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 #include <dirent.h>
264
265 #include <sys/param.h>
266 #include <sys/stat.h>
267 #include <sys/types.h>
268 #include <sys/utsname.h>
269 #include <sys/wait.h>
270
271 #define CW_F_CXX 0x01
272 #define CW_F_SHADOW 0x02
273 #define CW_F_EXEC 0x04
274 #define CW_F_ECHO 0x08
275 #define CW_F_XLATE 0x10
276 #define CW_F_PROG 0x20
277
278 typedef enum cw_op {
279 CW_O_NONE = 0,
280 CW_O_PREPROCESS,
281 CW_O_COMPILE,
282 CW_O_LINK
283 } cw_op_t;
284
285 struct aelist {
286 struct ae {
287 struct ae *ae_next;
288 char *ae_arg;
289 } *ael_head, *ael_tail;
290 int ael_argc;
291 };
292
293 typedef enum {
294 GNU,
295 SUN
296 } compiler_style_t;
297
298 typedef struct {
299 char *c_name;
300 char *c_path;
301 compiler_style_t c_style;
302 } cw_compiler_t;
303
304 typedef struct cw_ictx {
305 struct cw_ictx *i_next;
306 cw_compiler_t *i_compiler;
307 struct aelist *i_ae;
308 uint32_t i_flags;
309 int i_oldargc;
310 char **i_oldargv;
311 pid_t i_pid;
312 char *i_tmpdir;
313 char *i_stderr;
314 } cw_ictx_t;
315
316 /*
317 * Status values to indicate which Studio compiler and associated
318 * flags are being used.
319 */
320 #define M32 0x01 /* -m32 - only on Studio 12 */
321 #define M64 0x02 /* -m64 - only on Studio 12 */
322 #define SS11 0x100 /* Studio 11 */
323 #define SS12 0x200 /* Studio 12 */
324
325 #define TRANS_ENTRY 5
326 /*
327 * Translation table definition for the -xarch= flag. The "x_arg"
328 * value is translated into the appropriate gcc flags according
329 * to the values in x_trans[n]. The x_flags indicates what compiler
330 * is being used and what flags have been set via the use of
331 * "x_arg".
332 */
333 typedef struct xarch_table {
334 char *x_arg;
335 int x_flags;
336 char *x_trans[TRANS_ENTRY];
337 } xarch_table_t;
338
339 /*
340 * The translation table for the -xarch= flag used in the Studio compilers.
341 */
342 static const xarch_table_t xtbl[] = {
343 #if defined(__x86)
344 { "generic", SS11, {NULL} },
345 { "generic64", (SS11|M64), { "-m64", "-mtune=opteron" } },
346 { "amd64", (SS11|M64), { "-m64", "-mtune=opteron" } },
347 { "386", SS11, { "-march=i386" } },
348 { "pentium_pro", SS11, { "-march=pentiumpro" } },
349 { "sse", SS11, { "-msse", "-mfpmath=sse" } },
350 { "sse2", SS11, { "-msse2", "-mfpmath=sse" } },
351 #elif defined(__sparc)
352 { "generic", (SS11|M32), { "-m32", "-mcpu=v8" } },
353 { "generic64", (SS11|M64), { "-m64", "-mcpu=v9" } },
354 { "v8", (SS11|M32), { "-m32", "-mcpu=v8", "-mno-v8plus" } },
355 { "v8plus", (SS11|M32), { "-m32", "-mcpu=v9", "-mv8plus" } },
356 { "v8plusa", (SS11|M32), { "-m32", "-mcpu=ultrasparc", "-mv8plus",
357 "-mvis" } },
358 { "v8plusb", (SS11|M32), { "-m32", "-mcpu=ultrasparc3", "-mv8plus",
359 "-mvis" } },
360 { "v9", (SS11|M64), { "-m64", "-mcpu=v9" } },
361 { "v9a", (SS11|M64), { "-m64", "-mcpu=ultrasparc", "-mvis" } },
362 { "v9b", (SS11|M64), { "-m64", "-mcpu=ultrasparc3", "-mvis" } },
363 { "sparc", SS12, { "-mcpu=v9", "-mv8plus" } },
364 { "sparcvis", SS12, { "-mcpu=ultrasparc", "-mvis" } },
365 { "sparcvis2", SS12, { "-mcpu=ultrasparc3", "-mvis" } }
366 #endif
367 };
368
369 static int xtbl_size = sizeof (xtbl) / sizeof (xarch_table_t);
370
371 static const char *xchip_tbl[] = {
372 #if defined(__x86)
373 "386", "-mtune=i386", NULL,
374 "486", "-mtune=i486", NULL,
375 "pentium", "-mtune=pentium", NULL,
376 "pentium_pro", "-mtune=pentiumpro", NULL,
377 #elif defined(__sparc)
378 "super", "-mtune=supersparc", NULL,
379 "ultra", "-mtune=ultrasparc", NULL,
380 "ultra3", "-mtune=ultrasparc3", NULL,
381 #endif
382 NULL, NULL
383 };
384
385 static const char *xcode_tbl[] = {
386 #if defined(__sparc)
387 "abs32", "-fno-pic", "-mcmodel=medlow", NULL,
388 "abs44", "-fno-pic", "-mcmodel=medmid", NULL,
389 "abs64", "-fno-pic", "-mcmodel=medany", NULL,
390 "pic13", "-fpic", NULL,
391 "pic32", "-fPIC", NULL,
392 #endif
393 NULL, NULL
394 };
395
396 static const char *xtarget_tbl[] = {
397 #if defined(__x86)
398 "pentium_pro", "-march=pentiumpro", NULL,
399 #endif /* __x86 */
400 NULL, NULL
401 };
402
403 static const char *xregs_tbl[] = {
404 #if defined(__sparc)
405 "appl", "-mapp-regs", NULL,
406 "no%appl", "-mno-app-regs", NULL,
407 "float", "-mfpu", NULL,
408 "no%float", "-mno-fpu", NULL,
409 #endif /* __sparc */
410 NULL, NULL
411 };
412
413 static void
414 nomem(void)
415 {
416 errx(1, "out of memory");
417 }
418
419 static void
420 newae(struct aelist *ael, const char *arg)
421 {
422 struct ae *ae;
423
424 if ((ae = calloc(sizeof (*ae), 1)) == NULL)
425 nomem();
426 ae->ae_arg = strdup(arg);
427 if (ael->ael_tail == NULL)
428 ael->ael_head = ae;
429 else
430 ael->ael_tail->ae_next = ae;
431 ael->ael_tail = ae;
432 ael->ael_argc++;
433 }
434
435 static cw_ictx_t *
436 newictx(void)
437 {
438 cw_ictx_t *ctx = calloc(sizeof (cw_ictx_t), 1);
439 if (ctx)
440 if ((ctx->i_ae = calloc(sizeof (struct aelist), 1)) == NULL) {
441 free(ctx);
442 return (NULL);
443 }
444
445 return (ctx);
446 }
447
448 static void
449 error(const char *arg)
450 {
451 errx(2, "error: mapping failed at or near arg '%s'", arg);
452 }
453
454 /*
455 * Add the current favourite set of warnings to the gcc invocation.
456 */
457 static void
458 warnings(struct aelist *h)
459 {
460 static int warningsonce;
461
462 if (warningsonce++)
463 return;
464
465 /*
466 * Enable as many warnings as exist, then disable those that we never
467 * ever want.
468 */
469 newae(h, "-Wall");
470 newae(h, "-Wextra");
471 }
472
473 static void
474 optim_disable(struct aelist *h, int level)
475 {
476 if (level >= 2) {
477 newae(h, "-fno-strict-aliasing");
478 newae(h, "-fno-unit-at-a-time");
479 newae(h, "-fno-optimize-sibling-calls");
480 }
481 }
482
483 static void
484 Xsmode(struct aelist *h)
485 {
486 static int xsonce;
487
488 if (xsonce++)
489 return;
490
491 newae(h, "-traditional");
492 newae(h, "-traditional-cpp");
493 }
494
495 static void
496 usage()
497 {
498 extern char *__progname;
499 (void) fprintf(stderr,
500 "usage: %s [-C] [--versions] --primary <compiler> "
501 "[--shadow <compiler>]... -- cflags...\n",
502 __progname);
503 (void) fprintf(stderr, "compilers take the form: name,path,style\n"
504 " - name: a unique name usable in flag specifiers\n"
505 " - path: path to the compiler binary\n"
506 " - style: the style of flags expected: either sun or gnu\n");
507 exit(2);
508 }
509
510 static int
511 xlate_xtb(struct aelist *h, const char *xarg)
512 {
513 int i, j;
514
515 for (i = 0; i < xtbl_size; i++) {
516 if (strcmp(xtbl[i].x_arg, xarg) == 0)
517 break;
518 }
519
520 /*
521 * At the end of the table and so no matching "arg" entry
522 * found and so this must be a bad -xarch= flag.
523 */
524 if (i == xtbl_size)
525 error(xarg);
526
527 for (j = 0; j < TRANS_ENTRY; j++) {
528 if (xtbl[i].x_trans[j] != NULL)
529 newae(h, xtbl[i].x_trans[j]);
530 else
531 break;
532 }
533 return (xtbl[i].x_flags);
534
535 }
536
537 static void
538 xlate(struct aelist *h, const char *xarg, const char **table)
539 {
540 while (*table != NULL && strcmp(xarg, *table) != 0) {
541 while (*table != NULL)
542 table++;
543 table++;
544 }
545
546 if (*table == NULL)
547 error(xarg);
548
549 table++;
550
551 while (*table != NULL) {
552 newae(h, *table);
553 table++;
554 }
555 }
556
557 /*
558 * The compiler wants the output file to end in appropriate extension. If
559 * we're generating a name from whole cloth (path == NULL), we assume that
560 * extension to be .o, otherwise we match the extension of the caller.
561 */
562 static char *
563 discard_file_name(cw_ictx_t *ctx, const char *path)
564 {
565 char *ret, *ext;
566 char tmpl[] = "cwXXXXXX";
567
568 if (path == NULL) {
569 ext = ".o";
570 } else {
571 ext = strrchr(path, '.');
572 }
573
574 /*
575 * We need absolute control over where the temporary file goes, since
576 * we rely on it for cleanup so tempnam(3C) and tmpnam(3C) are
577 * inappropriate (they use TMPDIR, preferentially).
578 *
579 * mkstemp(3C) doesn't actually help us, since the temporary file
580 * isn't used by us, only its name.
581 */
582 if (mktemp(tmpl) == NULL)
583 nomem();
584
585 (void) asprintf(&ret, "%s/%s%s", ctx->i_tmpdir, tmpl,
586 (ext != NULL) ? ext : "");
587
588 if (ret == NULL)
589 nomem();
590
591 return (ret);
592 }
593
594 static void
595 do_gcc(cw_ictx_t *ctx)
596 {
597 int c;
598 int nolibc = 0;
599 int in_output = 0, seen_o = 0, c_files = 0;
600 cw_op_t op = CW_O_LINK;
601 char *model = NULL;
602 char *nameflag;
603 int mflag = 0;
604
605 if (ctx->i_flags & CW_F_PROG) {
606 newae(ctx->i_ae, "--version");
607 return;
608 }
609
610 newae(ctx->i_ae, "-fident");
611 newae(ctx->i_ae, "-finline");
612 newae(ctx->i_ae, "-fno-inline-functions");
613 newae(ctx->i_ae, "-fno-builtin");
614 newae(ctx->i_ae, "-fno-asm");
615 newae(ctx->i_ae, "-fdiagnostics-show-option");
616 newae(ctx->i_ae, "-nodefaultlibs");
617
618 #if defined(__sparc)
619 /*
620 * The SPARC ldd and std instructions require 8-byte alignment of
621 * their address operand. gcc correctly uses them only when the
622 * ABI requires 8-byte alignment; unfortunately we have a number of
623 * pieces of buggy code that doesn't conform to the ABI. This
624 * flag makes gcc work more like Studio with -xmemalign=4.
625 */
626 newae(ctx->i_ae, "-mno-integer-ldd-std");
627 #endif
628
629 /*
630 * This is needed because 'u' is defined
631 * under a conditional on 'sun'. Should
632 * probably just remove the conditional,
633 * or make it be dependent on '__sun'.
634 *
635 * -Dunix is also missing in enhanced ANSI mode
636 */
637 newae(ctx->i_ae, "-D__sun");
638
639 if (asprintf(&nameflag, "-_%s=", ctx->i_compiler->c_name) == -1)
640 nomem();
641
642 /*
643 * Walk the argument list, translating as we go ..
644 */
645 while (--ctx->i_oldargc > 0) {
646 char *arg = *++ctx->i_oldargv;
647 size_t arglen = strlen(arg);
648
649 if (*arg == '-') {
650 arglen--;
651 } else {
652 /*
653 * Discard inline files that gcc doesn't grok
654 */
655 if (!in_output && arglen > 3 &&
656 strcmp(arg + arglen - 3, ".il") == 0)
657 continue;
658
659 if (!in_output && arglen > 2 &&
660 arg[arglen - 2] == '.' &&
661 (arg[arglen - 1] == 'S' || arg[arglen - 1] == 's' ||
662 arg[arglen - 1] == 'c' || arg[arglen - 1] == 'i'))
663 c_files++;
664
665 /*
666 * Otherwise, filenames and partial arguments
667 * are passed through for gcc to chew on. However,
668 * output is always discarded for the secondary
669 * compiler.
670 */
671 if ((ctx->i_flags & CW_F_SHADOW) && in_output) {
672 newae(ctx->i_ae, discard_file_name(ctx, arg));
673 } else {
674 newae(ctx->i_ae, arg);
675 }
676 in_output = 0;
677 continue;
678 }
679
680 if (ctx->i_flags & CW_F_CXX) {
681 if (strncmp(arg, "-_g++=", 6) == 0) {
682 newae(ctx->i_ae, strchr(arg, '=') + 1);
683 continue;
684 }
685 if (strncmp(arg, "-compat=", 8) == 0) {
686 /* discard -compat=4 and -compat=5 */
687 continue;
688 }
689 if (strcmp(arg, "-Qoption") == 0) {
690 /* discard -Qoption and its two arguments */
691 if (ctx->i_oldargc < 3)
692 error(arg);
693 ctx->i_oldargc -= 2;
694 ctx->i_oldargv += 2;
695 continue;
696 }
697 if (strcmp(arg, "-xwe") == 0) {
698 /* turn warnings into errors */
699 newae(ctx->i_ae, "-Werror");
700 continue;
701 }
702 if (strcmp(arg, "-norunpath") == 0) {
703 /* gcc has no corresponding option */
704 continue;
705 }
706 if (strcmp(arg, "-nolib") == 0) {
707 /* -nodefaultlibs is on by default */
708 nolibc = 1;
709 continue;
710 }
711 #if defined(__sparc)
712 if (strcmp(arg, "-cg92") == 0) {
713 mflag |= xlate_xtb(ctx->i_ae, "v8");
714 xlate(ctx->i_ae, "super", xchip_tbl);
715 continue;
716 }
717 #endif /* __sparc */
718 }
719
720 switch ((c = arg[1])) {
721 case '_':
722 if ((strncmp(arg, nameflag, strlen(nameflag)) == 0) ||
723 (strncmp(arg, "-_gcc=", 6) == 0) ||
724 (strncmp(arg, "-_gnu=", 6) == 0)) {
725 newae(ctx->i_ae, strchr(arg, '=') + 1);
726 }
727 break;
728 case '#':
729 if (arglen == 1) {
730 newae(ctx->i_ae, "-v");
731 break;
732 }
733 error(arg);
734 break;
735 case 'f':
736 if ((strcmp(arg, "-fpic") == 0) ||
737 (strcmp(arg, "-fPIC") == 0)) {
738 newae(ctx->i_ae, arg);
739 break;
740 }
741 error(arg);
742 break;
743 case 'g':
744 newae(ctx->i_ae, "-gdwarf-2");
745 break;
746 case 'E':
747 if (arglen == 1) {
748 newae(ctx->i_ae, "-xc");
749 newae(ctx->i_ae, arg);
750 op = CW_O_PREPROCESS;
751 nolibc = 1;
752 break;
753 }
754 error(arg);
755 break;
756 case 'c':
757 case 'S':
758 if (arglen == 1) {
759 op = CW_O_COMPILE;
760 nolibc = 1;
761 }
762 /* FALLTHROUGH */
763 case 'C':
764 case 'H':
765 case 'p':
766 if (arglen == 1) {
767 newae(ctx->i_ae, arg);
768 break;
769 }
770 error(arg);
771 break;
772 case 'A':
773 case 'h':
774 case 'I':
775 case 'i':
776 case 'L':
777 case 'l':
778 case 'R':
779 case 'U':
780 case 'u':
781 case 'w':
782 newae(ctx->i_ae, arg);
783 break;
784 case 'o':
785 seen_o = 1;
786 if (arglen == 1) {
787 in_output = 1;
788 newae(ctx->i_ae, arg);
789 } else if (ctx->i_flags & CW_F_SHADOW) {
790 newae(ctx->i_ae, "-o");
791 newae(ctx->i_ae, discard_file_name(ctx, arg));
792 } else {
793 newae(ctx->i_ae, arg);
794 }
795 break;
796 case 'D':
797 newae(ctx->i_ae, arg);
798 /*
799 * XXX Clearly a hack ... do we need _KADB too?
800 */
801 if (strcmp(arg, "-D_KERNEL") == 0 ||
802 strcmp(arg, "-D_BOOT") == 0)
803 newae(ctx->i_ae, "-ffreestanding");
804 break;
805 case 'd':
806 if (arglen == 2) {
807 if (strcmp(arg, "-dy") == 0) {
808 newae(ctx->i_ae, "-Wl,-dy");
809 break;
810 }
811 if (strcmp(arg, "-dn") == 0) {
812 newae(ctx->i_ae, "-Wl,-dn");
813 break;
814 }
815 }
816 if (strcmp(arg, "-dalign") == 0) {
817 /*
818 * -dalign forces alignment in some cases;
819 * gcc does not need any flag to do this.
820 */
821 break;
822 }
823 error(arg);
824 break;
825 case 'e':
826 if (strcmp(arg,
827 "-erroff=E_EMPTY_TRANSLATION_UNIT") == 0) {
828 /*
829 * Accept but ignore this -- gcc doesn't
830 * seem to complain about empty translation
831 * units
832 */
833 break;
834 }
835 /* XX64 -- ignore all -erroff= options, for now */
836 if (strncmp(arg, "-erroff=", 8) == 0)
837 break;
838 if (strcmp(arg, "-errtags=yes") == 0) {
839 warnings(ctx->i_ae);
840 break;
841 }
842 if (strcmp(arg, "-errwarn=%all") == 0) {
843 newae(ctx->i_ae, "-Werror");
844 break;
845 }
846 error(arg);
847 break;
848 case 'G':
849 newae(ctx->i_ae, "-shared");
850 nolibc = 1;
851 break;
852 case 'k':
853 if (strcmp(arg, "-keeptmp") == 0) {
854 newae(ctx->i_ae, "-save-temps");
855 break;
856 }
857 error(arg);
858 break;
859 case 'm':
860 if (strcmp(arg, "-mt") == 0) {
861 newae(ctx->i_ae, "-D_REENTRANT");
862 break;
863 }
864 if (strcmp(arg, "-m64") == 0) {
865 newae(ctx->i_ae, "-m64");
866 #if defined(__x86)
867 newae(ctx->i_ae, "-mtune=opteron");
868 #endif
869 mflag |= M64;
870 break;
871 }
872 if (strcmp(arg, "-m32") == 0) {
873 newae(ctx->i_ae, "-m32");
874 mflag |= M32;
875 break;
876 }
877 error(arg);
878 break;
879 case 'B': /* linker options */
880 case 'M':
881 case 'z':
882 {
883 char *opt;
884 size_t len;
885 char *s;
886
887 if (arglen == 1) {
888 opt = *++ctx->i_oldargv;
889 if (opt == NULL || *opt == '\0')
890 error(arg);
891 ctx->i_oldargc--;
892 } else {
893 opt = arg + 2;
894 }
895 len = strlen(opt) + 7;
896 if ((s = malloc(len)) == NULL)
897 nomem();
898 (void) snprintf(s, len, "-Wl,-%c%s", c, opt);
899 newae(ctx->i_ae, s);
900 free(s);
901 }
902 break;
903 case 'O':
904 if (arglen == 1) {
905 newae(ctx->i_ae, "-O");
906 break;
907 }
908 error(arg);
909 break;
910 case 'P':
911 /*
912 * We could do '-E -o filename.i', but that's hard,
913 * and we don't need it for the case that's triggering
914 * this addition. We'll require the user to specify
915 * -o in the Makefile. If they don't they'll find out
916 * in a hurry.
917 */
918 newae(ctx->i_ae, "-E");
919 op = CW_O_PREPROCESS;
920 nolibc = 1;
921 break;
922 case 's':
923 if (arglen == 1) {
924 newae(ctx->i_ae, "-Wl,-s");
925 break;
926 }
927 error(arg);
928 break;
929 case 't':
930 if (arglen == 1) {
931 newae(ctx->i_ae, "-Wl,-t");
932 break;
933 }
934 error(arg);
935 break;
936 case 'V':
937 if (arglen == 1) {
938 ctx->i_flags &= ~CW_F_ECHO;
939 newae(ctx->i_ae, "--version");
940 break;
941 }
942 error(arg);
943 break;
944 case 'v':
945 if (arglen == 1) {
946 warnings(ctx->i_ae);
947 break;
948 }
949 error(arg);
950 break;
951 case 'W':
952 if (strncmp(arg, "-Wp,-xc99", 9) == 0) {
953 /*
954 * gcc's preprocessor will accept c99
955 * regardless, so accept and ignore.
956 */
957 break;
958 }
959 if (strncmp(arg, "-Wa,", 4) == 0 ||
960 strncmp(arg, "-Wp,", 4) == 0 ||
961 strncmp(arg, "-Wl,", 4) == 0) {
962 newae(ctx->i_ae, arg);
963 break;
964 }
965 if (strcmp(arg, "-W0,-noglobal") == 0 ||
966 strcmp(arg, "-W0,-xglobalstatic") == 0) {
967 /*
968 * gcc doesn't prefix local symbols
969 * in debug mode, so this is not needed.
970 */
971 break;
972 }
973 if (strcmp(arg, "-W0,-Lt") == 0) {
974 /*
975 * Generate tests at the top of loops.
976 * There is no direct gcc equivalent, ignore.
977 */
978 break;
979 }
980 if (strcmp(arg, "-W0,-xdbggen=no%usedonly") == 0) {
981 newae(ctx->i_ae,
982 "-fno-eliminate-unused-debug-symbols");
983 newae(ctx->i_ae,
984 "-fno-eliminate-unused-debug-types");
985 break;
986 }
987 if (strcmp(arg, "-W2,-xwrap_int") == 0) {
988 /*
989 * Use the legacy behaviour (pre-SS11)
990 * for integer wrapping.
991 * gcc does not need this.
992 */
993 break;
994 }
995 if (strcmp(arg, "-Wd,-xsafe=unboundsym") == 0) {
996 /*
997 * Prevents optimizing away checks for
998 * unbound weak symbol addresses. gcc does
999 * not do this, so it's not needed.
1000 */
1001 break;
1002 }
1003 if (strncmp(arg, "-Wc,-xcode=", 11) == 0) {
1004 xlate(ctx->i_ae, arg + 11, xcode_tbl);
1005 break;
1006 }
1007 if (strncmp(arg, "-Wc,-Qiselect", 13) == 0) {
1008 /*
1009 * Prevents insertion of register symbols.
1010 * gcc doesn't do this, so ignore it.
1011 */
1012 break;
1013 }
1014 if (strcmp(arg, "-Wc,-Qassembler-ounrefsym=0") == 0) {
1015 /*
1016 * Prevents optimizing away of static variables.
1017 * gcc does not do this, so it's not needed.
1018 */
1019 break;
1020 }
1021 #if defined(__x86)
1022 if (strcmp(arg, "-Wu,-save_args") == 0) {
1023 newae(ctx->i_ae, "-msave-args");
1024 break;
1025 }
1026 #endif /* __x86 */
1027 error(arg);
1028 break;
1029 case 'X':
1030 if (strcmp(arg, "-Xa") == 0 ||
1031 strcmp(arg, "-Xt") == 0) {
1032 break;
1033 }
1034 if (strcmp(arg, "-Xs") == 0) {
1035 Xsmode(ctx->i_ae);
1036 break;
1037 }
1038 error(arg);
1039 break;
1040 case 'x':
1041 if (arglen == 1)
1042 error(arg);
1043 switch (arg[2]) {
1044 case 'a':
1045 if (strncmp(arg, "-xarch=", 7) == 0) {
1046 mflag |= xlate_xtb(ctx->i_ae, arg + 7);
1047 break;
1048 }
1049 error(arg);
1050 break;
1051 case 'b':
1052 if (strncmp(arg, "-xbuiltin=", 10) == 0) {
1053 if (strcmp(arg + 10, "%all"))
1054 newae(ctx->i_ae, "-fbuiltin");
1055 break;
1056 }
1057 error(arg);
1058 break;
1059 case 'C':
1060 /* Accept C++ style comments -- ignore */
1061 if (strcmp(arg, "-xCC") == 0)
1062 break;
1063 error(arg);
1064 break;
1065 case 'c':
1066 if (strncmp(arg, "-xc99=%all", 10) == 0) {
1067 newae(ctx->i_ae, "-std=gnu99");
1068 break;
1069 }
1070 if (strncmp(arg, "-xc99=%none", 11) == 0) {
1071 newae(ctx->i_ae, "-std=gnu89");
1072 break;
1073 }
1074 if (strncmp(arg, "-xchip=", 7) == 0) {
1075 xlate(ctx->i_ae, arg + 7, xchip_tbl);
1076 break;
1077 }
1078 if (strncmp(arg, "-xcode=", 7) == 0) {
1079 xlate(ctx->i_ae, arg + 7, xcode_tbl);
1080 break;
1081 }
1082 if (strncmp(arg, "-xcrossfile", 11) == 0)
1083 break;
1084 error(arg);
1085 break;
1086 case 'd':
1087 if (strncmp(arg, "-xdebugformat=", 14) == 0)
1088 break;
1089 error(arg);
1090 break;
1091 case 'F':
1092 /*
1093 * Compile for mapfile reordering, or unused
1094 * section elimination, syntax can be -xF or
1095 * more complex, like -xF=%all -- ignore.
1096 */
1097 if (strncmp(arg, "-xF", 3) == 0)
1098 break;
1099 error(arg);
1100 break;
1101 case 'i':
1102 if (strncmp(arg, "-xinline", 8) == 0)
1103 /* No inlining; ignore */
1104 break;
1105 if (strcmp(arg, "-xildon") == 0 ||
1106 strcmp(arg, "-xildoff") == 0)
1107 /* No incremental linking; ignore */
1108 break;
1109 error(arg);
1110 break;
1111 #if defined(__x86)
1112 case 'm':
1113 if (strcmp(arg, "-xmodel=kernel") == 0) {
1114 newae(ctx->i_ae, "-ffreestanding");
1115 newae(ctx->i_ae, "-mno-red-zone");
1116 model = "-mcmodel=kernel";
1117 nolibc = 1;
1118 break;
1119 }
1120 error(arg);
1121 break;
1122 #endif /* __x86 */
1123 case 'O':
1124 if (strncmp(arg, "-xO", 3) == 0) {
1125 size_t len = strlen(arg);
1126 char *s = NULL;
1127 int c = *(arg + 3);
1128 int level;
1129
1130 if (len != 4 || !isdigit(c))
1131 error(arg);
1132
1133 level = atoi(arg + 3);
1134 if (level > 5)
1135 error(arg);
1136 if (level >= 2) {
1137 /*
1138 * For gcc-3.4.x at -O2 we
1139 * need to disable optimizations
1140 * that break ON.
1141 */
1142 optim_disable(ctx->i_ae, level);
1143 /*
1144 * limit -xO3 to -O2 as well.
1145 */
1146 level = 2;
1147 }
1148 if (asprintf(&s, "-O%d", level) == -1)
1149 nomem();
1150 newae(ctx->i_ae, s);
1151 free(s);
1152 break;
1153 }
1154 error(arg);
1155 break;
1156 case 'r':
1157 if (strncmp(arg, "-xregs=", 7) == 0) {
1158 xlate(ctx->i_ae, arg + 7, xregs_tbl);
1159 break;
1160 }
1161 error(arg);
1162 break;
1163 case 's':
1164 if (strcmp(arg, "-xs") == 0 ||
1165 strcmp(arg, "-xspace") == 0 ||
1166 strcmp(arg, "-xstrconst") == 0)
1167 break;
1168 error(arg);
1169 break;
1170 case 't':
1171 if (strncmp(arg, "-xtarget=", 9) == 0) {
1172 xlate(ctx->i_ae, arg + 9, xtarget_tbl);
1173 break;
1174 }
1175 error(arg);
1176 break;
1177 case 'e':
1178 case 'h':
1179 case 'l':
1180 default:
1181 error(arg);
1182 break;
1183 }
1184 break;
1185 case 'Y':
1186 if (arglen == 1) {
1187 if ((arg = *++ctx->i_oldargv) == NULL ||
1188 *arg == '\0')
1189 error("-Y");
1190 ctx->i_oldargc--;
1191 arglen = strlen(arg + 1);
1192 } else {
1193 arg += 2;
1194 }
1195 /* Just ignore -YS,... for now */
1196 if (strncmp(arg, "S,", 2) == 0)
1197 break;
1198 if (strncmp(arg, "l,", 2) == 0) {
1199 char *s = strdup(arg);
1200 s[0] = '-';
1201 s[1] = 'B';
1202 newae(ctx->i_ae, s);
1203 free(s);
1204 break;
1205 }
1206 if (strncmp(arg, "I,", 2) == 0) {
1207 char *s = strdup(arg);
1208 s[0] = '-';
1209 s[1] = 'I';
1210 newae(ctx->i_ae, "-nostdinc");
1211 newae(ctx->i_ae, s);
1212 free(s);
1213 break;
1214 }
1215 error(arg);
1216 break;
1217 case 'Q':
1218 /*
1219 * We could map -Qy into -Wl,-Qy etc.
1220 */
1221 default:
1222 error(arg);
1223 break;
1224 }
1225 }
1226
1227 free(nameflag);
1228
1229 /*
1230 * When compiling multiple source files in a single invocation some
1231 * compilers output objects into the current directory with
1232 * predictable and conventional names.
1233 *
1234 * We prevent any attempt to compile multiple files at once so that
1235 * any such objects created by a shadow can't escape into a later
1236 * link-edit.
1237 */
1238 if (c_files > 1 && op != CW_O_PREPROCESS) {
1239 errx(2, "multiple source files are "
1240 "allowed only with -E or -P");
1241 }
1242
1243 /*
1244 * Make sure that we do not have any unintended interactions between
1245 * the xarch options passed in and the version of the Studio compiler
1246 * used.
1247 */
1248 if ((mflag & (SS11|SS12)) == (SS11|SS12)) {
1249 errx(2,
1250 "Conflicting \"-xarch=\" flags (both Studio 11 and 12)\n");
1251 }
1252
1253 switch (mflag) {
1254 case 0:
1255 /* FALLTHROUGH */
1256 case M32:
1257 #if defined(__sparc)
1258 /*
1259 * Only -m32 is defined and so put in the missing xarch
1260 * translation.
1261 */
1262 newae(ctx->i_ae, "-mcpu=v8");
1263 newae(ctx->i_ae, "-mno-v8plus");
1264 #endif
1265 break;
1266 case M64:
1267 #if defined(__sparc)
1268 /*
1269 * Only -m64 is defined and so put in the missing xarch
1270 * translation.
1271 */
1272 newae(ctx->i_ae, "-mcpu=v9");
1273 #endif
1274 break;
1275 case SS12:
1276 #if defined(__sparc)
1277 /* no -m32/-m64 flag used - this is an error for sparc builds */
1278 (void) fprintf(stderr, "No -m32/-m64 flag defined\n");
1279 exit(2);
1280 #endif
1281 break;
1282 case SS11:
1283 /* FALLTHROUGH */
1284 case (SS11|M32):
1285 case (SS11|M64):
1286 break;
1287 case (SS12|M32):
1288 #if defined(__sparc)
1289 /*
1290 * Need to add in further 32 bit options because with SS12
1291 * the xarch=sparcvis option can be applied to 32 or 64
1292 * bit, and so the translatation table (xtbl) cannot handle
1293 * that.
1294 */
1295 newae(ctx->i_ae, "-mv8plus");
1296 #endif
1297 break;
1298 case (SS12|M64):
1299 break;
1300 default:
1301 (void) fprintf(stderr,
1302 "Incompatible -xarch= and/or -m32/-m64 options used.\n");
1303 exit(2);
1304 }
1305
1306 if (ctx->i_flags & CW_F_SHADOW) {
1307 if (op == CW_O_PREPROCESS)
1308 exit(0);
1309 else if (op == CW_O_LINK && c_files == 0)
1310 exit(0);
1311 }
1312
1313 if (model != NULL)
1314 newae(ctx->i_ae, model);
1315 if (!nolibc)
1316 newae(ctx->i_ae, "-lc");
1317 if (!seen_o && (ctx->i_flags & CW_F_SHADOW)) {
1318 newae(ctx->i_ae, "-o");
1319 newae(ctx->i_ae, discard_file_name(ctx, NULL));
1320 }
1321 }
1322
1323 static void
1324 do_cc(cw_ictx_t *ctx)
1325 {
1326 int in_output = 0, seen_o = 0, c_files = 0;
1327 cw_op_t op = CW_O_LINK;
1328 char *nameflag;
1329
1330 if (ctx->i_flags & CW_F_PROG) {
1331 newae(ctx->i_ae, "-V");
1332 return;
1333 }
1334
1335 if (asprintf(&nameflag, "-_%s=", ctx->i_compiler->c_name) == -1)
1336 nomem();
1337
1338 while (--ctx->i_oldargc > 0) {
1339 char *arg = *++ctx->i_oldargv;
1340 size_t arglen = strlen(arg);
1341
1342 if (strncmp(arg, "-_CC=", 5) == 0) {
1343 newae(ctx->i_ae, strchr(arg, '=') + 1);
1344 continue;
1345 }
1346
1347 if (*arg != '-') {
1348 if (!in_output && arglen > 2 &&
1349 arg[arglen - 2] == '.' &&
1350 (arg[arglen - 1] == 'S' || arg[arglen - 1] == 's' ||
1351 arg[arglen - 1] == 'c' || arg[arglen - 1] == 'i'))
1352 c_files++;
1353
1354 if (in_output == 0 || !(ctx->i_flags & CW_F_SHADOW)) {
1355 newae(ctx->i_ae, arg);
1356 } else {
1357 in_output = 0;
1358 newae(ctx->i_ae, discard_file_name(ctx, arg));
1359 }
1360 continue;
1361 }
1362 switch (*(arg + 1)) {
1363 case '_':
1364 if ((strncmp(arg, nameflag, strlen(nameflag)) == 0) ||
1365 (strncmp(arg, "-_cc=", 5) == 0) ||
1366 (strncmp(arg, "-_sun=", 6) == 0)) {
1367 newae(ctx->i_ae, strchr(arg, '=') + 1);
1368 }
1369 break;
1370
1371 case 'V':
1372 ctx->i_flags &= ~CW_F_ECHO;
1373 newae(ctx->i_ae, arg);
1374 break;
1375 case 'o':
1376 seen_o = 1;
1377 if (strlen(arg) == 2) {
1378 in_output = 1;
1379 newae(ctx->i_ae, arg);
1380 } else if (ctx->i_flags & CW_F_SHADOW) {
1381 newae(ctx->i_ae, "-o");
1382 newae(ctx->i_ae, discard_file_name(ctx, arg));
1383 } else {
1384 newae(ctx->i_ae, arg);
1385 }
1386 break;
1387 case 'c':
1388 case 'S':
1389 if (strlen(arg) == 2)
1390 op = CW_O_COMPILE;
1391 newae(ctx->i_ae, arg);
1392 break;
1393 case 'E':
1394 case 'P':
1395 if (strlen(arg) == 2)
1396 op = CW_O_PREPROCESS;
1397 /*FALLTHROUGH*/
1398 default:
1399 newae(ctx->i_ae, arg);
1400 }
1401 }
1402
1403 free(nameflag);
1404
1405 /* See the comment on this same code in do_gcc() */
1406 if (c_files > 1 && op != CW_O_PREPROCESS) {
1407 errx(2, "multiple source files are "
1408 "allowed only with -E or -P");
1409 }
1410
1411 if (ctx->i_flags & CW_F_SHADOW) {
1412 if (op == CW_O_PREPROCESS)
1413 exit(0);
1414 else if (op == CW_O_LINK && c_files == 0)
1415 exit(0);
1416 }
1417
1418 if (!seen_o && (ctx->i_flags & CW_F_SHADOW)) {
1419 newae(ctx->i_ae, "-o");
1420 newae(ctx->i_ae, discard_file_name(ctx, NULL));
1421 }
1422 }
1423
1424 static void
1425 prepctx(cw_ictx_t *ctx)
1426 {
1427 newae(ctx->i_ae, ctx->i_compiler->c_path);
1428
1429 if (ctx->i_flags & CW_F_PROG) {
1430 (void) printf("%s: %s\n", (ctx->i_flags & CW_F_SHADOW) ?
1431 "shadow" : "primary", ctx->i_compiler->c_path);
1432 (void) fflush(stdout);
1433 }
1434
1435 if (!(ctx->i_flags & CW_F_XLATE))
1436 return;
1437
1438 switch (ctx->i_compiler->c_style) {
1439 case SUN:
1440 do_cc(ctx);
1441 break;
1442 case GNU:
1443 do_gcc(ctx);
1444 break;
1445 }
1446 }
1447
1448 static int
1449 invoke(cw_ictx_t *ctx)
1450 {
1451 char **newargv;
1452 int ac;
1453 struct ae *a;
1454
1455 if ((newargv = calloc(sizeof (*newargv), ctx->i_ae->ael_argc + 1)) ==
1456 NULL)
1457 nomem();
1458
1459 if (ctx->i_flags & CW_F_ECHO)
1460 (void) fprintf(stderr, "+ ");
1461
1462 for (ac = 0, a = ctx->i_ae->ael_head; a; a = a->ae_next, ac++) {
1463 newargv[ac] = a->ae_arg;
1464 if (ctx->i_flags & CW_F_ECHO)
1465 (void) fprintf(stderr, "%s ", a->ae_arg);
1466 if (a == ctx->i_ae->ael_tail)
1467 break;
1468 }
1469
1470 if (ctx->i_flags & CW_F_ECHO) {
1471 (void) fprintf(stderr, "\n");
1472 (void) fflush(stderr);
1473 }
1474
1475 if (!(ctx->i_flags & CW_F_EXEC))
1476 return (0);
1477
1478 /*
1479 * We must fix up the environment here so that the dependency files are
1480 * not trampled by the shadow compiler. Also take care of GCC
1481 * environment variables that will throw off gcc. This assumes a primary
1482 * gcc.
1483 */
1484 if ((ctx->i_flags & CW_F_SHADOW) &&
1485 (unsetenv("SUNPRO_DEPENDENCIES") != 0 ||
1486 unsetenv("DEPENDENCIES_OUTPUT") != 0 ||
1487 unsetenv("GCC_ROOT") != 0)) {
1488 (void) fprintf(stderr, "error: environment setup failed: %s\n",
1489 strerror(errno));
1490 return (-1);
1491 }
1492
1493 (void) execv(newargv[0], newargv);
1494 warn("couldn't run %s", newargv[0]);
1495
1496 return (-1);
1497 }
1498
1499 static int
1500 reap(cw_ictx_t *ctx)
1501 {
1502 int status, ret = 0;
1503 char buf[1024];
1504 struct stat s;
1505
1506 /*
1507 * Only wait for one specific child.
1508 */
1509 if (ctx->i_pid <= 0)
1510 return (-1);
1511
1512 do {
1513 if (waitpid(ctx->i_pid, &status, 0) < 0) {
1514 warn("cannot reap child");
1515 return (-1);
1516 }
1517 if (status != 0) {
1518 if (WIFSIGNALED(status)) {
1519 ret = -WTERMSIG(status);
1520 break;
1521 } else if (WIFEXITED(status)) {
1522 ret = WEXITSTATUS(status);
1523 break;
1524 }
1525 }
1526 } while (!WIFEXITED(status) && !WIFSIGNALED(status));
1527
1528 if (stat(ctx->i_stderr, &s) < 0) {
1529 warn("stat failed on child cleanup");
1530 return (-1);
1531 }
1532 if (s.st_size != 0) {
1533 FILE *f;
1534
1535 if ((f = fopen(ctx->i_stderr, "r")) != NULL) {
1536 while (fgets(buf, sizeof (buf), f))
1537 (void) fprintf(stderr, "%s", buf);
1538 (void) fflush(stderr);
1539 (void) fclose(f);
1540 }
1541 }
1542 (void) unlink(ctx->i_stderr);
1543 free(ctx->i_stderr);
1544
1545 /*
1546 * cc returns an error code when given -V; we want that to succeed.
1547 */
1548 if (ctx->i_flags & CW_F_PROG)
1549 return (0);
1550
1551 return (ret);
1552 }
1553
1554 static int
1555 exec_ctx(cw_ictx_t *ctx, int block)
1556 {
1557 if ((ctx->i_stderr = tempnam(ctx->i_tmpdir, "cw")) == NULL) {
1558 nomem();
1559 return (-1);
1560 }
1561
1562 if ((ctx->i_pid = fork()) == 0) {
1563 int fd;
1564
1565 (void) fclose(stderr);
1566 if ((fd = open(ctx->i_stderr, O_WRONLY | O_CREAT | O_EXCL,
1567 0666)) < 0) {
1568 err(1, "open failed for standard error");
1569 }
1570 if (dup2(fd, 2) < 0) {
1571 err(1, "dup2 failed for standard error");
1572 }
1573 if (fd != 2)
1574 (void) close(fd);
1575 if (freopen("/dev/fd/2", "w", stderr) == NULL) {
1576 err(1, "freopen failed for /dev/fd/2");
1577 }
1578
1579 prepctx(ctx);
1580 exit(invoke(ctx));
1581 }
1582
1583 if (ctx->i_pid < 0) {
1584 err(1, "fork failed");
1585 }
1586
1587 if (block)
1588 return (reap(ctx));
1589
1590 return (0);
1591 }
1592
1593 static void
1594 parse_compiler(const char *spec, cw_compiler_t *compiler)
1595 {
1596 char *tspec, *token;
1597
1598 if ((tspec = strdup(spec)) == NULL)
1599 nomem();
1600
1601 if ((token = strsep(&tspec, ",")) == NULL)
1602 errx(1, "Compiler is missing a name: %s", spec);
1603 compiler->c_name = token;
1604
1605 if ((token = strsep(&tspec, ",")) == NULL)
1606 errx(1, "Compiler is missing a path: %s", spec);
1607 compiler->c_path = token;
1608
1609 if ((token = strsep(&tspec, ",")) == NULL)
1610 errx(1, "Compiler is missing a style: %s", spec);
1611
1612 if ((strcasecmp(token, "gnu") == 0) ||
1613 (strcasecmp(token, "gcc") == 0))
1614 compiler->c_style = GNU;
1615 else if ((strcasecmp(token, "sun") == 0) ||
1616 (strcasecmp(token, "cc") == 0))
1617 compiler->c_style = SUN;
1618 else
1619 errx(1, "unknown compiler style: %s", token);
1620
1621 if (tspec != NULL)
1622 errx(1, "Excess tokens in compiler: %s", spec);
1623 }
1624
1625 static void
1626 cleanup(cw_ictx_t *ctx)
1627 {
1628 DIR *dirp;
1629 struct dirent *dp;
1630 char buf[MAXPATHLEN];
1631
1632 if ((dirp = opendir(ctx->i_tmpdir)) == NULL) {
1633 if (errno != ENOENT) {
1634 err(1, "couldn't open temp directory: %s",
1635 ctx->i_tmpdir);
1636 } else {
1637 return;
1638 }
1639 }
1640
1641 errno = 0;
1642 while ((dp = readdir(dirp)) != NULL) {
1643 (void) snprintf(buf, MAXPATHLEN, "%s/%s", ctx->i_tmpdir,
1644 dp->d_name);
1645
1646 if (strncmp(dp->d_name, ".", strlen(dp->d_name)) == 0 ||
1647 strncmp(dp->d_name, "..", strlen(dp->d_name)) == 0)
1648 continue;
1649
1650 if (unlink(buf) == -1)
1651 err(1, "failed to unlink temp file: %s", dp->d_name);
1652 errno = 0;
1653 }
1654
1655 if (errno != 0) {
1656 err(1, "failed to read temporary directory: %s",
1657 ctx->i_tmpdir);
1658 }
1659
1660 (void) closedir(dirp);
1661 if (rmdir(ctx->i_tmpdir) != 0) {
1662 err(1, "failed to unlink temporary directory: %s",
1663 ctx->i_tmpdir);
1664 }
1665 }
1666
1667 int
1668 main(int argc, char **argv)
1669 {
1670 int ch;
1671 cw_compiler_t primary = { NULL, NULL, 0 };
1672 cw_compiler_t shadows[10];
1673 int nshadows = 0;
1674 int ret = 0;
1675 boolean_t do_serial = B_FALSE;
1676 boolean_t do_exec = B_FALSE;
1677 boolean_t vflg = B_FALSE;
1678 boolean_t Cflg = B_FALSE;
1679 boolean_t cflg = B_FALSE;
1680 boolean_t nflg = B_FALSE;
1681 char *tmpdir;
1682
1683 cw_ictx_t *main_ctx;
1684
1685 static struct option longopts[] = {
1686 { "compiler", no_argument, NULL, 'c' },
1687 { "noecho", no_argument, NULL, 'n' },
1688 { "primary", required_argument, NULL, 'p' },
1689 { "shadow", required_argument, NULL, 's' },
1690 { "versions", no_argument, NULL, 'v' },
1691 { NULL, 0, NULL, 0 },
1692 };
1693
1694
1695 if ((main_ctx = newictx()) == NULL)
1696 nomem();
1697
1698 while ((ch = getopt_long(argc, argv, "C", longopts, NULL)) != -1) {
1699 switch (ch) {
1700 case 'c':
1701 cflg = B_TRUE;
1702 break;
1703 case 'C':
1704 Cflg = B_TRUE;
1705 break;
1706 case 'n':
1707 nflg = B_TRUE;
1708 break;
1709 case 'p':
1710 if (primary.c_path != NULL) {
1711 warnx("Only one primary compiler may "
1712 "be specified");
1713 usage();
1714 }
1715
1716 parse_compiler(optarg, &primary);
1717 break;
1718 case 's':
1719 if (nshadows >= 10)
1720 errx(1, "May only use 10 shadows at "
1721 "the moment");
1722 parse_compiler(optarg, &shadows[nshadows]);
1723 nshadows++;
1724 break;
1725 case 'v':
1726 vflg = B_TRUE;
1727 break;
1728 default:
1729 (void) fprintf(stderr, "Did you forget '--'?\n");
1730 usage();
1731 }
1732 }
1733
1734 if (primary.c_path == NULL) {
1735 warnx("A primary compiler must be specified");
1736 usage();
1737 }
1738
1739 do_serial = (getenv("CW_SHADOW_SERIAL") == NULL) ? B_FALSE : B_TRUE;
1740 do_exec = (getenv("CW_NO_EXEC") == NULL) ? B_TRUE : B_FALSE;
1741
1742 /* Leave room for argv[0] */
1743 argc -= (optind - 1);
1744 argv += (optind - 1);
1745
1746 main_ctx->i_oldargc = argc;
1747 main_ctx->i_oldargv = argv;
1748 main_ctx->i_flags = CW_F_XLATE;
1749 if (nflg == 0)
1750 main_ctx->i_flags |= CW_F_ECHO;
1751 if (do_exec)
1752 main_ctx->i_flags |= CW_F_EXEC;
1753 if (Cflg)
1754 main_ctx->i_flags |= CW_F_CXX;
1755 main_ctx->i_compiler = &primary;
1756
1757 if (cflg) {
1758 (void) fputs(primary.c_path, stdout);
1759 }
1760
1761 if (vflg) {
1762 (void) printf("cw version %s\n", CW_VERSION);
1763 (void) fflush(stdout);
1764 main_ctx->i_flags &= ~CW_F_ECHO;
1765 main_ctx->i_flags |= CW_F_PROG | CW_F_EXEC;
1766 do_serial = 1;
1767 }
1768
1769 tmpdir = getenv("TMPDIR");
1770 if (tmpdir == NULL)
1771 tmpdir = "/tmp";
1772
1773 if (asprintf(&main_ctx->i_tmpdir, "%s/cw.XXXXXX", tmpdir) == -1)
1774 nomem();
1775
1776 if ((main_ctx->i_tmpdir = mkdtemp(main_ctx->i_tmpdir)) == NULL)
1777 errx(1, "failed to create temporary directory");
1778
1779 ret |= exec_ctx(main_ctx, do_serial);
1780
1781 for (int i = 0; i < nshadows; i++) {
1782 int r;
1783 cw_ictx_t *shadow_ctx;
1784
1785 if ((shadow_ctx = newictx()) == NULL)
1786 nomem();
1787
1788 (void) memcpy(shadow_ctx, main_ctx, sizeof (cw_ictx_t));
1789
1790 shadow_ctx->i_flags |= CW_F_SHADOW;
1791 shadow_ctx->i_compiler = &shadows[i];
1792
1793 r = exec_ctx(shadow_ctx, do_serial);
1794 if (r == 0) {
1795 shadow_ctx->i_next = main_ctx->i_next;
1796 main_ctx->i_next = shadow_ctx;
1797 }
1798 ret |= r;
1799 }
1800
1801 if (!do_serial) {
1802 cw_ictx_t *next = main_ctx;
1803 while (next != NULL) {
1804 cw_ictx_t *toreap = next;
1805 next = next->i_next;
1806 ret |= reap(toreap);
1807 }
1808 }
1809
1810 cleanup(main_ctx);
1811 return (ret);
1812 }