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