6dce2e2bec
eliminates the need to unconditionally rebuild vers.o and subsequently to relink the kernel every time you type make, even if you just finished one.
508 lines
12 KiB
C
508 lines
12 KiB
C
/* $NetBSD: mkmakefile.c,v 1.52 2001/12/09 16:04:04 atatat Exp $ */
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/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Lawrence Berkeley Laboratories.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)mkmakefile.c 8.1 (Berkeley) 6/6/93
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*/
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#include <sys/param.h>
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#include <ctype.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "config.h"
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#include "sem.h"
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/*
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* Make the Makefile.
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*/
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static const char *srcpath(struct files *);
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static const char *prefix_prologue(const char *);
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static int emitdefs(FILE *);
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static int emitfiles(FILE *, int, int);
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static int emitobjs(FILE *);
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static int emitcfiles(FILE *);
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static int emitsfiles(FILE *);
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static int emitrules(FILE *);
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static int emitload(FILE *);
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static int emitincludes(FILE *);
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int
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mkmakefile(void)
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{
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FILE *ifp, *ofp;
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int lineno;
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int (*fn)(FILE *);
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char *ifname;
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char line[BUFSIZ], buf[200];
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/* Try a makefile for the port first.
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*/
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(void)sprintf(buf, "arch/%s/conf/Makefile.%s", machine, machine);
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ifname = sourcepath(buf);
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if ((ifp = fopen(ifname, "r")) == NULL) {
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/* Try a makefile for the architecture second.
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*/
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(void)sprintf(buf, "arch/%s/conf/Makefile.%s", machinearch,
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machinearch);
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ifname = sourcepath(buf);
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}
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if ((ifp = fopen(ifname, "r")) == NULL) {
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(void)fprintf(stderr, "config: cannot read %s: %s\n",
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ifname, strerror(errno));
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free(ifname);
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return (1);
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}
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if ((ofp = fopen("Makefile", "w")) == NULL) {
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(void)fprintf(stderr, "config: cannot write Makefile: %s\n",
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strerror(errno));
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free(ifname);
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return (1);
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}
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if (emitdefs(ofp) != 0)
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goto wrerror;
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lineno = 0;
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while (fgets(line, sizeof(line), ifp) != NULL) {
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lineno++;
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if (line[0] != '%') {
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if (fputs(line, ofp) < 0)
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goto wrerror;
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continue;
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}
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if (strcmp(line, "%OBJS\n") == 0)
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fn = emitobjs;
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else if (strcmp(line, "%CFILES\n") == 0)
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fn = emitcfiles;
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else if (strcmp(line, "%SFILES\n") == 0)
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fn = emitsfiles;
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else if (strcmp(line, "%RULES\n") == 0)
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fn = emitrules;
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else if (strcmp(line, "%LOAD\n") == 0)
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fn = emitload;
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else if (strcmp(line, "%INCLUDES\n") == 0)
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fn = emitincludes;
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else {
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xerror(ifname, lineno,
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"unknown %% construct ignored: %s", line);
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continue;
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}
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if ((*fn)(ofp))
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goto wrerror;
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}
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if (ferror(ifp)) {
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(void)fprintf(stderr,
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"config: error reading %s (at line %d): %s\n",
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ifname, lineno, strerror(errno));
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goto bad;
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/* (void)unlink("Makefile"); */
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free(ifname);
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return (1);
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}
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if (fclose(ofp)) {
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ofp = NULL;
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goto wrerror;
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}
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(void)fclose(ifp);
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free(ifname);
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return (0);
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wrerror:
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(void)fprintf(stderr, "config: error writing Makefile: %s\n",
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strerror(errno));
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bad:
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if (ofp != NULL)
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(void)fclose(ofp);
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/* (void)unlink("Makefile"); */
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free(ifname);
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return (1);
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}
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/*
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* Return (possibly in a static buffer) the name of the `source' for a
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* file. If we have `options source', or if the file is marked `always
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* source', this is always the path from the `file' line; otherwise we
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* get the .o from the obj-directory.
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*/
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static const char *
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srcpath(struct files *fi)
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{
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#if 1
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/* Always have source, don't support object dirs for kernel builds. */
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return (fi->fi_path);
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#else
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static char buf[MAXPATHLEN];
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if (have_source || (fi->fi_flags & FI_ALWAYSSRC) != 0)
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return (fi->fi_path);
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if (objpath == NULL) {
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error("obj-directory not set");
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return (NULL);
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}
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(void)snprintf(buf, sizeof buf, "%s/%s.o", objpath, fi->fi_base);
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return (buf);
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#endif
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}
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static const char *
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prefix_prologue(const char *path)
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{
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if (*path == '/')
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return ("");
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else
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return ("$S/");
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}
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static int
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emitdefs(FILE *fp)
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{
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struct nvlist *nv;
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char *sp;
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if (fputs("IDENT=", fp) < 0)
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return (1);
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sp = "";
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for (nv = options; nv != NULL; nv = nv->nv_next) {
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/* skip any options output to a header file */
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if (DEFINED_OPTION(nv->nv_name))
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continue;
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if (fprintf(fp, "%s-D%s", sp, nv->nv_name) < 0)
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return 1;
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if (nv->nv_str)
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if (fprintf(fp, "=\"%s\"", nv->nv_str) < 0)
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return 1;
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sp = " ";
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}
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if (putc('\n', fp) < 0)
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return (1);
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if (fprintf(fp, "PARAM=-DMAXUSERS=%d\n", maxusers) < 0)
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return (1);
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if (fprintf(fp, "MACHINE=%s\n", machine) < 0)
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return (1);
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if (*srcdir == '/' || *srcdir == '.') {
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if (fprintf(fp, "S=\t%s\n", srcdir) < 0)
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return (1);
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} else {
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/*
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* libkern and libcompat "Makefile.inc"s want relative S
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* specification to begin with '.'.
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*/
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if (fprintf(fp, "S=\t./%s\n", srcdir) < 0)
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return (1);
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}
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for (nv = mkoptions; nv != NULL; nv = nv->nv_next)
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if (fprintf(fp, "%s=%s\n", nv->nv_name, nv->nv_str) < 0)
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return (1);
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return (0);
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}
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static int
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emitobjs(FILE *fp)
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{
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struct files *fi;
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struct objects *oi;
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int lpos, len, sp;
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if (fputs("OBJS=", fp) < 0)
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return (1);
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sp = '\t';
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lpos = 7;
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for (fi = allfiles; fi != NULL; fi = fi->fi_next) {
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if ((fi->fi_flags & FI_SEL) == 0)
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continue;
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len = strlen(fi->fi_base) + 2;
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if (lpos + len > 72) {
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if (fputs(" \\\n", fp) < 0)
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return (1);
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sp = '\t';
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lpos = 7;
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}
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if (fprintf(fp, "%c%s.o", sp, fi->fi_base) < 0)
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return (1);
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lpos += len + 1;
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sp = ' ';
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}
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for (oi = allobjects; oi != NULL; oi = oi->oi_next) {
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if ((oi->oi_flags & OI_SEL) == 0)
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continue;
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len = strlen(oi->oi_path);
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if (*oi->oi_path != '/') {
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len += 3; /* "$S/" */
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if (oi->oi_prefix != NULL)
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len += strlen(oi->oi_prefix) + 1;
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}
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if (lpos + len > 72) {
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if (fputs(" \\\n", fp) < 0)
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return (1);
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sp = '\t';
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lpos = 7;
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}
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if (*oi->oi_path == '/') {
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if (fprintf(fp, "%c%s", sp, oi->oi_path) < 0)
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return (1);
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} else {
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if (oi->oi_prefix != NULL) {
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if (fprintf(fp, "%c%s%s/%s", sp,
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prefix_prologue(oi->oi_prefix),
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oi->oi_prefix, oi->oi_path) < 0)
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return (1);
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} else {
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if (fprintf(fp, "%c$S/%s", sp, oi->oi_path) < 0)
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return (1);
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}
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}
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lpos += len + 1;
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sp = ' ';
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}
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if (putc('\n', fp) < 0)
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return (1);
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return (0);
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}
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static int
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emitcfiles(FILE *fp)
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{
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return (emitfiles(fp, 'c', 0));
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}
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static int
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emitsfiles(FILE *fp)
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{
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return (emitfiles(fp, 's', 1));
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}
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static int
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emitfiles(FILE *fp, int suffix, int upper_suffix)
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{
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struct files *fi;
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struct config *cf;
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int lpos, len, sp;
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const char *fpath;
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char swapname[100];
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if (fprintf(fp, "%cFILES=", toupper(suffix)) < 0)
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return (1);
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sp = '\t';
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lpos = 7;
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for (fi = allfiles; fi != NULL; fi = fi->fi_next) {
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if ((fi->fi_flags & FI_SEL) == 0)
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continue;
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if ((fpath = srcpath(fi)) == NULL)
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return (1);
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len = strlen(fpath);
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if (! ((fpath[len - 1] == suffix) ||
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(upper_suffix && fpath[len - 1] == toupper(suffix))))
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continue;
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if (*fpath != '/') {
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len += 3; /* "$S/" */
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if (fi->fi_prefix != NULL)
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len += strlen(fi->fi_prefix) + 1;
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}
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if (lpos + len > 72) {
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if (fputs(" \\\n", fp) < 0)
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return (1);
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sp = '\t';
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lpos = 7;
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}
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if (*fi->fi_path == '/') {
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if (fprintf(fp, "%c%s", sp, fi->fi_path) < 0)
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return (1);
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} else {
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if (fi->fi_prefix != NULL) {
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if (fprintf(fp, "%c%s%s/%s", sp,
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prefix_prologue(fi->fi_prefix),
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fi->fi_prefix, fi->fi_path) < 0)
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return (1);
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} else {
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if (fprintf(fp, "%c$S/%s", sp, fi->fi_path) < 0)
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return (1);
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}
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}
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lpos += len + 1;
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sp = ' ';
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}
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/*
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* The allfiles list does not include the configuration-specific
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* C source files. These files should be eliminated someday, but
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* for now, we have to add them to ${CFILES} (and only ${CFILES}).
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*/
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if (suffix == 'c') {
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for (cf = allcf; cf != NULL; cf = cf->cf_next) {
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(void)sprintf(swapname, "swap%s.c", cf->cf_name);
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len = strlen(swapname);
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if (lpos + len > 72) {
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if (fputs(" \\\n", fp) < 0)
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return (1);
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sp = '\t';
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lpos = 7;
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}
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if (fprintf(fp, "%c%s", sp, swapname) < 0)
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return (1);
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lpos += len + 1;
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sp = ' ';
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}
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}
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if (putc('\n', fp) < 0)
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return (1);
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return (0);
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}
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/*
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* Emit the make-rules.
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*/
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static int
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emitrules(FILE *fp)
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{
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struct files *fi;
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const char *cp, *fpath;
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int ch;
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char buf[200];
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for (fi = allfiles; fi != NULL; fi = fi->fi_next) {
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if ((fi->fi_flags & FI_SEL) == 0)
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continue;
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if ((fpath = srcpath(fi)) == NULL)
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return (1);
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if (*fpath == '/') {
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if (fprintf(fp, "%s.o: %s\n", fi->fi_base, fpath) < 0)
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return (1);
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} else {
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if (fi->fi_prefix != NULL) {
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if (fprintf(fp, "%s.o: %s%s/%s\n", fi->fi_base,
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prefix_prologue(fi->fi_prefix),
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fi->fi_prefix, fpath) < 0)
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return (1);
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} else {
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if (fprintf(fp, "%s.o: $S/%s\n", fi->fi_base,
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fpath) < 0)
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return (1);
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}
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}
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if ((cp = fi->fi_mkrule) == NULL) {
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cp = "NORMAL";
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ch = fpath[strlen(fpath) - 1];
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if (islower(ch))
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ch = toupper(ch);
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(void)sprintf(buf, "${%s_%c}", cp, ch);
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cp = buf;
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}
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if (fprintf(fp, "\t%s\n\n", cp) < 0)
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return (1);
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}
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return (0);
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}
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/*
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* Emit the load commands.
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*
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* This function is not to be called `spurt'.
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*/
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static int
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emitload(FILE *fp)
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{
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struct config *cf;
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const char *nm, *swname;
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if (fputs(".MAIN: all\nall:", fp) < 0)
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return (1);
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for (cf = allcf; cf != NULL; cf = cf->cf_next) {
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if (fprintf(fp, " %s", cf->cf_name) < 0)
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return (1);
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}
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if (fputs("\n\n", fp) < 0)
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return (1);
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for (cf = allcf; cf != NULL; cf = cf->cf_next) {
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nm = cf->cf_name;
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swname =
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cf->cf_root != NULL ? cf->cf_name : "generic";
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if (fprintf(fp, "KERNELS+=%s\n", nm) < 0)
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return (1);
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if (fprintf(fp, "SWAP_OBJ%s=swap%s.o\n", nm, swname) < 0)
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return (1);
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if (fprintf(fp, "%s: ${SYSTEM_DEP} swap%s.o vers.o", nm,
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swname) < 0)
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return (1);
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if (fprintf(fp, "\n\
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\t${SYSTEM_LD_HEAD}\n\
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\t${SYSTEM_LD} swap%s.o\n\
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\t${SYSTEM_LD_TAIL}\n\
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\n\
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swap%s.o: ", swname, swname) < 0)
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return (1);
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if (cf->cf_root != NULL) {
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if (fprintf(fp, "swap%s.c\n", nm) < 0)
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return (1);
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} else {
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if (fprintf(fp, "$S/arch/%s/%s/swapgeneric.c\n",
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machine, machine) < 0)
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return (1);
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}
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if (fputs("\t${NORMAL_C}\n\n", fp) < 0)
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return (1);
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}
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return (0);
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}
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/*
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* Emit include headers (for any prefixes encountered)
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*/
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static int
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emitincludes(FILE *fp)
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{
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struct prefix *pf;
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for (pf = allprefixes; pf != NULL; pf = pf->pf_next) {
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if (fprintf(fp, "INCLUDES+=\t-I%s%s\n",
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prefix_prologue(pf->pf_prefix), pf->pf_prefix) < 0)
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return (1);
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}
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return (0);
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}
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