1
2 /*
3 * CDDL HEADER START
4 *
5 * The contents of this file are subject to the terms of the
6 * Common Development and Distribution License (the "License").
7 * You may not use this file except in compliance with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22
23 /*
24 * Copyright 2018, Richard Lowe.
25 */
26 /*
27 * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
28 * Use is subject to license terms.
29 */
30
31 /*
32 * Wrapper for the GNU C compiler to make it accept the Sun C compiler
33 * arguments where possible.
34 *
35 * Since the translation is inexact, this is something of a work-in-progress.
36 *
37 */
38
39 /* If you modify this file, you must increment CW_VERSION */
40 #define CW_VERSION "3.0"
41
42 /*
43 * -# Verbose mode
44 * -### Show compiler commands built by driver, no compilation
45 * -A<name[(tokens)]> Preprocessor predicate assertion
46 * -B<[static|dynamic]> Specify dynamic or static binding
47 * -C Prevent preprocessor from removing comments
48 * -c Compile only - produce .o files, suppress linking
49 * -cg92 Alias for -xtarget=ss1000
50 * -D<name[=token]> Associate name with token as if by #define
51 * -d[y|n] dynamic [-dy] or static [-dn] option to linker
52 * -E Compile source through preprocessor only, output to stdout
53 * -erroff=<t> Suppress warnings specified by tags t(%none, %all, <tag list>)
54 * -errtags=<a> Display messages with tags a(no, yes)
55 * -errwarn=<t> Treats warnings specified by tags t(%none, %all, <tag list>)
56 * as errors
57 * -fast Optimize using a selection of options
58 * -fd Report old-style function definitions and declarations
59 * -fnonstd Initialize floating-point hardware to non-standard preferences
60 * -fns[=<yes|no>] Select non-standard floating point mode
61 * -fprecision=<p> Set FP rounding precision mode p(single, double, extended)
62 * -fround=<r> Select the IEEE rounding mode in effect at startup
63 * -fsimple[=<n>] Select floating-point optimization preferences <n>
64 * -fsingle Use single-precision arithmetic (-Xt and -Xs modes only)
65 * -ftrap=<t> Select floating-point trapping mode in effect at startup
66 * -fstore force floating pt. values to target precision on assignment
67 * -G Build a dynamic shared library
68 * -g Compile for debugging
69 * -H Print path name of each file included during compilation
70 * -h <name> Assign <name> to generated dynamic shared library
71 * -I<dir> Add <dir> to preprocessor #include file search path
72 * -i Passed to linker to ignore any LD_LIBRARY_PATH setting
73 * -keeptmp Keep temporary files created during compilation
74 * -L<dir> Pass to linker to add <dir> to the library search path
75 * -l<name> Link with library lib<name>.a or lib<name>.so
76 * -mc Remove duplicate strings from .comment section of output files
77 * -mr Remove all strings from .comment section of output files
78 * -mr,"string" Remove all strings and append "string" to .comment section
79 * -mt Specify options needed when compiling multi-threaded code
80 * -native Find available processor, generate code accordingly
81 * -nofstore Do not force floating pt. values to target precision
82 * on assignment
83 * -norunpath Do not build in a runtime path for shared libraries
84 * -O Use default optimization level (-xO2 or -xO3. Check man page.)
85 * -o <outputfile> Set name of output file to <outputfile>
86 * -P Compile source through preprocessor only, output to .i file
87 * -p Compile for profiling with prof
88 * -Q[y|n] Emit/don't emit identification info to output file
89 * -R<dir[:dir]> Build runtime search path list into executable
90 * -S Compile and only generate assembly code (.s)
91 * -s Strip symbol table from the executable file
92 * -t Turn off duplicate symbol warnings when linking
93 * -U<name> Delete initial definition of preprocessor symbol <name>
94 * -V Report version number of each compilation phase
95 * -v Do stricter semantic checking
96 * -W<c>,<arg> Pass <arg> to specified component <c> (a,l,m,p,0,2,h,i,u)
97 * -w Suppress compiler warning messages
98 * -Xa Compile assuming ANSI C conformance, allow K & R extensions
99 * (default mode)
100 * -Xs Compile assuming (pre-ANSI) K & R C style code
101 * -Xt Compile assuming K & R conformance, allow ANSI C
102 * -xarch=<a> Specify target architecture instruction set
103 * -xbuiltin[=<b>] When profitable inline, or substitute intrinisic functions
104 * for system functions, b={%all,%none}
105 * -xCC Accept C++ style comments
106 * -xchip=<c> Specify the target processor for use by the optimizer
107 * -xcode=<c> Generate different code for forming addresses
108 * -xcrossfile[=<n>] Enable optimization and inlining across source files,
109 * n={0|1}
110 * -xe Perform only syntax/semantic checking, no code generation
111 * -xF Compile for later mapfile reordering or unused section
112 * elimination
113 * -xhelp=<f> Display on-line help information f(flags, readme, errors)
114 * -xildoff Cancel -xildon
115 * -xildon Enable use of the incremental linker, ild
116 * -xinline=[<a>,...,<a>] Attempt inlining of specified user routines,
117 * <a>={%auto,func,no%func}
118 * -xlibmieee Force IEEE 754 return values for math routines in
119 * exceptional cases
120 * -xlibmil Inline selected libm math routines for optimization
121 * -xlic_lib=sunperf Link in the Sun supplied performance libraries
122 * -xlicinfo Show license server information
123 * -xmaxopt=[off,1,2,3,4,5] maximum optimization level allowed on #pragma opt
124 * -xO<n> Generate optimized code (n={1|2|3|4|5})
125 * -xP Print prototypes for function definitions
126 * -xprofile=<p> Collect data for a profile or use a profile to optimize
127 * <p>={{collect,use}[:<path>],tcov}
128 * -xregs=<r> Control register allocation
129 * -xs Allow debugging without object (.o) files
130 * -xsb Compile for use with the WorkShop source browser
131 * -xsbfast Generate only WorkShop source browser info, no compilation
132 * -xsfpconst Represent unsuffixed floating point constants as single
133 * precision
134 * -xspace Do not do optimizations that increase code size
135 * -xstrconst Place string literals into read-only data segment
136 * -xtarget=<t> Specify target system for optimization
137 * -xtemp=<dir> Set directory for temporary files to <dir>
138 * -xtime Report the execution time for each compilation phase
139 * -xunroll=n Enable unrolling loops n times where possible
140 * -Y<c>,<dir> Specify <dir> for location of component <c> (a,l,m,p,0,h,i,u)
141 * -YA,<dir> Change default directory searched for components
142 * -YI,<dir> Change default directory searched for include files
143 * -YP,<dir> Change default directory for finding libraries files
144 * -YS,<dir> Change default directory for startup object files
145 */
146
147 /*
148 * Translation table:
149 */
150 /*
151 * -# -v
152 * -### error
153 * -A<name[(tokens)]> pass-thru
154 * -B<[static|dynamic]> pass-thru (syntax error for anything else)
155 * -C pass-thru
156 * -c pass-thru
157 * -cg92 -m32 -mcpu=v8 -mtune=supersparc (SPARC only)
158 * -D<name[=token]> pass-thru
159 * -dy or -dn -Wl,-dy or -Wl,-dn
160 * -E pass-thru
161 * -erroff=E_EMPTY_TRANSLATION_UNIT ignore
162 * -errtags=%all -Wall
163 * -errwarn=%all -Werror else -Wno-error
164 * -fast error
165 * -fd error
166 * -fnonstd error
167 * -fns[=<yes|no>] error
168 * -fprecision=<p> error
169 * -fround=<r> error
170 * -fsimple[=<n>] error
171 * -fsingle[=<n>] error
172 * -ftrap=<t> error
173 * -fstore error
174 * -G pass-thru
175 * -g pass-thru
176 * -H pass-thru
177 * -h <name> pass-thru
178 * -I<dir> pass-thru
179 * -i pass-thru
180 * -keeptmp -save-temps
181 * -L<dir> pass-thru
182 * -l<name> pass-thru
183 * -mc error
184 * -mr error
185 * -mr,"string" error
186 * -mt -D_REENTRANT
187 * -native error
188 * -nofstore error
189 * -nolib -nodefaultlibs
190 * -norunpath ignore
191 * -O -O1 (Check the man page to be certain)
192 * -o <outputfile> pass-thru
193 * -P -E -o filename.i (or error)
194 * -p pass-thru
195 * -Q[y|n] error
196 * -R<dir[:dir]> pass-thru
197 * -S pass-thru
198 * -s -Wl,-s
199 * -t -Wl,-t
200 * -U<name> pass-thru
201 * -V --version
202 * -v -Wall
203 * -Wa,<arg> pass-thru
204 * -Wp,<arg> pass-thru except -xc99=<a>
205 * -Wl,<arg> pass-thru
206 * -W{m,0,2,h,i,u> error/ignore
207 * -xmodel=kernel -ffreestanding -mcmodel=kernel -mno-red-zone
208 * -Wu,-save_args -msave-args
209 * -w pass-thru
210 * -Xa -std=iso9899:199409 or -ansi
211 * -Xt error
212 * -Xs -traditional -std=c89
213 * -xarch=<a> table
214 * -xbuiltin[=<b>] -fbuiltin (-fno-builtin otherwise)
215 * -xCC ignore
216 * -xchip=<c> table
217 * -xcode=<c> table
218 * -xdebugformat=<format> ignore (always use dwarf-2 for gcc)
219 * -xcrossfile[=<n>] ignore
220 * -xe error
221 * -xF error
222 * -xhelp=<f> error
223 * -xildoff ignore
224 * -xildon ignore
225 * -xinline ignore
226 * -xlibmieee error
227 * -xlibmil error
228 * -xlic_lib=sunperf error
229 * -xmaxopt=[...] error
230 * -xO<n> -O<n>
231 * -xP error
232 * -xprofile=<p> error
233 * -xregs=<r> table
234 * -xs error
235 * -xsb error
236 * -xsbfast error
237 * -xsfpconst error
238 * -xspace ignore (-not -Os)
239 * -xstrconst ignore
240 * -xtarget=<t> table
241 * -xtemp=<dir> error
242 * -xtime error
243 * -xtransition -Wtransition
244 * -xunroll=n error
245 * -W0,-xdbggen=no%usedonly -fno-eliminate-unused-debug-symbols
246 * -fno-eliminate-unused-debug-types
247 * -Y<c>,<dir> error
248 * -YA,<dir> error
249 * -YI,<dir> -nostdinc -I<dir>
250 * -YP,<dir> error
251 * -YS,<dir> error
252 */
253
254 #include <ctype.h>
255 #include <err.h>
256 #include <errno.h>
257 #include <fcntl.h>
258 #include <getopt.h>
259 #include <stdio.h>
260 #include <stdlib.h>
261 #include <string.h>
262 #include <unistd.h>
263
264 #include <sys/param.h>
265 #include <sys/stat.h>
266 #include <sys/types.h>
267 #include <sys/utsname.h>
268 #include <sys/wait.h>
269
270 #define CW_F_CXX 0x01
271 #define CW_F_SHADOW 0x02
272 #define CW_F_EXEC 0x04
273 #define CW_F_ECHO 0x08
274 #define CW_F_XLATE 0x10
275 #define CW_F_PROG 0x20
276
277 typedef enum cw_op {
278 CW_O_NONE = 0,
279 CW_O_PREPROCESS,
280 CW_O_COMPILE,
281 CW_O_LINK
282 } cw_op_t;
283
284 struct aelist {
285 struct ae {
286 struct ae *ae_next;
287 char *ae_arg;
288 } *ael_head, *ael_tail;
289 int ael_argc;
290 };
291
292 typedef enum {
293 GNU,
294 SUN
295 } compiler_style_t;
296
297 typedef struct {
298 char *c_name;
299 char *c_path;
300 compiler_style_t c_style;
301 } cw_compiler_t;
302
303 typedef struct cw_ictx {
304 struct cw_ictx *i_next;
305 cw_compiler_t *i_compiler;
306 struct aelist *i_ae;
307 uint32_t i_flags;
308 int i_oldargc;
309 char **i_oldargv;
310 pid_t i_pid;
311 char *i_discard;
312 char *i_stderr;
313 } cw_ictx_t;
314
315 /*
316 * Status values to indicate which Studio compiler and associated
317 * flags are being used.
318 */
319 #define M32 0x01 /* -m32 - only on Studio 12 */
320 #define M64 0x02 /* -m64 - only on Studio 12 */
321 #define SS11 0x100 /* Studio 11 */
322 #define SS12 0x200 /* Studio 12 */
323
324 #define TRANS_ENTRY 5
325 /*
326 * Translation table definition for the -xarch= flag. The "x_arg"
327 * value is translated into the appropriate gcc flags according
328 * to the values in x_trans[n]. The x_flags indicates what compiler
329 * is being used and what flags have been set via the use of
330 * "x_arg".
331 */
332 typedef struct xarch_table {
333 char *x_arg;
334 int x_flags;
335 char *x_trans[TRANS_ENTRY];
336 } xarch_table_t;
337
338 /*
339 * The translation table for the -xarch= flag used in the Studio compilers.
340 */
341 static const xarch_table_t xtbl[] = {
342 #if defined(__x86)
343 { "generic", SS11, {NULL} },
344 { "generic64", (SS11|M64), { "-m64", "-mtune=opteron" } },
345 { "amd64", (SS11|M64), { "-m64", "-mtune=opteron" } },
346 { "386", SS11, { "-march=i386" } },
347 { "pentium_pro", SS11, { "-march=pentiumpro" } },
348 { "sse", SS11, { "-msse", "-mfpmath=sse" } },
349 { "sse2", SS11, { "-msse2", "-mfpmath=sse" } },
350 #elif defined(__sparc)
351 { "generic", (SS11|M32), { "-m32", "-mcpu=v8" } },
352 { "generic64", (SS11|M64), { "-m64", "-mcpu=v9" } },
353 { "v8", (SS11|M32), { "-m32", "-mcpu=v8", "-mno-v8plus" } },
354 { "v8plus", (SS11|M32), { "-m32", "-mcpu=v9", "-mv8plus" } },
355 { "v8plusa", (SS11|M32), { "-m32", "-mcpu=ultrasparc", "-mv8plus",
356 "-mvis" } },
357 { "v8plusb", (SS11|M32), { "-m32", "-mcpu=ultrasparc3", "-mv8plus",
358 "-mvis" } },
359 { "v9", (SS11|M64), { "-m64", "-mcpu=v9" } },
360 { "v9a", (SS11|M64), { "-m64", "-mcpu=ultrasparc", "-mvis" } },
361 { "v9b", (SS11|M64), { "-m64", "-mcpu=ultrasparc3", "-mvis" } },
362 { "sparc", SS12, { "-mcpu=v9", "-mv8plus" } },
363 { "sparcvis", SS12, { "-mcpu=ultrasparc", "-mvis" } },
364 { "sparcvis2", SS12, { "-mcpu=ultrasparc3", "-mvis" } }
365 #endif
366 };
367
368 static int xtbl_size = sizeof (xtbl) / sizeof (xarch_table_t);
369
370 static const char *xchip_tbl[] = {
371 #if defined(__x86)
372 "386", "-mtune=i386", NULL,
373 "486", "-mtune=i486", NULL,
374 "pentium", "-mtune=pentium", NULL,
375 "pentium_pro", "-mtune=pentiumpro", NULL,
376 #elif defined(__sparc)
377 "super", "-mtune=supersparc", NULL,
378 "ultra", "-mtune=ultrasparc", NULL,
379 "ultra3", "-mtune=ultrasparc3", NULL,
380 #endif
381 NULL, NULL
382 };
383
384 static const char *xcode_tbl[] = {
385 #if defined(__sparc)
386 "abs32", "-fno-pic", "-mcmodel=medlow", NULL,
387 "abs44", "-fno-pic", "-mcmodel=medmid", NULL,
388 "abs64", "-fno-pic", "-mcmodel=medany", NULL,
389 "pic13", "-fpic", NULL,
390 "pic32", "-fPIC", NULL,
391 #endif
392 NULL, NULL
393 };
394
395 static const char *xtarget_tbl[] = {
396 #if defined(__x86)
397 "pentium_pro", "-march=pentiumpro", NULL,
398 #endif /* __x86 */
399 NULL, NULL
400 };
401
402 static const char *xregs_tbl[] = {
403 #if defined(__sparc)
404 "appl", "-mapp-regs", NULL,
405 "no%appl", "-mno-app-regs", NULL,
406 "float", "-mfpu", NULL,
407 "no%float", "-mno-fpu", NULL,
408 #endif /* __sparc */
409 NULL, NULL
410 };
411
412 static void
413 nomem(void)
414 {
415 errx(1, "out of memory");
416 }
417
418 static void
419 newae(struct aelist *ael, const char *arg)
420 {
421 struct ae *ae;
422
423 if ((ae = calloc(sizeof (*ae), 1)) == NULL)
424 nomem();
425 ae->ae_arg = strdup(arg);
426 if (ael->ael_tail == NULL)
427 ael->ael_head = ae;
428 else
429 ael->ael_tail->ae_next = ae;
430 ael->ael_tail = ae;
431 ael->ael_argc++;
432 }
433
434 static cw_ictx_t *
435 newictx(void)
436 {
437 cw_ictx_t *ctx = calloc(sizeof (cw_ictx_t), 1);
438 if (ctx)
439 if ((ctx->i_ae = calloc(sizeof (struct aelist), 1)) == NULL) {
440 free(ctx);
441 return (NULL);
442 }
443
444 return (ctx);
445 }
446
447 static void
448 error(const char *arg)
449 {
450 errx(2, "error: mapping failed at or near arg '%s'", arg);
451 }
452
453 /*
454 * Add the current favourite set of warnings to the gcc invocation.
455 */
456 static void
457 warnings(struct aelist *h)
458 {
459 static int warningsonce;
460
461 if (warningsonce++)
462 return;
463
464 /*
465 * Enable as many warnings as exist, then disable those that we never
466 * ever want.
467 */
468 newae(h, "-Wall");
469 newae(h, "-Wextra");
470 }
471
472 static void
473 optim_disable(struct aelist *h, int level)
474 {
475 if (level >= 2) {
476 newae(h, "-fno-strict-aliasing");
477 newae(h, "-fno-unit-at-a-time");
478 newae(h, "-fno-optimize-sibling-calls");
479 }
480 }
481
482 static void
483 Xsmode(struct aelist *h)
484 {
485 static int xsonce;
486
487 if (xsonce++)
488 return;
489
490 newae(h, "-traditional");
491 newae(h, "-traditional-cpp");
492 }
493
494 static void
495 usage()
496 {
497 extern char *__progname;
498 (void) fprintf(stderr,
499 "usage: %s [-C] [--versions] --primary <compiler> "
500 "[--shadow <compiler>]... -- cflags...\n",
501 __progname);
502 (void) fprintf(stderr, "compilers take the form: name,path,style\n"
503 " - name: a unique name usable in flag specifiers\n"
504 " - path: path to the compiler binary\n"
505 " - style: the style of flags expected: either sun or gnu\n");
506 exit(2);
507 }
508
509 static int
510 xlate_xtb(struct aelist *h, const char *xarg)
511 {
512 int i, j;
513
514 for (i = 0; i < xtbl_size; i++) {
515 if (strcmp(xtbl[i].x_arg, xarg) == 0)
516 break;
517 }
518
519 /*
520 * At the end of the table and so no matching "arg" entry
521 * found and so this must be a bad -xarch= flag.
522 */
523 if (i == xtbl_size)
524 error(xarg);
525
526 for (j = 0; j < TRANS_ENTRY; j++) {
527 if (xtbl[i].x_trans[j] != NULL)
528 newae(h, xtbl[i].x_trans[j]);
529 else
530 break;
531 }
532 return (xtbl[i].x_flags);
533
534 }
535
536 static void
537 xlate(struct aelist *h, const char *xarg, const char **table)
538 {
539 while (*table != NULL && strcmp(xarg, *table) != 0) {
540 while (*table != NULL)
541 table++;
542 table++;
543 }
544
545 if (*table == NULL)
546 error(xarg);
547
548 table++;
549
550 while (*table != NULL) {
551 newae(h, *table);
552 table++;
553 }
554 }
555
556 /*
557 * The compiler wants the output file to end in appropriate extension. If
558 * we're generating a name from whole cloth (path == NULL), we assume that
559 * extension to be .o, otherwise we match the extension of the caller.
560 */
561 static char *
562 discard_file_name(const char *path)
563 {
564 char *ret, *ext, *file;
565
566 if (path == NULL) {
567 ext = ".o";
568 } else {
569 ext = strrchr(path, '.');
570 }
571
572 if ((ret = calloc(MAXPATHLEN, sizeof (char))) == NULL)
573 nomem();
574
575 if ((file = tempnam(NULL, ".cw")) == NULL)
576 nomem();
577
578 (void) strlcpy(ret, file, MAXPATHLEN);
579 if (ext != NULL)
580 (void) strlcat(ret, ext, MAXPATHLEN);
581 free(file);
582 return (ret);
583 }
584
585 static void
586 do_gcc(cw_ictx_t *ctx)
587 {
588 int c;
589 int nolibc = 0;
590 int in_output = 0, seen_o = 0, c_files = 0;
591 cw_op_t op = CW_O_LINK;
592 char *model = NULL;
593 char *nameflag;
594 int mflag = 0;
595
596 if (ctx->i_flags & CW_F_PROG) {
597 newae(ctx->i_ae, "--version");
598 return;
599 }
600
601 newae(ctx->i_ae, "-fident");
602 newae(ctx->i_ae, "-finline");
603 newae(ctx->i_ae, "-fno-inline-functions");
604 newae(ctx->i_ae, "-fno-builtin");
605 newae(ctx->i_ae, "-fno-asm");
606 newae(ctx->i_ae, "-fdiagnostics-show-option");
607 newae(ctx->i_ae, "-nodefaultlibs");
608
609 #if defined(__sparc)
610 /*
611 * The SPARC ldd and std instructions require 8-byte alignment of
612 * their address operand. gcc correctly uses them only when the
613 * ABI requires 8-byte alignment; unfortunately we have a number of
614 * pieces of buggy code that doesn't conform to the ABI. This
615 * flag makes gcc work more like Studio with -xmemalign=4.
616 */
617 newae(ctx->i_ae, "-mno-integer-ldd-std");
618 #endif
619
620 /*
621 * This is needed because 'u' is defined
622 * under a conditional on 'sun'. Should
623 * probably just remove the conditional,
624 * or make it be dependent on '__sun'.
625 *
626 * -Dunix is also missing in enhanced ANSI mode
627 */
628 newae(ctx->i_ae, "-D__sun");
629
630 if (asprintf(&nameflag, "-_%s=", ctx->i_compiler->c_name) == -1)
631 nomem();
632
633 /*
634 * Walk the argument list, translating as we go ..
635 */
636 while (--ctx->i_oldargc > 0) {
637 char *arg = *++ctx->i_oldargv;
638 size_t arglen = strlen(arg);
639
640 if (*arg == '-') {
641 arglen--;
642 } else {
643 /*
644 * Discard inline files that gcc doesn't grok
645 */
646 if (!in_output && arglen > 3 &&
647 strcmp(arg + arglen - 3, ".il") == 0)
648 continue;
649
650 if (!in_output && arglen > 2 &&
651 arg[arglen - 2] == '.' &&
652 (arg[arglen - 1] == 'S' || arg[arglen - 1] == 's' ||
653 arg[arglen - 1] == 'c' || arg[arglen - 1] == 'i'))
654 c_files++;
655
656 /*
657 * Otherwise, filenames and partial arguments
658 * are passed through for gcc to chew on. However,
659 * output is always discarded for the secondary
660 * compiler.
661 */
662 if ((ctx->i_flags & CW_F_SHADOW) && in_output) {
663 ctx->i_discard = discard_file_name(arg);
664
665 if (ctx->i_discard == NULL)
666 nomem();
667 newae(ctx->i_ae, ctx->i_discard);
668 } else {
669 newae(ctx->i_ae, arg);
670 }
671 in_output = 0;
672 continue;
673 }
674
675 if (ctx->i_flags & CW_F_CXX) {
676 if (strncmp(arg, "-_g++=", 6) == 0) {
677 newae(ctx->i_ae, strchr(arg, '=') + 1);
678 continue;
679 }
680 if (strncmp(arg, "-compat=", 8) == 0) {
681 /* discard -compat=4 and -compat=5 */
682 continue;
683 }
684 if (strcmp(arg, "-Qoption") == 0) {
685 /* discard -Qoption and its two arguments */
686 if (ctx->i_oldargc < 3)
687 error(arg);
688 ctx->i_oldargc -= 2;
689 ctx->i_oldargv += 2;
690 continue;
691 }
692 if (strcmp(arg, "-xwe") == 0) {
693 /* turn warnings into errors */
694 newae(ctx->i_ae, "-Werror");
695 continue;
696 }
697 if (strcmp(arg, "-norunpath") == 0) {
698 /* gcc has no corresponding option */
699 continue;
700 }
701 if (strcmp(arg, "-nolib") == 0) {
702 /* -nodefaultlibs is on by default */
703 nolibc = 1;
704 continue;
705 }
706 #if defined(__sparc)
707 if (strcmp(arg, "-cg92") == 0) {
708 mflag |= xlate_xtb(ctx->i_ae, "v8");
709 xlate(ctx->i_ae, "super", xchip_tbl);
710 continue;
711 }
712 #endif /* __sparc */
713 }
714
715 switch ((c = arg[1])) {
716 case '_':
717 if ((strncmp(arg, nameflag, strlen(nameflag)) == 0) ||
718 (strncmp(arg, "-_gcc=", 6) == 0) ||
719 (strncmp(arg, "-_gnu=", 6) == 0)) {
720 newae(ctx->i_ae, strchr(arg, '=') + 1);
721 }
722 break;
723 case '#':
724 if (arglen == 1) {
725 newae(ctx->i_ae, "-v");
726 break;
727 }
728 error(arg);
729 break;
730 case 'f':
731 if ((strcmp(arg, "-fpic") == 0) ||
732 (strcmp(arg, "-fPIC") == 0)) {
733 newae(ctx->i_ae, arg);
734 break;
735 }
736 error(arg);
737 break;
738 case 'g':
739 newae(ctx->i_ae, "-gdwarf-2");
740 break;
741 case 'E':
742 if (arglen == 1) {
743 newae(ctx->i_ae, "-xc");
744 newae(ctx->i_ae, arg);
745 op = CW_O_PREPROCESS;
746 nolibc = 1;
747 break;
748 }
749 error(arg);
750 break;
751 case 'c':
752 case 'S':
753 if (arglen == 1) {
754 op = CW_O_COMPILE;
755 nolibc = 1;
756 }
757 /* FALLTHROUGH */
758 case 'C':
759 case 'H':
760 case 'p':
761 if (arglen == 1) {
762 newae(ctx->i_ae, arg);
763 break;
764 }
765 error(arg);
766 break;
767 case 'A':
768 case 'h':
769 case 'I':
770 case 'i':
771 case 'L':
772 case 'l':
773 case 'R':
774 case 'U':
775 case 'u':
776 case 'w':
777 newae(ctx->i_ae, arg);
778 break;
779 case 'o':
780 seen_o = 1;
781 if (arglen == 1) {
782 in_output = 1;
783 newae(ctx->i_ae, arg);
784 } else if (ctx->i_flags & CW_F_SHADOW) {
785 newae(ctx->i_ae, "-o");
786 ctx->i_discard = discard_file_name(arg);
787 if (ctx->i_discard == NULL)
788 nomem();
789
790 newae(ctx->i_ae, ctx->i_discard);
791 } else {
792 newae(ctx->i_ae, arg);
793 }
794 break;
795 case 'D':
796 newae(ctx->i_ae, arg);
797 /*
798 * XXX Clearly a hack ... do we need _KADB too?
799 */
800 if (strcmp(arg, "-D_KERNEL") == 0 ||
801 strcmp(arg, "-D_BOOT") == 0)
802 newae(ctx->i_ae, "-ffreestanding");
803 break;
804 case 'd':
805 if (arglen == 2) {
806 if (strcmp(arg, "-dy") == 0) {
807 newae(ctx->i_ae, "-Wl,-dy");
808 break;
809 }
810 if (strcmp(arg, "-dn") == 0) {
811 newae(ctx->i_ae, "-Wl,-dn");
812 break;
813 }
814 }
815 if (strcmp(arg, "-dalign") == 0) {
816 /*
817 * -dalign forces alignment in some cases;
818 * gcc does not need any flag to do this.
819 */
820 break;
821 }
822 error(arg);
823 break;
824 case 'e':
825 if (strcmp(arg,
826 "-erroff=E_EMPTY_TRANSLATION_UNIT") == 0) {
827 /*
828 * Accept but ignore this -- gcc doesn't
829 * seem to complain about empty translation
830 * units
831 */
832 break;
833 }
834 /* XX64 -- ignore all -erroff= options, for now */
835 if (strncmp(arg, "-erroff=", 8) == 0)
836 break;
837 if (strcmp(arg, "-errtags=yes") == 0) {
838 warnings(ctx->i_ae);
839 break;
840 }
841 if (strcmp(arg, "-errwarn=%all") == 0) {
842 newae(ctx->i_ae, "-Werror");
843 break;
844 }
845 error(arg);
846 break;
847 case 'G':
848 newae(ctx->i_ae, "-shared");
849 nolibc = 1;
850 break;
851 case 'k':
852 if (strcmp(arg, "-keeptmp") == 0) {
853 newae(ctx->i_ae, "-save-temps");
854 break;
855 }
856 error(arg);
857 break;
858 case 'm':
859 if (strcmp(arg, "-mt") == 0) {
860 newae(ctx->i_ae, "-D_REENTRANT");
861 break;
862 }
863 if (strcmp(arg, "-m64") == 0) {
864 newae(ctx->i_ae, "-m64");
865 #if defined(__x86)
866 newae(ctx->i_ae, "-mtune=opteron");
867 #endif
868 mflag |= M64;
869 break;
870 }
871 if (strcmp(arg, "-m32") == 0) {
872 newae(ctx->i_ae, "-m32");
873 mflag |= M32;
874 break;
875 }
876 error(arg);
877 break;
878 case 'B': /* linker options */
879 case 'M':
880 case 'z':
881 {
882 char *opt;
883 size_t len;
884 char *s;
885
886 if (arglen == 1) {
887 opt = *++ctx->i_oldargv;
888 if (opt == NULL || *opt == '\0')
889 error(arg);
890 ctx->i_oldargc--;
891 } else {
892 opt = arg + 2;
893 }
894 len = strlen(opt) + 7;
895 if ((s = malloc(len)) == NULL)
896 nomem();
897 (void) snprintf(s, len, "-Wl,-%c%s", c, opt);
898 newae(ctx->i_ae, s);
899 free(s);
900 }
901 break;
902 case 'O':
903 if (arglen == 1) {
904 newae(ctx->i_ae, "-O");
905 break;
906 }
907 error(arg);
908 break;
909 case 'P':
910 /*
911 * We could do '-E -o filename.i', but that's hard,
912 * and we don't need it for the case that's triggering
913 * this addition. We'll require the user to specify
914 * -o in the Makefile. If they don't they'll find out
915 * in a hurry.
916 */
917 newae(ctx->i_ae, "-E");
918 op = CW_O_PREPROCESS;
919 nolibc = 1;
920 break;
921 case 's':
922 if (arglen == 1) {
923 newae(ctx->i_ae, "-Wl,-s");
924 break;
925 }
926 error(arg);
927 break;
928 case 't':
929 if (arglen == 1) {
930 newae(ctx->i_ae, "-Wl,-t");
931 break;
932 }
933 error(arg);
934 break;
935 case 'V':
936 if (arglen == 1) {
937 ctx->i_flags &= ~CW_F_ECHO;
938 newae(ctx->i_ae, "--version");
939 break;
940 }
941 error(arg);
942 break;
943 case 'v':
944 if (arglen == 1) {
945 warnings(ctx->i_ae);
946 break;
947 }
948 error(arg);
949 break;
950 case 'W':
951 if (strncmp(arg, "-Wp,-xc99", 9) == 0) {
952 /*
953 * gcc's preprocessor will accept c99
954 * regardless, so accept and ignore.
955 */
956 break;
957 }
958 if (strncmp(arg, "-Wa,", 4) == 0 ||
959 strncmp(arg, "-Wp,", 4) == 0 ||
960 strncmp(arg, "-Wl,", 4) == 0) {
961 newae(ctx->i_ae, arg);
962 break;
963 }
964 if (strcmp(arg, "-W0,-noglobal") == 0 ||
965 strcmp(arg, "-W0,-xglobalstatic") == 0) {
966 /*
967 * gcc doesn't prefix local symbols
968 * in debug mode, so this is not needed.
969 */
970 break;
971 }
972 if (strcmp(arg, "-W0,-Lt") == 0) {
973 /*
974 * Generate tests at the top of loops.
975 * There is no direct gcc equivalent, ignore.
976 */
977 break;
978 }
979 if (strcmp(arg, "-W0,-xdbggen=no%usedonly") == 0) {
980 newae(ctx->i_ae,
981 "-fno-eliminate-unused-debug-symbols");
982 newae(ctx->i_ae,
983 "-fno-eliminate-unused-debug-types");
984 break;
985 }
986 if (strcmp(arg, "-W2,-xwrap_int") == 0) {
987 /*
988 * Use the legacy behaviour (pre-SS11)
989 * for integer wrapping.
990 * gcc does not need this.
991 */
992 break;
993 }
994 if (strcmp(arg, "-Wd,-xsafe=unboundsym") == 0) {
995 /*
996 * Prevents optimizing away checks for
997 * unbound weak symbol addresses. gcc does
998 * not do this, so it's not needed.
999 */
1000 break;
1001 }
1002 if (strncmp(arg, "-Wc,-xcode=", 11) == 0) {
1003 xlate(ctx->i_ae, arg + 11, xcode_tbl);
1004 break;
1005 }
1006 if (strncmp(arg, "-Wc,-Qiselect", 13) == 0) {
1007 /*
1008 * Prevents insertion of register symbols.
1009 * gcc doesn't do this, so ignore it.
1010 */
1011 break;
1012 }
1013 if (strcmp(arg, "-Wc,-Qassembler-ounrefsym=0") == 0) {
1014 /*
1015 * Prevents optimizing away of static variables.
1016 * gcc does not do this, so it's not needed.
1017 */
1018 break;
1019 }
1020 #if defined(__x86)
1021 if (strcmp(arg, "-Wu,-save_args") == 0) {
1022 newae(ctx->i_ae, "-msave-args");
1023 break;
1024 }
1025 #endif /* __x86 */
1026 error(arg);
1027 break;
1028 case 'X':
1029 if (strcmp(arg, "-Xa") == 0 ||
1030 strcmp(arg, "-Xt") == 0) {
1031 break;
1032 }
1033 if (strcmp(arg, "-Xs") == 0) {
1034 Xsmode(ctx->i_ae);
1035 break;
1036 }
1037 error(arg);
1038 break;
1039 case 'x':
1040 if (arglen == 1)
1041 error(arg);
1042 switch (arg[2]) {
1043 case 'a':
1044 if (strncmp(arg, "-xarch=", 7) == 0) {
1045 mflag |= xlate_xtb(ctx->i_ae, arg + 7);
1046 break;
1047 }
1048 error(arg);
1049 break;
1050 case 'b':
1051 if (strncmp(arg, "-xbuiltin=", 10) == 0) {
1052 if (strcmp(arg + 10, "%all"))
1053 newae(ctx->i_ae, "-fbuiltin");
1054 break;
1055 }
1056 error(arg);
1057 break;
1058 case 'C':
1059 /* Accept C++ style comments -- ignore */
1060 if (strcmp(arg, "-xCC") == 0)
1061 break;
1062 error(arg);
1063 break;
1064 case 'c':
1065 if (strncmp(arg, "-xc99=%all", 10) == 0) {
1066 newae(ctx->i_ae, "-std=gnu99");
1067 break;
1068 }
1069 if (strncmp(arg, "-xc99=%none", 11) == 0) {
1070 newae(ctx->i_ae, "-std=gnu89");
1071 break;
1072 }
1073 if (strncmp(arg, "-xchip=", 7) == 0) {
1074 xlate(ctx->i_ae, arg + 7, xchip_tbl);
1075 break;
1076 }
1077 if (strncmp(arg, "-xcode=", 7) == 0) {
1078 xlate(ctx->i_ae, arg + 7, xcode_tbl);
1079 break;
1080 }
1081 if (strncmp(arg, "-xcrossfile", 11) == 0)
1082 break;
1083 error(arg);
1084 break;
1085 case 'd':
1086 if (strncmp(arg, "-xdebugformat=", 14) == 0)
1087 break;
1088 error(arg);
1089 break;
1090 case 'F':
1091 /*
1092 * Compile for mapfile reordering, or unused
1093 * section elimination, syntax can be -xF or
1094 * more complex, like -xF=%all -- ignore.
1095 */
1096 if (strncmp(arg, "-xF", 3) == 0)
1097 break;
1098 error(arg);
1099 break;
1100 case 'i':
1101 if (strncmp(arg, "-xinline", 8) == 0)
1102 /* No inlining; ignore */
1103 break;
1104 if (strcmp(arg, "-xildon") == 0 ||
1105 strcmp(arg, "-xildoff") == 0)
1106 /* No incremental linking; ignore */
1107 break;
1108 error(arg);
1109 break;
1110 #if defined(__x86)
1111 case 'm':
1112 if (strcmp(arg, "-xmodel=kernel") == 0) {
1113 newae(ctx->i_ae, "-ffreestanding");
1114 newae(ctx->i_ae, "-mno-red-zone");
1115 model = "-mcmodel=kernel";
1116 nolibc = 1;
1117 break;
1118 }
1119 error(arg);
1120 break;
1121 #endif /* __x86 */
1122 case 'O':
1123 if (strncmp(arg, "-xO", 3) == 0) {
1124 size_t len = strlen(arg);
1125 char *s = NULL;
1126 int c = *(arg + 3);
1127 int level;
1128
1129 if (len != 4 || !isdigit(c))
1130 error(arg);
1131
1132 level = atoi(arg + 3);
1133 if (level > 5)
1134 error(arg);
1135 if (level >= 2) {
1136 /*
1137 * For gcc-3.4.x at -O2 we
1138 * need to disable optimizations
1139 * that break ON.
1140 */
1141 optim_disable(ctx->i_ae, level);
1142 /*
1143 * limit -xO3 to -O2 as well.
1144 */
1145 level = 2;
1146 }
1147 if (asprintf(&s, "-O%d", level) == -1)
1148 nomem();
1149 newae(ctx->i_ae, s);
1150 free(s);
1151 break;
1152 }
1153 error(arg);
1154 break;
1155 case 'r':
1156 if (strncmp(arg, "-xregs=", 7) == 0) {
1157 xlate(ctx->i_ae, arg + 7, xregs_tbl);
1158 break;
1159 }
1160 error(arg);
1161 break;
1162 case 's':
1163 if (strcmp(arg, "-xs") == 0 ||
1164 strcmp(arg, "-xspace") == 0 ||
1165 strcmp(arg, "-xstrconst") == 0)
1166 break;
1167 error(arg);
1168 break;
1169 case 't':
1170 if (strncmp(arg, "-xtarget=", 9) == 0) {
1171 xlate(ctx->i_ae, arg + 9, xtarget_tbl);
1172 break;
1173 }
1174 error(arg);
1175 break;
1176 case 'e':
1177 case 'h':
1178 case 'l':
1179 default:
1180 error(arg);
1181 break;
1182 }
1183 break;
1184 case 'Y':
1185 if (arglen == 1) {
1186 if ((arg = *++ctx->i_oldargv) == NULL ||
1187 *arg == '\0')
1188 error("-Y");
1189 ctx->i_oldargc--;
1190 arglen = strlen(arg + 1);
1191 } else {
1192 arg += 2;
1193 }
1194 /* Just ignore -YS,... for now */
1195 if (strncmp(arg, "S,", 2) == 0)
1196 break;
1197 if (strncmp(arg, "l,", 2) == 0) {
1198 char *s = strdup(arg);
1199 s[0] = '-';
1200 s[1] = 'B';
1201 newae(ctx->i_ae, s);
1202 free(s);
1203 break;
1204 }
1205 if (strncmp(arg, "I,", 2) == 0) {
1206 char *s = strdup(arg);
1207 s[0] = '-';
1208 s[1] = 'I';
1209 newae(ctx->i_ae, "-nostdinc");
1210 newae(ctx->i_ae, s);
1211 free(s);
1212 break;
1213 }
1214 error(arg);
1215 break;
1216 case 'Q':
1217 /*
1218 * We could map -Qy into -Wl,-Qy etc.
1219 */
1220 default:
1221 error(arg);
1222 break;
1223 }
1224 }
1225
1226 free(nameflag);
1227
1228 /*
1229 * When compiling multiple source files in a single invocation some
1230 * compilers output objects into the current directory with
1231 * predictable and conventional names.
1232 *
1233 * We prevent any attempt to compile multiple files at once so that
1234 * any such objects created by a shadow can't escape into a later
1235 * link-edit.
1236 */
1237 if (c_files > 1 && op != CW_O_PREPROCESS) {
1238 errx(2, "multiple source files are "
1239 "allowed only with -E or -P");
1240 }
1241
1242 /*
1243 * Make sure that we do not have any unintended interactions between
1244 * the xarch options passed in and the version of the Studio compiler
1245 * used.
1246 */
1247 if ((mflag & (SS11|SS12)) == (SS11|SS12)) {
1248 errx(2,
1249 "Conflicting \"-xarch=\" flags (both Studio 11 and 12)\n");
1250 }
1251
1252 switch (mflag) {
1253 case 0:
1254 /* FALLTHROUGH */
1255 case M32:
1256 #if defined(__sparc)
1257 /*
1258 * Only -m32 is defined and so put in the missing xarch
1259 * translation.
1260 */
1261 newae(ctx->i_ae, "-mcpu=v8");
1262 newae(ctx->i_ae, "-mno-v8plus");
1263 #endif
1264 break;
1265 case M64:
1266 #if defined(__sparc)
1267 /*
1268 * Only -m64 is defined and so put in the missing xarch
1269 * translation.
1270 */
1271 newae(ctx->i_ae, "-mcpu=v9");
1272 #endif
1273 break;
1274 case SS12:
1275 #if defined(__sparc)
1276 /* no -m32/-m64 flag used - this is an error for sparc builds */
1277 (void) fprintf(stderr, "No -m32/-m64 flag defined\n");
1278 exit(2);
1279 #endif
1280 break;
1281 case SS11:
1282 /* FALLTHROUGH */
1283 case (SS11|M32):
1284 case (SS11|M64):
1285 break;
1286 case (SS12|M32):
1287 #if defined(__sparc)
1288 /*
1289 * Need to add in further 32 bit options because with SS12
1290 * the xarch=sparcvis option can be applied to 32 or 64
1291 * bit, and so the translatation table (xtbl) cannot handle
1292 * that.
1293 */
1294 newae(ctx->i_ae, "-mv8plus");
1295 #endif
1296 break;
1297 case (SS12|M64):
1298 break;
1299 default:
1300 (void) fprintf(stderr,
1301 "Incompatible -xarch= and/or -m32/-m64 options used.\n");
1302 exit(2);
1303 }
1304
1305 if (ctx->i_flags & CW_F_SHADOW) {
1306 if (op == CW_O_PREPROCESS)
1307 exit(0);
1308 else if (op == CW_O_LINK && c_files == 0)
1309 exit(0);
1310 }
1311
1312 if (model != NULL)
1313 newae(ctx->i_ae, model);
1314 if (!nolibc)
1315 newae(ctx->i_ae, "-lc");
1316 if (!seen_o && (ctx->i_flags & CW_F_SHADOW)) {
1317 ctx->i_discard = discard_file_name(NULL);
1318
1319 if (ctx->i_discard == NULL)
1320 nomem();
1321 newae(ctx->i_ae, "-o");
1322 newae(ctx->i_ae, ctx->i_discard);
1323 }
1324 }
1325
1326 static void
1327 do_cc(cw_ictx_t *ctx)
1328 {
1329 int in_output = 0, seen_o = 0, c_files = 0;
1330 cw_op_t op = CW_O_LINK;
1331 char *nameflag;
1332
1333 if (ctx->i_flags & CW_F_PROG) {
1334 newae(ctx->i_ae, "-V");
1335 return;
1336 }
1337
1338 if (asprintf(&nameflag, "-_%s=", ctx->i_compiler->c_name) == -1)
1339 nomem();
1340
1341 while (--ctx->i_oldargc > 0) {
1342 char *arg = *++ctx->i_oldargv;
1343 size_t arglen = strlen(arg);
1344
1345 if (strncmp(arg, "-_CC=", 5) == 0) {
1346 newae(ctx->i_ae, strchr(arg, '=') + 1);
1347 continue;
1348 }
1349
1350 if (*arg != '-') {
1351 if (!in_output && arglen > 2 &&
1352 arg[arglen - 2] == '.' &&
1353 (arg[arglen - 1] == 'S' || arg[arglen - 1] == 's' ||
1354 arg[arglen - 1] == 'c' || arg[arglen - 1] == 'i'))
1355 c_files++;
1356
1357 if (in_output == 0 || !(ctx->i_flags & CW_F_SHADOW)) {
1358 newae(ctx->i_ae, arg);
1359 } else {
1360 in_output = 0;
1361 ctx->i_discard = discard_file_name(arg);
1362 if (ctx->i_discard == NULL)
1363 nomem();
1364 newae(ctx->i_ae, ctx->i_discard);
1365 }
1366 continue;
1367 }
1368 switch (*(arg + 1)) {
1369 case '_':
1370 if ((strncmp(arg, nameflag, strlen(nameflag)) == 0) ||
1371 (strncmp(arg, "-_cc=", 5) == 0) ||
1372 (strncmp(arg, "-_sun=", 6) == 0)) {
1373 newae(ctx->i_ae, strchr(arg, '=') + 1);
1374 }
1375 break;
1376
1377 case 'V':
1378 ctx->i_flags &= ~CW_F_ECHO;
1379 newae(ctx->i_ae, arg);
1380 break;
1381 case 'o':
1382 seen_o = 1;
1383 if (strlen(arg) == 2) {
1384 in_output = 1;
1385 newae(ctx->i_ae, arg);
1386 } else if (ctx->i_flags & CW_F_SHADOW) {
1387 newae(ctx->i_ae, "-o");
1388 ctx->i_discard = discard_file_name(arg);
1389 if (ctx->i_discard == NULL)
1390 nomem();
1391 newae(ctx->i_ae, ctx->i_discard);
1392 } else {
1393 newae(ctx->i_ae, arg);
1394 }
1395 break;
1396 case 'c':
1397 case 'S':
1398 if (strlen(arg) == 2)
1399 op = CW_O_COMPILE;
1400 newae(ctx->i_ae, arg);
1401 break;
1402 case 'E':
1403 case 'P':
1404 if (strlen(arg) == 2)
1405 op = CW_O_PREPROCESS;
1406 /*FALLTHROUGH*/
1407 default:
1408 newae(ctx->i_ae, arg);
1409 }
1410 }
1411
1412 free(nameflag);
1413
1414 /* See the comment on this same code in do_gcc() */
1415 if (c_files > 1 && op != CW_O_PREPROCESS) {
1416 errx(2, "multiple source files are "
1417 "allowed only with -E or -P");
1418 }
1419
1420 if (ctx->i_flags & CW_F_SHADOW) {
1421 if (op == CW_O_PREPROCESS)
1422 exit(0);
1423 else if (op == CW_O_LINK && c_files == 0)
1424 exit(0);
1425 }
1426
1427 if (!seen_o && (ctx->i_flags & CW_F_SHADOW)) {
1428 newae(ctx->i_ae, "-o");
1429 ctx->i_discard = discard_file_name(NULL);
1430
1431 if (ctx->i_discard == NULL)
1432 nomem();
1433 newae(ctx->i_ae, ctx->i_discard);
1434 }
1435 }
1436
1437 static void
1438 prepctx(cw_ictx_t *ctx)
1439 {
1440 newae(ctx->i_ae, ctx->i_compiler->c_path);
1441
1442 if (ctx->i_flags & CW_F_PROG) {
1443 (void) printf("%s: %s\n", (ctx->i_flags & CW_F_SHADOW) ?
1444 "shadow" : "primary", ctx->i_compiler->c_path);
1445 (void) fflush(stdout);
1446 }
1447
1448 if (!(ctx->i_flags & CW_F_XLATE))
1449 return;
1450
1451 switch (ctx->i_compiler->c_style) {
1452 case SUN:
1453 do_cc(ctx);
1454 break;
1455 case GNU:
1456 do_gcc(ctx);
1457 break;
1458 }
1459 }
1460
1461 static int
1462 invoke(cw_ictx_t *ctx)
1463 {
1464 char **newargv;
1465 int ac;
1466 struct ae *a;
1467
1468 if ((newargv = calloc(sizeof (*newargv), ctx->i_ae->ael_argc + 1)) ==
1469 NULL)
1470 nomem();
1471
1472 if (ctx->i_flags & CW_F_ECHO)
1473 (void) fprintf(stderr, "+ ");
1474
1475 for (ac = 0, a = ctx->i_ae->ael_head; a; a = a->ae_next, ac++) {
1476 newargv[ac] = a->ae_arg;
1477 if (ctx->i_flags & CW_F_ECHO)
1478 (void) fprintf(stderr, "%s ", a->ae_arg);
1479 if (a == ctx->i_ae->ael_tail)
1480 break;
1481 }
1482
1483 if (ctx->i_flags & CW_F_ECHO) {
1484 (void) fprintf(stderr, "\n");
1485 (void) fflush(stderr);
1486 }
1487
1488 if (!(ctx->i_flags & CW_F_EXEC))
1489 return (0);
1490
1491 /*
1492 * We must fix up the environment here so that the dependency files are
1493 * not trampled by the shadow compiler. Also take care of GCC
1494 * environment variables that will throw off gcc. This assumes a primary
1495 * gcc.
1496 */
1497 if ((ctx->i_flags & CW_F_SHADOW) &&
1498 (unsetenv("SUNPRO_DEPENDENCIES") != 0 ||
1499 unsetenv("DEPENDENCIES_OUTPUT") != 0 ||
1500 unsetenv("GCC_ROOT") != 0)) {
1501 (void) fprintf(stderr, "error: environment setup failed: %s\n",
1502 strerror(errno));
1503 return (-1);
1504 }
1505
1506 (void) execv(newargv[0], newargv);
1507 warn("couldn't run %s", newargv[0]);
1508
1509 return (-1);
1510 }
1511
1512 static int
1513 reap(cw_ictx_t *ctx)
1514 {
1515 int status, ret = 0;
1516 char buf[1024];
1517 struct stat s;
1518
1519 /*
1520 * Only wait for one specific child.
1521 */
1522 if (ctx->i_pid <= 0)
1523 return (-1);
1524
1525 do {
1526 if (waitpid(ctx->i_pid, &status, 0) < 0) {
1527 warn("cannot reap child");
1528 return (-1);
1529 }
1530 if (status != 0) {
1531 if (WIFSIGNALED(status)) {
1532 ret = -WTERMSIG(status);
1533 break;
1534 } else if (WIFEXITED(status)) {
1535 ret = WEXITSTATUS(status);
1536 break;
1537 }
1538 }
1539 } while (!WIFEXITED(status) && !WIFSIGNALED(status));
1540
1541 (void) unlink(ctx->i_discard);
1542 free(ctx->i_discard);
1543
1544 if (stat(ctx->i_stderr, &s) < 0) {
1545 warn("stat failed on child cleanup");
1546 return (-1);
1547 }
1548 if (s.st_size != 0) {
1549 FILE *f;
1550
1551 if ((f = fopen(ctx->i_stderr, "r")) != NULL) {
1552 while (fgets(buf, sizeof (buf), f))
1553 (void) fprintf(stderr, "%s", buf);
1554 (void) fflush(stderr);
1555 (void) fclose(f);
1556 }
1557 }
1558 (void) unlink(ctx->i_stderr);
1559 free(ctx->i_stderr);
1560
1561 /*
1562 * cc returns an error code when given -V; we want that to succeed.
1563 */
1564 if (ctx->i_flags & CW_F_PROG)
1565 return (0);
1566
1567 return (ret);
1568 }
1569
1570 static int
1571 exec_ctx(cw_ictx_t *ctx, int block)
1572 {
1573 if ((ctx->i_stderr = tempnam(NULL, ".cw")) == NULL) {
1574 nomem();
1575 return (-1);
1576 }
1577
1578 if ((ctx->i_pid = fork()) == 0) {
1579 int fd;
1580
1581 (void) fclose(stderr);
1582 if ((fd = open(ctx->i_stderr, O_WRONLY | O_CREAT | O_EXCL,
1583 0666)) < 0) {
1584 err(1, "open failed for standard error");
1585 }
1586 if (dup2(fd, 2) < 0) {
1587 err(1, "dup2 failed for standard error");
1588 }
1589 if (fd != 2)
1590 (void) close(fd);
1591 if (freopen("/dev/fd/2", "w", stderr) == NULL) {
1592 err(1, "freopen failed for /dev/fd/2");
1593 }
1594
1595 prepctx(ctx);
1596 exit(invoke(ctx));
1597 }
1598
1599 if (ctx->i_pid < 0) {
1600 err(1, "fork failed");
1601 }
1602
1603 if (block)
1604 return (reap(ctx));
1605
1606 return (0);
1607 }
1608
1609 static void
1610 parse_compiler(const char *spec, cw_compiler_t *compiler)
1611 {
1612 char *tspec, *token;
1613
1614 if ((tspec = strdup(spec)) == NULL)
1615 nomem();
1616
1617 if ((token = strsep(&tspec, ",")) == NULL)
1618 errx(1, "Compiler is missing a name: %s", spec);
1619 compiler->c_name = token;
1620
1621 if ((token = strsep(&tspec, ",")) == NULL)
1622 errx(1, "Compiler is missing a path: %s", spec);
1623 compiler->c_path = token;
1624
1625 if ((token = strsep(&tspec, ",")) == NULL)
1626 errx(1, "Compiler is missing a style: %s", spec);
1627
1628 if ((strcasecmp(token, "gnu") == 0) ||
1629 (strcasecmp(token, "gcc") == 0))
1630 compiler->c_style = GNU;
1631 else if ((strcasecmp(token, "sun") == 0) ||
1632 (strcasecmp(token, "cc") == 0))
1633 compiler->c_style = SUN;
1634 else
1635 errx(1, "unknown compiler style: %s", token);
1636
1637 if (tspec != NULL)
1638 errx(1, "Excess tokens in compiler: %s", spec);
1639 }
1640
1641 int
1642 main(int argc, char **argv)
1643 {
1644 int ch;
1645 cw_compiler_t primary = { NULL, NULL, 0 };
1646 cw_compiler_t shadows[10];
1647 int nshadows = 0;
1648 int ret = 0;
1649 boolean_t do_serial = B_FALSE;
1650 boolean_t do_exec = B_FALSE;
1651 boolean_t vflg = B_FALSE;
1652 boolean_t Cflg = B_FALSE;
1653 boolean_t cflg = B_FALSE;
1654 boolean_t nflg = B_FALSE;
1655
1656 cw_ictx_t *main_ctx;
1657
1658 static struct option longopts[] = {
1659 { "compiler", no_argument, NULL, 'c' },
1660 { "noecho", no_argument, NULL, 'n' },
1661 { "primary", required_argument, NULL, 'p' },
1662 { "shadow", required_argument, NULL, 's' },
1663 { "versions", no_argument, NULL, 'v' },
1664 { NULL, 0, NULL, 0 },
1665 };
1666
1667
1668 if ((main_ctx = newictx()) == NULL)
1669 nomem();
1670
1671 while ((ch = getopt_long(argc, argv, "C", longopts, NULL)) != -1) {
1672 switch (ch) {
1673 case 'c':
1674 cflg = B_TRUE;
1675 break;
1676 case 'C':
1677 Cflg = B_TRUE;
1678 break;
1679 case 'n':
1680 nflg = B_TRUE;
1681 break;
1682 case 'p':
1683 if (primary.c_path != NULL) {
1684 warnx("Only one primary compiler may "
1685 "be specified");
1686 usage();
1687 }
1688
1689 parse_compiler(optarg, &primary);
1690 break;
1691 case 's':
1692 if (nshadows >= 10)
1693 errx(1, "May only use 10 shadows at "
1694 "the moment");
1695 parse_compiler(optarg, &shadows[nshadows]);
1696 nshadows++;
1697 break;
1698 case 'v':
1699 vflg = B_TRUE;
1700 break;
1701 default:
1702 (void) fprintf(stderr, "Did you forget '--'?\n");
1703 usage();
1704 }
1705 }
1706
1707 if (primary.c_path == NULL) {
1708 warnx("A primary compiler must be specified");
1709 usage();
1710 }
1711
1712 do_serial = (getenv("CW_SHADOW_SERIAL") == NULL) ? B_FALSE : B_TRUE;
1713 do_exec = (getenv("CW_NO_EXEC") == NULL) ? B_TRUE : B_FALSE;
1714
1715 /* Leave room for argv[0] */
1716 argc -= (optind - 1);
1717 argv += (optind - 1);
1718
1719 main_ctx->i_oldargc = argc;
1720 main_ctx->i_oldargv = argv;
1721 main_ctx->i_flags = CW_F_XLATE;
1722 if (nflg == 0)
1723 main_ctx->i_flags |= CW_F_ECHO;
1724 if (do_exec)
1725 main_ctx->i_flags |= CW_F_EXEC;
1726 if (Cflg)
1727 main_ctx->i_flags |= CW_F_CXX;
1728 main_ctx->i_compiler = &primary;
1729
1730 if (cflg) {
1731 (void) fputs(primary.c_path, stdout);
1732 }
1733
1734 if (vflg) {
1735 (void) printf("cw version %s\n", CW_VERSION);
1736 (void) fflush(stdout);
1737 main_ctx->i_flags &= ~CW_F_ECHO;
1738 main_ctx->i_flags |= CW_F_PROG | CW_F_EXEC;
1739 do_serial = 1;
1740 }
1741
1742 ret |= exec_ctx(main_ctx, do_serial);
1743
1744 for (int i = 0; i < nshadows; i++) {
1745 int r;
1746 cw_ictx_t *shadow_ctx;
1747
1748 if ((shadow_ctx = newictx()) == NULL)
1749 nomem();
1750
1751 memcpy(shadow_ctx, main_ctx, sizeof (cw_ictx_t));
1752
1753 shadow_ctx->i_flags |= CW_F_SHADOW;
1754 shadow_ctx->i_compiler = &shadows[i];
1755
1756 r = exec_ctx(shadow_ctx, do_serial);
1757 if (r == 0) {
1758 shadow_ctx->i_next = main_ctx->i_next;
1759 main_ctx->i_next = shadow_ctx;
1760 }
1761 ret |= r;
1762 }
1763
1764 if (!do_serial) {
1765 cw_ictx_t *next = main_ctx;
1766 while (next != NULL) {
1767 cw_ictx_t *toreap = next;
1768 next = next->i_next;
1769 ret |= reap(toreap);
1770 }
1771 }
1772
1773 return (ret);
1774 }