The Tor Browser / file revision

 /* $Xorg: main.c,v 1.5 2001/02/09 02:03:16 xorgcvs Exp $ */

 /*

 Copyright (c) 1993, 1994, 1998 The Open Group

 Permission to use, copy, modify, distribute, and sell this software and its

 documentation for any purpose is hereby granted without fee, provided that

 the above copyright notice appear in all copies and that both that

 copyright notice and this permission notice appear in supporting

 documentation.

 The above copyright notice and this permission notice shall be included in

 all copies or substantial portions of the Software.

 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE

 THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

 Except as contained in this notice, the name of The Open Group shall not be

 used in advertising or otherwise to promote the sale, use or other dealings

 in this Software without prior written authorization from The Open Group.

 */

 /* $XFree86: xc/config/makedepend/main.c,v 3.32 2003/03/26 20:43:48 tsi Exp $ */

 #include "def.h"

 #ifdef hpux

 #define sigvec sigvector

 #endif /* hpux */

 #ifdef X_POSIX_C_SOURCE

 #define _POSIX_C_SOURCE X_POSIX_C_SOURCE

 #include <signal.h>

 #undef _POSIX_C_SOURCE

 #else

 #if defined(X_NOT_POSIX) || defined(_POSIX_SOURCE)

 #include <signal.h>

 #else

 #define _POSIX_SOURCE

 #include <signal.h>

 #undef _POSIX_SOURCE

 #endif

 #endif

 #include <stdarg.h>

 #ifdef _WIN32

 #include <io.h>

 #endif

 #ifdef MINIX

 #define USE_CHMOD	1

 #endif

 #ifdef DEBUG

 int	_debugmask;

 #endif

 /* #define DEBUG_DUMP */

 #ifdef DEBUG_DUMP

 #define DBG_PRINT(file, fmt, args)   fprintf(file, fmt, args)

 #else

 #define DBG_PRINT(file, fmt, args)   /* empty */

 #endif

 #define DASH_INC_PRE    "#include \""

 #define DASH_INC_POST   "\""

 char *ProgramName;

 char	*directives[] = {

 	"if",

 	"ifdef",

 	"ifndef",

 	"else",

 	"endif",

 	"define",

 	"undef",

 	"include",

 	"line",

 	"pragma",

 	"error",

 	"ident",

 	"sccs",

 	"elif",

 	"eject",

 	"warning",

 	"include_next",

 	NULL

 };

 #define MAKEDEPEND

 #include "imakemdep.h"	/* from config sources */

 #undef MAKEDEPEND

 struct	inclist inclist[ MAXFILES ],

 		*inclistp = inclist,

 		*inclistnext = inclist,

 		maininclist;

 static char	*filelist[ MAXFILES ];

 char		*includedirs[ MAXDIRS + 1 ],

 		**includedirsnext = includedirs;

 char		*notdotdot[ MAXDIRS ];

 static int	cmdinc_count = 0;

 static char	*cmdinc_list[ 2 * MAXINCFILES ];

 char		*objprefix = "";

 char		*objsuffix = OBJSUFFIX;

 static char	*startat = "# DO NOT DELETE";

 int		width = 78;

 static boolean	append = FALSE;

 boolean		printed = FALSE;

 boolean		verbose = FALSE;

 boolean		show_where_not = FALSE;

 /* Warn on multiple includes of same file */

 boolean 	warn_multiple = FALSE;

 static void setfile_cmdinc(struct filepointer *filep, long count, char **list);

 static void redirect(char *line, char *makefile);

 static

 #ifdef SIGNALRETURNSINT

 int

 #else

 void

 #endif

 catch (int sig)

 {

 	fflush (stdout);

 	fatalerr ("got signal %d\n", sig);

 }

 #if defined(USG) || (defined(i386) && defined(SYSV)) || defined(WIN32) || defined(__UNIXOS2__) || defined(Lynx_22) || defined(__CYGWIN__)

 #define USGISH

 #endif

 #ifndef USGISH

 #ifdef X_NOT_POSIX

 #define sigaction sigvec

 #define sa_handler sv_handler

 #define sa_mask sv_mask

 #define sa_flags sv_flags

 #endif

 struct sigaction sig_act;

 #endif /* USGISH */

 int

 main(int argc, char *argv[])

 {

 	char	**fp = filelist;

 	char	**incp = includedirs;

 	char	*p;

 	struct inclist	*ip;

 	char	*makefile = NULL;

 	struct filepointer	*filecontent;

 	struct symtab *psymp = predefs;

 	char *endmarker = NULL;

 	char *defincdir = NULL;

 	char **undeflist = NULL;

 	int numundefs = 0, i;

 	register char offset;

 	ProgramName = argv[0];

 	while (psymp->s_name)

 	{

 	    define2(psymp->s_name, psymp->s_value, &maininclist);

 	    psymp++;

 	}

 	if (argc == 2 && argv[1][0] == '@') {

 	    struct stat ast;

 	    int afd;

 	    char *args;

 	    char **nargv;

 	    int nargc;

 	    char quotechar = '\0';

 	    nargc = 1;

 	    if ((afd = open(argv[1]+1, O_RDONLY)) < 0)

 		fatalerr("cannot open \"%s\"\n", argv[1]+1);

 	    fstat(afd, &ast);

 	    args = (char *)malloc(ast.st_size + 1);

 	    if ((ast.st_size = read(afd, args, ast.st_size)) < 0)

 		fatalerr("failed to read %s\n", argv[1]+1);

 	    args[ast.st_size] = '\0';

 	    close(afd);

 	    for (p = args; *p; p++) {

 		if (quotechar) {

 		    if (quotechar == '\\' ||

 			(*p == quotechar && p[-1] != '\\'))

 			quotechar = '\0';

 		    continue;

 		}

 		switch (*p) {

 		case '\\':

 		case '"':

 		case '\'':

 		    quotechar = *p;

 		    break;

 		case ' ':

 		case '\n':

 		    *p = '\0';

 		    if (p > args && p[-1])

 			nargc++;

 		    break;

 		}

 	    }

 	    if (p[-1])

 		nargc++;

 	    nargv = (char **)malloc(nargc * sizeof(char *));

 	    nargv[0] = argv[0];

 	    argc = 1;

 	    for (p = args; argc < nargc; p += strlen(p) + 1)

 		if (*p) nargv[argc++] = p;

 	    argv = nargv;

 	}

 	for(argc--, argv++; argc; argc--, argv++) {

 	    	/* if looking for endmarker then check before parsing */

 		if (endmarker && strcmp (endmarker, *argv) == 0) {

 		    endmarker = NULL;

 		    continue;

 		}

 		if (**argv != '-') {

 			/* treat +thing as an option for C++ */

 			if (endmarker && **argv == '+')

 				continue;

 			*fp++ = argv[0];

 			continue;

 		}

 		switch(argv[0][1]) {

 		case '-':

 			endmarker = &argv[0][2];

 			if (endmarker[0] == '\0') endmarker = "--";

 			break;

 		case 'D':

 			offset = 2;

 			if (argv[0][2] == '\0') {

 				argv++;

 				argc--;

 				offset = 0;

 			}

 			/* offset +1 here since first def letter

 			 * cannot be `=`

 			 */

 			for (p = argv[0] + offset + 1; *p; p++)

 				if (*p == '=') {

 					*p = ' ';

 					break;

 				}

 			define(argv[0] + offset, &maininclist);

 			break;

 		case 'I':

 			if (incp >= includedirs + MAXDIRS)

 			    fatalerr("Too many -I flags.\n");

 			*incp++ = argv[0]+2;

 			if (**(incp-1) == '\0') {

 				*(incp-1) = *(++argv);

 				argc--;

 			}

 			break;

 		case 'U':

 			/* Undef's override all -D's so save them up */

 			numundefs++;

 			if (numundefs == 1)

 			    undeflist = malloc(sizeof(char *));

 			else

 			    undeflist = realloc(undeflist,

 						numundefs * sizeof(char *));

 			offset = 2;

 			if (argv[0][2] == '\0') {

 				argv++;

 				argc--;

 				offset = 0;

 			}

 			undeflist[numundefs - 1] = argv[0] + offset;

 			break;

 		case 'Y':

 			defincdir = argv[0]+2;

 			break;

 		/* do not use if endmarker processing */

 		case 'a':

 			if (endmarker) break;

 			append = TRUE;

 			break;

 		case 'w':

 			if (endmarker) break;

 			if (argv[0][2] == '\0') {

 				argv++;

 				argc--;

 				width = atoi(argv[0]);

 			} else

 				width = atoi(argv[0]+2);

 			break;

 		case 'o':

 			if (endmarker) break;

 			if (argv[0][2] == '\0') {

 				argv++;

 				argc--;

 				objsuffix = argv[0];

 			} else

 				objsuffix = argv[0]+2;

 			break;

 		case 'p':

 			if (endmarker) break;

 			if (argv[0][2] == '\0') {

 				argv++;

 				argc--;

 				objprefix = argv[0];

 			} else

 				objprefix = argv[0]+2;

 			break;

 		case 'v':

 			if (endmarker) break;

 			verbose = TRUE;

 #ifdef DEBUG

 			if (argv[0][2])

 				_debugmask = atoi(argv[0]+2);

 #endif

 			break;

 		case 's':

 			if (endmarker) break;

 			startat = argv[0]+2;

 			if (*startat == '\0') {

 				startat = *(++argv);

 				argc--;

 			}

 			if (*startat != '#')

 				fatalerr("-s flag's value should start %s\n",

 					"with '#'.");

 			break;

 		case 'f':

 			if (endmarker) break;

 			makefile = argv[0]+2;

 			if (*makefile == '\0') {

 				makefile = *(++argv);

 				argc--;

 			}

 			break;

 		case 'm':

 			warn_multiple = TRUE;

 			break;

 		/* Ignore -O, -g so we can just pass ${CFLAGS} to

 		   makedepend

 		 */

 		case 'O':

 		case 'g':

 			break;

 		case 'i':

 			if (strcmp(&argv[0][1],"include") == 0) {

 				char *buf;

 				if (argc<2)

 					fatalerr("option -include is a "

 						 "missing its parameter\n");

 				if (cmdinc_count >= MAXINCFILES)

 					fatalerr("Too many -include flags.\n");

 				argc--;

 				argv++;

 				buf = malloc(strlen(DASH_INC_PRE) +

 					     strlen(argv[0]) +

 					     strlen(DASH_INC_POST) + 1);

                 		if(!buf)

 					fatalerr("out of memory at "

 						 "-include string\n");

 				cmdinc_list[2 * cmdinc_count + 0] = argv[0];

 				cmdinc_list[2 * cmdinc_count + 1] = buf;

 				cmdinc_count++;

 				break;

 			}

 			/* intentional fall through */

 		default:

 			if (endmarker) break;

 	/*		fatalerr("unknown opt = %s\n", argv[0]); */

 			warning("ignoring option %s\n", argv[0]);

 		}

 	}

 	/* Now do the undefs from the command line */

 	for (i = 0; i < numundefs; i++)

 	    undefine(undeflist[i], &maininclist);

 	if (numundefs > 0)

 	    free(undeflist);

 	if (!defincdir) {

 #ifdef PREINCDIR

 	    if (incp >= includedirs + MAXDIRS)

 		fatalerr("Too many -I flags.\n");

 	    *incp++ = PREINCDIR;

 #endif

 #if defined(__UNIXOS2__) || defined(_MSC_VER)

 	    {

 #if defined(_MSC_VER)

 		char *includepath = getenv("INCLUDE");

 #else

 		char *includepath = getenv("C_INCLUDE_PATH");

 #endif

 		/* can have more than one component */

 		if (includepath) {

 		    char *beg, *end;

 		    beg= (char*)strdup(includepath);

 		    for (;;) {

 			end = (char*)strchr(beg,';');

 			if (end) *end = 0;

 		    	if (incp >= includedirs + MAXDIRS)

 				fatalerr("Too many include dirs\n");

 			*incp++ = beg;

 			if (!end) break;

 			beg = end+1;

 		    }

 		}

 	    }

 #else /* !__UNIXOS2__ && !_MSC_VER, does not use INCLUDEDIR at all */

 	    if (incp >= includedirs + MAXDIRS)

 		fatalerr("Too many -I flags.\n");

 	    *incp++ = INCLUDEDIR;

 #endif

 #ifdef EXTRAINCDIR

 	    if (incp >= includedirs + MAXDIRS)

 		fatalerr("Too many -I flags.\n");

 	    *incp++ = EXTRAINCDIR;

 #endif

 #ifdef POSTINCDIR

 	    if (incp >= includedirs + MAXDIRS)

 		fatalerr("Too many -I flags.\n");

 	    *incp++ = POSTINCDIR;

 #endif

 	} else if (*defincdir) {

 	    if (incp >= includedirs + MAXDIRS)

 		fatalerr("Too many -I flags.\n");

 	    *incp++ = defincdir;

 	}

 	redirect(startat, makefile);

 	/*

 	 * catch signals.

 	 */

 #ifdef USGISH

 /*  should really reset SIGINT to SIG_IGN if it was.  */

 #ifdef SIGHUP

 	signal (SIGHUP, catch);

 #endif

 	signal (SIGINT, catch);

 #ifdef SIGQUIT

 	signal (SIGQUIT, catch);

 #endif

 	signal (SIGILL, catch);

 #ifdef SIGBUS

 	signal (SIGBUS, catch);

 #endif

 	signal (SIGSEGV, catch);

 #ifdef SIGSYS

 	signal (SIGSYS, catch);

 #endif

 #else

 	sig_act.sa_handler = catch;

 #if defined(_POSIX_SOURCE) || !defined(X_NOT_POSIX)

 	sigemptyset(&sig_act.sa_mask);

 	sigaddset(&sig_act.sa_mask, SIGINT);

 	sigaddset(&sig_act.sa_mask, SIGQUIT);

 #ifdef SIGBUS

 	sigaddset(&sig_act.sa_mask, SIGBUS);

 #endif

 	sigaddset(&sig_act.sa_mask, SIGILL);

 	sigaddset(&sig_act.sa_mask, SIGSEGV);

 	sigaddset(&sig_act.sa_mask, SIGHUP);

 	sigaddset(&sig_act.sa_mask, SIGPIPE);

 #ifdef SIGSYS

 	sigaddset(&sig_act.sa_mask, SIGSYS);

 #endif

 #else

 	sig_act.sa_mask = ((1<<(SIGINT -1))

 			   |(1<<(SIGQUIT-1))

 #ifdef SIGBUS

 			   |(1<<(SIGBUS-1))

 #endif

 			   |(1<<(SIGILL-1))

 			   |(1<<(SIGSEGV-1))

 			   |(1<<(SIGHUP-1))

 			   |(1<<(SIGPIPE-1))

 #ifdef SIGSYS

 			   |(1<<(SIGSYS-1))

 #endif

 			   );

 #endif /* _POSIX_SOURCE */

 	sig_act.sa_flags = 0;

 	sigaction(SIGHUP, &sig_act, (struct sigaction *)0);

 	sigaction(SIGINT, &sig_act, (struct sigaction *)0);

 	sigaction(SIGQUIT, &sig_act, (struct sigaction *)0);

 	sigaction(SIGILL, &sig_act, (struct sigaction *)0);

 #ifdef SIGBUS

 	sigaction(SIGBUS, &sig_act, (struct sigaction *)0);

 #endif

 	sigaction(SIGSEGV, &sig_act, (struct sigaction *)0);

 #ifdef SIGSYS

 	sigaction(SIGSYS, &sig_act, (struct sigaction *)0);

 #endif

 #endif /* USGISH */

 	/*

 	 * now peruse through the list of files.

 	 */

 	for(fp=filelist; *fp; fp++) {

 		DBG_PRINT(stderr,"file: %s\n",*fp);

 		filecontent = getfile(*fp);

 		setfile_cmdinc(filecontent, cmdinc_count, cmdinc_list);

 		ip = newinclude(*fp, (char *)NULL);

 		find_includes(filecontent, ip, ip, 0, FALSE);

 		freefile(filecontent);

 		recursive_pr_include(ip, ip->i_file, base_name(*fp));

 		inc_clean();

 	}

 	if (printed)

 		printf("\n");

 	return 0;

 }

 #ifdef __UNIXOS2__

 /*

  * eliminate \r chars from file

  */

 static int 

 elim_cr(char *buf, int sz)

 {

 	int i,wp;

 	for (i= wp = 0; i<sz; i++) {

 		if (buf[i] != '\r')

 			buf[wp++] = buf[i];

 	}

 	return wp;

 }

 #endif

 struct filepointer *

 getfile(char *file)

 {

 	int	fd;

 	struct filepointer	*content;

 	struct stat	st;

 	content = (struct filepointer *)malloc(sizeof(struct filepointer));

 	content->f_name = file;

 	if ((fd = open(file, O_RDONLY)) < 0) {

 		warning("cannot open \"%s\"\n", file);

 		content->f_p = content->f_base = content->f_end = (char *)malloc(1);

 		*content->f_p = '\0';

 		return(content);

 	}

 	fstat(fd, &st);

 	content->f_base = (char *)malloc(st.st_size+1);

 	if (content->f_base == NULL)

 		fatalerr("cannot allocate mem\n");

 	if ((st.st_size = read(fd, content->f_base, st.st_size)) < 0)

 		fatalerr("failed to read %s\n", file);

 #ifdef __UNIXOS2__

 	st.st_size = elim_cr(content->f_base,st.st_size);

 #endif

 	close(fd);

 	content->f_len = st.st_size+1;

 	content->f_p = content->f_base;

 	content->f_end = content->f_base + st.st_size;

 	*content->f_end = '\0';

 	content->f_line = 0;

 	content->cmdinc_count = 0;

 	content->cmdinc_list = NULL;

 	content->cmdinc_line = 0;

 	return(content);

 }

 void

 setfile_cmdinc(struct filepointer* filep, long count, char** list)

 {

 	filep->cmdinc_count = count;

 	filep->cmdinc_list = list;

 	filep->cmdinc_line = 0;

 }

 void

 freefile(struct filepointer *fp)

 {

 	free(fp->f_base);

 	free(fp);

 }

 char *copy(char *str)

 {

 	char	*p = (char *)malloc(strlen(str) + 1);

 	strcpy(p, str);

 	return(p);

 }

 int

 match(char *str, char **list)

 {

 	int	i;

 	for (i=0; *list; i++, list++)

 		if (strcmp(str, *list) == 0)

 			return(i);

 	return(-1);

 }

 /*

  * Get the next line.  We only return lines beginning with '#' since that

  * is all this program is ever interested in.

  */

 char *getnextline(struct filepointer *filep)

 {

 	char	*p,	/* walking pointer */

 		*eof,	/* end of file pointer */

 		*bol;	/* beginning of line pointer */

 	int	lineno;	/* line number */

 	boolean whitespace = FALSE;

 	/*

 	 * Fake the "-include" line files in form of #include to the

 	 * start of each file.

 	 */

 	if (filep->cmdinc_line < filep->cmdinc_count) {

 		char *inc = filep->cmdinc_list[2 * filep->cmdinc_line + 0];

 		char *buf = filep->cmdinc_list[2 * filep->cmdinc_line + 1];

 		filep->cmdinc_line++;

 		sprintf(buf,"%s%s%s",DASH_INC_PRE,inc,DASH_INC_POST);

 		DBG_PRINT(stderr,"%s\n",buf);

 		return(buf);

 	}

 	p = filep->f_p;

 	eof = filep->f_end;

 	if (p >= eof)

 		return((char *)NULL);

 	lineno = filep->f_line;

 	for (bol = p--; ++p < eof; ) {

 		if ((bol == p) && ((*p == ' ') || (*p == '\t')))

 		{

 			/* Consume leading white-spaces for this line */

 			while (((p+1) < eof) && ((*p == ' ') || (*p == '\t')))

 			{

 				p++;

 				bol++;

 			}

 			whitespace = TRUE;

 		}

 		if (*p == '/' && (p+1) < eof && *(p+1) == '*') {

 			/* Consume C comments */

 			*(p++) = ' ';

 			*(p++) = ' ';

 			while (p < eof && *p) {

 				if (*p == '*' && (p+1) < eof && *(p+1) == '/') {

 					*(p++) = ' ';

 					*(p++) = ' ';

 					break;

 				}

 				if (*p == '\n')

 					lineno++;

 				*(p++) = ' ';

 			}

 			--p;

 		}

 		else if (*p == '/' && (p+1) < eof && *(p+1) == '/') {

 			/* Consume C++ comments */

 			*(p++) = ' ';

 			*(p++) = ' ';

 			while (p < eof && *p) {

 				if (*p == '\\' && (p+1) < eof &&

 				    *(p+1) == '\n') {

 					*(p++) = ' ';

 					lineno++;

 				}

 				else if (*p == '?' && (p+3) < eof &&

 					 *(p+1) == '?' && 

 					 *(p+2) == '/' &&

 					 *(p+3) == '\n') {

 					*(p++) = ' ';

 					*(p++) = ' ';

 					*(p++) = ' ';

 					lineno++;

 				}

 				else if (*p == '\n')

 					break;	/* to process end of line */

 				*(p++) = ' ';

 			}

 			--p;

 		}

 		else if (*p == '\\' && (p+1) < eof && *(p+1) == '\n') {

 			/* Consume backslash line terminations */

 			*(p++) = ' ';

 			*p = ' ';

 			lineno++;

 		}

 		else if (*p == '?' && (p+3) < eof &&

 			 *(p+1) == '?' && *(p+2) == '/' && *(p+3) == '\n') {

 			/* Consume trigraph'ed backslash line terminations */

 			*(p++) = ' ';

 			*(p++) = ' ';

 			*(p++) = ' ';

 			*p = ' ';

 			lineno++;

 		}

 		else if (*p == '\n') {

 			lineno++;

 			if (*bol == '#') {

 				char *cp;

 				*(p++) = '\0';

 				/* punt lines with just # (yacc generated) */

 				for (cp = bol+1; 

 				     *cp && (*cp == ' ' || *cp == '\t'); cp++);

 				if (*cp) goto done;

 				--p;

 			}

 			bol = p+1;

 			whitespace = FALSE;

 		}

 	}

 	if (*bol != '#')

 		bol = NULL;

 done:

 #if !defined(__UNIXOS2__) && !defined(_MSC_VER) && !defined(_WIN32)

 	/* Don't print warnings for system header files */

 	if (bol && whitespace && !strstr(filep->f_name, INCLUDEDIR)) {

 		warning("%s:  non-portable whitespace encountered at line %d\n",

 			filep->f_name, lineno);

 	}

 #endif

 	filep->f_p = p;

 	filep->f_line = lineno;

 #ifdef DEBUG_DUMP

 	if (bol)

 		DBG_PRINT(stderr,"%s\n",bol);

 #endif

 	return(bol);

 }

 /*

  * Strip the file name down to what we want to see in the Makefile.

  * It will have objprefix and objsuffix around it.

  */

 char *base_name(char *file)

 {

 	char	*p;

 	file = copy(file);

 	for(p=file+strlen(file); p>file && *p != '.'; p--) ;

 	if (*p == '.')

 		*p = '\0';

 	return(file);

 }

 #if defined(USG) && !defined(CRAY) && !defined(SVR4) && !defined(__UNIXOS2__) && !defined(clipper) && !defined(__clipper__)

 int rename (char *from, char *to)

 {

     (void) unlink (to);

     if (link (from, to) == 0) {

 	unlink (from);

 	return 0;

     } else {

 	return -1;

     }

 }

 #endif /* USGISH */

 void

 redirect(char *line, char *makefile)

 {

 	struct stat	st;

 	FILE	*fdin, *fdout;

 	char	backup[ BUFSIZ ],

 		buf[ BUFSIZ ];

 	boolean	found = FALSE;

 	int	len;

 	/*

 	 * if makefile is "-" then let it pour onto stdout.

 	 */

 	if (makefile && *makefile == '-' && *(makefile+1) == '\0') {

 		puts(line);

 		return;

 	}

 	/*

 	 * use a default makefile is not specified.

 	 */

 	if (!makefile) {

 		if (stat("Makefile", &st) == 0)

 			makefile = "Makefile";

 		else if (stat("makefile", &st) == 0)

 			makefile = "makefile";

 		else

 			fatalerr("[mM]akefile is not present\n");

 	}

 	else

 	    stat(makefile, &st);

 	if ((fdin = fopen(makefile, "r")) == NULL)

 		fatalerr("cannot open \"%s\"\n", makefile);

 	sprintf(backup, "%s.bak", makefile);

 	unlink(backup);

 #if defined(WIN32) || defined(__UNIXOS2__) || defined(__CYGWIN__)

 	fclose(fdin);

 #endif

 	if (rename(makefile, backup) < 0)

 		fatalerr("cannot rename %s to %s\n", makefile, backup);

 #if defined(WIN32) || defined(__UNIXOS2__) || defined(__CYGWIN__)

 	if ((fdin = fopen(backup, "r")) == NULL)

 		fatalerr("cannot open \"%s\"\n", backup);

 #endif

 	if ((fdout = freopen(makefile, "w", stdout)) == NULL)

 		fatalerr("cannot open \"%s\"\n", backup);

 	len = strlen(line);

 	while (!found && fgets(buf, BUFSIZ, fdin)) {

 		if (*buf == '#' && strncmp(line, buf, len) == 0)

 			found = TRUE;

 		fputs(buf, fdout);

 	}

 	if (!found) {

 		if (verbose)

 		warning("Adding new delimiting line \"%s\" and dependencies...\n",

 			line);

 		puts(line); /* same as fputs(fdout); but with newline */

 	} else if (append) {

 	    while (fgets(buf, BUFSIZ, fdin)) {

 		fputs(buf, fdout);

 	    }

 	}

 	fflush(fdout);

 #if defined(USGISH) || defined(_SEQUENT_) || defined(USE_CHMOD)

 	chmod(makefile, st.st_mode);

 #else

         fchmod(fileno(fdout), st.st_mode);

 #endif /* USGISH */

 }

 void

 fatalerr(char *msg, ...)

 {

 	va_list args;

 	fprintf(stderr, "%s: error:  ", ProgramName);

 	va_start(args, msg);

 	vfprintf(stderr, msg, args);

 	va_end(args);

 	exit (1);

 }

 void

 warning(char *msg, ...)

 {

 	va_list args;

 	fprintf(stderr, "%s: warning:  ", ProgramName);

 	va_start(args, msg);

 	vfprintf(stderr, msg, args);

 	va_end(args);

 }

 void

 warning1(char *msg, ...)

 {

 	va_list args;

 	va_start(args, msg);

 	vfprintf(stderr, msg, args);

 	va_end(args);

 }