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 newae(ctx->i_ae, ctx->i_discard);
665 } else {
666 newae(ctx->i_ae, arg);
667 }
668 in_output = 0;
669 continue;
670 }
671
672 if (ctx->i_flags & CW_F_CXX) {
673 if (strncmp(arg, "-_g++=", 6) == 0) {
674 newae(ctx->i_ae, strchr(arg, '=') + 1);
675 continue;
676 }
677 if (strncmp(arg, "-compat=", 8) == 0) {
678 /* discard -compat=4 and -compat=5 */
679 continue;
680 }
681 if (strcmp(arg, "-Qoption") == 0) {
682 /* discard -Qoption and its two arguments */
683 if (ctx->i_oldargc < 3)
684 error(arg);
685 ctx->i_oldargc -= 2;
686 ctx->i_oldargv += 2;
687 continue;
688 }
689 if (strcmp(arg, "-xwe") == 0) {
690 /* turn warnings into errors */
691 newae(ctx->i_ae, "-Werror");
692 continue;
693 }
694 if (strcmp(arg, "-norunpath") == 0) {
695 /* gcc has no corresponding option */
696 continue;
697 }
698 if (strcmp(arg, "-nolib") == 0) {
699 /* -nodefaultlibs is on by default */
700 nolibc = 1;
701 continue;
702 }
703 #if defined(__sparc)
704 if (strcmp(arg, "-cg92") == 0) {
705 mflag |= xlate_xtb(ctx->i_ae, "v8");
706 xlate(ctx->i_ae, "super", xchip_tbl);
707 continue;
708 }
709 #endif /* __sparc */
710 }
711
712 switch ((c = arg[1])) {
713 case '_':
714 if ((strncmp(arg, nameflag, strlen(nameflag)) == 0) ||
715 (strncmp(arg, "-_gcc=", 6) == 0) ||
716 (strncmp(arg, "-_gnu=", 6) == 0)) {
717 newae(ctx->i_ae, strchr(arg, '=') + 1);
718 }
719 break;
720 case '#':
721 if (arglen == 1) {
722 newae(ctx->i_ae, "-v");
723 break;
724 }
725 error(arg);
726 break;
727 case 'f':
728 if ((strcmp(arg, "-fpic") == 0) ||
729 (strcmp(arg, "-fPIC") == 0)) {
730 newae(ctx->i_ae, arg);
731 break;
732 }
733 error(arg);
734 break;
735 case 'g':
736 newae(ctx->i_ae, "-gdwarf-2");
737 break;
738 case 'E':
739 if (arglen == 1) {
740 newae(ctx->i_ae, "-xc");
741 newae(ctx->i_ae, arg);
742 op = CW_O_PREPROCESS;
743 nolibc = 1;
744 break;
745 }
746 error(arg);
747 break;
748 case 'c':
749 case 'S':
750 if (arglen == 1) {
751 op = CW_O_COMPILE;
752 nolibc = 1;
753 }
754 /* FALLTHROUGH */
755 case 'C':
756 case 'H':
757 case 'p':
758 if (arglen == 1) {
759 newae(ctx->i_ae, arg);
760 break;
761 }
762 error(arg);
763 break;
764 case 'A':
765 case 'h':
766 case 'I':
767 case 'i':
768 case 'L':
769 case 'l':
770 case 'R':
771 case 'U':
772 case 'u':
773 case 'w':
774 newae(ctx->i_ae, arg);
775 break;
776 case 'o':
777 seen_o = 1;
778 if (arglen == 1) {
779 in_output = 1;
780 newae(ctx->i_ae, arg);
781 } else if (ctx->i_flags & CW_F_SHADOW) {
782 newae(ctx->i_ae, "-o");
783 ctx->i_discard = discard_file_name(arg);
784 newae(ctx->i_ae, ctx->i_discard);
785 } else {
786 newae(ctx->i_ae, arg);
787 }
788 break;
789 case 'D':
790 newae(ctx->i_ae, arg);
791 /*
792 * XXX Clearly a hack ... do we need _KADB too?
793 */
794 if (strcmp(arg, "-D_KERNEL") == 0 ||
795 strcmp(arg, "-D_BOOT") == 0)
796 newae(ctx->i_ae, "-ffreestanding");
797 break;
798 case 'd':
799 if (arglen == 2) {
800 if (strcmp(arg, "-dy") == 0) {
801 newae(ctx->i_ae, "-Wl,-dy");
802 break;
803 }
804 if (strcmp(arg, "-dn") == 0) {
805 newae(ctx->i_ae, "-Wl,-dn");
806 break;
807 }
808 }
809 if (strcmp(arg, "-dalign") == 0) {
810 /*
811 * -dalign forces alignment in some cases;
812 * gcc does not need any flag to do this.
813 */
814 break;
815 }
816 error(arg);
817 break;
818 case 'e':
819 if (strcmp(arg,
820 "-erroff=E_EMPTY_TRANSLATION_UNIT") == 0) {
821 /*
822 * Accept but ignore this -- gcc doesn't
823 * seem to complain about empty translation
824 * units
825 */
826 break;
827 }
828 /* XX64 -- ignore all -erroff= options, for now */
829 if (strncmp(arg, "-erroff=", 8) == 0)
830 break;
831 if (strcmp(arg, "-errtags=yes") == 0) {
832 warnings(ctx->i_ae);
833 break;
834 }
835 if (strcmp(arg, "-errwarn=%all") == 0) {
836 newae(ctx->i_ae, "-Werror");
837 break;
838 }
839 error(arg);
840 break;
841 case 'G':
842 newae(ctx->i_ae, "-shared");
843 nolibc = 1;
844 break;
845 case 'k':
846 if (strcmp(arg, "-keeptmp") == 0) {
847 newae(ctx->i_ae, "-save-temps");
848 break;
849 }
850 error(arg);
851 break;
852 case 'm':
853 if (strcmp(arg, "-mt") == 0) {
854 newae(ctx->i_ae, "-D_REENTRANT");
855 break;
856 }
857 if (strcmp(arg, "-m64") == 0) {
858 newae(ctx->i_ae, "-m64");
859 #if defined(__x86)
860 newae(ctx->i_ae, "-mtune=opteron");
861 #endif
862 mflag |= M64;
863 break;
864 }
865 if (strcmp(arg, "-m32") == 0) {
866 newae(ctx->i_ae, "-m32");
867 mflag |= M32;
868 break;
869 }
870 error(arg);
871 break;
872 case 'B': /* linker options */
873 case 'M':
874 case 'z':
875 {
876 char *opt;
877 size_t len;
878 char *s;
879
880 if (arglen == 1) {
881 opt = *++ctx->i_oldargv;
882 if (opt == NULL || *opt == '\0')
883 error(arg);
884 ctx->i_oldargc--;
885 } else {
886 opt = arg + 2;
887 }
888 len = strlen(opt) + 7;
889 if ((s = malloc(len)) == NULL)
890 nomem();
891 (void) snprintf(s, len, "-Wl,-%c%s", c, opt);
892 newae(ctx->i_ae, s);
893 free(s);
894 }
895 break;
896 case 'O':
897 if (arglen == 1) {
898 newae(ctx->i_ae, "-O");
899 break;
900 }
901 error(arg);
902 break;
903 case 'P':
904 /*
905 * We could do '-E -o filename.i', but that's hard,
906 * and we don't need it for the case that's triggering
907 * this addition. We'll require the user to specify
908 * -o in the Makefile. If they don't they'll find out
909 * in a hurry.
910 */
911 newae(ctx->i_ae, "-E");
912 op = CW_O_PREPROCESS;
913 nolibc = 1;
914 break;
915 case 's':
916 if (arglen == 1) {
917 newae(ctx->i_ae, "-Wl,-s");
918 break;
919 }
920 error(arg);
921 break;
922 case 't':
923 if (arglen == 1) {
924 newae(ctx->i_ae, "-Wl,-t");
925 break;
926 }
927 error(arg);
928 break;
929 case 'V':
930 if (arglen == 1) {
931 ctx->i_flags &= ~CW_F_ECHO;
932 newae(ctx->i_ae, "--version");
933 break;
934 }
935 error(arg);
936 break;
937 case 'v':
938 if (arglen == 1) {
939 warnings(ctx->i_ae);
940 break;
941 }
942 error(arg);
943 break;
944 case 'W':
945 if (strncmp(arg, "-Wp,-xc99", 9) == 0) {
946 /*
947 * gcc's preprocessor will accept c99
948 * regardless, so accept and ignore.
949 */
950 break;
951 }
952 if (strncmp(arg, "-Wa,", 4) == 0 ||
953 strncmp(arg, "-Wp,", 4) == 0 ||
954 strncmp(arg, "-Wl,", 4) == 0) {
955 newae(ctx->i_ae, arg);
956 break;
957 }
958 if (strcmp(arg, "-W0,-noglobal") == 0 ||
959 strcmp(arg, "-W0,-xglobalstatic") == 0) {
960 /*
961 * gcc doesn't prefix local symbols
962 * in debug mode, so this is not needed.
963 */
964 break;
965 }
966 if (strcmp(arg, "-W0,-Lt") == 0) {
967 /*
968 * Generate tests at the top of loops.
969 * There is no direct gcc equivalent, ignore.
970 */
971 break;
972 }
973 if (strcmp(arg, "-W0,-xdbggen=no%usedonly") == 0) {
974 newae(ctx->i_ae,
975 "-fno-eliminate-unused-debug-symbols");
976 newae(ctx->i_ae,
977 "-fno-eliminate-unused-debug-types");
978 break;
979 }
980 if (strcmp(arg, "-W2,-xwrap_int") == 0) {
981 /*
982 * Use the legacy behaviour (pre-SS11)
983 * for integer wrapping.
984 * gcc does not need this.
985 */
986 break;
987 }
988 if (strcmp(arg, "-Wd,-xsafe=unboundsym") == 0) {
989 /*
990 * Prevents optimizing away checks for
991 * unbound weak symbol addresses. gcc does
992 * not do this, so it's not needed.
993 */
994 break;
995 }
996 if (strncmp(arg, "-Wc,-xcode=", 11) == 0) {
997 xlate(ctx->i_ae, arg + 11, xcode_tbl);
998 break;
999 }
1000 if (strncmp(arg, "-Wc,-Qiselect", 13) == 0) {
1001 /*
1002 * Prevents insertion of register symbols.
1003 * gcc doesn't do this, so ignore it.
1004 */
1005 break;
1006 }
1007 if (strcmp(arg, "-Wc,-Qassembler-ounrefsym=0") == 0) {
1008 /*
1009 * Prevents optimizing away of static variables.
1010 * gcc does not do this, so it's not needed.
1011 */
1012 break;
1013 }
1014 #if defined(__x86)
1015 if (strcmp(arg, "-Wu,-save_args") == 0) {
1016 newae(ctx->i_ae, "-msave-args");
1017 break;
1018 }
1019 #endif /* __x86 */
1020 error(arg);
1021 break;
1022 case 'X':
1023 if (strcmp(arg, "-Xa") == 0 ||
1024 strcmp(arg, "-Xt") == 0) {
1025 break;
1026 }
1027 if (strcmp(arg, "-Xs") == 0) {
1028 Xsmode(ctx->i_ae);
1029 break;
1030 }
1031 error(arg);
1032 break;
1033 case 'x':
1034 if (arglen == 1)
1035 error(arg);
1036 switch (arg[2]) {
1037 case 'a':
1038 if (strncmp(arg, "-xarch=", 7) == 0) {
1039 mflag |= xlate_xtb(ctx->i_ae, arg + 7);
1040 break;
1041 }
1042 error(arg);
1043 break;
1044 case 'b':
1045 if (strncmp(arg, "-xbuiltin=", 10) == 0) {
1046 if (strcmp(arg + 10, "%all"))
1047 newae(ctx->i_ae, "-fbuiltin");
1048 break;
1049 }
1050 error(arg);
1051 break;
1052 case 'C':
1053 /* Accept C++ style comments -- ignore */
1054 if (strcmp(arg, "-xCC") == 0)
1055 break;
1056 error(arg);
1057 break;
1058 case 'c':
1059 if (strncmp(arg, "-xc99=%all", 10) == 0) {
1060 newae(ctx->i_ae, "-std=gnu99");
1061 break;
1062 }
1063 if (strncmp(arg, "-xc99=%none", 11) == 0) {
1064 newae(ctx->i_ae, "-std=gnu89");
1065 break;
1066 }
1067 if (strncmp(arg, "-xchip=", 7) == 0) {
1068 xlate(ctx->i_ae, arg + 7, xchip_tbl);
1069 break;
1070 }
1071 if (strncmp(arg, "-xcode=", 7) == 0) {
1072 xlate(ctx->i_ae, arg + 7, xcode_tbl);
1073 break;
1074 }
1075 if (strncmp(arg, "-xcrossfile", 11) == 0)
1076 break;
1077 error(arg);
1078 break;
1079 case 'd':
1080 if (strncmp(arg, "-xdebugformat=", 14) == 0)
1081 break;
1082 error(arg);
1083 break;
1084 case 'F':
1085 /*
1086 * Compile for mapfile reordering, or unused
1087 * section elimination, syntax can be -xF or
1088 * more complex, like -xF=%all -- ignore.
1089 */
1090 if (strncmp(arg, "-xF", 3) == 0)
1091 break;
1092 error(arg);
1093 break;
1094 case 'i':
1095 if (strncmp(arg, "-xinline", 8) == 0)
1096 /* No inlining; ignore */
1097 break;
1098 if (strcmp(arg, "-xildon") == 0 ||
1099 strcmp(arg, "-xildoff") == 0)
1100 /* No incremental linking; ignore */
1101 break;
1102 error(arg);
1103 break;
1104 #if defined(__x86)
1105 case 'm':
1106 if (strcmp(arg, "-xmodel=kernel") == 0) {
1107 newae(ctx->i_ae, "-ffreestanding");
1108 newae(ctx->i_ae, "-mno-red-zone");
1109 model = "-mcmodel=kernel";
1110 nolibc = 1;
1111 break;
1112 }
1113 error(arg);
1114 break;
1115 #endif /* __x86 */
1116 case 'O':
1117 if (strncmp(arg, "-xO", 3) == 0) {
1118 size_t len = strlen(arg);
1119 char *s = NULL;
1120 int c = *(arg + 3);
1121 int level;
1122
1123 if (len != 4 || !isdigit(c))
1124 error(arg);
1125
1126 level = atoi(arg + 3);
1127 if (level > 5)
1128 error(arg);
1129 if (level >= 2) {
1130 /*
1131 * For gcc-3.4.x at -O2 we
1132 * need to disable optimizations
1133 * that break ON.
1134 */
1135 optim_disable(ctx->i_ae, level);
1136 /*
1137 * limit -xO3 to -O2 as well.
1138 */
1139 level = 2;
1140 }
1141 if (asprintf(&s, "-O%d", level) == -1)
1142 nomem();
1143 newae(ctx->i_ae, s);
1144 free(s);
1145 break;
1146 }
1147 error(arg);
1148 break;
1149 case 'r':
1150 if (strncmp(arg, "-xregs=", 7) == 0) {
1151 xlate(ctx->i_ae, arg + 7, xregs_tbl);
1152 break;
1153 }
1154 error(arg);
1155 break;
1156 case 's':
1157 if (strcmp(arg, "-xs") == 0 ||
1158 strcmp(arg, "-xspace") == 0 ||
1159 strcmp(arg, "-xstrconst") == 0)
1160 break;
1161 error(arg);
1162 break;
1163 case 't':
1164 if (strncmp(arg, "-xtarget=", 9) == 0) {
1165 xlate(ctx->i_ae, arg + 9, xtarget_tbl);
1166 break;
1167 }
1168 error(arg);
1169 break;
1170 case 'e':
1171 case 'h':
1172 case 'l':
1173 default:
1174 error(arg);
1175 break;
1176 }
1177 break;
1178 case 'Y':
1179 if (arglen == 1) {
1180 if ((arg = *++ctx->i_oldargv) == NULL ||
1181 *arg == '\0')
1182 error("-Y");
1183 ctx->i_oldargc--;
1184 arglen = strlen(arg + 1);
1185 } else {
1186 arg += 2;
1187 }
1188 /* Just ignore -YS,... for now */
1189 if (strncmp(arg, "S,", 2) == 0)
1190 break;
1191 if (strncmp(arg, "l,", 2) == 0) {
1192 char *s = strdup(arg);
1193 s[0] = '-';
1194 s[1] = 'B';
1195 newae(ctx->i_ae, s);
1196 free(s);
1197 break;
1198 }
1199 if (strncmp(arg, "I,", 2) == 0) {
1200 char *s = strdup(arg);
1201 s[0] = '-';
1202 s[1] = 'I';
1203 newae(ctx->i_ae, "-nostdinc");
1204 newae(ctx->i_ae, s);
1205 free(s);
1206 break;
1207 }
1208 error(arg);
1209 break;
1210 case 'Q':
1211 /*
1212 * We could map -Qy into -Wl,-Qy etc.
1213 */
1214 default:
1215 error(arg);
1216 break;
1217 }
1218 }
1219
1220 free(nameflag);
1221
1222 /*
1223 * When compiling multiple source files in a single invocation some
1224 * compilers output objects into the current directory with
1225 * predictable and conventional names.
1226 *
1227 * We prevent any attempt to compile multiple files at once so that
1228 * any such objects created by a shadow can't escape into a later
1229 * link-edit.
1230 */
1231 if (c_files > 1 && op != CW_O_PREPROCESS) {
1232 errx(2, "multiple source files are "
1233 "allowed only with -E or -P");
1234 }
1235
1236 /*
1237 * Make sure that we do not have any unintended interactions between
1238 * the xarch options passed in and the version of the Studio compiler
1239 * used.
1240 */
1241 if ((mflag & (SS11|SS12)) == (SS11|SS12)) {
1242 errx(2,
1243 "Conflicting \"-xarch=\" flags (both Studio 11 and 12)\n");
1244 }
1245
1246 switch (mflag) {
1247 case 0:
1248 /* FALLTHROUGH */
1249 case M32:
1250 #if defined(__sparc)
1251 /*
1252 * Only -m32 is defined and so put in the missing xarch
1253 * translation.
1254 */
1255 newae(ctx->i_ae, "-mcpu=v8");
1256 newae(ctx->i_ae, "-mno-v8plus");
1257 #endif
1258 break;
1259 case M64:
1260 #if defined(__sparc)
1261 /*
1262 * Only -m64 is defined and so put in the missing xarch
1263 * translation.
1264 */
1265 newae(ctx->i_ae, "-mcpu=v9");
1266 #endif
1267 break;
1268 case SS12:
1269 #if defined(__sparc)
1270 /* no -m32/-m64 flag used - this is an error for sparc builds */
1271 (void) fprintf(stderr, "No -m32/-m64 flag defined\n");
1272 exit(2);
1273 #endif
1274 break;
1275 case SS11:
1276 /* FALLTHROUGH */
1277 case (SS11|M32):
1278 case (SS11|M64):
1279 break;
1280 case (SS12|M32):
1281 #if defined(__sparc)
1282 /*
1283 * Need to add in further 32 bit options because with SS12
1284 * the xarch=sparcvis option can be applied to 32 or 64
1285 * bit, and so the translatation table (xtbl) cannot handle
1286 * that.
1287 */
1288 newae(ctx->i_ae, "-mv8plus");
1289 #endif
1290 break;
1291 case (SS12|M64):
1292 break;
1293 default:
1294 (void) fprintf(stderr,
1295 "Incompatible -xarch= and/or -m32/-m64 options used.\n");
1296 exit(2);
1297 }
1298
1299 if (ctx->i_flags & CW_F_SHADOW) {
1300 if (op == CW_O_PREPROCESS)
1301 exit(0);
1302 else if (op == CW_O_LINK && c_files == 0)
1303 exit(0);
1304 }
1305
1306 if (model != NULL)
1307 newae(ctx->i_ae, model);
1308 if (!nolibc)
1309 newae(ctx->i_ae, "-lc");
1310 if (!seen_o && (ctx->i_flags & CW_F_SHADOW)) {
1311 ctx->i_discard = discard_file_name(NULL);
1312 newae(ctx->i_ae, "-o");
1313 newae(ctx->i_ae, ctx->i_discard);
1314 }
1315 }
1316
1317 static void
1318 do_cc(cw_ictx_t *ctx)
1319 {
1320 int in_output = 0, seen_o = 0, c_files = 0;
1321 cw_op_t op = CW_O_LINK;
1322 char *nameflag;
1323
1324 if (ctx->i_flags & CW_F_PROG) {
1325 newae(ctx->i_ae, "-V");
1326 return;
1327 }
1328
1329 if (asprintf(&nameflag, "-_%s=", ctx->i_compiler->c_name) == -1)
1330 nomem();
1331
1332 while (--ctx->i_oldargc > 0) {
1333 char *arg = *++ctx->i_oldargv;
1334 size_t arglen = strlen(arg);
1335
1336 if (strncmp(arg, "-_CC=", 5) == 0) {
1337 newae(ctx->i_ae, strchr(arg, '=') + 1);
1338 continue;
1339 }
1340
1341 if (*arg != '-') {
1342 if (!in_output && arglen > 2 &&
1343 arg[arglen - 2] == '.' &&
1344 (arg[arglen - 1] == 'S' || arg[arglen - 1] == 's' ||
1345 arg[arglen - 1] == 'c' || arg[arglen - 1] == 'i'))
1346 c_files++;
1347
1348 if (in_output == 0 || !(ctx->i_flags & CW_F_SHADOW)) {
1349 newae(ctx->i_ae, arg);
1350 } else {
1351 in_output = 0;
1352 ctx->i_discard = discard_file_name(arg);
1353 newae(ctx->i_ae, ctx->i_discard);
1354 }
1355 continue;
1356 }
1357 switch (*(arg + 1)) {
1358 case '_':
1359 if ((strncmp(arg, nameflag, strlen(nameflag)) == 0) ||
1360 (strncmp(arg, "-_cc=", 5) == 0) ||
1361 (strncmp(arg, "-_sun=", 6) == 0)) {
1362 newae(ctx->i_ae, strchr(arg, '=') + 1);
1363 }
1364 break;
1365
1366 case 'V':
1367 ctx->i_flags &= ~CW_F_ECHO;
1368 newae(ctx->i_ae, arg);
1369 break;
1370 case 'o':
1371 seen_o = 1;
1372 if (strlen(arg) == 2) {
1373 in_output = 1;
1374 newae(ctx->i_ae, arg);
1375 } else if (ctx->i_flags & CW_F_SHADOW) {
1376 newae(ctx->i_ae, "-o");
1377 ctx->i_discard = discard_file_name(arg);
1378 newae(ctx->i_ae, ctx->i_discard);
1379 } else {
1380 newae(ctx->i_ae, arg);
1381 }
1382 break;
1383 case 'c':
1384 case 'S':
1385 if (strlen(arg) == 2)
1386 op = CW_O_COMPILE;
1387 newae(ctx->i_ae, arg);
1388 break;
1389 case 'E':
1390 case 'P':
1391 if (strlen(arg) == 2)
1392 op = CW_O_PREPROCESS;
1393 /*FALLTHROUGH*/
1394 default:
1395 newae(ctx->i_ae, arg);
1396 }
1397 }
1398
1399 free(nameflag);
1400
1401 /* See the comment on this same code in do_gcc() */
1402 if (c_files > 1 && op != CW_O_PREPROCESS) {
1403 errx(2, "multiple source files are "
1404 "allowed only with -E or -P");
1405 }
1406
1407 if (ctx->i_flags & CW_F_SHADOW) {
1408 if (op == CW_O_PREPROCESS)
1409 exit(0);
1410 else if (op == CW_O_LINK && c_files == 0)
1411 exit(0);
1412 }
1413
1414 if (!seen_o && (ctx->i_flags & CW_F_SHADOW)) {
1415 newae(ctx->i_ae, "-o");
1416 ctx->i_discard = discard_file_name(NULL);
1417 newae(ctx->i_ae, ctx->i_discard);
1418 }
1419 }
1420
1421 static void
1422 prepctx(cw_ictx_t *ctx)
1423 {
1424 newae(ctx->i_ae, ctx->i_compiler->c_path);
1425
1426 if (ctx->i_flags & CW_F_PROG) {
1427 (void) printf("%s: %s\n", (ctx->i_flags & CW_F_SHADOW) ?
1428 "shadow" : "primary", ctx->i_compiler->c_path);
1429 (void) fflush(stdout);
1430 }
1431
1432 if (!(ctx->i_flags & CW_F_XLATE))
1433 return;
1434
1435 switch (ctx->i_compiler->c_style) {
1436 case SUN:
1437 do_cc(ctx);
1438 break;
1439 case GNU:
1440 do_gcc(ctx);
1441 break;
1442 }
1443 }
1444
1445 static int
1446 invoke(cw_ictx_t *ctx)
1447 {
1448 char **newargv;
1449 int ac;
1450 struct ae *a;
1451
1452 if ((newargv = calloc(sizeof (*newargv), ctx->i_ae->ael_argc + 1)) ==
1453 NULL)
1454 nomem();
1455
1456 if (ctx->i_flags & CW_F_ECHO)
1457 (void) fprintf(stderr, "+ ");
1458
1459 for (ac = 0, a = ctx->i_ae->ael_head; a; a = a->ae_next, ac++) {
1460 newargv[ac] = a->ae_arg;
1461 if (ctx->i_flags & CW_F_ECHO)
1462 (void) fprintf(stderr, "%s ", a->ae_arg);
1463 if (a == ctx->i_ae->ael_tail)
1464 break;
1465 }
1466
1467 if (ctx->i_flags & CW_F_ECHO) {
1468 (void) fprintf(stderr, "\n");
1469 (void) fflush(stderr);
1470 }
1471
1472 if (!(ctx->i_flags & CW_F_EXEC))
1473 return (0);
1474
1475 /*
1476 * We must fix up the environment here so that the dependency files are
1477 * not trampled by the shadow compiler. Also take care of GCC
1478 * environment variables that will throw off gcc. This assumes a primary
1479 * gcc.
1480 */
1481 if ((ctx->i_flags & CW_F_SHADOW) &&
1482 (unsetenv("SUNPRO_DEPENDENCIES") != 0 ||
1483 unsetenv("DEPENDENCIES_OUTPUT") != 0 ||
1484 unsetenv("GCC_ROOT") != 0)) {
1485 (void) fprintf(stderr, "error: environment setup failed: %s\n",
1486 strerror(errno));
1487 return (-1);
1488 }
1489
1490 (void) execv(newargv[0], newargv);
1491 warn("couldn't run %s", newargv[0]);
1492
1493 return (-1);
1494 }
1495
1496 static int
1497 reap(cw_ictx_t *ctx)
1498 {
1499 int status, ret = 0;
1500 char buf[1024];
1501 struct stat s;
1502
1503 /*
1504 * Only wait for one specific child.
1505 */
1506 if (ctx->i_pid <= 0)
1507 return (-1);
1508
1509 do {
1510 if (waitpid(ctx->i_pid, &status, 0) < 0) {
1511 warn("cannot reap child");
1512 return (-1);
1513 }
1514 if (status != 0) {
1515 if (WIFSIGNALED(status)) {
1516 ret = -WTERMSIG(status);
1517 break;
1518 } else if (WIFEXITED(status)) {
1519 ret = WEXITSTATUS(status);
1520 break;
1521 }
1522 }
1523 } while (!WIFEXITED(status) && !WIFSIGNALED(status));
1524
1525 (void) unlink(ctx->i_discard);
1526 free(ctx->i_discard);
1527
1528 if (stat(ctx->i_stderr, &s) < 0) {
1529 warn("stat failed on child cleanup");
1530 return (-1);
1531 }
1532 if (s.st_size != 0) {
1533 FILE *f;
1534
1535 if ((f = fopen(ctx->i_stderr, "r")) != NULL) {
1536 while (fgets(buf, sizeof (buf), f))
1537 (void) fprintf(stderr, "%s", buf);
1538 (void) fflush(stderr);
1539 (void) fclose(f);
1540 }
1541 }
1542 (void) unlink(ctx->i_stderr);
1543 free(ctx->i_stderr);
1544
1545 /*
1546 * cc returns an error code when given -V; we want that to succeed.
1547 */
1548 if (ctx->i_flags & CW_F_PROG)
1549 return (0);
1550
1551 return (ret);
1552 }
1553
1554 static int
1555 exec_ctx(cw_ictx_t *ctx, int block)
1556 {
1557 if ((ctx->i_stderr = tempnam(NULL, ".cw")) == NULL) {
1558 nomem();
1559 return (-1);
1560 }
1561
1562 if ((ctx->i_pid = fork()) == 0) {
1563 int fd;
1564
1565 (void) fclose(stderr);
1566 if ((fd = open(ctx->i_stderr, O_WRONLY | O_CREAT | O_EXCL,
1567 0666)) < 0) {
1568 err(1, "open failed for standard error");
1569 }
1570 if (dup2(fd, 2) < 0) {
1571 err(1, "dup2 failed for standard error");
1572 }
1573 if (fd != 2)
1574 (void) close(fd);
1575 if (freopen("/dev/fd/2", "w", stderr) == NULL) {
1576 err(1, "freopen failed for /dev/fd/2");
1577 }
1578
1579 prepctx(ctx);
1580 exit(invoke(ctx));
1581 }
1582
1583 if (ctx->i_pid < 0) {
1584 err(1, "fork failed");
1585 }
1586
1587 if (block)
1588 return (reap(ctx));
1589
1590 return (0);
1591 }
1592
1593 static void
1594 parse_compiler(const char *spec, cw_compiler_t *compiler)
1595 {
1596 char *tspec, *token;
1597
1598 if ((tspec = strdup(spec)) == NULL)
1599 nomem();
1600
1601 if ((token = strsep(&tspec, ",")) == NULL)
1602 errx(1, "Compiler is missing a name: %s", spec);
1603 compiler->c_name = token;
1604
1605 if ((token = strsep(&tspec, ",")) == NULL)
1606 errx(1, "Compiler is missing a path: %s", spec);
1607 compiler->c_path = token;
1608
1609 if ((token = strsep(&tspec, ",")) == NULL)
1610 errx(1, "Compiler is missing a style: %s", spec);
1611
1612 if ((strcasecmp(token, "gnu") == 0) ||
1613 (strcasecmp(token, "gcc") == 0))
1614 compiler->c_style = GNU;
1615 else if ((strcasecmp(token, "sun") == 0) ||
1616 (strcasecmp(token, "cc") == 0))
1617 compiler->c_style = SUN;
1618 else
1619 errx(1, "unknown compiler style: %s", token);
1620
1621 if (tspec != NULL)
1622 errx(1, "Excess tokens in compiler: %s", spec);
1623 }
1624
1625 int
1626 main(int argc, char **argv)
1627 {
1628 int ch;
1629 cw_compiler_t primary = { NULL, NULL, 0 };
1630 cw_compiler_t shadows[10];
1631 int nshadows = 0;
1632 int ret = 0;
1633 boolean_t do_serial = B_FALSE;
1634 boolean_t do_exec = B_FALSE;
1635 boolean_t vflg = B_FALSE;
1636 boolean_t Cflg = B_FALSE;
1637 boolean_t cflg = B_FALSE;
1638 boolean_t nflg = B_FALSE;
1639
1640 cw_ictx_t *main_ctx;
1641
1642 static struct option longopts[] = {
1643 { "compiler", no_argument, NULL, 'c' },
1644 { "noecho", no_argument, NULL, 'n' },
1645 { "primary", required_argument, NULL, 'p' },
1646 { "shadow", required_argument, NULL, 's' },
1647 { "versions", no_argument, NULL, 'v' },
1648 { NULL, 0, NULL, 0 },
1649 };
1650
1651
1652 if ((main_ctx = newictx()) == NULL)
1653 nomem();
1654
1655 while ((ch = getopt_long(argc, argv, "C", longopts, NULL)) != -1) {
1656 switch (ch) {
1657 case 'c':
1658 cflg = B_TRUE;
1659 break;
1660 case 'C':
1661 Cflg = B_TRUE;
1662 break;
1663 case 'n':
1664 nflg = B_TRUE;
1665 break;
1666 case 'p':
1667 if (primary.c_path != NULL) {
1668 warnx("Only one primary compiler may "
1669 "be specified");
1670 usage();
1671 }
1672
1673 parse_compiler(optarg, &primary);
1674 break;
1675 case 's':
1676 if (nshadows >= 10)
1677 errx(1, "May only use 10 shadows at "
1678 "the moment");
1679 parse_compiler(optarg, &shadows[nshadows]);
1680 nshadows++;
1681 break;
1682 case 'v':
1683 vflg = B_TRUE;
1684 break;
1685 default:
1686 (void) fprintf(stderr, "Did you forget '--'?\n");
1687 usage();
1688 }
1689 }
1690
1691 if (primary.c_path == NULL) {
1692 warnx("A primary compiler must be specified");
1693 usage();
1694 }
1695
1696 do_serial = (getenv("CW_SHADOW_SERIAL") == NULL) ? B_FALSE : B_TRUE;
1697 do_exec = (getenv("CW_NO_EXEC") == NULL) ? B_TRUE : B_FALSE;
1698
1699 /* Leave room for argv[0] */
1700 argc -= (optind - 1);
1701 argv += (optind - 1);
1702
1703 main_ctx->i_oldargc = argc;
1704 main_ctx->i_oldargv = argv;
1705 main_ctx->i_flags = CW_F_XLATE;
1706 if (nflg == 0)
1707 main_ctx->i_flags |= CW_F_ECHO;
1708 if (do_exec)
1709 main_ctx->i_flags |= CW_F_EXEC;
1710 if (Cflg)
1711 main_ctx->i_flags |= CW_F_CXX;
1712 main_ctx->i_compiler = &primary;
1713
1714 if (cflg) {
1715 (void) fputs(primary.c_path, stdout);
1716 }
1717
1718 if (vflg) {
1719 (void) printf("cw version %s\n", CW_VERSION);
1720 (void) fflush(stdout);
1721 main_ctx->i_flags &= ~CW_F_ECHO;
1722 main_ctx->i_flags |= CW_F_PROG | CW_F_EXEC;
1723 do_serial = 1;
1724 }
1725
1726 ret |= exec_ctx(main_ctx, do_serial);
1727
1728 for (int i = 0; i < nshadows; i++) {
1729 int r;
1730 cw_ictx_t *shadow_ctx;
1731
1732 if ((shadow_ctx = newictx()) == NULL)
1733 nomem();
1734
1735 memcpy(shadow_ctx, main_ctx, sizeof (cw_ictx_t));
1736
1737 shadow_ctx->i_flags |= CW_F_SHADOW;
1738 shadow_ctx->i_compiler = &shadows[i];
1739
1740 r = exec_ctx(shadow_ctx, do_serial);
1741 if (r == 0) {
1742 shadow_ctx->i_next = main_ctx->i_next;
1743 main_ctx->i_next = shadow_ctx;
1744 }
1745 ret |= r;
1746 }
1747
1748 if (!do_serial) {
1749 cw_ictx_t *next = main_ctx;
1750 while (next != NULL) {
1751 cw_ictx_t *toreap = next;
1752 next = next->i_next;
1753 ret |= reap(toreap);
1754 }
1755 }
1756
1757 return (ret);
1758 }