text: /*-
   * Copyright (c) 2002 Tim J. Robbins.
   * All rights reserved.
   *
   * 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 AUTHOR 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 AUTHOR 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.
   *
   * $FreeBSD: src/usr.bin/c99/c99.c,v 1.4 2005/05/21 09:55:05 ru Exp $
   */
  
  /*
   * c99 -- compile standard C programs
   *
   * This is essentially a wrapper around the system C compiler that forces
   * the compiler into C99 mode and handles some of the standard libraries
   * specially.
   */
  
  #include <sys/types.h>
  
  #include <err.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include <unistd.h>
  
  static char **args;
  static u_int cargs, nargs;
  
  static void addarg(const char *);
  static void addlib(const char *);
  static void usage(void) __dead2;
  
  int
  main(int argc, char *argv[])
  {
  	int ch, i;
  
  	args = NULL;
  	cargs = nargs = 0;
  
  	while ((ch = getopt(argc, argv, "cD:EgI:L:o:O:sU:l:")) != -1) {
  		if (ch == 'l') {
  			/* Gone too far. Back up and get out. */
  			if (argv[optind - 1][0] == '-')
  				optind -= 1;
  			else
  				optind -= 2;
  			break;
  		} else if (ch == '?')
  			usage();
  	}
  
  	addarg("cc");
  	addarg("-std=iso9899:1999");
  	addarg("-pedantic");
  	for (i = 1; i < optind; i++)
  		addarg(argv[i]);
  	while (i < argc) {
  		if (strncmp(argv[i], "-l", 2) == 0) {
  			if (argv[i][2] != '\0')
  				addlib(argv[i++] + 2);
  			else {
  				if (argv[++i] == NULL)
  					usage();
  				addlib(argv[i++]);
  			}
  		} else
  			addarg(argv[i++]);
  	}
  	execv("/usr/bin/cc", args);
  	err(1, "/usr/bin/cc");
  }
  
  static void
  addarg(const char *item)
  {
  	if (nargs + 1 >= cargs) {
  		cargs += 16;
  		if ((args = realloc(args, sizeof(*args) * cargs)) == NULL)
  			err(1, "malloc");
  	}
  	if ((args[nargs++] = strdup(item)) == NULL)
  		err(1, "strdup");
  	args[nargs] = NULL;
  }
  
  static void
  addlib(const char *lib)
  {
  
  	if (strcmp(lib, "pthread") == 0)
  		/* FreeBSD's gcc uses -pthread instead of -lpthread. */
  		addarg("-pthread");
  	else if (strcmp(lib, "xnet") == 0)
  		/* xnet functionality is in libc. */
  		;
  	else {
  		addarg("-l");
  		addarg(lib);
  	}
  }
  
  static void
  usage(void)
  {
  	fprintf(stderr, "%s\n%s\n",
  "usage: c99 [-cEgs] [-D name[=value]] ... [-I directory] ... [-L directory] ...",
  "       [-o outfile] [-O optlevel] [-U name] ... operand ...");
  	exit(1);
  }
  