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