Source/Modules/main.cxx

/* -----------------------------------------------------------------------------
 * This file is part of SWIG, which is licensed as a whole under version 3 
 * (or any later version) of the GNU General Public License. Some additional
 * terms also apply to certain portions of SWIG. The full details of the SWIG
 * license and copyrights can be found in the LICENSE and COPYRIGHT files
 * included with the SWIG source code as distributed by the SWIG developers
 * and at https://www.swig.org/legal.html.
 *
 * main.cxx
 *
 * Main entry point to the SWIG core.
 * ----------------------------------------------------------------------------- */

#include "swigconfig.h"

#if defined(_WIN32)
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#endif

#include "swigmod.h"

#include "swigwarn.h"
#include "cparse.h"
#include <ctype.h>
#include <errno.h>
#include <limits.h>		// for INT_MAX

// Global variables

static Language *lang = 0;	// Language method
int CPlusPlus = 0;
int Extend = 0;			// Extend flag
int ForceExtern = 0;		// Force extern mode
int Verbose = 0;
int AddExtern = 0;
int NoExcept = 0;
extern "C" {
  int UseWrapperSuffix = 0;	// If 1, append suffix to non-overloaded functions too.
}

/* Suppress warning messages for private inheritance, etc by default.
   These are enabled by command line option -Wextra.

   WARN_PARSE_PRIVATE_INHERIT                   309
   WARN_PARSE_BUILTIN_NAME                      321
   WARN_PARSE_REDUNDANT                         322
   WARN_TYPE_ABSTRACT                           403
   WARN_TYPE_RVALUE_REF_QUALIFIER_IGNORED       405
   WARN_LANG_OVERLOAD_CONST                     512
 */
#define EXTRA_WARNINGS "309,403,405,512,321,322"

extern "C" {
  extern String *ModuleName;
  extern int ignore_nested_classes;
  extern int kwargs_supported;
}

/* usage string split into multiple parts otherwise string is too big for some compilers */
/* naming conventions for commandline options - no underscores, no capital letters, join words together
 * except when using a common prefix, then use '-' to separate, eg the debug-xxx options */
static const char *usage1 = "\
\nGeneral Options\n\
     -addextern      - Add extra extern declarations\n\
     -c++            - Enable C++ processing\n\
     -co <file>      - Check <file> out of the SWIG library\n\
     -copyctor       - Automatically generate copy constructors wherever possible\n\
     -cpperraswarn   - Treat the preprocessor #error statement as #warning (default)\n\
     -cppext <ext>   - Change file extension of generated C++ files to <ext>\n\
                       (default is cxx)\n\
     -copyright      - Display copyright notices\n\
     -debug-classes  - Display information about the classes found in the interface\n\
     -debug-module <n>- Display module parse tree at stages 1-4, <n> is a csv list of stages\n\
     -debug-symtabs  - Display symbol tables information\n\
     -debug-symbols  - Display target language symbols in the symbol tables\n\
     -debug-csymbols - Display C symbols in the symbol tables\n\
     -debug-lsymbols - Display target language layer symbols\n\
     -debug-quiet    - Display less parse tree node debug info when using other -debug options\n\
     -debug-tags     - Display information about the tags found in the interface\n\
     -debug-template - Display information for debugging templates\n\
     -debug-top <n>  - Display entire parse tree at stages 1-4, <n> is a csv list of stages\n\
     -debug-typedef  - Display information about the types and typedefs in the interface\n\
     -debug-typemap  - Display typemap debugging information\n\
     -debug-tmsearch - Display typemap search debugging information\n\
     -debug-tmused   - Display typemaps used debugging information\n\
     -directors      - Turn on director mode for all the classes, mainly for testing\n\
     -dirprot        - Turn on wrapping of protected members for director classes (default)\n\
     -D<symbol>[=<value>] - Define symbol <symbol> (for conditional compilation)\n\
";

static const char *usage2 = "\
     -E              - Preprocess only, does not generate wrapper code\n\
     -external-runtime [file] - Export the SWIG runtime stack\n\
     -fakeversion <v>- Make SWIG fake the program version number to <v>\n\
     -fcompact       - Compile in compact mode\n\
     -features <list>- Set global features, where <list> is a comma separated list of\n\
                       features, eg -features directors,autodoc=1\n\
                       If no explicit value is given to the feature, a default of 1 is used\n\
     -fastdispatch   - Enable fast dispatch mode to produce faster overload dispatcher code\n\
     -Fmicrosoft     - Display error/warning messages in Microsoft format\n\
     -Fstandard      - Display error/warning messages in commonly used format\n\
     -fvirtual       - Compile in virtual elimination mode\n\
     -help           - Display help\n\
     -I-             - Don't search the current directory\n\
     -I<dir>         - Look for SWIG files in directory <dir>\n\
     -ignoremissing  - Ignore missing include files\n\
     -importall      - Follow all #include statements as imports\n\
     -includeall     - Follow all #include statements\n\
     -l<ifile>       - Include SWIG library file <ifile>\n\
";

static const char *usage3 = "\
     -macroerrors    - Report errors inside macros\n\
     -M              - List all dependencies\n\
     -MD             - Is equivalent to `-M -MF <file>', except `-E' is not implied\n\
     -MF <file>      - Generate dependencies into <file> and continue generating wrappers\n\
     -MM             - List dependencies, but omit files in SWIG library\n\
     -MMD            - Like `-MD', but omit files in SWIG library\n\
     -module <name>  - Set module name to <name>\n\
     -MP             - Generate phony targets for all dependencies\n\
     -MT <target>    - Set the target of the rule emitted by dependency generation\n\
     -nocontract     - Turn off contract checking\n\
     -nocpperraswarn - Do not treat the preprocessor #error statement as #warning\n\
     -nodefaultctor  - Do not generate implicit default constructors\n\
     -nodefaultdtor  - Do not generate implicit default destructors\n\
     -nodirprot      - Do not wrap director protected members\n\
     -noexcept       - Do not wrap exception specifiers\n\
     -nofastdispatch - Disable fast dispatch mode (default)\n\
     -nopreprocess   - Skip the preprocessor step\n\
     -notemplatereduce - Disable reduction of the typedefs in templates\n\
";

static const char *usage4 = "\
     -O              - Enable the optimization options:\n\
                        -fastdispatch -fvirtual\n\
     -o <outfile>    - Set name of C/C++ output file to <outfile>\n\
     -oh <headfile>  - Set name of C++ output header file for directors to <headfile>\n\
     -outcurrentdir  - Set default output dir to current dir instead of input file's path\n\
     -outdir <dir>   - Set language specific files output directory to <dir>\n\
     -pcreversion    - Display PCRE2 version information\n\
     -small          - Compile in virtual elimination and compact mode\n\
     -std=<standard> - Set the C or C++ language <standard> for inputs\n\
     -swiglib        - Report location of SWIG library and exit\n\
     -templatereduce - Reduce all the typedefs in templates\n\
     -U<symbol>      - Undefine symbol <symbol>\n\
     -v              - Run in verbose mode\n\
     -version        - Display SWIG version number\n\
     -Wall           - Remove all warning suppression, also implies -Wextra\n\
     -Wallkw         - Enable keyword warnings for all the supported languages\n\
     -Werror         - Treat warnings as errors\n\
     -Wextra         - Adds the following additional warnings: " EXTRA_WARNINGS "\n\
     -w<list>        - Suppress/add warning messages, eg -w401,+321 - see Warnings.html\n\
     -xmlout <file>  - Write XML version of the parse tree to <file> after normal processing\n\
\n\
Options can also be defined using the SWIG_FEATURES environment variable, for example:\n\
\n\
  $ SWIG_FEATURES=\"-Wall\"\n\
  $ export SWIG_FEATURES\n\
  $ swig -python interface.i\n\
\n\
is equivalent to:\n\
\n\
  $ swig -Wall -python interface.i\n\
\n\
Arguments may also be passed in a file, separated by whitespace. For example:\n\
\n\
  $ echo \"-Wall -python interface.i\" > args.txt\n\
  $ swig @args.txt\n\
\n";

// Local variables
static String *LangSubDir = 0; // Target language library subdirectory
static String *SwigLib = 0; // Library directory
static String *SwigLibWinUnix = 0; // Extra library directory on Windows
static int freeze = 0;
static String *lang_config = 0;
static const char *hpp_extension = "h";
static const char *cpp_extension = "cxx";
static const char *depends_extension = "d";
static String *outdir = 0;
static String *xmlout = 0;
static int outcurrentdir = 0;
static int help = 0;
static int checkout = 0;
static int cpp_only = 0;
static int no_cpp = 0;
static String *outfile_name = 0;
static String *outfile_name_h = 0;
static int tm_debug = 0;
static int dump_symtabs = 0;
static int dump_symbols = 0;
static int dump_csymbols = 0;
static int dump_lang_symbols = 0;
static int dump_tags = 0;
static int dump_module = 0;
static int dump_top = 0;
static int dump_typedef = 0;
static int dump_classes = 0;
static int werror = 0;
static int depend = 0;
static int depend_only = 0;
static int depend_phony = 0;
static int memory_debug = 0;
static int allkw = 0;
static DOH *cpps = 0;
static String *dependencies_file = 0;
static String *dependencies_target = 0;
static int external_runtime = 0;
static String *external_runtime_name = 0;
enum { STAGE1=1, STAGE2=2, STAGE3=4, STAGE4=8, STAGEOVERFLOW=16 };
static List *libfiles = 0;
static List *all_output_files = 0;
static const char *stdcpp_define = NULL;
static const char *stdc_define = NULL;

/* -----------------------------------------------------------------------------
 * check_extension()
 *
 * Checks the extension of a file to see if we should emit extern declarations.
 * ----------------------------------------------------------------------------- */

static bool check_extension(String *filename) {
  bool wanted = false;
  const char *name = Char(filename);
  if (!name)
    return 0;
  String *extension = Swig_file_extension(name);
  const char *c = Char(extension);
  if ((strcmp(c, ".c") == 0) ||
      (strcmp(c, ".C") == 0) || (strcmp(c, ".cc") == 0) || (strcmp(c, ".cxx") == 0) || (strcmp(c, ".c++") == 0) || (strcmp(c, ".cpp") == 0)) {
    wanted = true;
  }
  Delete(extension);
  return wanted;
}

/* -----------------------------------------------------------------------------
 * decode_numbers_list()
 *
 * Decode comma separated list into a binary number of the inputs or'd together
 * eg list="1,4" will return (2^0 || 2^3) = 0x1001
 * ----------------------------------------------------------------------------- */

static unsigned int decode_numbers_list(String *numlist) {
  unsigned int decoded_number = 0;
  if (numlist) {
    List *numbers = Split(numlist, ',', INT_MAX);
    if (numbers && Len(numbers) > 0) {
      for (Iterator it = First(numbers); it.item; it = Next(it)) {
        String *numstring = it.item;
        // TODO: check that it is a number
        int number = atoi(Char(numstring));
        if (number > 0 && number <= 16) {
          decoded_number |= (1 << (number-1));
        }
      }
    }
  }
  return decoded_number;
}

/* -----------------------------------------------------------------------------
 * Sets the output directory for language specific (proxy) files from the
 * C wrapper file if not set and corrects the directory name and adds a trailing
 * file separator if necessary.
 * ----------------------------------------------------------------------------- */

static void configure_outdir(const String *c_wrapper_outfile) {

  // Use the C wrapper file's directory if the output directory has not been set by user
  if (!outdir || Len(outdir) == 0)
    outdir = Swig_file_dirname(c_wrapper_outfile);

  Swig_filename_correct(outdir);

  // Add trailing file delimiter if not present in output directory name
  if (Len(outdir) > 0) {
    const char *outd = Char(outdir);
    if (strcmp(outd + strlen(outd) - strlen(SWIG_FILE_DELIMITER), SWIG_FILE_DELIMITER) != 0)
      Printv(outdir, SWIG_FILE_DELIMITER, NIL);
  }
}

/* This function sets the name of the configuration file */
void SWIG_config_file(const_String_or_char_ptr filename) {
  lang_config = NewString(filename);
}

/* Sets the target language subdirectory name */
void SWIG_library_directory(const char *subdirectory) {
  LangSubDir = NewString(subdirectory);
}

// Returns the directory for generating language specific files (non C/C++ files)
const String *SWIG_output_directory() {
  assert(outdir);
  return outdir;
}

void SWIG_config_cppext(const char *ext) {
  cpp_extension = ext;
}

List *SWIG_output_files() {
  assert(all_output_files);
  return all_output_files;
}

static void SWIG_setfeature(const char *cfeature, const char *cvalue) {
  Hash *features_hash = Swig_cparse_features();
  String *name = NewString("");
  String *fname = NewString(cfeature);
  String *fvalue = NewString(cvalue);
  Swig_feature_set(features_hash, name, 0, fname, fvalue, 0);
  Delete(name);
  Delete(fname);
  Delete(fvalue);
}


static void SWIG_setfeatures(const char *c) {
  char feature[64];
  char *fb = feature;
  char *fe = fb + 63;
  Hash *features_hash = Swig_cparse_features();
  String *name = NewString("");
  /* Printf(stderr,"all features %s\n", c); */
  while (*c) {
    char *f = fb;
    String *fname = NewString("feature:");
    String *fvalue = NewString("");
    while ((f != fe) && *c != '=' && *c != ',' && *c) {
      *(f++) = *(c++);
    }
    *f = 0;
    Printf(fname, "%s", feature);
    if (*c && *(c++) == '=') {
      char value[64];
      char *v = value;
      char *ve = v + 63;
      while ((v != ve) && *c != ',' && *c && !isspace(*c)) {
	*(v++) = *(c++);
      }
      *v = 0;
      Printf(fvalue, "%s", value);
    } else {
      Printf(fvalue, "1");
    }
    /* Printf(stderr,"%s %s\n", fname, fvalue);  */
    Swig_feature_set(features_hash, name, 0, fname, fvalue, 0);
    Delete(fname);
    Delete(fvalue);
  }
  Delete(name);
}

/* This function handles the -external-runtime command option */
static void SWIG_dump_runtime() {
  String *outfile;
  File *runtime;
  String *s;

  outfile = external_runtime_name;
  if (!outfile) {
    outfile = lang->defaultExternalRuntimeFilename();
    if (!outfile) {
      Printf(stderr, "*** Please provide a filename for the external runtime\n");
      Exit(EXIT_FAILURE);
    }
  }

  runtime = NewFile(outfile, "w", SWIG_output_files());
  if (!runtime) {
    FileErrorDisplay(outfile);
    Exit(EXIT_FAILURE);
  }

  Swig_banner(runtime);
  Printf(runtime, "\n");

  s = Swig_include_sys("swigcompat.swg");
  if (!s) {
    Printf(stderr, "*** Unable to open 'swigcompat.swg'\n");
    Delete(runtime);
    Exit(EXIT_FAILURE);
  }
  Printf(runtime, "%s", s);
  Delete(s);

  s = Swig_include_sys("swiglabels.swg");
  if (!s) {
    Printf(stderr, "*** Unable to open 'swiglabels.swg'\n");
    Delete(runtime);
    Exit(EXIT_FAILURE);
  }
  Printf(runtime, "%s", s);
  Delete(s);

  s = Swig_include_sys("swigerrors.swg");
  if (!s) {
    Printf(stderr, "*** Unable to open 'swigerrors.swg'\n");
    Delete(runtime);
    Exit(EXIT_FAILURE);
  }
  Printf(runtime, "%s", s);
  Delete(s);

  s = Swig_include_sys("swigrun.swg");
  if (!s) {
    Printf(stderr, "*** Unable to open 'swigrun.swg'\n");
    Delete(runtime);
    Exit(EXIT_FAILURE);
  }
  Printf(runtime, "%s", s);
  Delete(s);

  s = lang->runtimeCode();
  Printf(runtime, "%s", s);
  Delete(s);

  s = Swig_include_sys("runtime.swg");
  if (!s) {
    Printf(stderr, "*** Unable to open 'runtime.swg'\n");
    Delete(runtime);
    Exit(EXIT_FAILURE);
  }
  Printf(runtime, "%s", s);
  Delete(s);

  Delete(runtime);
  Exit(EXIT_SUCCESS);
}

static void getoptions(int argc, char *argv[]) {
  int i;
  // Get options
  for (i = 1; i < argc; i++) {
    if (argv[i] && !Swig_check_marked(i)) {
      if (strncmp(argv[i], "-I-", 3) == 0) {
	// Don't push/pop directories
	Swig_set_push_dir(0);
	Swig_mark_arg(i);
      } else if (strncmp(argv[i], "-I", 2) == 0) {
	// Add a new directory search path
	Swig_add_directory((String_or_char*)(argv[i] + 2));
	Swig_mark_arg(i);
      } else if (strncmp(argv[i], "-D", 2) == 0) {
	String *d = NewString(argv[i] + 2);
	if (Replace(d, "=", " ", DOH_REPLACE_FIRST) == 0) {
	  // Match C preprocessor behaviour whereby -DFOO sets FOO=1.
	  Append(d, " 1");
	}
	// Create a symbol
	Preprocessor_define(d, 0);
	Delete(d);
	Swig_mark_arg(i);
      } else if (strncmp(argv[i], "-U", 2) == 0) {
	Preprocessor_undef(argv[i] + 2);
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-E") == 0) {
	cpp_only = 1;
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-nopreprocess") == 0) {
	no_cpp = 1;
	Swig_mark_arg(i);
      } else if ((strcmp(argv[i], "-verbose") == 0) || (strcmp(argv[i], "-v") == 0)) {
	Verbose = 1;
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-c++") == 0) {
	CPlusPlus = 1;
	Swig_cparse_cplusplus(1);
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-c++out") == 0) {
	// Undocumented
	Swig_cparse_cplusplusout(1);
	Swig_mark_arg(i);
      } else if (strncmp(argv[i], "-std=c", 6) == 0) {
	const char *std = argv[i] + 6;
	if (strncmp(std, "++", 2) == 0) {
	  std += 2;
	  if (strcmp(std, "98") == 0 || strcmp(std, "03") == 0) {
	    stdcpp_define = "__cplusplus 199711L";
	  } else if (strcmp(std, "11") == 0) {
	    stdcpp_define = "__cplusplus 201103L";
	  } else if (strcmp(std, "14") == 0) {
	    stdcpp_define = "__cplusplus 201402L";
	  } else if (strcmp(std, "17") == 0) {
	    stdcpp_define = "__cplusplus 201703L";
	  } else if (strcmp(std, "20") == 0) {
	    stdcpp_define = "__cplusplus 202002L";
	  } else if (strcmp(std, "23") == 0) {
	    stdcpp_define = "__cplusplus 202302L";
	  } else {
	    Printf(stderr, "Unrecognised C++ standard version in option '%s'\n", argv[i]);
	    Exit(EXIT_FAILURE);
	  }
	} else {
	  if (strcmp(std, "89") == 0 || strcmp(std, "90") == 0) {
	    stdc_define = NULL;
	  } else if (strcmp(std, "95") == 0) {
	    stdc_define = "__STDC_VERSION__ 199409L";
	  } else if (strcmp(std, "99") == 0) {
	    stdc_define = "__STDC_VERSION__ 199901L";
	  } else if (strcmp(std, "11") == 0) {
	    stdc_define = "__STDC_VERSION__ 201112L";
	  } else if (strcmp(std, "17") == 0 || strcmp(std, "18") == 0) {
	    // Both GCC and clang accept -std=c18 as well as -std=c17.
	    stdc_define = "__STDC_VERSION__ 201710L";
	  } else if (strcmp(std, "23") == 0) {
	    stdc_define = "__STDC_VERSION__ 202311L";
	  } else {
	    Printf(stderr, "Unrecognised C standard version in option '%s'\n", argv[i]);
	    Exit(EXIT_FAILURE);
	  }
	}
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-fcompact") == 0) {
	Wrapper_compact_print_mode_set(1);
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-fvirtual") == 0) {
	Wrapper_virtual_elimination_mode_set(1);
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-fastdispatch") == 0) {
	Wrapper_fast_dispatch_mode_set(1);
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-nofastdispatch") == 0) {
	Wrapper_fast_dispatch_mode_set(0);
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-naturalvar") == 0) {
	Wrapper_naturalvar_mode_set(1);
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-directors") == 0) {
	SWIG_setfeature("feature:director", "1");
	Wrapper_director_mode_set(1);
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-dirprot") == 0) {
	Wrapper_director_protected_mode_set(1);
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-nodirprot") == 0) {
	Wrapper_director_protected_mode_set(0);
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-pcreversion") == 0) {
	String *version = Swig_pcre_version();
	Printf(stdout, "%s\n", version);
	Delete(version);
	Swig_mark_arg(i);
	Exit(EXIT_SUCCESS);
      } else if (strcmp(argv[i], "-small") == 0) {
	Wrapper_compact_print_mode_set(1);
	Wrapper_virtual_elimination_mode_set(1);
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-external-runtime") == 0) {
	external_runtime = 1;
	Swig_mark_arg(i);
	if (argv[i + 1]) {
	  external_runtime_name = NewString(argv[i + 1]);
	  Swig_mark_arg(i + 1);
	  i++;
	}
      } else if ((strcmp(argv[i], "-nodefaultctor") == 0)) {
	SWIG_setfeature("feature:nodefaultctor", "1");
	Swig_mark_arg(i);
      } else if ((strcmp(argv[i], "-nodefaultdtor") == 0)) {
	SWIG_setfeature("feature:nodefaultdtor", "1");
	Swig_mark_arg(i);
      } else if ((strcmp(argv[i], "-copyctor") == 0)) {
	SWIG_setfeature("feature:copyctor", "1");
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-noexcept") == 0) {
	NoExcept = 1;
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-addextern") == 0) {
	AddExtern = 1;
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-debug-template") == 0) {
	Swig_cparse_debug_templates(1);
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-templatereduce") == 0) {
	SWIG_cparse_template_reduce(1);
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-notemplatereduce") == 0) {
	SWIG_cparse_template_reduce(0);
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-macroerrors") == 0) {
	Swig_cparse_follow_locators(1);
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-swiglib") == 0) {
	Printf(stdout, "%s\n", SwigLib);
	if (SwigLibWinUnix)
	  Printf(stdout, "%s\n", SwigLibWinUnix);
	Exit(EXIT_SUCCESS);
      } else if (strcmp(argv[i], "-o") == 0) {
	Swig_mark_arg(i);
	if (argv[i + 1]) {
	  outfile_name = NewString(argv[i + 1]);
          Swig_filename_correct(outfile_name);
	  if (!outfile_name_h || !dependencies_file) {
	    char *ext = strrchr(Char(outfile_name), '.');
	    String *basename = ext ? NewStringWithSize(Char(outfile_name), (int)(Char(ext) - Char(outfile_name))) : NewString(outfile_name);
	    if (!dependencies_file) {
	      dependencies_file = NewStringf("%s.%s", basename, depends_extension);
	    }
	    if (!outfile_name_h) {
	      Printf(basename, ".%s", hpp_extension);
	      outfile_name_h = NewString(basename);
	    }
	    Delete(basename);
	  }
	  Swig_mark_arg(i + 1);
	  i++;
	} else {
	  Swig_arg_error();
	}
      } else if (strcmp(argv[i], "-oh") == 0) {
	Swig_mark_arg(i);
	if (argv[i + 1]) {
	  outfile_name_h = NewString(argv[i + 1]);
          Swig_filename_correct(outfile_name_h);
	  Swig_mark_arg(i + 1);
	  i++;
	} else {
	  Swig_arg_error();
	}
      } else if (strcmp(argv[i], "-fakeversion") == 0) {
	Swig_mark_arg(i);
	if (argv[i + 1]) {
	  Swig_set_fakeversion(argv[i + 1]);
	  Swig_mark_arg(i + 1);
	  i++;
	} else {
	  Swig_arg_error();
	}
      } else if (strcmp(argv[i], "-version") == 0) {
	fprintf(stdout, "\nSWIG Version %s\n", Swig_package_version());
	fprintf(stdout, "\nCompiled with %s [%s]\n", SWIG_CXX, SWIG_PLATFORM);
	fprintf(stdout, "\nConfigured options: %cpcre\n",
#ifdef HAVE_PCRE
		'+'
#else
		'-'
#endif
	    );
	fprintf(stdout, "\nPlease see %s for reporting bugs and further information\n", PACKAGE_BUGREPORT);
	Exit(EXIT_SUCCESS);
      } else if (strcmp(argv[i], "-copyright") == 0) {
	fprintf(stdout, "\nSWIG Version %s\n", Swig_package_version());
	fprintf(stdout, "Copyright (c) 1995-1998\n");
	fprintf(stdout, "University of Utah and the Regents of the University of California\n");
	fprintf(stdout, "Copyright (c) 1998-2005\n");
	fprintf(stdout, "University of Chicago\n");
	fprintf(stdout, "Copyright (c) 2005-2006\n");
	fprintf(stdout, "Arizona Board of Regents (University of Arizona)\n");
	Exit(EXIT_SUCCESS);
      } else if (strncmp(argv[i], "-l", 2) == 0) {
	// Add a new directory search path
	Append(libfiles, argv[i] + 2);
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-co") == 0) {
	checkout = 1;
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-features") == 0) {
	Swig_mark_arg(i);
	if (argv[i + 1]) {
	  SWIG_setfeatures(argv[i + 1]);
	  Swig_mark_arg(i + 1);
	} else {
	  Swig_arg_error();
	}
      } else if (strcmp(argv[i], "-freeze") == 0) {
	freeze = 1;
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-includeall") == 0) {
	Preprocessor_include_all(1);
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-importall") == 0) {
	Preprocessor_import_all(1);
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-ignoremissing") == 0) {
	Preprocessor_ignore_missing(1);
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-cpperraswarn") == 0) {
	Preprocessor_error_as_warning(1);
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-nocpperraswarn") == 0) {
	Preprocessor_error_as_warning(0);
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-cppext") == 0) {
	Swig_mark_arg(i);
	if (argv[i + 1]) {
	  SWIG_config_cppext(argv[i + 1]);
	  Swig_mark_arg(i + 1);
	  i++;
	} else {
	  Swig_arg_error();
	}
      } else if (strcmp(argv[i], "-debug-typemap") == 0) {
	tm_debug = 1;
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-debug-tmsearch") == 0) {
	Swig_typemap_search_debug_set();
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-debug-tmused") == 0) {
	Swig_typemap_used_debug_set();
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-module") == 0) {
	Swig_mark_arg(i);
	if (argv[i + 1]) {
	  ModuleName = NewString(argv[i + 1]);
	  Swig_mark_arg(i + 1);
	} else {
	  Swig_arg_error();
	}
      } else if (strcmp(argv[i], "-M") == 0) {
	depend = 1;
	depend_only = 1;
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-MM") == 0) {
	depend = 2;
	depend_only = 1;
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-MF") == 0) {
	Swig_mark_arg(i);
	if (argv[i + 1]) {
	  dependencies_file = NewString(argv[i + 1]);
	  Swig_mark_arg(i + 1);
	} else {
	  Swig_arg_error();
	}
      } else if (strcmp(argv[i], "-MD") == 0) {
	depend = 1;
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-MMD") == 0) {
	depend = 2;
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-MP") == 0) {
	depend_phony = 1;
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-MT") == 0) {
	Swig_mark_arg(i);
	if (argv[i + 1]) {
          if (!dependencies_target)
            dependencies_target = NewString(argv[i + 1]);
          else
            Printf(dependencies_target, " %s", argv[i + 1]);
	  Swig_mark_arg(i + 1);
	} else {
	  Swig_arg_error();
	}
      } else if (strcmp(argv[i], "-outdir") == 0) {
	Swig_mark_arg(i);
	if (argv[i + 1]) {
	  outdir = NewString(argv[i + 1]);
	  Swig_mark_arg(i + 1);
	} else {
	  Swig_arg_error();
	}
      } else if (strcmp(argv[i], "-outcurrentdir") == 0) {
	Swig_mark_arg(i);
	outcurrentdir = 1;
      } else if (strcmp(argv[i], "-Wall") == 0) {
	Swig_mark_arg(i);
	Swig_warnall();
      } else if (strcmp(argv[i], "-Wallkw") == 0) {
	allkw = 1;
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-Werror") == 0) {
	werror = 1;
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-Wextra") == 0) {
	Swig_mark_arg(i);
        Swig_warnfilter(EXTRA_WARNINGS, 0);
      } else if (strncmp(argv[i], "-w", 2) == 0) {
	Swig_mark_arg(i);
	Swig_warnfilter(argv[i] + 2, 1);
      } else if (strcmp(argv[i], "-debug-quiet") == 0) {
	Swig_print_quiet(1);
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-debug-symtabs") == 0) {
	dump_symtabs = 1;
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-debug-symbols") == 0) {
	dump_symbols = 1;
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-debug-csymbols") == 0) {
	dump_csymbols = 1;
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-debug-lsymbols") == 0) {
	dump_lang_symbols = 1;
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-debug-tags") == 0) {
	dump_tags = 1;
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-debug-top") == 0) {
	Swig_mark_arg(i);
	if (argv[i + 1]) {
	  String *dump_list = NewString(argv[i + 1]);
	  dump_top = decode_numbers_list(dump_list);
          if (dump_top < STAGE1 || dump_top >= STAGEOVERFLOW)
            Swig_arg_error();
          else
            Swig_mark_arg(i + 1);
          Delete(dump_list);
	} else {
	  Swig_arg_error();
	}
      } else if (strcmp(argv[i], "-debug-module") == 0) {
	Swig_mark_arg(i);
	if (argv[i + 1]) {
	  String *dump_list = NewString(argv[i + 1]);
	  dump_module = decode_numbers_list(dump_list);
          if (dump_module < STAGE1 || dump_module >= STAGEOVERFLOW)
            Swig_arg_error();
          else
            Swig_mark_arg(i + 1);
          Delete(dump_list);
	} else {
	  Swig_arg_error();
	}
      } else if (strcmp(argv[i], "-xmlout") == 0) {
	Swig_mark_arg(i);
	if (argv[i + 1]) {
	  xmlout = NewString(argv[i + 1]);
	  Swig_mark_arg(i + 1);
	} else {
	  Swig_arg_error();
	}
      } else if (strcmp(argv[i], "-nocontract") == 0) {
	Swig_mark_arg(i);
	Swig_contract_mode_set(0);
      } else if (strcmp(argv[i], "-debug-typedef") == 0) {
	dump_typedef = 1;
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-debug-classes") == 0) {
	dump_classes = 1;
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-debug-memory") == 0) {
	memory_debug = 1;
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-Fstandard") == 0) {
	Swig_error_msg_format(EMF_STANDARD);
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-Fmicrosoft") == 0) {
	Swig_error_msg_format(EMF_MICROSOFT);
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-O") == 0) {
	Wrapper_virtual_elimination_mode_set(1);
	Wrapper_fast_dispatch_mode_set(1);
	Swig_mark_arg(i);
      } else if (strcmp(argv[i], "-help") == 0) {
	fputs(usage1, stdout);
	fputs(usage2, stdout);
	fputs(usage3, stdout);
	fputs(usage4, stdout);
	Swig_mark_arg(i);
	help = 1;
      }
    }
  }
}

static void SWIG_exit_handler(int status);

int SWIG_main(int argc, char *argv[], const TargetLanguageModule *tlm) {
  char *c;

  /* Set function for Exit() to call. */
  SetExitHandler(SWIG_exit_handler);

  /* Initialize the SWIG core */
  Swig_init();

  // Default warning suppression
  Swig_warnfilter(EXTRA_WARNINGS, 1);

  // Initialize the preprocessor
  Preprocessor_init();

  // Set lang to a dummy value if no target language was specified so we
  // can process options enough to handle -version, etc.
  lang = tlm ? tlm->fac() : new Language;

  Swig_contract_mode_set(1);

  /* Turn off directors mode */
  Wrapper_director_mode_set(0);
  Wrapper_director_protected_mode_set(1);

  // Inform the parser if the nested classes should be ignored unless explicitly told otherwise via feature:flatnested
  ignore_nested_classes = lang->nestedClassesSupport() == Language::NCS_Unknown ? 1 : 0;

  kwargs_supported = lang->kwargsSupport() ? 1 : 0;

  // Create Library search directories

  // Check for SWIG_LIB environment variable
  if ((c = getenv("SWIG_LIB")) == (char *) 0) {
#if defined(_WIN32)
    char buf[MAX_PATH];
    char *p;
    if (!(GetModuleFileName(0, buf, MAX_PATH) == 0 || (p = strrchr(buf, '\\')) == 0)) {
      *(p + 1) = '\0';
      SwigLib = NewStringf("%sLib", buf); // Native windows installation path
    } else {
      SwigLib = NewStringf("");	// Unexpected error
    }
    if (Len(SWIG_LIB_WIN_UNIX) > 0)
      SwigLibWinUnix = NewString(SWIG_LIB_WIN_UNIX); // Unix installation path using a drive letter (for msys/mingw)
#else
    SwigLib = NewString(SWIG_LIB);
#endif
  } else {
    SwigLib = NewString(c);
  }

  libfiles = NewList();
  all_output_files = NewList();

  getoptions(argc, argv);

  // Parse language dependent options
  lang->main(argc, argv);

  if (help) {
    Printf(stdout, "\nNote: 'swig -<lang> -help' displays options for a specific target language.\n\n");
    Exit(EXIT_SUCCESS);	// Exit if we're in help mode
  }

  // Check all of the options to make sure we're cool.
  // Don't check for an input file if -external-runtime is passed
  Swig_check_options(external_runtime ? 0 : 1);

  if (CPlusPlus && cparse_cplusplusout) {
    Printf(stderr, "The -c++out option is for C input but C++ input has been requested via -c++\n");
    Exit(EXIT_FAILURE);
  }

  // Set up some default symbols (available in both SWIG interface files
  // and C files).  Define all predefined symbols after option parsing so
  // that attempts to use `-U` to undefine them are consistently handled.

  Preprocessor_define("SWIG 1", 0);
  Preprocessor_define("__STDC__ 1", 0);

  if (CPlusPlus) {
    // Default to C++98.
    if (!stdcpp_define) stdcpp_define = "__cplusplus 199711L";
    Preprocessor_define(stdcpp_define, 0);
  } else {
    if (stdcpp_define) {
      Printf(stderr, "Option -std=c++XX was used without -c++\n");
      Exit(EXIT_FAILURE);
    }
  }

  if (!CPlusPlus) {
    // Default to C90 which didn't define __STDC_VERSION__.
    if (stdc_define) {
      Preprocessor_define(stdc_define, 0);
    }
  } else {
    if (stdc_define) {
      Printf(stderr, "Option -std=cXX was used with -c++\n");
      Exit(EXIT_FAILURE);
    }
  }

  String *vers = Swig_package_version_hex();
  Preprocessor_define(vers, 0);
  Delete(vers);

  // Add language dependent directory to the search path
  {
    String *rl = NewString("");
    Printf(rl, ".%sswig_lib%s%s", SWIG_FILE_DELIMITER, SWIG_FILE_DELIMITER, LangSubDir);
    Swig_add_directory(rl);
    if (SwigLibWinUnix) {
      rl = NewString("");
      Printf(rl, "%s%s%s", SwigLibWinUnix, SWIG_FILE_DELIMITER, LangSubDir);
      Swig_add_directory(rl);
    }
    rl = NewString("");
    Printf(rl, "%s%s%s", SwigLib, SWIG_FILE_DELIMITER, LangSubDir);
    Swig_add_directory(rl);
  }

  Swig_add_directory((String *) "." SWIG_FILE_DELIMITER "swig_lib");
  if (SwigLibWinUnix)
    Swig_add_directory((String *) SwigLibWinUnix);
  Swig_add_directory(SwigLib);

  if (Verbose) {
    Printf(stdout, "Language subdirectory: %s\n", LangSubDir);
    Printf(stdout, "Search paths:\n");
    List *sp = Swig_search_path();
    Iterator s;
    for (s = First(sp); s.item; s = Next(s)) {
      Printf(stdout, "   %s\n", s.item);
    }
  }
  // handle the -external-runtime argument
  if (external_runtime)
    SWIG_dump_runtime();

  // If we made it this far, looks good. go for it....

  input_file = NewString(argv[argc - 1]);
  Swig_filename_correct(input_file);

  // If the user has requested to check out a file, handle that
  if (checkout) {
    DOH *s;
    String *outfile = input_file;
    if (outfile_name)
      outfile = outfile_name;

    if (Verbose)
      Printf(stdout, "Handling checkout...\n");

    s = Swig_include(input_file);
    if (!s) {
      Printf(stderr, "Unable to locate '%s' in the SWIG library.\n", input_file);
    } else {
      FILE *f = Swig_open(outfile);
      if (f) {
	fclose(f);
	Printf(stderr, "File '%s' already exists. Checkout aborted.\n", outfile);
      } else {
        File *f_outfile = NewFile(outfile, "w", SWIG_output_files());
        if (!f_outfile) {
          FileErrorDisplay(outfile);
          Exit(EXIT_FAILURE);
        } else {
          if (Verbose)
            Printf(stdout, "'%s' checked out from the SWIG library.\n", outfile);
          Printv(f_outfile, s, NIL);
          Delete(f_outfile);
        }
      }
    }
  } else {
    // Run the preprocessor
    if (Verbose)
      Printf(stdout, "Preprocessing...\n");

    {
      int i;
      String *fs = NewString("");
      FILE *df = Swig_open(input_file);
      if (!df) {
	char *cfile = Char(input_file);
	if (cfile && cfile[0] == '-') {
	  Printf(stderr, "Unable to find option or file '%s', ", input_file);
	  Printf(stderr, "Use 'swig -help' for more information.\n");
	} else {
	  Printf(stderr, "Unable to find file '%s'.\n", input_file);
	}
	Exit(EXIT_FAILURE);
      }

      if (!tlm) {
	Printf(stderr, "No target language specified.\n");
	Printf(stderr, "Use 'swig -help' for more information.\n");
	Exit(EXIT_FAILURE);
      }

      if (!no_cpp) {
	fclose(df);
	Printf(fs, "%%include <swig.swg>\n");
	if (allkw) {
	  Printf(fs, "%%include <allkw.swg>\n");
	}
	if (lang_config) {
	  Printf(fs, "\n%%include <%s>\n", lang_config);
	}
	Printf(fs, "%%include(maininput=\"%s\") \"%s\"\n", Swig_filename_escape(input_file), Swig_filename_escape(Swig_last_file()));
	for (i = 0; i < Len(libfiles); i++) {
	  Printf(fs, "\n%%include \"%s\"\n", Swig_filename_escape(Getitem(libfiles, i)));
	}
	Seek(fs, 0, SEEK_SET);
	cpps = Preprocessor_parse(fs);
	Delete(fs);
      } else {
	cpps = Swig_read_file(df);
	fclose(df);
      }
      if (Swig_error_count()) {
	Exit(EXIT_FAILURE);
      }
      if (cpp_only) {
	Printf(stdout, "%s", cpps);
	Exit(EXIT_SUCCESS);
      }
      if (depend) {
	if (!no_cpp) {
	  String *outfile;
          File *f_dependencies_file = 0;

	  String *inputfile_filename = outcurrentdir ? Swig_file_filename(input_file): Copy(input_file);
	  String *basename = Swig_file_basename(inputfile_filename);
	  if (!outfile_name) {
	    if (CPlusPlus || lang->cplus_runtime_mode()) {
	      outfile = NewStringf("%s_wrap.%s", basename, cpp_extension);
	    } else {
	      outfile = NewStringf("%s_wrap.c", basename);
	    }
	  } else {
	    outfile = NewString(outfile_name);
	  }
	  if (dependencies_file && Len(dependencies_file) != 0) {
	    f_dependencies_file = NewFile(dependencies_file, "w", SWIG_output_files());
	    if (!f_dependencies_file) {
	      FileErrorDisplay(dependencies_file);
	      Exit(EXIT_FAILURE);
	    }
	  } else if (!depend_only) {
	    String *filename = NewStringf("%s_wrap.%s", basename, depends_extension);
	    f_dependencies_file = NewFile(filename, "w", SWIG_output_files());
	    if (!f_dependencies_file) {
	      FileErrorDisplay(filename);
	      Exit(EXIT_FAILURE);
	    }
	  } else
	    f_dependencies_file = stdout;
	  if (dependencies_target) {
	    Printf(f_dependencies_file, "%s: ", Swig_filename_escape_space(dependencies_target));
	  } else {
	    Printf(f_dependencies_file, "%s: ", Swig_filename_escape_space(outfile));
	  }
	  List *files = Preprocessor_depend();
	  List *phony_targets = NewList();
	  for (int i = 0; i < Len(files); i++) {
            int use_file = 1;
            if (depend == 2) {
              if ((Strncmp(Getitem(files, i), SwigLib, Len(SwigLib)) == 0) || (SwigLibWinUnix && (Strncmp(Getitem(files, i), SwigLibWinUnix, Len(SwigLibWinUnix)) == 0)))
                use_file = 0;
            }
            if (use_file) {
              Printf(f_dependencies_file, "\\\n  %s ", Swig_filename_escape_space(Getitem(files, i)));
              if (depend_phony)
                Append(phony_targets, Getitem(files, i));
            }
	  }
	  Printf(f_dependencies_file, "\n");
	  if (depend_phony) {
	    for (int i = 0; i < Len(phony_targets); i++) {
	      Printf(f_dependencies_file, "\n%s:\n", Swig_filename_escape_space(Getitem(phony_targets, i)));
	    }
	  }

	  if (f_dependencies_file != stdout)
	    Delete(f_dependencies_file);
	  if (depend_only)
	    Exit(EXIT_SUCCESS);
	  Delete(inputfile_filename);
	  Delete(basename);
	  Delete(phony_targets);
	} else {
	  Printf(stderr, "Cannot generate dependencies with -nopreprocess\n");
	  // Actually we could but it would be inefficient when just generating dependencies, as it would be done after Swig_cparse
	  Exit(EXIT_FAILURE);
	}
      }
      Seek(cpps, 0, SEEK_SET);
    }

    /* Register a null file with the file handler */
    Swig_register_filebyname("null", NewString(""));

    // Pass control over to the specific language interpreter
    if (Verbose) {
      fprintf(stdout, "Starting language-specific parse...\n");
      fflush(stdout);
    }

    Node *top = Swig_cparse(cpps);

    if (dump_top & STAGE1) {
      Printf(stdout, "debug-top stage 1\n");
      Swig_print_tree(top);
    }
    if (dump_module & STAGE1) {
      Printf(stdout, "debug-module stage 1\n");
      Swig_print_tree(Getattr(top, "module"));
    }
    if (!CPlusPlus) {
      if (Verbose)
	Printf(stdout, "Processing unnamed structs...\n");
      Swig_nested_name_unnamed_c_structs(top);
    }
    Swig_extend_unused_check();

    if (Verbose) {
      Printf(stdout, "Processing types...\n");
    }
    Swig_process_types(top);

    if (dump_top & STAGE2) {
      Printf(stdout, "debug-top stage 2\n");
      Swig_print_tree(top);
    }
    if (dump_module & STAGE2) {
      Printf(stdout, "debug-module stage 2\n");
      Swig_print_tree(Getattr(top, "module"));
    }

    if (Verbose) {
      Printf(stdout, "C++ analysis...\n");
    }
    Swig_default_allocators(top);

    if (CPlusPlus) {
      if (Verbose)
	Printf(stdout, "Processing nested classes...\n");
      Swig_nested_process_classes(top);
    }

    if (dump_top & STAGE3) {
      Printf(stdout, "debug-top stage 3\n");
      Swig_print_tree(top);
    }
    if (top && (dump_module & STAGE3)) {
      Printf(stdout, "debug-module stage 3\n");
      Swig_print_tree(Getattr(top, "module"));
    }

    if (Verbose) {
      Printf(stdout, "Generating wrappers...\n");
    }

    if (top && dump_classes) {
      Hash *classes = Getattr(top, "classes");
      if (classes) {
	Printf(stdout, "Classes\n");
	Printf(stdout, "------------\n");
	Iterator ki;
	for (ki = First(classes); ki.key; ki = Next(ki)) {
	  Printf(stdout, "%s\n", ki.key);
	}
      }
    }

    if (dump_typedef) {
      SwigType_print_scope();
    }

    if (dump_symtabs) {
      Swig_symbol_print_tables(Swig_symbol_global_scope());
      Swig_symbol_print_tables_summary();
    }

    if (dump_symbols) {
      Swig_symbol_print_symbols();
    }

    if (dump_csymbols) {
      Swig_symbol_print_csymbols();
    }

    if (dump_tags) {
      Swig_print_tags(top, 0);
    }
    if (top) {
      if (!Getattr(top, "name")) {
	Printf(stderr, "No module name specified using %%module or -module.\n");
	Exit(EXIT_FAILURE);
      } else {
	/* Set some filename information on the object */
	String *infile = scanner_get_main_input_file();
	if (!infile) {
	  Printf(stderr, "Missing input file in preprocessed output.\n");
	  Exit(EXIT_FAILURE);
	}
	Setattr(top, "infile", infile); // Note: if nopreprocess then infile is the original input file, otherwise input_file
	Setattr(top, "inputfile", input_file);

	String *infile_filename = outcurrentdir ? Swig_file_filename(infile): Copy(infile);
	String *basename = Swig_file_basename(infile_filename);
	if (!outfile_name) {
	  if (CPlusPlus || lang->cplus_runtime_mode()) {
	    Setattr(top, "outfile", NewStringf("%s_wrap.%s", basename, cpp_extension));
	  } else {
	    Setattr(top, "outfile", NewStringf("%s_wrap.c", basename));
	  }
	} else {
	  Setattr(top, "outfile", outfile_name);
	}
	if (!outfile_name_h) {
	  Setattr(top, "outfile_h", NewStringf("%s_wrap.%s", basename, hpp_extension));
	} else {
	  Setattr(top, "outfile_h", outfile_name_h);
	}
	configure_outdir(Getattr(top, "outfile"));
	if (Swig_contract_mode_get()) {
	  Swig_contracts(top);
	}

	// Check the extension for a c/c++ file.  If so, we're going to declare everything we see as "extern"
	ForceExtern = check_extension(input_file);

	if (tlm->status == Experimental) {
	  Swig_warning(WARN_LANG_EXPERIMENTAL, "SWIG", 1, "Experimental target language. "
	    "Target language %s specified by %s is an experimental language. "
	    "Please read about SWIG experimental languages, https://swig.org/Doc4.0/Introduction.html#Introduction_experimental_status.\n",
	    tlm->help ? tlm->help : "", tlm->name);
	}

	lang->top(top);

	Delete(infile_filename);
	Delete(basename);
      }
    }
    if (dump_lang_symbols) {
      lang->dumpSymbols();
    }
    if (dump_top & STAGE4) {
      Printf(stdout, "debug-top stage 4\n");
      Swig_print_tree(top);
    }
    if (dump_module & STAGE4) {
      Printf(stdout, "debug-module stage 4\n");
      Swig_print_tree(Getattr(top, "module"));
    }
    if (xmlout && top) {
      delete lang;
      lang = 0;
      Swig_print_xml(top, xmlout);
    }
    Delete(top);
  }
  if (tm_debug)
    Swig_typemap_debug();
  if (memory_debug)
    DohMemoryDebug();

  char *outfiles = getenv("CCACHE_OUTFILES");
  if (outfiles) {
    File *f_outfiles = NewFile(outfiles, "w", 0);
    if (!f_outfiles) {
      Printf(stderr, "Failed to write list of output files to the filename '%s' specified in CCACHE_OUTFILES environment variable - ", outfiles);
      FileErrorDisplay(outfiles);
      Exit(EXIT_FAILURE);
    } else {
      int i;
      for (i = 0; i < Len(all_output_files); i++)
        Printf(f_outfiles, "%s\n", Getitem(all_output_files, i));
      Delete(f_outfiles);
    }
  }

  // Deletes
  Delete(libfiles);
  Preprocessor_delete();

  while (freeze) {
  }

  delete lang;

  int error_count = werror ? Swig_warn_count() : 0;
  error_count += Swig_error_count();

  if (error_count != 0)
    Exit(EXIT_FAILURE);

  return 0;
}

/* -----------------------------------------------------------------------------
 * SWIG_exit_handler()
 *
 * Cleanup and either freeze or exit
 * ----------------------------------------------------------------------------- */

static void SWIG_exit_handler(int status) {
  while (freeze) {
  }

  if (status > 0) {
    CloseAllOpenFiles();

    /* Remove all generated files */
    if (all_output_files) {
      for (int i = 0; i < Len(all_output_files); i++) {
	String *filename = Getitem(all_output_files, i);
	int removed = remove(Char(filename));
	if (removed == -1)
	  fprintf(stderr, "On exit, could not delete file %s: %s\n", Char(filename), strerror(errno));
      }
    }
  }
}