERSION due to clashes with other libraries that use CONFIG_VERSION too

.gitignore

@@ -0,0 +1,9 @@
+# OS generated files 
+## Mac OS X
+.DS_Store
+.Trashes
+.Spotlight-V100
+# # Windows
+Thumbs.db
+.bin
+.build

cutils.c

@@ -29,6 +29,30 @@
 
 #include "cutils.h"
 
+#ifdef _MSC_VER
+
+ // From: https://stackoverflow.com/a/26085827
+int gettimeofday(struct timeval * tp, struct timezone * tzp)
+{
+  static const uint64_t EPOCH = ((uint64_t)116444736000000000ULL);
+
+  SYSTEMTIME  system_time;
+  FILETIME    file_time;
+  uint64_t    time;
+
+  GetSystemTime(&system_time);
+  SystemTimeToFileTime(&system_time, &file_time);
+  time = ((uint64_t)file_time.dwLowDateTime);
+  time += ((uint64_t)file_time.dwHighDateTime) << 32;
+
+  tp->tv_sec = (long)((time - EPOCH) / 10000000L);
+  tp->tv_usec = (long)(system_time.wMilliseconds * 1000);
+
+  return 0;
+}
+#endif
+
+
 void pstrcpy(char *buf, int buf_size, const char *str)
 {
     int c;
@@ -297,7 +321,7 @@ int unicode_from_utf8(const uint8_t *p, int max_len, const uint8_t **pp)
             return -1;
         c = (c << 6) | (b & 0x3f);
     }
-    if (c < utf8_min_code[l - 1])
+    if (c < (int)utf8_min_code[l - 1])
         return -1;
     *pp = p;
     return c;

cutils.h

@@ -28,14 +28,32 @@
 #include <stdlib.h>
 #include <inttypes.h>
 
+#ifdef _MSC_VER
+  #include <windows.h>
+  #include <intrin.h>
+#else 
+  #include <sys/time.h>
+#endif
+
 /* set if CPU is big endian */
 #undef WORDS_BIGENDIAN
 
+#ifndef __has_attribute
+  #define likely(x)    (x)
+  #define unlikely(x)  (x)
+  #define force_inline __forceinline
+  #define no_inline __declspec(noinline)
+  #define __maybe_unused
+  #define __attribute__(x)
+  #define __attribute(x)
+  typedef size_t ssize_t;
+#else
   #define likely(x)       __builtin_expect(!!(x), 1)
   #define unlikely(x)     __builtin_expect(!!(x), 0)
   #define force_inline inline __attribute__((always_inline))
   #define no_inline __attribute__((noinline))
   #define __maybe_unused __attribute__((unused))
+#endif
 
 #define xglue(x, y) x ## y
 #define glue(x, y) xglue(x, y)
@@ -114,27 +132,91 @@ static inline int64_t min_int64(int64_t a, int64_t b)
 /* WARNING: undefined if a = 0 */
 static inline int clz32(unsigned int a)
 {
+#ifdef _MSC_VER
+    unsigned long idx;
+    _BitScanReverse(&idx, a);
+    return 31 ^ idx;
+#else
     return __builtin_clz(a);
+#endif
 }
 
 /* WARNING: undefined if a = 0 */
 static inline int clz64(uint64_t a)
 {
+#ifdef _MSC_VER
+  unsigned long where;
+  // BitScanReverse scans from MSB to LSB for first set bit.
+  // Returns 0 if no set bit is found.
+#if INTPTR_MAX >= INT64_MAX // 64-bit
+  if (_BitScanReverse64(&where, a))
+    return (int)(63 - where);
+#else
+  // Scan the high 32 bits.
+  if (_BitScanReverse(&where, (uint32_t)(a >> 32)))
+    return (int)(63 - (where + 32)); // Create a bit offset from the MSB.
+  // Scan the low 32 bits.
+  if (_BitScanReverse(&where, (uint32_t)(a)))
+    return (int)(63 - where);
+#endif
+  return 64; // Undefined Behavior.
+#else
   return __builtin_clzll(a);
+#endif
 }
 
 /* WARNING: undefined if a = 0 */
 static inline int ctz32(unsigned int a)
 {
+#ifdef _MSC_VER
+    unsigned long idx;
+    _BitScanForward(&idx, a);
+    return 31 ^ idx;
+#else
     return __builtin_ctz(a);
+#endif
 }
 
 /* WARNING: undefined if a = 0 */
 static inline int ctz64(uint64_t a)
 {
+#ifdef _MSC_VER
+  unsigned long where;
+  // Search from LSB to MSB for first set bit.
+  // Returns zero if no set bit is found.
+#if INTPTR_MAX >= INT64_MAX // 64-bit
+  if (_BitScanForward64(&where, a))
+    return (int)(where);
+#else
+  // Win32 doesn't have _BitScanForward64 so emulate it with two 32 bit calls.
+  // Scan the Low Word.
+  if (_BitScanForward(&where, (uint32_t)(a)))
+    return (int)(where);
+  // Scan the High Word.
+  if (_BitScanForward(&where, (uint32_t)(a >> 32)))
+    return (int)(where + 32); // Create a bit offset from the LSB.
+#endif
+  return 64;
+#else
   return __builtin_ctzll(a);
+#endif
 }
 
+#ifdef _MSC_VER
+#pragma pack(push, 1)
+struct packed_u64 {
+    uint64_t v;
+};
+
+struct packed_u32 {
+    uint32_t v;
+};
+
+struct packed_u16 {
+    uint16_t v;
+};
+#pragma pack(pop)
+#else
 struct __attribute__((packed)) packed_u64 {
     uint64_t v;
 };
@@ -146,6 +228,7 @@ struct __attribute__((packed)) packed_u32 {
 struct __attribute__((packed)) packed_u16 {
     uint16_t v;
 };
+#endif
 
 static inline uint64_t get_u64(const uint8_t *tab)
 {

libregexp.c

@@ -465,7 +465,7 @@ static int parse_digits(const uint8_t **pp, BOOL allow_overflow)
         p++;
     }
     *pp = p;
-    return v;
+    return (int)v;
 }
 
 static int re_parse_expect(REParseState *s, const uint8_t **pp, int c)

premake5.lua

@@ -0,0 +1,107 @@
+
+-----------------------------------------------------------------------------------------------------------------------
+
+(function()
+  -- generate "quickjs-version.h" using VERSION file
+  local file = io.open("VERSION", "r")
+  local vers = file:read()
+  file:close()
+  vars = vers:gsub("%s+", "")
+  file = io.open("quickjs-version.h", "w+")
+  file:write("#define QUICKJS_VERSION \"" .. vers .. "\"\r\n")
+  file:close()
+end)()  
+
+
+workspace "quickjs-msvc"
+	-- Premake output folder
+	location(path.join(".build", _ACTION))
+
+	platforms { "x86", "x64", "arm32", "arm64"  } 
+
+	-- Configuration settings
+	configurations { "Debug", "Release" }
+
+	filter "platforms:x86"
+  	architecture "x86"
+	filter "platforms:x64"
+  	architecture "x86_64"  
+	filter "platforms:arm32"
+  	architecture "ARM"  
+	filter "platforms:arm64"
+  	architecture "ARM64"  
+
+	filter "system:windows"
+  	removeplatforms { "arm32" }  
+
+	-- Debug configuration
+	filter { "configurations:Debug" }
+		defines { "DEBUG" }
+		symbols "On"
+		optimize "Off"
+
+	-- Release configuration
+	filter { "configurations:Release" }
+		defines { "NDEBUG" }
+		optimize "Speed"
+		inlining "Auto"
+
+	filter { "language:not C#" }
+		defines { "_CRT_SECURE_NO_WARNINGS" }
+		buildoptions { "/std:c++latest" }
+		systemversion "latest"
+
+	filter { }
+		targetdir ".bin/%{cfg.longname}/"
+		exceptionhandling "Off"
+		rtti "Off"
+		--vectorextensions "AVX2"
+
+-----------------------------------------------------------------------------------------------------------------------
+
+project "quickjs"
+	language "C"
+	kind "StaticLib"
+	files {
+    "cutils.h",
+		"cutils.c",
+		"libregexp.c",
+		"libunicode.c",
+		"quickjs.c",
+		"quickjs-libc.c",
+		"libregexp.h",
+		"libregexp-opcode.h",
+		"libunicode.h",
+		"libunicode-table.h",
+		"list.h",
+		"quickjs.h",
+		"quickjs-atom.h",
+		"quickjs-libc.h",
+		"quickjs-opcode.h"
+	}
+
+-----------------------------------------------------------------------------------------------------------------------
+
+project "qjsc"
+	language "C"
+	kind "ConsoleApp"
+	links { "quickjs" }
+	files {
+		"qjsc.c"
+	}
+
+-----------------------------------------------------------------------------------------------------------------------
+
+project "qjs"
+	language "C"
+	kind "ConsoleApp"
+	links { "quickjs" }
+	dependson { "qjsc" }
+	files {
+		"qjs.c",
+		"repl.js",
+		"repl.c"
+	}
+
+-- Compile repl.js and save bytecode into repl.c
+prebuildcommands { "\"%{cfg.buildtarget.directory}/qjsc.exe\" -c -o \"../../repl.c\" -m \"../../repl.js\"" }

qjs.c

@@ -28,18 +28,20 @@
 #include <inttypes.h>
 #include <string.h>
 #include <assert.h>
-#include <unistd.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <time.h>
 #if defined(__APPLE__)
 #include <malloc/malloc.h>
+#include <unistd.h>
 #elif defined(__linux__)
 #include <malloc.h>
+#include <unistd.h>
 #endif
 
 #include "cutils.h"
 #include "quickjs-libc.h"
+#include "quickjs-version.h"
 
 extern const uint8_t qjsc_repl[];
 extern const uint32_t qjsc_repl_size;
@@ -276,7 +278,7 @@ static const JSMallocFunctions trace_mf = {
 
 void help(void)
 {
-    printf("QuickJS version " CONFIG_VERSION "\n"
+    printf("QuickJS version " QUICKJS_VERSION "\n"
            "usage: " PROG_NAME " [options] [file [args]]\n"
            "-h  --help         list options\n"
            "-e  --eval EXPR    evaluate EXPR\n"
@@ -448,8 +450,10 @@ int main(int argc, char **argv)
         }
     }
 
+#ifdef CONFIG_BIGNUM
     if (load_jscalc)
         bignum_ext = 1;
+#endif
 
     if (trace_memory) {
         js_trace_malloc_init(&trace_data);

qjsc.c

@@ -27,14 +27,17 @@
 #include <inttypes.h>
 #include <string.h>
 #include <assert.h>
-#include <unistd.h>
 #include <errno.h>
 #if !defined(_WIN32)
 #include <sys/wait.h>
+  #include <unistd.h>
+#else
+  #include "win/getopt.h"
 #endif
 
 #include "cutils.h"
 #include "quickjs-libc.h"
+#include "quickjs-version.h"
 
 typedef struct {
     char *name;
@@ -341,7 +344,7 @@ static const char main_c_template2[] =
 
 void help(void)
 {
-    printf("QuickJS Compiler version " CONFIG_VERSION "\n"
+    printf("QuickJS Compiler version " QUICKJS_VERSION "\n"
            "usage: " PROG_NAME " [options] [files]\n"
            "\n"
            "options are:\n"

quickjs-libc.c

@@ -28,20 +28,30 @@
 #include <inttypes.h>
 #include <string.h>
 #include <assert.h>
-#include <unistd.h>
 #include <errno.h>
 #include <fcntl.h>
-#include <sys/time.h>
 #include <time.h>
 #include <signal.h>
 #include <limits.h>
 #include <sys/stat.h>
-#include <dirent.h>
 #if defined(_WIN32)
   #include <windows.h>
   #include <conio.h>
-#include <utime.h>
+  #include <io.h>
+  #include <fcntl.h>
+  #include <sys/types.h>
+  #include <sys/stat.h>
+  #include <sys/utime.h>
+  #include "win/dirent.h"
+  #ifndef PATH_MAX
+    #define PATH_MAX MAX_PATH
+  #endif
+  #define popen _popen
+  #define pclose _pclose
 #else
+  #include <dirent.h>
+  #include <unistd.h>
+  #include <sys/time.h>
 #include <dlfcn.h>
 #include <termios.h>
 #include <sys/ioctl.h>

quickjs-version.h

@@ -0,0 +1 @@
+#define QUICKJS_VERSION "2020-09-06"

quickjs.c

@@ -28,14 +28,15 @@
 #include <inttypes.h>
 #include <string.h>
 #include <assert.h>
-#include <sys/time.h>
 #include <time.h>
 #include <fenv.h>
 #include <math.h>
 #if defined(__APPLE__)
 #include <malloc/malloc.h>
+#include <sys/time.h>
 #elif defined(__linux__)
 #include <malloc.h>
+#include <sys/time.h>
 #endif
 
 #include "cutils.h"
@@ -48,7 +49,7 @@
 
 #define OPTIMIZE         1
 #define SHORT_OPCODES    1
-#if defined(EMSCRIPTEN)
+#if defined(EMSCRIPTEN) || defined(_MSC_VER)
 #define DIRECT_DISPATCH  0
 #else
 #define DIRECT_DISPATCH  1
@@ -67,11 +68,11 @@
 
 /* define to include Atomics.* operations which depend on the OS
    threads */
-#if !defined(EMSCRIPTEN)
+#if !defined(EMSCRIPTEN) && !defined(_MSC_VER)
 #define CONFIG_ATOMICS
 #endif
 
-#if !defined(EMSCRIPTEN)
+#if !defined(EMSCRIPTEN) && !defined(_MSC_VER)
 /* enable stack limitation */
 #define CONFIG_STACK_CHECK
 #endif
@@ -6157,7 +6158,7 @@ void JS_DumpMemoryUsage(FILE *fp, const JSMemoryUsage *s, JSRuntime *rt)
 #ifdef CONFIG_BIGNUM
             "BigNum "
 #endif
-            CONFIG_VERSION " version, %d-bit, malloc limit: %"PRId64"\n\n",
+            QUICKJS_VERSION " version, %d-bit, malloc limit: %"PRId64"\n\n",
             (int)sizeof(void *) * 8, (int64_t)(ssize_t)s->malloc_limit);
 #if 1
     if (rt) {
@@ -10164,7 +10165,11 @@ static JSValue js_atof(JSContext *ctx, const char *str, const char **pp,
             } else
 #endif
             {
+#ifdef _MSC_VER
+                double d = INFINITY;
+#else
                 double d = 1.0 / 0.0;
+#endif 
                 if (is_neg)
                     d = -d;
                 val = JS_NewFloat64(ctx, d);
@@ -41345,7 +41350,7 @@ static JSValue js_math_min_max(JSContext *ctx, JSValueConst this_val,
     uint32_t tag;
 
     if (unlikely(argc == 0)) {
-        return __JS_NewFloat64(ctx, is_max ? -1.0 / 0.0 : 1.0 / 0.0);
+        return __JS_NewFloat64(ctx, is_max ? -INFINITY : INFINITY);
     }
 
     tag = JS_VALUE_GET_TAG(argv[0]);

quickjs.h

@@ -27,6 +27,7 @@
 
 #include <stdio.h>
 #include <stdint.h>
+#include "quickjs-version.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -517,9 +518,9 @@ static js_force_inline JSValue JS_NewInt64(JSContext *ctx, int64_t val)
 {
     JSValue v;
     if (val == (int32_t)val) {
-        v = JS_NewInt32(ctx, val);
+        v = JS_NewInt32(ctx, (int32_t)val);
     } else {
-        v = __JS_NewFloat64(ctx, val);
+        v = __JS_NewFloat64(ctx, (double)val);
     }
     return v;
 }

win/getopt.h

@@ -0,0 +1,653 @@
+#ifndef __GETOPT_H__
+/**
+ * DISCLAIMER
+ * This file is part of the mingw-w64 runtime package.
+ *
+ * The mingw-w64 runtime package and its code is distributed in the hope that it 
+ * will be useful but WITHOUT ANY WARRANTY.  ALL WARRANTIES, EXPRESSED OR 
+ * IMPLIED ARE HEREBY DISCLAIMED.  This includes but is not limited to 
+ * warranties of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ */
+ /*
+ * Copyright (c) 2002 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Sponsored in part by the Defense Advanced Research Projects
+ * Agency (DARPA) and Air Force Research Laboratory, Air Force
+ * Materiel Command, USAF, under agreement number F39502-99-1-0512.
+ */
+/*-
+ * Copyright (c) 2000 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Dieter Baron and Thomas Klausner.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma warning(disable:4996)
+
+#define __GETOPT_H__
+
+/* All the headers include this file. */
+#include <crtdefs.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <windows.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define REPLACE_GETOPT    /* use this getopt as the system getopt(3) */
+
+#ifdef REPLACE_GETOPT
+int opterr = 1;   /* if error message should be printed */
+int optind = 1;   /* index into parent argv vector */
+int optopt = '?';   /* character checked for validity */
+#undef  optreset    /* see getopt.h */
+#define optreset    __mingw_optreset
+int optreset;   /* reset getopt */
+char    *optarg;    /* argument associated with option */
+#endif
+
+//extern int optind;    /* index of first non-option in argv      */
+//extern int optopt;    /* single option character, as parsed     */
+//extern int opterr;    /* flag to enable built-in diagnostics... */
+//        /* (user may set to zero, to suppress)    */
+//
+//extern char *optarg;    /* pointer to argument of current option  */
+
+#define PRINT_ERROR ((opterr) && (*options != ':'))
+
+#define FLAG_PERMUTE  0x01  /* permute non-options to the end of argv */
+#define FLAG_ALLARGS  0x02  /* treat non-options as args to option "-1" */
+#define FLAG_LONGONLY 0x04  /* operate as getopt_long_only */
+
+/* return values */
+#define BADCH   (int)'?'
+#define BADARG    ((*options == ':') ? (int)':' : (int)'?')
+#define INORDER   (int)1
+
+#ifndef __CYGWIN__
+#define __progname __argv[0]
+#else
+extern char __declspec(dllimport) *__progname;
+#endif
+
+#ifdef __CYGWIN__
+static char EMSG[] = "";
+#else
+#define EMSG    ""
+#endif
+
+static int getopt_internal(int, char * const *, const char *,
+         const struct option *, int *, int);
+static int parse_long_options(char * const *, const char *,
+            const struct option *, int *, int);
+static int gcd(int, int);
+static void permute_args(int, int, int, char * const *);
+
+static char *place = EMSG; /* option letter processing */
+
+/* XXX: set optreset to 1 rather than these two */
+static int nonopt_start = -1; /* first non option argument (for permute) */
+static int nonopt_end = -1;   /* first option after non options (for permute) */
+
+/* Error messages */
+static const char recargchar[] = "option requires an argument -- %c";
+static const char recargstring[] = "option requires an argument -- %s";
+static const char ambig[] = "ambiguous option -- %.*s";
+static const char noarg[] = "option doesn't take an argument -- %.*s";
+static const char illoptchar[] = "unknown option -- %c";
+static const char illoptstring[] = "unknown option -- %s";
+
+static void
+_vwarnx(const char *fmt,va_list ap)
+{
+  (void)fprintf(stderr,"%s: ",__progname);
+  if (fmt != NULL)
+    (void)vfprintf(stderr,fmt,ap);
+  (void)fprintf(stderr,"\n");
+}
+
+static void
+warnx(const char *fmt,...)
+{
+  va_list ap;
+  va_start(ap,fmt);
+  _vwarnx(fmt,ap);
+  va_end(ap);
+}
+
+/*
+ * Compute the greatest common divisor of a and b.
+ */
+static int
+gcd(int a, int b)
+{
+  int c;
+
+  c = a % b;
+  while (c != 0) {
+    a = b;
+    b = c;
+    c = a % b;
+  }
+
+  return (b);
+}
+
+/*
+ * Exchange the block from nonopt_start to nonopt_end with the block
+ * from nonopt_end to opt_end (keeping the same order of arguments
+ * in each block).
+ */
+static void
+permute_args(int panonopt_start, int panonopt_end, int opt_end,
+  char * const *nargv)
+{
+  int cstart, cyclelen, i, j, ncycle, nnonopts, nopts, pos;
+  char *swap;
+
+  /*
+   * compute lengths of blocks and number and size of cycles
+   */
+  nnonopts = panonopt_end - panonopt_start;
+  nopts = opt_end - panonopt_end;
+  ncycle = gcd(nnonopts, nopts);
+  cyclelen = (opt_end - panonopt_start) / ncycle;
+
+  for (i = 0; i < ncycle; i++) {
+    cstart = panonopt_end+i;
+    pos = cstart;
+    for (j = 0; j < cyclelen; j++) {
+      if (pos >= panonopt_end)
+        pos -= nnonopts;
+      else
+        pos += nopts;
+      swap = nargv[pos];
+      /* LINTED const cast */
+      ((char **) nargv)[pos] = nargv[cstart];
+      /* LINTED const cast */
+      ((char **)nargv)[cstart] = swap;
+    }
+  }
+}
+
+#ifdef REPLACE_GETOPT
+/*
+ * getopt --
+ *  Parse argc/argv argument vector.
+ *
+ * [eventually this will replace the BSD getopt]
+ */
+int
+getopt(int nargc, char * const *nargv, const char *options)
+{
+
+  /*
+   * We don't pass FLAG_PERMUTE to getopt_internal() since
+   * the BSD getopt(3) (unlike GNU) has never done this.
+   *
+   * Furthermore, since many privileged programs call getopt()
+   * before dropping privileges it makes sense to keep things
+   * as simple (and bug-free) as possible.
+   */
+  return (getopt_internal(nargc, nargv, options, NULL, NULL, 0));
+}
+#endif /* REPLACE_GETOPT */
+
+//extern int getopt(int nargc, char * const *nargv, const char *options);
+
+#ifdef _BSD_SOURCE
+/*
+ * BSD adds the non-standard `optreset' feature, for reinitialisation
+ * of `getopt' parsing.  We support this feature, for applications which
+ * proclaim their BSD heritage, before including this header; however,
+ * to maintain portability, developers are advised to avoid it.
+ */
+# define optreset  __mingw_optreset
+extern int optreset;
+#endif
+#ifdef __cplusplus
+}
+#endif
+/*
+ * POSIX requires the `getopt' API to be specified in `unistd.h';
+ * thus, `unistd.h' includes this header.  However, we do not want
+ * to expose the `getopt_long' or `getopt_long_only' APIs, when
+ * included in this manner.  Thus, close the standard __GETOPT_H__
+ * declarations block, and open an additional __GETOPT_LONG_H__
+ * specific block, only when *not* __UNISTD_H_SOURCED__, in which
+ * to declare the extended API.
+ */
+#endif /* !defined(__GETOPT_H__) */
+
+#if !defined(__UNISTD_H_SOURCED__) && !defined(__GETOPT_LONG_H__)
+#define __GETOPT_LONG_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct option   /* specification for a long form option...  */
+{
+  const char *name;   /* option name, without leading hyphens */
+  int         has_arg;    /* does it take an argument?    */
+  int        *flag;   /* where to save its status, or NULL  */
+  int         val;    /* its associated status value    */
+};
+
+enum        /* permitted values for its `has_arg' field...  */
+{
+  no_argument = 0,        /* option never takes an argument */
+  required_argument,    /* option always requires an argument */
+  optional_argument   /* option may take an argument    */
+};
+
+/*
+ * parse_long_options --
+ *  Parse long options in argc/argv argument vector.
+ * Returns -1 if short_too is set and the option does not match long_options.
+ */
+static int
+parse_long_options(char * const *nargv, const char *options,
+  const struct option *long_options, int *idx, int short_too)
+{
+  char *current_argv, *has_equal;
+  size_t current_argv_len;
+  int i, ambiguous, match;
+
+#define IDENTICAL_INTERPRETATION(_x, _y)                                \
+  (long_options[(_x)].has_arg == long_options[(_y)].has_arg &&    \
+   long_options[(_x)].flag == long_options[(_y)].flag &&          \
+   long_options[(_x)].val == long_options[(_y)].val)
+
+  current_argv = place;
+  match = -1;
+  ambiguous = 0;
+
+  optind++;
+
+  if ((has_equal = strchr(current_argv, '=')) != NULL) {
+    /* argument found (--option=arg) */
+    current_argv_len = has_equal - current_argv;
+    has_equal++;
+  } else
+    current_argv_len = strlen(current_argv);
+
+  for (i = 0; long_options[i].name; i++) {
+    /* find matching long option */
+    if (strncmp(current_argv, long_options[i].name,
+        current_argv_len))
+      continue;
+
+    if (strlen(long_options[i].name) == current_argv_len) {
+      /* exact match */
+      match = i;
+      ambiguous = 0;
+      break;
+    }
+    /*
+     * If this is a known short option, don't allow
+     * a partial match of a single character.
+     */
+    if (short_too && current_argv_len == 1)
+      continue;
+
+    if (match == -1)  /* partial match */
+      match = i;
+    else if (!IDENTICAL_INTERPRETATION(i, match))
+      ambiguous = 1;
+  }
+  if (ambiguous) {
+    /* ambiguous abbreviation */
+    if (PRINT_ERROR)
+      warnx(ambig, (int)current_argv_len,
+           current_argv);
+    optopt = 0;
+    return (BADCH);
+  }
+  if (match != -1) {    /* option found */
+    if (long_options[match].has_arg == no_argument
+        && has_equal) {
+      if (PRINT_ERROR)
+        warnx(noarg, (int)current_argv_len,
+             current_argv);
+      /*
+       * XXX: GNU sets optopt to val regardless of flag
+       */
+      if (long_options[match].flag == NULL)
+        optopt = long_options[match].val;
+      else
+        optopt = 0;
+      return (BADARG);
+    }
+    if (long_options[match].has_arg == required_argument ||
+        long_options[match].has_arg == optional_argument) {
+      if (has_equal)
+        optarg = has_equal;
+      else if (long_options[match].has_arg ==
+          required_argument) {
+        /*
+         * optional argument doesn't use next nargv
+         */
+        optarg = nargv[optind++];
+      }
+    }
+    if ((long_options[match].has_arg == required_argument)
+        && (optarg == NULL)) {
+      /*
+       * Missing argument; leading ':' indicates no error
+       * should be generated.
+       */
+      if (PRINT_ERROR)
+        warnx(recargstring,
+            current_argv);
+      /*
+       * XXX: GNU sets optopt to val regardless of flag
+       */
+      if (long_options[match].flag == NULL)
+        optopt = long_options[match].val;
+      else
+        optopt = 0;
+      --optind;
+      return (BADARG);
+    }
+  } else {      /* unknown option */
+    if (short_too) {
+      --optind;
+      return (-1);
+    }
+    if (PRINT_ERROR)
+      warnx(illoptstring, current_argv);
+    optopt = 0;
+    return (BADCH);
+  }
+  if (idx)
+    *idx = match;
+  if (long_options[match].flag) {
+    *long_options[match].flag = long_options[match].val;
+    return (0);
+  } else
+    return (long_options[match].val);
+#undef IDENTICAL_INTERPRETATION
+}
+
+/*
+ * getopt_internal --
+ *  Parse argc/argv argument vector.  Called by user level routines.
+ */
+static int
+getopt_internal(int nargc, char * const *nargv, const char *options,
+  const struct option *long_options, int *idx, int flags)
+{
+  char *oli;        /* option letter list index */
+  int optchar, short_too;
+  static int posixly_correct = -1;
+
+  if (options == NULL)
+    return (-1);
+
+  /*
+   * XXX Some GNU programs (like cvs) set optind to 0 instead of
+   * XXX using optreset.  Work around this braindamage.
+   */
+  if (optind == 0)
+    optind = optreset = 1;
+
+  /*
+   * Disable GNU extensions if POSIXLY_CORRECT is set or options
+   * string begins with a '+'.
+   *
+   * CV, 2009-12-14: Check POSIXLY_CORRECT anew if optind == 0 or
+   *                 optreset != 0 for GNU compatibility.
+   */
+  if (posixly_correct == -1 || optreset != 0)
+    posixly_correct = (getenv("POSIXLY_CORRECT") != NULL);
+  if (*options == '-')
+    flags |= FLAG_ALLARGS;
+  else if (posixly_correct || *options == '+')
+    flags &= ~FLAG_PERMUTE;
+  if (*options == '+' || *options == '-')
+    options++;
+
+  optarg = NULL;
+  if (optreset)
+    nonopt_start = nonopt_end = -1;
+start:
+  if (optreset || !*place) {    /* update scanning pointer */
+    optreset = 0;
+    if (optind >= nargc) {          /* end of argument vector */
+      place = EMSG;
+      if (nonopt_end != -1) {
+        /* do permutation, if we have to */
+        permute_args(nonopt_start, nonopt_end,
+            optind, nargv);
+        optind -= nonopt_end - nonopt_start;
+      }
+      else if (nonopt_start != -1) {
+        /*
+         * If we skipped non-options, set optind
+         * to the first of them.
+         */
+        optind = nonopt_start;
+      }
+      nonopt_start = nonopt_end = -1;
+      return (-1);
+    }
+    if (*(place = nargv[optind]) != '-' ||
+        (place[1] == '\0' && strchr(options, '-') == NULL)) {
+      place = EMSG;   /* found non-option */
+      if (flags & FLAG_ALLARGS) {
+        /*
+         * GNU extension:
+         * return non-option as argument to option 1
+         */
+        optarg = nargv[optind++];
+        return (INORDER);
+      }
+      if (!(flags & FLAG_PERMUTE)) {
+        /*
+         * If no permutation wanted, stop parsing
+         * at first non-option.
+         */
+        return (-1);
+      }
+      /* do permutation */
+      if (nonopt_start == -1)
+        nonopt_start = optind;
+      else if (nonopt_end != -1) {
+        permute_args(nonopt_start, nonopt_end,
+            optind, nargv);
+        nonopt_start = optind -
+            (nonopt_end - nonopt_start);
+        nonopt_end = -1;
+      }
+      optind++;
+      /* process next argument */
+      goto start;
+    }
+    if (nonopt_start != -1 && nonopt_end == -1)
+      nonopt_end = optind;
+
+    /*
+     * If we have "-" do nothing, if "--" we are done.
+     */
+    if (place[1] != '\0' && *++place == '-' && place[1] == '\0') {
+      optind++;
+      place = EMSG;
+      /*
+       * We found an option (--), so if we skipped
+       * non-options, we have to permute.
+       */
+      if (nonopt_end != -1) {
+        permute_args(nonopt_start, nonopt_end,
+            optind, nargv);
+        optind -= nonopt_end - nonopt_start;
+      }
+      nonopt_start = nonopt_end = -1;
+      return (-1);
+    }
+  }
+
+  /*
+   * Check long options if:
+   *  1) we were passed some
+   *  2) the arg is not just "-"
+   *  3) either the arg starts with -- we are getopt_long_only()
+   */
+  if (long_options != NULL && place != nargv[optind] &&
+      (*place == '-' || (flags & FLAG_LONGONLY))) {
+    short_too = 0;
+    if (*place == '-')
+      place++;    /* --foo long option */
+    else if (*place != ':' && strchr(options, *place) != NULL)
+      short_too = 1;    /* could be short option too */
+
+    optchar = parse_long_options(nargv, options, long_options,
+        idx, short_too);
+    if (optchar != -1) {
+      place = EMSG;
+      return (optchar);
+    }
+  }
+
+  if ((optchar = (int)*place++) == (int)':' ||
+      (optchar == (int)'-' && *place != '\0') ||
+      (oli = (char*)strchr(options, optchar)) == NULL) {
+    /*
+     * If the user specified "-" and  '-' isn't listed in
+     * options, return -1 (non-option) as per POSIX.
+     * Otherwise, it is an unknown option character (or ':').
+     */
+    if (optchar == (int)'-' && *place == '\0')
+      return (-1);
+    if (!*place)
+      ++optind;
+    if (PRINT_ERROR)
+      warnx(illoptchar, optchar);
+    optopt = optchar;
+    return (BADCH);
+  }
+  if (long_options != NULL && optchar == 'W' && oli[1] == ';') {
+    /* -W long-option */
+    if (*place)     /* no space */
+      /* NOTHING */;
+    else if (++optind >= nargc) { /* no arg */
+      place = EMSG;
+      if (PRINT_ERROR)
+        warnx(recargchar, optchar);
+      optopt = optchar;
+      return (BADARG);
+    } else        /* white space */
+      place = nargv[optind];
+    optchar = parse_long_options(nargv, options, long_options,
+        idx, 0);
+    place = EMSG;
+    return (optchar);
+  }
+  if (*++oli != ':') {      /* doesn't take argument */
+    if (!*place)
+      ++optind;
+  } else {        /* takes (optional) argument */
+    optarg = NULL;
+    if (*place)     /* no white space */
+      optarg = place;
+    else if (oli[1] != ':') { /* arg not optional */
+      if (++optind >= nargc) {  /* no arg */
+        place = EMSG;
+        if (PRINT_ERROR)
+          warnx(recargchar, optchar);
+        optopt = optchar;
+        return (BADARG);
+      } else
+        optarg = nargv[optind];
+    }
+    place = EMSG;
+    ++optind;
+  }
+  /* dump back option letter */
+  return (optchar);
+}
+
+/*
+ * getopt_long --
+ *  Parse argc/argv argument vector.
+ */
+int
+getopt_long(int nargc, char * const *nargv, const char *options,
+    const struct option *long_options, int *idx)
+{
+
+  return (getopt_internal(nargc, nargv, options, long_options, idx,
+      FLAG_PERMUTE));
+}
+
+/*
+ * getopt_long_only --
+ *  Parse argc/argv argument vector.
+ */
+int
+getopt_long_only(int nargc, char * const *nargv, const char *options,
+    const struct option *long_options, int *idx)
+{
+
+  return (getopt_internal(nargc, nargv, options, long_options, idx,
+      FLAG_PERMUTE|FLAG_LONGONLY));
+}
+
+//extern int getopt_long(int nargc, char * const *nargv, const char *options,
+//    const struct option *long_options, int *idx);
+//extern int getopt_long_only(int nargc, char * const *nargv, const char *options,
+//    const struct option *long_options, int *idx);
+/*
+ * Previous MinGW implementation had...
+ */
+#ifndef HAVE_DECL_GETOPT
+/*
+ * ...for the long form API only; keep this for compatibility.
+ */
+# define HAVE_DECL_GETOPT 1
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* !defined(__UNISTD_H_SOURCED__) && !defined(__GETOPT_LONG_H__) */

win/premake-vs2017.bat

@@ -0,0 +1,4 @@
+cd ..
+premake5 vs2017
+cd .build
+start vs2017\quickjs-msvc.sln

win/premake-vs2019.bat

@@ -0,0 +1,4 @@
+cd ..
+premake5 vs2019
+cd .build
+start vs2019\quickjs-msvc.sln