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Annotation of 43BSDTahoe/etc/config/main.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1980 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted
        !             6:  * provided that the above copyright notice and this paragraph are
        !             7:  * duplicated in all such forms and that any documentation,
        !             8:  * advertising materials, and other materials related to such
        !             9:  * distribution and use acknowledge that the software was developed
        !            10:  * by the University of California, Berkeley.  The name of the
        !            11:  * University may not be used to endorse or promote products derived
        !            12:  * from this software without specific prior written permission.
        !            13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            16:  */
        !            17: 
        !            18: #ifndef lint
        !            19: char copyright[] =
        !            20: "@(#) Copyright (c) 1980 Regents of the University of California.\n\
        !            21:  All rights reserved.\n";
        !            22: #endif /* not lint */
        !            23: 
        !            24: #ifndef lint
        !            25: static char sccsid[] = "@(#)main.c     5.9 (Berkeley) 6/18/88";
        !            26: #endif /* not lint */
        !            27: 
        !            28: #include <sys/types.h>
        !            29: #include <sys/stat.h>
        !            30: #include <sys/file.h>
        !            31: #include <stdio.h>
        !            32: #include <ctype.h>
        !            33: #include "y.tab.h"
        !            34: #include "config.h"
        !            35: 
        !            36: static char *PREFIX;
        !            37: 
        !            38: /*
        !            39:  * Config builds a set of files for building a UNIX
        !            40:  * system given a description of the desired system.
        !            41:  */
        !            42: main(argc, argv)
        !            43:        int argc;
        !            44:        char **argv;
        !            45: {
        !            46: 
        !            47:        extern char *optarg;
        !            48:        extern int optind;
        !            49:        struct stat buf;
        !            50:        int ch;
        !            51:        char *p;
        !            52: 
        !            53:        while ((ch = getopt(argc, argv, "p")) != EOF)
        !            54:                switch((char)ch) {
        !            55:                case 'p':
        !            56:                        profiling++;
        !            57:                        break;
        !            58:                case '?':
        !            59:                default:
        !            60:                        goto usage;
        !            61:                }
        !            62:        argc -= optind;
        !            63:        argv += optind;
        !            64: 
        !            65:        if (argc != 1) {
        !            66: usage:         fputs("usage: config [-p] sysname\n", stderr);
        !            67:                exit(1);
        !            68:        }
        !            69: 
        !            70:        if (freopen(PREFIX = *argv, "r", stdin) == NULL) {
        !            71:                perror(PREFIX);
        !            72:                exit(2);
        !            73:        }
        !            74:        if (stat(p = path((char *)NULL), &buf)) {
        !            75:                if (mkdir(p, 0755)) {
        !            76:                        perror(p);
        !            77:                        exit(2);
        !            78:                }
        !            79:        }
        !            80:        else if ((buf.st_mode & S_IFMT) != S_IFDIR) {
        !            81:                fprintf(stderr, "config: %s isn't a directory.\n", p);
        !            82:                exit(2);
        !            83:        }
        !            84: 
        !            85:        dtab = NULL;
        !            86:        confp = &conf_list;
        !            87:        if (yyparse())
        !            88:                exit(3);
        !            89:        switch (machine) {
        !            90: 
        !            91:        case MACHINE_VAX:
        !            92:                vax_ioconf();           /* Print ioconf.c */
        !            93:                ubglue();               /* Create ubglue.s */
        !            94:                break;
        !            95: 
        !            96:        case MACHINE_TAHOE:
        !            97:                tahoe_ioconf();
        !            98:                vbglue();
        !            99:                break;
        !           100: 
        !           101:        default:
        !           102:                printf("Specify machine type, e.g. ``machine vax''\n");
        !           103:                exit(1);
        !           104:        }
        !           105:        /*
        !           106:         * make symbolic links in compilation directory
        !           107:         * for "sys" (to make genassym.c work along with #include <sys/xxx>)
        !           108:         * and similarly for "machine".
        !           109:         */
        !           110:        {
        !           111:        char xxx[80];
        !           112: 
        !           113:        (void) symlink("../h", path("sys"));
        !           114:        (void) sprintf(xxx, "../%s", machinename);
        !           115:        (void) symlink(xxx, path("machine"));
        !           116:        }
        !           117:        makefile();                     /* build Makefile */
        !           118:        headers();                      /* make a lot of .h files */
        !           119:        swapconf();                     /* swap config files */
        !           120:        printf("Don't forget to run \"make depend\"\n");
        !           121:        exit(0);
        !           122: }
        !           123: 
        !           124: /*
        !           125:  * get_word
        !           126:  *     returns EOF on end of file
        !           127:  *     NULL on end of line
        !           128:  *     pointer to the word otherwise
        !           129:  */
        !           130: char *
        !           131: get_word(fp)
        !           132:        register FILE *fp;
        !           133: {
        !           134:        static char line[80];
        !           135:        register int ch;
        !           136:        register char *cp;
        !           137: 
        !           138:        while ((ch = getc(fp)) != EOF)
        !           139:                if (ch != ' ' && ch != '\t')
        !           140:                        break;
        !           141:        if (ch == EOF)
        !           142:                return ((char *)EOF);
        !           143:        if (ch == '\n')
        !           144:                return (NULL);
        !           145:        cp = line;
        !           146:        *cp++ = ch;
        !           147:        while ((ch = getc(fp)) != EOF) {
        !           148:                if (isspace(ch))
        !           149:                        break;
        !           150:                *cp++ = ch;
        !           151:        }
        !           152:        *cp = 0;
        !           153:        if (ch == EOF)
        !           154:                return ((char *)EOF);
        !           155:        (void) ungetc(ch, fp);
        !           156:        return (line);
        !           157: }
        !           158: 
        !           159: /*
        !           160:  * prepend the path to a filename
        !           161:  */
        !           162: char *
        !           163: path(file)
        !           164:        char *file;
        !           165: {
        !           166:        register char *cp;
        !           167: 
        !           168:        cp = malloc((unsigned)(strlen(PREFIX)+strlen(file)+5));
        !           169:        (void) strcpy(cp, "../");
        !           170:        (void) strcat(cp, PREFIX);
        !           171:        if (file) {
        !           172:                (void) strcat(cp, "/");
        !           173:                (void) strcat(cp, file);
        !           174:        }
        !           175:        return (cp);
        !           176: }

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