1 /* $NetBSD: mkmakefile.c,v 1.70 2017/06/16 02:01:10 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This software was developed by the Computer Systems Engineering group 8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 9 * contributed to Berkeley. 10 * 11 * All advertising materials mentioning features or use of this software 12 * must display the following acknowledgement: 13 * This product includes software developed by the University of 14 * California, Lawrence Berkeley Laboratories. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 3. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * from: @(#)mkmakefile.c 8.1 (Berkeley) 6/6/93 41 */ 42 43 #if HAVE_NBTOOL_CONFIG_H 44 #include "nbtool_config.h" 45 #endif 46 47 #include <sys/cdefs.h> 48 __RCSID("$NetBSD: mkmakefile.c,v 1.70 2017/06/16 02:01:10 christos Exp $"); 49 50 #include <sys/param.h> 51 #include <ctype.h> 52 #include <errno.h> 53 #include <stdio.h> 54 #include <stdlib.h> 55 #include <string.h> 56 #include <err.h> 57 #include <util.h> 58 #include "defs.h" 59 #include "sem.h" 60 61 /* 62 * Make the Makefile. 63 */ 64 65 static void emitdefs(FILE *); 66 static void emitallfiles(FILE *); 67 68 static void emitofiles(FILE *); 69 static void emitallkobjs(FILE *); 70 static int emitallkobjscb(const char *, void *, void *); 71 static void emitattrkobjs(FILE *); 72 static int emitattrkobjscb(const char *, void *, void *); 73 static void emitkobjs(FILE *); 74 static void emitcfiles(FILE *); 75 static void emitsfiles(FILE *); 76 static void emitrules(FILE *); 77 static void emitload(FILE *); 78 static void emitincludes(FILE *); 79 static void emitappmkoptions(FILE *); 80 static void emitmkoption(FILE *, const char *, const struct nvlist *); 81 static void emitsubs(FILE *, const char *, const char *, int); 82 static int selectopt(const char *, void *); 83 84 int has_build_kernel; 85 86 int 87 mkmakefile(void) 88 { 89 FILE *ifp, *ofp; 90 int lineno; 91 void (*fn)(FILE *); 92 char line[BUFSIZ], ifname[200]; 93 94 /* 95 * Check if conf/Makefile.kern.inc defines "build_kernel". 96 * 97 * (This is usually done by checking "version" in sys/conf/files; 98 * unfortunately the "build_kernel" change done around 2014 Aug didn't 99 * bump that version. Thus this hack.) 100 */ 101 (void)snprintf(ifname, sizeof(ifname), "%s/conf/Makefile.kern.inc", 102 srcdir); 103 if ((ifp = fopen(ifname, "r")) == NULL) { 104 warn("cannot read %s", ifname); 105 goto bad2; 106 } 107 while (fgets(line, sizeof(line), ifp) != NULL) { 108 if (strncmp(line, "build_kernel:", 13) == 0) { 109 has_build_kernel = 1; 110 break; 111 } 112 } 113 (void)fclose(ifp); 114 115 /* 116 * Try a makefile for the port first. 117 */ 118 (void)snprintf(ifname, sizeof(ifname), "%s/arch/%s/conf/Makefile.%s", 119 srcdir, machine, machine); 120 if ((ifp = fopen(ifname, "r")) == NULL) { 121 /* 122 * Try a makefile for the architecture second. 123 */ 124 (void)snprintf(ifname, sizeof(ifname), 125 "%s/arch/%s/conf/Makefile.%s", 126 srcdir, machinearch, machinearch); 127 ifp = fopen(ifname, "r"); 128 } 129 if (ifp == NULL) { 130 warn("cannot read %s", ifname); 131 goto bad2; 132 } 133 134 if ((ofp = fopen("Makefile.tmp", "w")) == NULL) { 135 warn("cannot write Makefile"); 136 goto bad1; 137 } 138 139 emitdefs(ofp); 140 141 lineno = 0; 142 while (fgets(line, sizeof(line), ifp) != NULL) { 143 lineno++; 144 if ((version < 20090214 && line[0] != '%') || line[0] == '#') { 145 fputs(line, ofp); 146 continue; 147 } 148 if (strcmp(line, "%OBJS\n") == 0) 149 fn = Mflag ? emitkobjs : emitofiles; 150 else if (strcmp(line, "%CFILES\n") == 0) 151 fn = emitcfiles; 152 else if (strcmp(line, "%SFILES\n") == 0) 153 fn = emitsfiles; 154 else if (strcmp(line, "%RULES\n") == 0) 155 fn = emitrules; 156 else if (strcmp(line, "%LOAD\n") == 0) 157 fn = emitload; 158 else if (strcmp(line, "%INCLUDES\n") == 0) 159 fn = emitincludes; 160 else if (strcmp(line, "%MAKEOPTIONSAPPEND\n") == 0) 161 fn = emitappmkoptions; 162 else if (strncmp(line, "%VERSION ", sizeof("%VERSION ")-1) == 0) { 163 int newvers; 164 if (sscanf(line, "%%VERSION %d\n", &newvers) != 1) { 165 cfgxerror(ifname, lineno, "syntax error for " 166 "%%VERSION"); 167 } else 168 setversion(newvers); 169 continue; 170 } else { 171 if (version < 20090214) 172 cfgxerror(ifname, lineno, 173 "unknown %% construct ignored: %s", line); 174 else 175 emitsubs(ofp, line, ifname, lineno); 176 continue; 177 } 178 (*fn)(ofp); 179 } 180 181 fflush(ofp); 182 if (ferror(ofp)) 183 goto wrerror; 184 185 if (ferror(ifp)) { 186 warn("error reading %s (at line %d)", ifname, lineno); 187 goto bad; 188 } 189 190 if (fclose(ofp)) { 191 ofp = NULL; 192 goto wrerror; 193 } 194 (void)fclose(ifp); 195 196 if (moveifchanged("Makefile.tmp", "Makefile") != 0) { 197 warn("error renaming Makefile"); 198 goto bad2; 199 } 200 return (0); 201 202 wrerror: 203 warn("error writing Makefile"); 204 bad: 205 if (ofp != NULL) 206 (void)fclose(ofp); 207 bad1: 208 (void)fclose(ifp); 209 /* (void)unlink("Makefile.tmp"); */ 210 bad2: 211 return (1); 212 } 213 214 static void 215 emitmkoption(FILE *fp, const char *ass, const struct nvlist *nv) 216 { 217 const char *p; 218 219 fprintf(fp, "%s%s", nv->nv_name, ass); 220 for (p = nv->nv_str; *p; p++) { 221 if (*p == '\n') 222 fputs(" \\", fp); 223 fputc(*p, fp); 224 } 225 fputc('\n', fp); 226 } 227 228 static void 229 emitsubs(FILE *fp, const char *line, const char *file, int lineno) 230 { 231 char *nextpct; 232 const char *optname; 233 struct nvlist *option; 234 235 while (*line != '\0') { 236 if (*line != '%') { 237 fputc(*line++, fp); 238 continue; 239 } 240 241 line++; 242 nextpct = strchr(line, '%'); 243 if (nextpct == NULL) { 244 cfgxerror(file, lineno, "unbalanced %% or " 245 "unknown construct"); 246 return; 247 } 248 *nextpct = '\0'; 249 250 if (*line == '\0') 251 fputc('%', fp); 252 else { 253 optname = intern(line); 254 if (!DEFINED_OPTION(optname)) { 255 cfgxerror(file, lineno, "unknown option %s", 256 optname); 257 return; 258 } 259 260 if ((option = ht_lookup(opttab, optname)) == NULL) 261 option = ht_lookup(fsopttab, optname); 262 if (option != NULL) 263 fputs(option->nv_str ? option->nv_str : "1", 264 fp); 265 /* 266 * Otherwise it's not a selected option and we don't 267 * output anything. 268 */ 269 } 270 271 line = nextpct + 1; 272 } 273 } 274 275 static void 276 emitdefs(FILE *fp) 277 { 278 struct nvlist *nv; 279 280 fprintf(fp, "KERNEL_BUILD=%s\n", conffile); 281 fputs("IDENT= \\\n", fp); 282 for (nv = options; nv != NULL; nv = nv->nv_next) { 283 284 /* Skip any options output to a header file */ 285 if (DEFINED_OPTION(nv->nv_name)) 286 continue; 287 const char *s = nv->nv_str; 288 fprintf(fp, "\t-D%s%s%s%s \\\n", nv->nv_name, 289 s ? "=\"" : "", 290 s ? s : "", 291 s ? "\"" : ""); 292 } 293 putc('\n', fp); 294 fprintf(fp, "MACHINE=%s\n", machine); 295 296 const char *subdir = ""; 297 if (*srcdir != '/' && *srcdir != '.') { 298 /* 299 * libkern and libcompat "Makefile.inc"s want relative S 300 * specification to begin with '.'. 301 */ 302 subdir = "./"; 303 } 304 fprintf(fp, "S=\t%s%s\n", subdir, srcdir); 305 if (Sflag) { 306 fprintf(fp, ".PATH: $S\n"); 307 fprintf(fp, "___USE_SUFFIX_RULES___=1\n"); 308 } 309 for (nv = mkoptions; nv != NULL; nv = nv->nv_next) 310 emitmkoption(fp, "=", nv); 311 } 312 313 static void 314 emitfile(FILE *fp, struct files *fi) 315 { 316 const char *defprologue = "$S/"; 317 const char *prologue, *prefix, *sep; 318 319 if (Sflag) 320 defprologue = ""; 321 prologue = prefix = sep = ""; 322 if (*fi->fi_path != '/') { 323 prologue = defprologue; 324 if (fi->fi_prefix != NULL) { 325 if (*fi->fi_prefix == '/') 326 prologue = ""; 327 prefix = fi->fi_prefix; 328 sep = "/"; 329 } 330 } 331 fprintf(fp, "%s%s%s%s", prologue, prefix, sep, fi->fi_path); 332 } 333 334 static void 335 emitfilerel(FILE *fp, struct files *fi) 336 { 337 const char *prefix, *sep; 338 339 prefix = sep = ""; 340 if (*fi->fi_path != '/') { 341 if (fi->fi_prefix != NULL) { 342 prefix = fi->fi_prefix; 343 sep = "/"; 344 } 345 } 346 fprintf(fp, "%s%s%s", prefix, sep, fi->fi_path); 347 } 348 349 static void 350 emitofiles(FILE *fp) 351 { 352 353 emitallfiles(fp); 354 fprintf(fp, "#%%OFILES\n"); 355 } 356 357 static void 358 emitkobjs(FILE *fp) 359 { 360 emitallkobjs(fp); 361 emitattrkobjs(fp); 362 } 363 364 static int emitallkobjsweighcb(const char *name, void *v, void *arg); 365 static void weighattr(struct attr *a); 366 static int attrcmp(const void *l, const void *r); 367 368 struct attr **attrbuf; 369 size_t attridx; 370 371 static void 372 emitallkobjs(FILE *fp) 373 { 374 size_t i; 375 376 attrbuf = emalloc(nattrs * sizeof(*attrbuf)); 377 378 ht_enumerate(attrtab, emitallkobjsweighcb, NULL); 379 ht_enumerate(attrtab, emitallkobjscb, NULL); 380 qsort(attrbuf, attridx, sizeof(struct attr *), attrcmp); 381 382 fputs("OBJS= \\\n", fp); 383 for (i = 0; i < attridx; i++) 384 fprintf(fp, "\t%s.ko \\\n", attrbuf[i]->a_name); 385 putc('\n', fp); 386 387 free(attrbuf); 388 } 389 390 static int 391 emitallkobjscb(const char *name, void *v, void *arg) 392 { 393 struct attr *a = v; 394 395 if (ht_lookup(selecttab, name) == NULL) 396 return 0; 397 if (TAILQ_EMPTY(&a->a_files)) 398 return 0; 399 attrbuf[attridx++] = a; 400 /* XXX nattrs tracking is not exact yet */ 401 if (attridx == nattrs) { 402 nattrs *= 2; 403 attrbuf = erealloc(attrbuf, nattrs * sizeof(*attrbuf)); 404 } 405 return 0; 406 } 407 408 static int 409 emitallkobjsweighcb(const char *name, void *v, void *arg) 410 { 411 struct attr *a = v; 412 413 weighattr(a); 414 return 0; 415 } 416 417 static void 418 weighattr(struct attr *a) 419 { 420 struct attrlist *al; 421 422 for (al = a->a_deps; al != NULL; al = al->al_next) { 423 weighattr(al->al_this); 424 } 425 a->a_weight++; 426 } 427 428 static int 429 attrcmp(const void *l, const void *r) 430 { 431 const struct attr * const *a = l, * const *b = r; 432 const int wa = (*a)->a_weight, wb = (*b)->a_weight; 433 return (wa > wb) ? -1 : (wa < wb) ? 1 : 0; 434 } 435 436 static void 437 emitattrkobjs(FILE *fp) 438 { 439 extern struct hashtab *attrtab; 440 441 ht_enumerate(attrtab, emitattrkobjscb, fp); 442 } 443 444 static int 445 emitattrkobjscb(const char *name, void *v, void *arg) 446 { 447 struct attr *a = v; 448 struct files *fi; 449 FILE *fp = arg; 450 451 if (ht_lookup(selecttab, name) == NULL) 452 return 0; 453 if (TAILQ_EMPTY(&a->a_files)) 454 return 0; 455 fputc('\n', fp); 456 fprintf(fp, "# %s (%d)\n", name, a->a_weight); 457 fprintf(fp, "OBJS.%s= \\\n", name); 458 TAILQ_FOREACH(fi, &a->a_files, fi_anext) { 459 fprintf(fp, "\t%s.o \\\n", fi->fi_base); 460 } 461 fputc('\n', fp); 462 fprintf(fp, "%s.ko: ${OBJS.%s}\n", name, name); 463 fprintf(fp, "\t${LINK_O}\n"); 464 return 0; 465 } 466 467 static void 468 emitcfiles(FILE *fp) 469 { 470 471 emitallfiles(fp); 472 fprintf(fp, "#%%CFILES\n"); 473 } 474 475 static void 476 emitsfiles(FILE *fp) 477 { 478 479 emitallfiles(fp); 480 fprintf(fp, "#%%SFILES\n"); 481 } 482 483 static void 484 emitallfiles(FILE *fp) 485 { 486 struct files *fi; 487 static int called; 488 int i; 489 int found = 0; 490 491 if (called++ != 0) 492 return; 493 for (i = 0; i < (int)nselfiles; i++) { 494 fi = selfiles[i]; 495 if (found++ == 0) 496 fprintf(fp, "ALLFILES= \\\n"); 497 putc('\t', fp); 498 emitfilerel(fp, fi); 499 fputs(" \\\n", fp); 500 } 501 fputc('\n', fp); 502 } 503 504 /* 505 * Emit the make-rules. 506 */ 507 static void 508 emitrules(FILE *fp) 509 { 510 struct files *fi; 511 int i; 512 int found = 0; 513 514 for (i = 0; i < (int)nselfiles; i++) { 515 fi = selfiles[i]; 516 if (fi->fi_mkrule == NULL) 517 continue; 518 fprintf(fp, "%s.o: ", fi->fi_base); 519 emitfile(fp, fi); 520 putc('\n', fp); 521 fprintf(fp, "\t%s\n\n", fi->fi_mkrule); 522 found++; 523 } 524 if (found == 0) 525 fprintf(fp, "#%%RULES\n"); 526 } 527 528 /* 529 * Emit the load commands. 530 * 531 * This function is not to be called `spurt'. 532 */ 533 static void 534 emitload(FILE *fp) 535 { 536 struct config *cf; 537 int found = 0; 538 539 /* 540 * Generate the backward-compatible "build_kernel" rule if 541 * sys/conf/Makefile.kern.inc doesn't define any (pre-2014 Aug). 542 */ 543 if (has_build_kernel == 0) { 544 fprintf(fp, "build_kernel: .USE\n" 545 "\t${SYSTEM_LD_HEAD}\n" 546 "\t${SYSTEM_LD}%s\n" 547 "\t${SYSTEM_LD_TAIL}\n" 548 "\n", 549 Sflag ? "" : " swap${.TARGET}.o"); 550 } 551 /* 552 * Generate per-kernel rules. 553 */ 554 TAILQ_FOREACH(cf, &allcf, cf_next) { 555 char swapobj[100]; 556 557 if (Sflag) { 558 swapobj[0] = '\0'; 559 } else { 560 (void)snprintf(swapobj, sizeof(swapobj), " swap%s.o", 561 cf->cf_name); 562 } 563 fprintf(fp, "KERNELS+=%s\n", cf->cf_name); 564 found = 1; 565 } 566 if (found == 0) 567 fprintf(fp, "#%%LOAD\n"); 568 } 569 570 /* 571 * Emit include headers (for any prefixes encountered) 572 */ 573 static void 574 emitincludes(FILE *fp) 575 { 576 struct prefix *pf; 577 578 SLIST_FOREACH(pf, &allprefixes, pf_next) { 579 const char *prologue = (*pf->pf_prefix == '/') ? "" : "$S/"; 580 581 fprintf(fp, "EXTRA_INCLUDES+=\t-I%s%s\n", 582 prologue, pf->pf_prefix); 583 } 584 } 585 586 /* 587 * Emit appending makeoptions. 588 */ 589 static void 590 emitappmkoptions(FILE *fp) 591 { 592 struct nvlist *nv; 593 struct condexpr *cond; 594 595 for (nv = appmkoptions; nv != NULL; nv = nv->nv_next) 596 fprintf(fp, "%s+=%s\n", nv->nv_name, nv->nv_str); 597 598 for (nv = condmkoptions; nv != NULL; nv = nv->nv_next) { 599 cond = nv->nv_ptr; 600 if (expr_eval(cond, selectopt, NULL)) 601 emitmkoption(fp, "+=", nv); 602 condexpr_destroy(cond); 603 nv->nv_ptr = NULL; 604 } 605 } 606 607 static int 608 /*ARGSUSED*/ 609 selectopt(const char *name, void *context) 610 { 611 612 return (ht_lookup(selecttab, strtolower(name)) != NULL); 613 } 614