usr/src/etc/config/mkmakefile.c

/*      mkmakefile.c    1.26    83/02/21        */

/*
 * Build the makefile for the system, from
 * the information in the files files and the
 * additional files for the machine being compiled to.
 */

#include <stdio.h>
#include <ctype.h>
#include "y.tab.h"
#include "config.h"

#define next_word(fp, wd) \
        { register char *word = get_word(fp); \
          if (word == (char *)EOF) \
                return; \
          else \
                wd = word; \
        }

static  struct file_list *fcur;

/*
 * Lookup a file, by make.
 */
struct file_list *
fl_lookup(file)
        register char *file;
{
        register struct file_list *fp;

        for (fp = ftab ; fp != 0; fp = fp->f_next) {
                if (eq(fp->f_fn, file))
                        return (fp);
        }
        return (0);
}

/*
 * Make a new file list entry
 */
struct file_list *
new_fent()
{
        register struct file_list *fp;

        fp = (struct file_list *) malloc(sizeof *fp);
        fp->f_needs = 0;
        fp->f_next = 0;
        if (fcur == 0)
                fcur = ftab = fp;
        else
                fcur->f_next = fp;
        fcur = fp;
        return (fp);
}

char    *COPTS;

/*
 * Build the makefile from the skeleton
 */
makefile()
{
        FILE *ifp, *ofp;
        char line[BUFSIZ];
        struct opt *op;

        read_files();
        strcpy(line, "../conf/makefile.");
        (void) strcat(line, machinename);
        ifp = fopen(line, "r");
        if (ifp == 0) {
                perror(line);
                exit(1);
        }
        ofp = fopen(path("makefile"), "w");
        if (ofp == 0) {
                perror(path("makefile"));
                exit(1);
        }
#ifdef vax
        if (maxusers == 0) {
                printf("maxusers not specified; 24 assumed\n");
                maxusers = 24;
        } else if (maxusers < 8) {
                printf("minimum of 8 maxusers assumed\n");
                maxusers = 8;
        } else if (maxusers > 128) {
                printf("maxusers truncated to 128\n");
                maxusers = 128;
        }
#endif
#ifdef sun
        if (maxusers == 0) {
                printf("maxusers not specified; 8 assumed\n");
                maxusers = 8;
        } else if (maxusers < 2) {
                printf("minimum of 2 maxusers assumed\n");
                maxusers = 2;
        } else if (maxusers > 32) {
                printf("maxusers truncated to 32\n");
                maxusers = 32;
        }
#endif
        fprintf(ofp, "IDENT=-D%s", raise(ident));
        if (profiling)
                fprintf(ofp, " -DGPROF");
        fprintf(ofp, " -DMAXUSERS=%d", maxusers);
        if (cputype == 0) {
                printf("cpu type must be specified\n");
                exit(1);
        }
        { struct cputype *cp;
          for (cp = cputype; cp; cp = cp->cpu_next)
                fprintf(ofp, " -D%s", cp->cpu_name);
        }
        for (op = opt; op; op = op->op_next)
                if (op->op_value)
                        fprintf(ofp, " -D%s=\"%s\"", op->op_name, op->op_value);
                else
                        fprintf(ofp, " -D%s", op->op_name);
        fprintf(ofp, "\n");
        if (hadtz == 0)
                printf("timezone not specified; gmt assumed\n");
        fprintf(ofp, "PARAM=-DTIMEZONE=%d -DDST=%d\n",
            timezone, dst);
        while (fgets(line, BUFSIZ, ifp) != 0) {
                if (*line == '%')
                        goto percent;
                if (profiling && strncmp(line, "COPTS=", 6) == 0) {
                        register char *cp;

                        fprintf(ofp, "GPROF.EX=/usr/src/lib/libc/csu/gmon.ex\n");
                        cp = index(line, '\n');
                        if (cp)
                                *cp = 0;
                        cp = line + 6;
                        while (*cp && (*cp == ' ' || *cp == '\t'))
                                cp++;
                        COPTS = malloc((unsigned)(strlen(cp) + 1));
                        if (COPTS == 0) {
                                printf("config: out of memory\n");
                                exit(1);
                        }
                        strcpy(COPTS, cp);
                        fprintf(ofp, "%s -pg\n", line);
                        continue;
                }
                fprintf(ofp, "%s", line);
                continue;
        percent:
                if (eq(line, "%OBJS\n"))
                        do_objs(ofp);
                else if (eq(line, "%CFILES\n"))
                        do_cfiles(ofp);
                else if (eq(line, "%RULES\n"))
                        do_rules(ofp);
                else if (eq(line, "%LOAD\n"))
                        do_load(ofp);
                else
                        fprintf(stderr,
                            "Unknown %% construct in generic makefile: %s",
                            line);
        }
        (void) fclose(ifp);
        (void) fclose(ofp);
}

/*
 * Read in the information about files used in making the system.
 * Store it in the ftab linked list.
 */
read_files()
{
        FILE *fp;
        register struct file_list *tp;
        register struct device *dp;
        char *wd, *this, *needs, *devorprof;
        char fname[32];
        int nreqs;
        int first = 1;

        ftab = 0;
        (void) strcpy(fname, "files");
openit:
        fp = fopen(fname, "r");
        if (fp == 0) {
                perror(fname);
                exit(1);
        }
next:
        /* filename     [ standard | optional dev* ] [ device-driver ] */
        wd = get_word(fp);
        if (wd == (char *)EOF) {
                (void) fclose(fp);
                if (first) {
                        (void) sprintf(fname, "files.%s", machinename);
                        first = 0;
                        goto openit;
                }
                return;
        }
        if (wd == 0)
                goto next;
        this = ns(wd);
        next_word(fp, wd);
        if (wd == 0) {
                printf("%s: No type for %s.\n",
                    fname, this);
                exit(1);
        }
        if (fl_lookup(this)) {
                printf("%s: Duplicate file %s.\n",
                    fname, this);
                exit(1);
        }
        nreqs = 0;
        devorprof = "";
        needs = 0;
        if (eq(wd, "standard"))
                goto checkdev;
        if (!eq(wd, "optional")) {
                printf("%s: %s must be optional or standard\n",
                    fname, this);
                exit(1);
        }
nextopt:
        next_word(fp, wd);
        if (wd == 0)
                goto doneopt;
        devorprof = wd;
        if (eq(wd, "device-driver") || eq(wd, "profiling-routine")) {
                next_word(fp, wd);
                goto save;
        }
        nreqs++;
        if (needs == 0)
                needs = ns(wd);
        for (dp = dtab; dp != 0; dp = dp->d_next)
                if (eq(dp->d_name, wd))
                        goto nextopt;
        while ((wd = get_word(fp)) != 0)
                ;
        tp = new_fent();
        tp->f_fn = this;
        tp->f_type = INVISIBLE;
        tp->f_needs = needs;
        goto next;
doneopt:
        if (nreqs == 0) {
                printf("%s: what is %s optional on?\n",
                    fname, this);
                exit(1);
        }
checkdev:
        if (wd) {
                next_word(fp, wd);
                if (wd != 0) {
                        devorprof = wd;
                        next_word(fp, wd);
                }
        }
save:
        if (wd != 0) {
                printf("%s: syntax error describing %s\n",
                    fname, this);
                exit(1);
        }
        if (eq(devorprof, "profiling-routine") && profiling == 0)
                goto next;
        tp = new_fent();
        tp->f_fn = this;
        if (eq(devorprof, "device-driver"))
                tp->f_type = DEVICE;
        else if (eq(devorprof, "profiling-routine"))
                tp->f_type = PROFILING;
        else
                tp->f_type = NORMAL;
        tp->f_needs = needs;
        goto next;
}

do_objs(fp)
        FILE *fp;
{
        register struct file_list *tp;
        register int lpos, len;
        register char *cp, och, *sp;
        char *tail();

        fprintf(fp, "OBJS=");
        lpos = 6;
        for (tp = ftab; tp != 0; tp = tp->f_next) {
                if (tp->f_type == INVISIBLE)
                        continue;
                sp = tail(tp->f_fn);
                cp = sp + (len = strlen(sp)) - 1;
                och = *cp;
                *cp = 'o';
                if (len + lpos > 72) {
                        lpos = 8;
                        fprintf(fp, "\\\n\t");
                }
                fprintf(fp, "%s ", sp);
                lpos += len + 1;
                *cp = och;
        }
        if (lpos != 8)
                putc('\n', fp);
}

do_cfiles(fp)
        FILE *fp;
{
        register struct file_list *tp;
        register int lpos, len;

        fprintf(fp, "CFILES=");
        lpos = 8;
        for (tp = ftab; tp != 0; tp = tp->f_next) {
                if (tp->f_type == INVISIBLE)
                        continue;
                if (tp->f_fn[strlen(tp->f_fn)-1] != 'c')
                        continue;
                if ((len = 3 + strlen(tp->f_fn)) + lpos > 72) {
                        lpos = 8;
                        fprintf(fp, "\\\n\t");
                }
                fprintf(fp, "../%s ", tp->f_fn);
                lpos += len + 1;
        }
        if (lpos != 8)
                putc('\n', fp);
}

char *
tail(fn)
        char *fn;
{
        register char *cp;

        cp = rindex(fn, '/');
        return (cp+1);
}

/*
 * Create the makerules for each file
 * which is part of the system.
 * Devices are processed with the special c2 option -i
 * which avoids any problem areas with i/o addressing
 * (e.g. for the VAX); assembler files are processed by as.
 */
do_rules(f)
        FILE *f;
{
        register char *cp, *np, och, *tp;
        register struct file_list *ftp;

for (ftp = ftab; ftp != 0; ftp = ftp->f_next) {
        if (ftp->f_type == INVISIBLE)
                continue;
        cp = (np = ftp->f_fn) + strlen(ftp->f_fn) - 1;
        och = *cp;
        *cp = '\0';
        fprintf(f, "%so: ../%s%c\n", tail(np), np, och);
        tp = tail(np);
        if (och == 's') {
                fprintf(f, "\t${AS} -o %so ../%ss\n\n", tp, np);
                continue;
        }
        switch (ftp->f_type) {

        case NORMAL:
                switch (machine) {

                case MACHINE_VAX:
                        fprintf(f, "\t${CC} -I. -c -S ${COPTS} ../%sc\n", np);
                        fprintf(f, "\t${C2} %ss | sed -f ../%s/asm.sed |",
                            tp, machinename);
                        fprintf(f, " ${AS} -o %so\n", tp);
                        fprintf(f, "\trm -f %ss\n\n", tp);
                        break;

                case MACHINE_SUN:
                        fprintf(f, "\t${CC} -I. -c -O ${COPTS} ../%sc\n\n", np);
                        break;
                }
                break;

        case DEVICE:
                switch (machine) {

                case MACHINE_VAX:
                        fprintf(f, "\t${CC} -I. -c -S ${COPTS} ../%sc\n", np);
                        fprintf(f,"\t${C2} -i %ss | sed -f ../%s/asm.sed |",
                            tp, machinename);
                        fprintf(f, " ${AS} -o %so\n", tp);
                        fprintf(f, "\trm -f %ss\n\n", tp);
                        break;

                case MACHINE_SUN:
                        fprintf(f, "\t${CC} -I. -c -O ${COPTS} ../%sc\n\n", np);
                }
                break;

        case PROFILING:
                if (!profiling)
                        continue;
                if (COPTS == 0) {
                        fprintf(stderr,
                            "config: COPTS undefined in generic makefile");
                        COPTS = "";
                }
                switch (machine) {

                case MACHINE_VAX:
                        fprintf(f, "\t${CC} -I. -c -S %s ../%sc\n", COPTS, np);
                        fprintf(f, "\tex - %ss < ${GPROF.EX}\n", tp);
                        fprintf(f,
                            "\tsed -f ../vax/asm.sed %ss | ${AS} -o %so\n",
                            tp, tp);
                        fprintf(f, "\trm -f %ss\n\n", tp);
                        break;

                case MACHINE_SUN:
                        fprintf(stderr,
                            "config: don't know how to profile kernel on sun\n");
                        break;
                }
                break;

        default:
                printf("Don't know rules for %s", np);
                break;
        }
        *cp = och;
}
}

/*
 * Create the load strings
 */
do_load(f)
        register FILE *f;
{
        register struct file_list *fl;
        int first = 1;

        for (fl = conf_list; fl != 0; fl = fl->f_next) {
                fprintf(f, "%s: makefile locore.o ${OBJS} param.o",
                    fl->f_needs);
                fprintf(f, " ioconf.o swap%s.o\n", fl->f_fn);
                fprintf(f, "\t@echo loading %s\n\t@rm -f %s\n",
                    fl->f_needs, fl->f_needs);
                if (first) {
                        first = 0;
                        fprintf(f, "\t@sh ../conf/newvers.sh\n");
                        fprintf(f, "\t@${CC} $(CFLAGS) -c vers.c\n");
                }
                switch (machine) {

                case MACHINE_VAX:
                        fprintf(f, "\t@${LD} -n -o %s -e start -x -T 80000000 ",
                                fl->f_needs);
                        fprintf(f, "locore.o ${OBJS} vers.o ioconf.o param.o ");
                        fprintf(f, "swap%s.o\n", fl->f_fn);
                        break;

                case MACHINE_SUN:
                        fprintf(f, "\t@${LD} -o %s -e start -x -T 4000 ",
                                fl->f_needs);
                        fprintf(f, "locore.o ${OBJS} vers.o ioconf.o param.o ");
                        fprintf(f, "swap%s.o\n", fl->f_fn);
                        break;
                }
                fprintf(f, "\t@echo rearranging symbols\n");
                fprintf(f, "\t@-symorder ../%s/symbols.sort %s\n",
                    machinename, fl->f_needs);
                fprintf(f, "\t@size %s\n", fl->f_needs);
                fprintf(f, "\t@chmod 755 %s\n\n", fl->f_needs);
        }
        for (fl = conf_list; fl != 0; fl = fl->f_next) {
                fprintf(f, "swap%s.o: ../%s/swap%s.c\n",
                    fl->f_fn, machinename, fl->f_fn);
                switch (machine) {

                case MACHINE_VAX:
                        fprintf(f, "\t${CC} -I. -c -S ${COPTS}");
                        fprintf(f, " ../%s/swap%s.c\n", machinename, fl->f_fn);
                        fprintf(f, "\t${C2} swap%s.s | sed -f ../%s/asm.sed",
                            fl->f_fn, machinename);
                        fprintf(f, " | ${AS} -o swap%s.o\n",
                            fl->f_fn);
                        fprintf(f, "\trm -f swap%s.s\n\n", fl->f_fn);
                        break;

                case MACHINE_SUN:
                        fprintf(f, "\t${CC} -I. -c -O ${COPTS} ");
                        fprintf(f, "../%s/swap%s.c\n\n", machinename, fl->f_fn);
                        break;
                }
        }
        fprintf(f, "all:");
        for (fl = conf_list; fl != 0; fl = fl->f_next)
                fprintf(f, " %s", fl->f_needs);
        fprintf(f, "\n");
}

char *
raise(str)
        register char *str;
{
        register char *cp = str;

        while (*str) {
                if (islower(*str))
                        *str = toupper(*str);
                str++;
        }
        return (cp);
}