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[MAXPATHLEN];
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 /* ARGSUSED */
483 static void
484 Xamode(struct aelist __unused *h)
485 {
486 }
487
488 static void
489 Xsmode(struct aelist *h)
490 {
491 static int xsonce;
492
493 if (xsonce++)
494 return;
495
496 newae(h, "-traditional");
497 newae(h, "-traditional-cpp");
498 }
499
500 static void
501 usage()
502 {
503 extern char *__progname;
504 (void) fprintf(stderr,
505 "usage: %s [-C] [--versions] --primary <compiler> "
506 "[--shadow <compiler>]... -- cflags...\n",
507 __progname);
508 (void) fprintf(stderr, "compilers take the form: name,path,style\n"
509 " - name: a unique name usable in flag specifiers\n"
510 " - path: path to the compiler binary\n"
511 " - style: the style of flags expected: either sun or gnu\n");
512 exit(2);
513 }
514
515 static int
516 xlate_xtb(struct aelist *h, const char *xarg)
517 {
518 int i, j;
519
520 for (i = 0; i < xtbl_size; i++) {
521 if (strcmp(xtbl[i].x_arg, xarg) == 0)
522 break;
523 }
524
525 /*
526 * At the end of the table and so no matching "arg" entry
527 * found and so this must be a bad -xarch= flag.
528 */
529 if (i == xtbl_size)
530 error(xarg);
531
532 for (j = 0; j < TRANS_ENTRY; j++) {
533 if (xtbl[i].x_trans[j] != NULL)
534 newae(h, xtbl[i].x_trans[j]);
535 else
536 break;
537 }
538 return (xtbl[i].x_flags);
539
540 }
541
542 static void
543 xlate(struct aelist *h, const char *xarg, const char **table)
544 {
545 while (*table != NULL && strcmp(xarg, *table) != 0) {
546 while (*table != NULL)
547 table++;
548 table++;
549 }
550
551 if (*table == NULL)
552 error(xarg);
553
554 table++;
555
556 while (*table != NULL) {
557 newae(h, *table);
558 table++;
559 }
560 }
561
562 static void
563 do_gcc(cw_ictx_t *ctx)
564 {
565 int c;
566 int nolibc = 0;
567 int in_output = 0, seen_o = 0, c_files = 0;
568 cw_op_t op = CW_O_LINK;
569 char *model = NULL;
570 char *nameflag;
571 int mflag = 0;
572
573 if (ctx->i_flags & CW_F_PROG) {
574 newae(ctx->i_ae, "--version");
575 return;
576 }
577
578 newae(ctx->i_ae, "-fident");
579 newae(ctx->i_ae, "-finline");
580 newae(ctx->i_ae, "-fno-inline-functions");
581 newae(ctx->i_ae, "-fno-builtin");
582 newae(ctx->i_ae, "-fno-asm");
583 newae(ctx->i_ae, "-fdiagnostics-show-option");
584 newae(ctx->i_ae, "-nodefaultlibs");
585
586 #if defined(__sparc)
587 /*
588 * The SPARC ldd and std instructions require 8-byte alignment of
589 * their address operand. gcc correctly uses them only when the
590 * ABI requires 8-byte alignment; unfortunately we have a number of
591 * pieces of buggy code that doesn't conform to the ABI. This
592 * flag makes gcc work more like Studio with -xmemalign=4.
593 */
594 newae(ctx->i_ae, "-mno-integer-ldd-std");
595 #endif
596
597 /*
598 * This is needed because 'u' is defined
599 * under a conditional on 'sun'. Should
600 * probably just remove the conditional,
601 * or make it be dependent on '__sun'.
602 *
603 * -Dunix is also missing in enhanced ANSI mode
604 */
605 newae(ctx->i_ae, "-D__sun");
606
607 if (asprintf(&nameflag, "-_%s=", ctx->i_compiler->c_name) == -1)
608 nomem();
609
610 /*
611 * Walk the argument list, translating as we go ..
612 */
613 while (--ctx->i_oldargc > 0) {
614 char *arg = *++ctx->i_oldargv;
615 size_t arglen = strlen(arg);
616
617 if (*arg == '-') {
618 arglen--;
619 } else {
620 /*
621 * Discard inline files that gcc doesn't grok
622 */
623 if (!in_output && arglen > 3 &&
624 strcmp(arg + arglen - 3, ".il") == 0)
625 continue;
626
627 if (!in_output && arglen > 2 &&
628 arg[arglen - 2] == '.' &&
629 (arg[arglen - 1] == 'S' || arg[arglen - 1] == 's' ||
630 arg[arglen - 1] == 'c' || arg[arglen - 1] == 'i'))
631 c_files++;
632
633 /*
634 * Otherwise, filenames and partial arguments
635 * are passed through for gcc to chew on. However,
636 * output is always discarded for the secondary
637 * compiler.
638 */
639 if ((ctx->i_flags & CW_F_SHADOW) && in_output)
640 newae(ctx->i_ae, ctx->i_discard);
641 else
642 newae(ctx->i_ae, arg);
643 in_output = 0;
644 continue;
645 }
646
647 if (ctx->i_flags & CW_F_CXX) {
648 if (strncmp(arg, "-_g++=", 6) == 0) {
649 newae(ctx->i_ae, strchr(arg, '=') + 1);
650 continue;
651 }
652 if (strncmp(arg, "-compat=", 8) == 0) {
653 /* discard -compat=4 and -compat=5 */
654 continue;
655 }
656 if (strcmp(arg, "-Qoption") == 0) {
657 /* discard -Qoption and its two arguments */
658 if (ctx->i_oldargc < 3)
659 error(arg);
660 ctx->i_oldargc -= 2;
661 ctx->i_oldargv += 2;
662 continue;
663 }
664 if (strcmp(arg, "-xwe") == 0) {
665 /* turn warnings into errors */
666 newae(ctx->i_ae, "-Werror");
667 continue;
668 }
669 if (strcmp(arg, "-norunpath") == 0) {
670 /* gcc has no corresponding option */
671 continue;
672 }
673 if (strcmp(arg, "-nolib") == 0) {
674 /* -nodefaultlibs is on by default */
675 nolibc = 1;
676 continue;
677 }
678 #if defined(__sparc)
679 if (strcmp(arg, "-cg92") == 0) {
680 mflag |= xlate_xtb(ctx->i_ae, "v8");
681 xlate(ctx->i_ae, "super", xchip_tbl);
682 continue;
683 }
684 #endif /* __sparc */
685 }
686
687 switch ((c = arg[1])) {
688 case '_':
689 if ((strncmp(arg, nameflag, strlen(nameflag)) == 0) ||
690 (strncmp(arg, "-_gcc=", 6) == 0) ||
691 (strncmp(arg, "-_gnu=", 6) == 0)) {
692 newae(ctx->i_ae, strchr(arg, '=') + 1);
693 }
694 break;
695 case '#':
696 if (arglen == 1) {
697 newae(ctx->i_ae, "-v");
698 break;
699 }
700 error(arg);
701 break;
702 case 'f':
703 if ((strcmp(arg, "-fpic") == 0) ||
704 (strcmp(arg, "-fPIC") == 0)) {
705 newae(ctx->i_ae, arg);
706 break;
707 }
708 error(arg);
709 break;
710 case 'g':
711 newae(ctx->i_ae, "-gdwarf-2");
712 break;
713 case 'E':
714 if (arglen == 1) {
715 newae(ctx->i_ae, "-xc");
716 newae(ctx->i_ae, arg);
717 op = CW_O_PREPROCESS;
718 nolibc = 1;
719 break;
720 }
721 error(arg);
722 break;
723 case 'c':
724 case 'S':
725 if (arglen == 1) {
726 op = CW_O_COMPILE;
727 nolibc = 1;
728 }
729 /* FALLTHROUGH */
730 case 'C':
731 case 'H':
732 case 'p':
733 if (arglen == 1) {
734 newae(ctx->i_ae, arg);
735 break;
736 }
737 error(arg);
738 break;
739 case 'A':
740 case 'h':
741 case 'I':
742 case 'i':
743 case 'L':
744 case 'l':
745 case 'R':
746 case 'U':
747 case 'u':
748 case 'w':
749 newae(ctx->i_ae, arg);
750 break;
751 case 'o':
752 seen_o = 1;
753 if (arglen == 1) {
754 in_output = 1;
755 newae(ctx->i_ae, arg);
756 } else if (ctx->i_flags & CW_F_SHADOW) {
757 newae(ctx->i_ae, "-o");
758 newae(ctx->i_ae, ctx->i_discard);
759 } else {
760 newae(ctx->i_ae, arg);
761 }
762 break;
763 case 'D':
764 newae(ctx->i_ae, arg);
765 /*
766 * XXX Clearly a hack ... do we need _KADB too?
767 */
768 if (strcmp(arg, "-D_KERNEL") == 0 ||
769 strcmp(arg, "-D_BOOT") == 0)
770 newae(ctx->i_ae, "-ffreestanding");
771 break;
772 case 'd':
773 if (arglen == 2) {
774 if (strcmp(arg, "-dy") == 0) {
775 newae(ctx->i_ae, "-Wl,-dy");
776 break;
777 }
778 if (strcmp(arg, "-dn") == 0) {
779 newae(ctx->i_ae, "-Wl,-dn");
780 break;
781 }
782 }
783 if (strcmp(arg, "-dalign") == 0) {
784 /*
785 * -dalign forces alignment in some cases;
786 * gcc does not need any flag to do this.
787 */
788 break;
789 }
790 error(arg);
791 break;
792 case 'e':
793 if (strcmp(arg,
794 "-erroff=E_EMPTY_TRANSLATION_UNIT") == 0) {
795 /*
796 * Accept but ignore this -- gcc doesn't
797 * seem to complain about empty translation
798 * units
799 */
800 break;
801 }
802 /* XX64 -- ignore all -erroff= options, for now */
803 if (strncmp(arg, "-erroff=", 8) == 0)
804 break;
805 if (strcmp(arg, "-errtags=yes") == 0) {
806 warnings(ctx->i_ae);
807 break;
808 }
809 if (strcmp(arg, "-errwarn=%all") == 0) {
810 newae(ctx->i_ae, "-Werror");
811 break;
812 }
813 error(arg);
814 break;
815 case 'G':
816 newae(ctx->i_ae, "-shared");
817 nolibc = 1;
818 break;
819 case 'k':
820 if (strcmp(arg, "-keeptmp") == 0) {
821 newae(ctx->i_ae, "-save-temps");
822 break;
823 }
824 error(arg);
825 break;
826 case 'm':
827 if (strcmp(arg, "-mt") == 0) {
828 newae(ctx->i_ae, "-D_REENTRANT");
829 break;
830 }
831 if (strcmp(arg, "-m64") == 0) {
832 newae(ctx->i_ae, "-m64");
833 #if defined(__x86)
834 newae(ctx->i_ae, "-mtune=opteron");
835 #endif
836 mflag |= M64;
837 break;
838 }
839 if (strcmp(arg, "-m32") == 0) {
840 newae(ctx->i_ae, "-m32");
841 mflag |= M32;
842 break;
843 }
844 error(arg);
845 break;
846 case 'B': /* linker options */
847 case 'M':
848 case 'z':
849 {
850 char *opt;
851 size_t len;
852 char *s;
853
854 if (arglen == 1) {
855 opt = *++ctx->i_oldargv;
856 if (opt == NULL || *opt == '\0')
857 error(arg);
858 ctx->i_oldargc--;
859 } else {
860 opt = arg + 2;
861 }
862 len = strlen(opt) + 7;
863 if ((s = malloc(len)) == NULL)
864 nomem();
865 (void) snprintf(s, len, "-Wl,-%c%s", c, opt);
866 newae(ctx->i_ae, s);
867 free(s);
868 }
869 break;
870 case 'O':
871 if (arglen == 1) {
872 newae(ctx->i_ae, "-O");
873 break;
874 }
875 error(arg);
876 break;
877 case 'P':
878 /*
879 * We could do '-E -o filename.i', but that's hard,
880 * and we don't need it for the case that's triggering
881 * this addition. We'll require the user to specify
882 * -o in the Makefile. If they don't they'll find out
883 * in a hurry.
884 */
885 newae(ctx->i_ae, "-E");
886 op = CW_O_PREPROCESS;
887 nolibc = 1;
888 break;
889 case 's':
890 if (arglen == 1) {
891 newae(ctx->i_ae, "-Wl,-s");
892 break;
893 }
894 error(arg);
895 break;
896 case 't':
897 if (arglen == 1) {
898 newae(ctx->i_ae, "-Wl,-t");
899 break;
900 }
901 error(arg);
902 break;
903 case 'V':
904 if (arglen == 1) {
905 ctx->i_flags &= ~CW_F_ECHO;
906 newae(ctx->i_ae, "--version");
907 break;
908 }
909 error(arg);
910 break;
911 case 'v':
912 if (arglen == 1) {
913 warnings(ctx->i_ae);
914 break;
915 }
916 error(arg);
917 break;
918 case 'W':
919 if (strncmp(arg, "-Wp,-xc99", 9) == 0) {
920 /*
921 * gcc's preprocessor will accept c99
922 * regardless, so accept and ignore.
923 */
924 break;
925 }
926 if (strncmp(arg, "-Wa,", 4) == 0 ||
927 strncmp(arg, "-Wp,", 4) == 0 ||
928 strncmp(arg, "-Wl,", 4) == 0) {
929 newae(ctx->i_ae, arg);
930 break;
931 }
932 if (strcmp(arg, "-W0,-noglobal") == 0 ||
933 strcmp(arg, "-W0,-xglobalstatic") == 0) {
934 /*
935 * gcc doesn't prefix local symbols
936 * in debug mode, so this is not needed.
937 */
938 break;
939 }
940 if (strcmp(arg, "-W0,-Lt") == 0) {
941 /*
942 * Generate tests at the top of loops.
943 * There is no direct gcc equivalent, ignore.
944 */
945 break;
946 }
947 if (strcmp(arg, "-W0,-xdbggen=no%usedonly") == 0) {
948 newae(ctx->i_ae,
949 "-fno-eliminate-unused-debug-symbols");
950 newae(ctx->i_ae,
951 "-fno-eliminate-unused-debug-types");
952 break;
953 }
954 if (strcmp(arg, "-W2,-xwrap_int") == 0) {
955 /*
956 * Use the legacy behaviour (pre-SS11)
957 * for integer wrapping.
958 * gcc does not need this.
959 */
960 break;
961 }
962 if (strcmp(arg, "-Wd,-xsafe=unboundsym") == 0) {
963 /*
964 * Prevents optimizing away checks for
965 * unbound weak symbol addresses. gcc does
966 * not do this, so it's not needed.
967 */
968 break;
969 }
970 if (strncmp(arg, "-Wc,-xcode=", 11) == 0) {
971 xlate(ctx->i_ae, arg + 11, xcode_tbl);
972 break;
973 }
974 if (strncmp(arg, "-Wc,-Qiselect", 13) == 0) {
975 /*
976 * Prevents insertion of register symbols.
977 * gcc doesn't do this, so ignore it.
978 */
979 break;
980 }
981 if (strcmp(arg, "-Wc,-Qassembler-ounrefsym=0") == 0) {
982 /*
983 * Prevents optimizing away of static variables.
984 * gcc does not do this, so it's not needed.
985 */
986 break;
987 }
988 #if defined(__x86)
989 if (strcmp(arg, "-Wu,-save_args") == 0) {
990 newae(ctx->i_ae, "-msave-args");
991 break;
992 }
993 #endif /* __x86 */
994 error(arg);
995 break;
996 case 'X':
997 if (strcmp(arg, "-Xa") == 0 ||
998 strcmp(arg, "-Xt") == 0) {
999 Xamode(ctx->i_ae);
1000 break;
1001 }
1002 if (strcmp(arg, "-Xs") == 0) {
1003 Xsmode(ctx->i_ae);
1004 break;
1005 }
1006 error(arg);
1007 break;
1008 case 'x':
1009 if (arglen == 1)
1010 error(arg);
1011 switch (arg[2]) {
1012 case 'a':
1013 if (strncmp(arg, "-xarch=", 7) == 0) {
1014 mflag |= xlate_xtb(ctx->i_ae, arg + 7);
1015 break;
1016 }
1017 error(arg);
1018 break;
1019 case 'b':
1020 if (strncmp(arg, "-xbuiltin=", 10) == 0) {
1021 if (strcmp(arg + 10, "%all"))
1022 newae(ctx->i_ae, "-fbuiltin");
1023 break;
1024 }
1025 error(arg);
1026 break;
1027 case 'C':
1028 /* Accept C++ style comments -- ignore */
1029 if (strcmp(arg, "-xCC") == 0)
1030 break;
1031 error(arg);
1032 break;
1033 case 'c':
1034 if (strncmp(arg, "-xc99=%all", 10) == 0) {
1035 newae(ctx->i_ae, "-std=gnu99");
1036 break;
1037 }
1038 if (strncmp(arg, "-xc99=%none", 11) == 0) {
1039 newae(ctx->i_ae, "-std=gnu89");
1040 break;
1041 }
1042 if (strncmp(arg, "-xchip=", 7) == 0) {
1043 xlate(ctx->i_ae, arg + 7, xchip_tbl);
1044 break;
1045 }
1046 if (strncmp(arg, "-xcode=", 7) == 0) {
1047 xlate(ctx->i_ae, arg + 7, xcode_tbl);
1048 break;
1049 }
1050 if (strncmp(arg, "-xcrossfile", 11) == 0)
1051 break;
1052 error(arg);
1053 break;
1054 case 'd':
1055 if (strncmp(arg, "-xdebugformat=", 14) == 0)
1056 break;
1057 error(arg);
1058 break;
1059 case 'F':
1060 /*
1061 * Compile for mapfile reordering, or unused
1062 * section elimination, syntax can be -xF or
1063 * more complex, like -xF=%all -- ignore.
1064 */
1065 if (strncmp(arg, "-xF", 3) == 0)
1066 break;
1067 error(arg);
1068 break;
1069 case 'i':
1070 if (strncmp(arg, "-xinline", 8) == 0)
1071 /* No inlining; ignore */
1072 break;
1073 if (strcmp(arg, "-xildon") == 0 ||
1074 strcmp(arg, "-xildoff") == 0)
1075 /* No incremental linking; ignore */
1076 break;
1077 error(arg);
1078 break;
1079 #if defined(__x86)
1080 case 'm':
1081 if (strcmp(arg, "-xmodel=kernel") == 0) {
1082 newae(ctx->i_ae, "-ffreestanding");
1083 newae(ctx->i_ae, "-mno-red-zone");
1084 model = "-mcmodel=kernel";
1085 nolibc = 1;
1086 break;
1087 }
1088 error(arg);
1089 break;
1090 #endif /* __x86 */
1091 case 'O':
1092 if (strncmp(arg, "-xO", 3) == 0) {
1093 size_t len = strlen(arg);
1094 char *s = NULL;
1095 int c = *(arg + 3);
1096 int level;
1097
1098 if (len != 4 || !isdigit(c))
1099 error(arg);
1100
1101 level = atoi(arg + 3);
1102 if (level > 5)
1103 error(arg);
1104 if (level >= 2) {
1105 /*
1106 * For gcc-3.4.x at -O2 we
1107 * need to disable optimizations
1108 * that break ON.
1109 */
1110 optim_disable(ctx->i_ae, level);
1111 /*
1112 * limit -xO3 to -O2 as well.
1113 */
1114 level = 2;
1115 }
1116 if (asprintf(&s, "-O%d", level) == -1)
1117 nomem();
1118 newae(ctx->i_ae, s);
1119 free(s);
1120 break;
1121 }
1122 error(arg);
1123 break;
1124 case 'r':
1125 if (strncmp(arg, "-xregs=", 7) == 0) {
1126 xlate(ctx->i_ae, arg + 7, xregs_tbl);
1127 break;
1128 }
1129 error(arg);
1130 break;
1131 case 's':
1132 if (strcmp(arg, "-xs") == 0 ||
1133 strcmp(arg, "-xspace") == 0 ||
1134 strcmp(arg, "-xstrconst") == 0)
1135 break;
1136 error(arg);
1137 break;
1138 case 't':
1139 if (strncmp(arg, "-xtarget=", 9) == 0) {
1140 xlate(ctx->i_ae, arg + 9, xtarget_tbl);
1141 break;
1142 }
1143 error(arg);
1144 break;
1145 case 'e':
1146 case 'h':
1147 case 'l':
1148 default:
1149 error(arg);
1150 break;
1151 }
1152 break;
1153 case 'Y':
1154 if (arglen == 1) {
1155 if ((arg = *++ctx->i_oldargv) == NULL ||
1156 *arg == '\0')
1157 error("-Y");
1158 ctx->i_oldargc--;
1159 arglen = strlen(arg + 1);
1160 } else {
1161 arg += 2;
1162 }
1163 /* Just ignore -YS,... for now */
1164 if (strncmp(arg, "S,", 2) == 0)
1165 break;
1166 if (strncmp(arg, "l,", 2) == 0) {
1167 char *s = strdup(arg);
1168 s[0] = '-';
1169 s[1] = 'B';
1170 newae(ctx->i_ae, s);
1171 free(s);
1172 break;
1173 }
1174 if (strncmp(arg, "I,", 2) == 0) {
1175 char *s = strdup(arg);
1176 s[0] = '-';
1177 s[1] = 'I';
1178 newae(ctx->i_ae, "-nostdinc");
1179 newae(ctx->i_ae, s);
1180 free(s);
1181 break;
1182 }
1183 error(arg);
1184 break;
1185 case 'Q':
1186 /*
1187 * We could map -Qy into -Wl,-Qy etc.
1188 */
1189 default:
1190 error(arg);
1191 break;
1192 }
1193 }
1194
1195 free(nameflag);
1196
1197 if (c_files > 1 && (ctx->i_flags & CW_F_SHADOW) &&
1198 op != CW_O_PREPROCESS) {
1199 errx(2, "multiple source files are "
1200 "allowed only with -E or -P");
1201 }
1202
1203 /*
1204 * Make sure that we do not have any unintended interactions between
1205 * the xarch options passed in and the version of the Studio compiler
1206 * used.
1207 */
1208 if ((mflag & (SS11|SS12)) == (SS11|SS12)) {
1209 errx(2,
1210 "Conflicting \"-xarch=\" flags (both Studio 11 and 12)\n");
1211 }
1212
1213 switch (mflag) {
1214 case 0:
1215 /* FALLTHROUGH */
1216 case M32:
1217 #if defined(__sparc)
1218 /*
1219 * Only -m32 is defined and so put in the missing xarch
1220 * translation.
1221 */
1222 newae(ctx->i_ae, "-mcpu=v8");
1223 newae(ctx->i_ae, "-mno-v8plus");
1224 #endif
1225 break;
1226 case M64:
1227 #if defined(__sparc)
1228 /*
1229 * Only -m64 is defined and so put in the missing xarch
1230 * translation.
1231 */
1232 newae(ctx->i_ae, "-mcpu=v9");
1233 #endif
1234 break;
1235 case SS12:
1236 #if defined(__sparc)
1237 /* no -m32/-m64 flag used - this is an error for sparc builds */
1238 (void) fprintf(stderr, "No -m32/-m64 flag defined\n");
1239 exit(2);
1240 #endif
1241 break;
1242 case SS11:
1243 /* FALLTHROUGH */
1244 case (SS11|M32):
1245 case (SS11|M64):
1246 break;
1247 case (SS12|M32):
1248 #if defined(__sparc)
1249 /*
1250 * Need to add in further 32 bit options because with SS12
1251 * the xarch=sparcvis option can be applied to 32 or 64
1252 * bit, and so the translatation table (xtbl) cannot handle
1253 * that.
1254 */
1255 newae(ctx->i_ae, "-mv8plus");
1256 #endif
1257 break;
1258 case (SS12|M64):
1259 break;
1260 default:
1261 (void) fprintf(stderr,
1262 "Incompatible -xarch= and/or -m32/-m64 options used.\n");
1263 exit(2);
1264 }
1265
1266 if ((op == CW_O_LINK || op == CW_O_PREPROCESS) &&
1267 (ctx->i_flags & CW_F_SHADOW))
1268 exit(0);
1269
1270 if (model != NULL)
1271 newae(ctx->i_ae, model);
1272 if (!nolibc)
1273 newae(ctx->i_ae, "-lc");
1274 if (!seen_o && (ctx->i_flags & CW_F_SHADOW)) {
1275 newae(ctx->i_ae, "-o");
1276 newae(ctx->i_ae, ctx->i_discard);
1277 }
1278 }
1279
1280 static void
1281 do_cc(cw_ictx_t *ctx)
1282 {
1283 int in_output = 0, seen_o = 0;
1284 cw_op_t op = CW_O_LINK;
1285 char *nameflag;
1286
1287 if (ctx->i_flags & CW_F_PROG) {
1288 newae(ctx->i_ae, "-V");
1289 return;
1290 }
1291
1292 if (asprintf(&nameflag, "-_%s=", ctx->i_compiler->c_name) == -1)
1293 nomem();
1294
1295 while (--ctx->i_oldargc > 0) {
1296 char *arg = *++ctx->i_oldargv;
1297
1298 if (strncmp(arg, "-_CC=", 5) == 0) {
1299 newae(ctx->i_ae, strchr(arg, '=') + 1);
1300 continue;
1301 }
1302
1303 if (*arg != '-') {
1304 if (in_output == 0 || !(ctx->i_flags & CW_F_SHADOW)) {
1305 newae(ctx->i_ae, arg);
1306 } else {
1307 in_output = 0;
1308 newae(ctx->i_ae, ctx->i_discard);
1309 }
1310 continue;
1311 }
1312 switch (*(arg + 1)) {
1313 case '_':
1314 if ((strncmp(arg, nameflag, strlen(nameflag)) == 0) ||
1315 (strncmp(arg, "-_cc=", 5) == 0) ||
1316 (strncmp(arg, "-_sun=", 6) == 0)) {
1317 newae(ctx->i_ae, strchr(arg, '=') + 1);
1318 }
1319 break;
1320
1321 case 'V':
1322 ctx->i_flags &= ~CW_F_ECHO;
1323 newae(ctx->i_ae, arg);
1324 break;
1325 case 'o':
1326 seen_o = 1;
1327 if (strlen(arg) == 2) {
1328 in_output = 1;
1329 newae(ctx->i_ae, arg);
1330 } else if (ctx->i_flags & CW_F_SHADOW) {
1331 newae(ctx->i_ae, "-o");
1332 newae(ctx->i_ae, ctx->i_discard);
1333 } else {
1334 newae(ctx->i_ae, arg);
1335 }
1336 break;
1337 case 'c':
1338 case 'S':
1339 if (strlen(arg) == 2)
1340 op = CW_O_COMPILE;
1341 newae(ctx->i_ae, arg);
1342 break;
1343 case 'E':
1344 case 'P':
1345 if (strlen(arg) == 2)
1346 op = CW_O_PREPROCESS;
1347 /*FALLTHROUGH*/
1348 default:
1349 newae(ctx->i_ae, arg);
1350 }
1351 }
1352
1353 free(nameflag);
1354
1355 if ((op == CW_O_LINK || op == CW_O_PREPROCESS) &&
1356 (ctx->i_flags & CW_F_SHADOW))
1357 exit(0);
1358
1359 if (!seen_o && (ctx->i_flags & CW_F_SHADOW)) {
1360 newae(ctx->i_ae, "-o");
1361 newae(ctx->i_ae, ctx->i_discard);
1362 }
1363 }
1364
1365 static void
1366 prepctx(cw_ictx_t *ctx)
1367 {
1368 newae(ctx->i_ae, ctx->i_compiler->c_path);
1369
1370 if (ctx->i_flags & CW_F_PROG) {
1371 (void) printf("%s: %s\n", (ctx->i_flags & CW_F_SHADOW) ?
1372 "shadow" : "primary", ctx->i_compiler->c_path);
1373 (void) fflush(stdout);
1374 }
1375
1376 if (!(ctx->i_flags & CW_F_XLATE))
1377 return;
1378
1379 switch (ctx->i_compiler->c_style) {
1380 case SUN:
1381 do_cc(ctx);
1382 break;
1383 case GNU:
1384 do_gcc(ctx);
1385 break;
1386 }
1387 }
1388
1389 static int
1390 invoke(cw_ictx_t *ctx)
1391 {
1392 char **newargv;
1393 int ac;
1394 struct ae *a;
1395
1396 if ((newargv = calloc(sizeof (*newargv), ctx->i_ae->ael_argc + 1)) ==
1397 NULL)
1398 nomem();
1399
1400 if (ctx->i_flags & CW_F_ECHO)
1401 (void) fprintf(stderr, "+ ");
1402
1403 for (ac = 0, a = ctx->i_ae->ael_head; a; a = a->ae_next, ac++) {
1404 newargv[ac] = a->ae_arg;
1405 if (ctx->i_flags & CW_F_ECHO)
1406 (void) fprintf(stderr, "%s ", a->ae_arg);
1407 if (a == ctx->i_ae->ael_tail)
1408 break;
1409 }
1410
1411 if (ctx->i_flags & CW_F_ECHO) {
1412 (void) fprintf(stderr, "\n");
1413 (void) fflush(stderr);
1414 }
1415
1416 if (!(ctx->i_flags & CW_F_EXEC))
1417 return (0);
1418
1419 /*
1420 * We must fix up the environment here so that the dependency files are
1421 * not trampled by the shadow compiler. Also take care of GCC
1422 * environment variables that will throw off gcc. This assumes a primary
1423 * gcc.
1424 */
1425 if ((ctx->i_flags & CW_F_SHADOW) &&
1426 (unsetenv("SUNPRO_DEPENDENCIES") != 0 ||
1427 unsetenv("DEPENDENCIES_OUTPUT") != 0 ||
1428 unsetenv("GCC_ROOT") != 0)) {
1429 (void) fprintf(stderr, "error: environment setup failed: %s\n",
1430 strerror(errno));
1431 return (-1);
1432 }
1433
1434 (void) execv(newargv[0], newargv);
1435 warn("couldn't run %s", newargv[0]);
1436
1437 return (-1);
1438 }
1439
1440 static int
1441 reap(cw_ictx_t *ctx)
1442 {
1443 int status, ret = 0;
1444 char buf[1024];
1445 struct stat s;
1446
1447 /*
1448 * Only wait for one specific child.
1449 */
1450 if (ctx->i_pid <= 0)
1451 return (-1);
1452
1453 do {
1454 if (waitpid(ctx->i_pid, &status, 0) < 0) {
1455 warn("cannot reap child");
1456 return (-1);
1457 }
1458 if (status != 0) {
1459 if (WIFSIGNALED(status)) {
1460 ret = -WTERMSIG(status);
1461 break;
1462 } else if (WIFEXITED(status)) {
1463 ret = WEXITSTATUS(status);
1464 break;
1465 }
1466 }
1467 } while (!WIFEXITED(status) && !WIFSIGNALED(status));
1468
1469 (void) unlink(ctx->i_discard);
1470
1471 if (stat(ctx->i_stderr, &s) < 0) {
1472 warn("stat failed on child cleanup");
1473 return (-1);
1474 }
1475 if (s.st_size != 0) {
1476 FILE *f;
1477
1478 if ((f = fopen(ctx->i_stderr, "r")) != NULL) {
1479 while (fgets(buf, sizeof (buf), f))
1480 (void) fprintf(stderr, "%s", buf);
1481 (void) fflush(stderr);
1482 (void) fclose(f);
1483 }
1484 }
1485 (void) unlink(ctx->i_stderr);
1486 free(ctx->i_stderr);
1487
1488 /*
1489 * cc returns an error code when given -V; we want that to succeed.
1490 */
1491 if (ctx->i_flags & CW_F_PROG)
1492 return (0);
1493
1494 return (ret);
1495 }
1496
1497 static int
1498 exec_ctx(cw_ictx_t *ctx, int block)
1499 {
1500 char *file;
1501
1502 /*
1503 * To avoid offending cc's sensibilities, the name of its output
1504 * file must end in '.o'.
1505 */
1506 if ((file = tempnam(NULL, ".cw")) == NULL) {
1507 nomem();
1508 return (-1);
1509 }
1510 (void) strlcpy(ctx->i_discard, file, MAXPATHLEN);
1511 (void) strlcat(ctx->i_discard, ".o", MAXPATHLEN);
1512 free(file);
1513
1514 if ((ctx->i_stderr = tempnam(NULL, ".cw")) == NULL) {
1515 nomem();
1516 return (-1);
1517 }
1518
1519 if ((ctx->i_pid = fork()) == 0) {
1520 int fd;
1521
1522 (void) fclose(stderr);
1523 if ((fd = open(ctx->i_stderr, O_WRONLY | O_CREAT | O_EXCL,
1524 0666)) < 0) {
1525 err(1, "open failed for standard error");
1526 }
1527 if (dup2(fd, 2) < 0) {
1528 err(1, "dup2 failed for standard error");
1529 }
1530 if (fd != 2)
1531 (void) close(fd);
1532 if (freopen("/dev/fd/2", "w", stderr) == NULL) {
1533 err(1, "freopen failed for /dev/fd/2");
1534 }
1535
1536 prepctx(ctx);
1537 exit(invoke(ctx));
1538 }
1539
1540 if (ctx->i_pid < 0) {
1541 err(1, "fork failed");
1542 }
1543
1544 if (block)
1545 return (reap(ctx));
1546
1547 return (0);
1548 }
1549
1550 static void
1551 parse_compiler(const char *spec, cw_compiler_t *compiler)
1552 {
1553 char *tspec, *token;
1554
1555 if ((tspec = strdup(spec)) == NULL)
1556 nomem();
1557
1558 if ((token = strsep(&tspec, ",")) == NULL)
1559 errx(1, "Compiler is missing a name: %s", spec);
1560 compiler->c_name = token;
1561
1562 if ((token = strsep(&tspec, ",")) == NULL)
1563 errx(1, "Compiler is missing a path: %s", spec);
1564 compiler->c_path = token;
1565
1566 if ((token = strsep(&tspec, ",")) == NULL)
1567 errx(1, "Compiler is missing a style: %s", spec);
1568
1569 if ((strcasecmp(token, "gnu") == 0) ||
1570 (strcasecmp(token, "gcc") == 0))
1571 compiler->c_style = GNU;
1572 else if ((strcasecmp(token, "sun") == 0) ||
1573 (strcasecmp(token, "cc") == 0))
1574 compiler->c_style = SUN;
1575 else
1576 errx(1, "unknown compiler style: %s", token);
1577
1578 if (tspec != NULL)
1579 errx(1, "Excess tokens in compiler: %s", spec);
1580 }
1581
1582 int
1583 main(int argc, char **argv)
1584 {
1585 int ch;
1586 cw_compiler_t primary = { NULL, NULL, 0 };
1587 cw_compiler_t shadows[10];
1588 int nshadows = 0;
1589 int ret = 0;
1590 boolean_t do_serial = B_FALSE;
1591 boolean_t do_exec = B_FALSE;
1592 boolean_t vflg = B_FALSE;
1593 boolean_t Cflg = B_FALSE;
1594 boolean_t cflg = B_FALSE;
1595 boolean_t nflg = B_FALSE;
1596
1597 cw_ictx_t *main_ctx;
1598
1599 static struct option longopts[] = {
1600 { "compiler", no_argument, NULL, 'c' },
1601 { "noecho", no_argument, NULL, 'n' },
1602 { "primary", required_argument, NULL, 'p' },
1603 { "shadow", required_argument, NULL, 's' },
1604 { "versions", no_argument, NULL, 'v' },
1605 { NULL, 0, NULL, 0 },
1606 };
1607
1608
1609 if ((main_ctx = newictx()) == NULL)
1610 nomem();
1611
1612 while ((ch = getopt_long(argc, argv, "C", longopts, NULL)) != -1) {
1613 switch (ch) {
1614 case 'c':
1615 cflg = B_TRUE;
1616 break;
1617 case 'C':
1618 Cflg = B_TRUE;
1619 break;
1620 case 'n':
1621 nflg = B_TRUE;
1622 break;
1623 case 'p':
1624 if (primary.c_path != NULL) {
1625 warnx("Only one primary compiler may "
1626 "be specified");
1627 usage();
1628 }
1629
1630 parse_compiler(optarg, &primary);
1631 break;
1632 case 's':
1633 if (nshadows >= 10)
1634 errx(1, "May only use 10 shadows at "
1635 "the moment");
1636 parse_compiler(optarg, &shadows[nshadows]);
1637 nshadows++;
1638 break;
1639 case 'v':
1640 vflg = B_TRUE;
1641 break;
1642 default:
1643 (void) fprintf(stderr, "Did you forget '--'?\n");
1644 usage();
1645 }
1646 }
1647
1648 if (primary.c_path == NULL) {
1649 warnx("A primary compiler must be specified");
1650 usage();
1651 }
1652
1653 do_serial = (getenv("CW_SHADOW_SERIAL") == NULL) ? B_FALSE : B_TRUE;
1654 do_exec = (getenv("CW_NO_EXEC") == NULL) ? B_TRUE : B_FALSE;
1655
1656 /* Leave room for argv[0] */
1657 argc -= (optind - 1);
1658 argv += (optind - 1);
1659
1660 main_ctx->i_oldargc = argc;
1661 main_ctx->i_oldargv = argv;
1662 main_ctx->i_flags = CW_F_XLATE;
1663 if (nflg == 0)
1664 main_ctx->i_flags |= CW_F_ECHO;
1665 if (do_exec)
1666 main_ctx->i_flags |= CW_F_EXEC;
1667 if (Cflg)
1668 main_ctx->i_flags |= CW_F_CXX;
1669 main_ctx->i_compiler = &primary;
1670
1671 if (cflg) {
1672 (void) fputs(primary.c_path, stdout);
1673 }
1674
1675 if (vflg) {
1676 (void) printf("cw version %s\n", CW_VERSION);
1677 (void) fflush(stdout);
1678 main_ctx->i_flags &= ~CW_F_ECHO;
1679 main_ctx->i_flags |= CW_F_PROG | CW_F_EXEC;
1680 do_serial = 1;
1681 }
1682
1683 ret |= exec_ctx(main_ctx, do_serial);
1684
1685 for (int i = 0; i < nshadows; i++) {
1686 int r;
1687 cw_ictx_t *shadow_ctx;
1688
1689 if ((shadow_ctx = newictx()) == NULL)
1690 nomem();
1691
1692 memcpy(shadow_ctx, main_ctx, sizeof (cw_ictx_t));
1693
1694 shadow_ctx->i_flags |= CW_F_SHADOW;
1695 shadow_ctx->i_compiler = &shadows[i];
1696
1697 r = exec_ctx(shadow_ctx, do_serial);
1698 if (r == 0) {
1699 shadow_ctx->i_next = main_ctx->i_next;
1700 main_ctx->i_next = shadow_ctx;
1701 }
1702 ret |= r;
1703 }
1704
1705 if (!do_serial) {
1706 cw_ictx_t *next = main_ctx;
1707 while (next != NULL) {
1708 cw_ictx_t *toreap = next;
1709 next = next->i_next;
1710 ret |= reap(toreap);
1711 }
1712 }
1713
1714 return (ret);
1715 }