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 * Copyright 2019 Joyent, Inc.
31 */
32
33 /*
34 * Wrapper for the GNU C compiler to make it accept the Sun C compiler
35 * arguments where possible.
36 *
37 * Since the translation is inexact, this is something of a work-in-progress.
38 *
39 */
40
41 /* If you modify this file, you must increment CW_VERSION */
42 #define CW_VERSION "3.0"
43
44 /*
45 * -# Verbose mode
46 * -### Show compiler commands built by driver, no compilation
47 * -A<name[(tokens)]> Preprocessor predicate assertion
48 * -B<[static|dynamic]> Specify dynamic or static binding
49 * -C Prevent preprocessor from removing comments
50 * -c Compile only - produce .o files, suppress linking
51 * -cg92 Alias for -xtarget=ss1000
52 * -D<name[=token]> Associate name with token as if by #define
53 * -d[y|n] dynamic [-dy] or static [-dn] option to linker
54 * -E Compile source through preprocessor only, output to stdout
55 * -erroff=<t> Suppress warnings specified by tags t(%none, %all, <tag list>)
56 * -errtags=<a> Display messages with tags a(no, yes)
57 * -errwarn=<t> Treats warnings specified by tags t(%none, %all, <tag list>)
58 * as errors
59 * -fast Optimize using a selection of options
60 * -fd Report old-style function definitions and declarations
61 * -fnonstd Initialize floating-point hardware to non-standard preferences
62 * -fns[=<yes|no>] Select non-standard floating point mode
63 * -fprecision=<p> Set FP rounding precision mode p(single, double, extended)
64 * -fround=<r> Select the IEEE rounding mode in effect at startup
65 * -fsimple[=<n>] Select floating-point optimization preferences <n>
66 * -fsingle Use single-precision arithmetic (-Xt and -Xs modes only)
67 * -ftrap=<t> Select floating-point trapping mode in effect at startup
68 * -fstore force floating pt. values to target precision on assignment
69 * -G Build a dynamic shared library
70 * -g Compile for debugging
71 * -H Print path name of each file included during compilation
72 * -h <name> Assign <name> to generated dynamic shared library
73 * -I<dir> Add <dir> to preprocessor #include file search path
74 * -i Passed to linker to ignore any LD_LIBRARY_PATH setting
75 * -keeptmp Keep temporary files created during compilation
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 * -L<dir> pass-thru
184 * -l<name> pass-thru
185 * -mc error
186 * -mr error
187 * -mr,"string" error
188 * -mt -D_REENTRANT
189 * -native error
190 * -nofstore error
191 * -nolib -nodefaultlibs
192 * -norunpath ignore
193 * -O -O1 (Check the man page to be certain)
194 * -o <outputfile> pass-thru
195 * -P -E -o filename.i (or error)
196 * -p pass-thru
197 * -Q[y|n] error
198 * -R<dir[:dir]> pass-thru
199 * -S pass-thru
200 * -s -Wl,-s
201 * -t -Wl,-t
202 * -U<name> pass-thru
203 * -V --version
204 * -v -Wall
205 * -Wa,<arg> pass-thru
206 * -Wp,<arg> pass-thru except -xc99=<a>
207 * -Wl,<arg> pass-thru
208 * -W{m,0,2,h,i,u> error/ignore
209 * -xmodel=kernel -ffreestanding -mcmodel=kernel -mno-red-zone
210 * -Wu,-save_args -msave-args
211 * -w pass-thru
212 * -Xa -std=iso9899:199409 or -ansi
213 * -Xt error
214 * -Xs -traditional -std=c89
215 * -xarch=<a> table
216 * -xbuiltin[=<b>] -fbuiltin (-fno-builtin otherwise)
217 * -xCC ignore
218 * -xchip=<c> table
219 * -xcode=<c> table
220 * -xdebugformat=<format> ignore (always use dwarf-2 for gcc)
221 * -xcrossfile[=<n>] ignore
222 * -xe error
223 * -xF error
224 * -xhelp=<f> error
225 * -xildoff ignore
226 * -xildon ignore
227 * -xinline ignore
228 * -xlibmieee error
229 * -xlibmil error
230 * -xlic_lib=sunperf error
231 * -xmaxopt=[...] error
232 * -xO<n> -O<n>
233 * -xP error
234 * -xprofile=<p> error
235 * -xregs=<r> table
236 * -xs error
237 * -xsb error
238 * -xsbfast error
239 * -xsfpconst error
240 * -xspace ignore (-not -Os)
241 * -xstrconst ignore
242 * -xtarget=<t> table
243 * -xtemp=<dir> error
244 * -xtime error
245 * -xtransition -Wtransition
246 * -xunroll=n error
247 * -W0,-xdbggen=no%usedonly -fno-eliminate-unused-debug-symbols
248 * -fno-eliminate-unused-debug-types
249 * -Y<c>,<dir> error
250 * -YA,<dir> error
251 * -YI,<dir> -nostdinc -I<dir>
252 * -YP,<dir> error
253 * -YS,<dir> error
254 */
255
256 #include <ctype.h>
257 #include <err.h>
258 #include <errno.h>
259 #include <fcntl.h>
260 #include <getopt.h>
261 #include <stdio.h>
262 #include <stdlib.h>
263 #include <string.h>
264 #include <unistd.h>
265 #include <dirent.h>
266
267 #include <sys/param.h>
268 #include <sys/stat.h>
269 #include <sys/types.h>
270 #include <sys/utsname.h>
271 #include <sys/wait.h>
272
273 #define CW_F_CXX 0x01
274 #define CW_F_SHADOW 0x02
275 #define CW_F_EXEC 0x04
276 #define CW_F_ECHO 0x08
277 #define CW_F_XLATE 0x10
278 #define CW_F_PROG 0x20
279
280 typedef enum cw_op {
281 CW_O_NONE = 0,
282 CW_O_PREPROCESS,
283 CW_O_COMPILE,
284 CW_O_LINK
285 } cw_op_t;
286
287 struct aelist {
288 struct ae {
289 struct ae *ae_next;
290 char *ae_arg;
291 } *ael_head, *ael_tail;
292 int ael_argc;
293 };
294
295 typedef enum {
296 GNU,
297 SUN,
298 SMATCH
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_tmpdir;
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 static void
487 Xsmode(struct aelist *h)
488 {
489 static int xsonce;
490
491 if (xsonce++)
492 return;
493
494 newae(h, "-traditional");
495 newae(h, "-traditional-cpp");
496 }
497
498 static void
499 usage()
500 {
501 extern char *__progname;
502 (void) fprintf(stderr,
503 "usage: %s [-C] [--versions] --primary <compiler> "
504 "[--shadow <compiler>]... -- cflags...\n",
505 __progname);
506 (void) fprintf(stderr, "compilers take the form: name,path,style\n"
507 " - name: a unique name usable in flag specifiers\n"
508 " - path: path to the compiler binary\n"
509 " - style: the style of flags expected: either sun or gnu\n");
510 exit(2);
511 }
512
513 static int
514 xlate_xtb(struct aelist *h, const char *xarg)
515 {
516 int i, j;
517
518 for (i = 0; i < xtbl_size; i++) {
519 if (strcmp(xtbl[i].x_arg, xarg) == 0)
520 break;
521 }
522
523 /*
524 * At the end of the table and so no matching "arg" entry
525 * found and so this must be a bad -xarch= flag.
526 */
527 if (i == xtbl_size)
528 error(xarg);
529
530 for (j = 0; j < TRANS_ENTRY; j++) {
531 if (xtbl[i].x_trans[j] != NULL)
532 newae(h, xtbl[i].x_trans[j]);
533 else
534 break;
535 }
536 return (xtbl[i].x_flags);
537
538 }
539
540 static void
541 xlate(struct aelist *h, const char *xarg, const char **table)
542 {
543 while (*table != NULL && strcmp(xarg, *table) != 0) {
544 while (*table != NULL)
545 table++;
546 table++;
547 }
548
549 if (*table == NULL)
550 error(xarg);
551
552 table++;
553
554 while (*table != NULL) {
555 newae(h, *table);
556 table++;
557 }
558 }
559
560 /*
561 * The compiler wants the output file to end in appropriate extension. If
562 * we're generating a name from whole cloth (path == NULL), we assume that
563 * extension to be .o, otherwise we match the extension of the caller.
564 */
565 static char *
566 discard_file_name(cw_ictx_t *ctx, const char *path)
567 {
568 char *ret, *ext;
569 char tmpl[] = "cwXXXXXX";
570
571 if (path == NULL) {
572 ext = ".o";
573 } else {
574 ext = strrchr(path, '.');
575 }
576
577 /*
578 * We need absolute control over where the temporary file goes, since
579 * we rely on it for cleanup so tempnam(3C) and tmpnam(3C) are
580 * inappropriate (they use TMPDIR, preferentially).
581 *
582 * mkstemp(3C) doesn't actually help us, since the temporary file
583 * isn't used by us, only its name.
584 */
585 if (mktemp(tmpl) == NULL)
586 nomem();
587
588 (void) asprintf(&ret, "%s/%s%s", ctx->i_tmpdir, tmpl,
589 (ext != NULL) ? ext : "");
590
591 if (ret == NULL)
592 nomem();
593
594 return (ret);
595 }
596
597 static boolean_t
598 is_source_file(const char *path)
599 {
600 char *ext = strrchr(path, '.');
601
602 if ((ext == NULL) || ((ext + 1) == '\0'))
603 return (B_FALSE);
604
605 ext += 1;
606
607 if ((strcasecmp(ext, "c") == 0) ||
608 (strcmp(ext, "cc") == 0) ||
609 (strcmp(ext, "i") == 0) ||
610 (strcasecmp(ext, "s") == 0) ||
611 (strcmp(ext, "cpp") == 0)) {
612 return (B_TRUE);
613 }
614
615 return (B_FALSE);
616 }
617
618
619 static void
620 do_gcc(cw_ictx_t *ctx)
621 {
622 int c;
623 int nolibc = 0;
624 int in_output = 0, seen_o = 0, c_files = 0;
625 cw_op_t op = CW_O_LINK;
626 char *model = NULL;
627 char *nameflag;
628 int mflag = 0;
629
630 if (ctx->i_flags & CW_F_PROG) {
631 newae(ctx->i_ae, "--version");
632 return;
633 }
634
635 newae(ctx->i_ae, "-fident");
636 newae(ctx->i_ae, "-finline");
637 newae(ctx->i_ae, "-fno-inline-functions");
638 newae(ctx->i_ae, "-fno-builtin");
639 newae(ctx->i_ae, "-fno-asm");
640 newae(ctx->i_ae, "-fdiagnostics-show-option");
641 newae(ctx->i_ae, "-nodefaultlibs");
642
643 #if defined(__sparc)
644 /*
645 * The SPARC ldd and std instructions require 8-byte alignment of
646 * their address operand. gcc correctly uses them only when the
647 * ABI requires 8-byte alignment; unfortunately we have a number of
648 * pieces of buggy code that doesn't conform to the ABI. This
649 * flag makes gcc work more like Studio with -xmemalign=4.
650 */
651 newae(ctx->i_ae, "-mno-integer-ldd-std");
652 #endif
653
654 /*
655 * This is needed because 'u' is defined
656 * under a conditional on 'sun'. Should
657 * probably just remove the conditional,
658 * or make it be dependent on '__sun'.
659 *
660 * -Dunix is also missing in enhanced ANSI mode
661 */
662 newae(ctx->i_ae, "-D__sun");
663
664 if (asprintf(&nameflag, "-_%s=", ctx->i_compiler->c_name) == -1)
665 nomem();
666
667 /*
668 * Walk the argument list, translating as we go ..
669 */
670 while (--ctx->i_oldargc > 0) {
671 char *arg = *++ctx->i_oldargv;
672 size_t arglen = strlen(arg);
673
674 if (*arg == '-') {
675 arglen--;
676 } else {
677 /*
678 * Discard inline files that gcc doesn't grok
679 */
680 if (!in_output && arglen > 3 &&
681 strcmp(arg + arglen - 3, ".il") == 0)
682 continue;
683
684 if (!in_output && is_source_file(arg))
685 c_files++;
686
687 /*
688 * Otherwise, filenames and partial arguments
689 * are passed through for gcc to chew on. However,
690 * output is always discarded for the secondary
691 * compiler.
692 */
693 if ((ctx->i_flags & CW_F_SHADOW) && in_output) {
694 newae(ctx->i_ae, discard_file_name(ctx, arg));
695 } else {
696 newae(ctx->i_ae, arg);
697 }
698 in_output = 0;
699 continue;
700 }
701
702 if (ctx->i_flags & CW_F_CXX) {
703 if (strncmp(arg, "-_g++=", 6) == 0) {
704 newae(ctx->i_ae, strchr(arg, '=') + 1);
705 continue;
706 }
707 if (strncmp(arg, "-compat=", 8) == 0) {
708 /* discard -compat=4 and -compat=5 */
709 continue;
710 }
711 if (strcmp(arg, "-Qoption") == 0) {
712 /* discard -Qoption and its two arguments */
713 if (ctx->i_oldargc < 3)
714 error(arg);
715 ctx->i_oldargc -= 2;
716 ctx->i_oldargv += 2;
717 continue;
718 }
719 if (strcmp(arg, "-xwe") == 0) {
720 /* turn warnings into errors */
721 newae(ctx->i_ae, "-Werror");
722 continue;
723 }
724 if (strcmp(arg, "-norunpath") == 0) {
725 /* gcc has no corresponding option */
726 continue;
727 }
728 if (strcmp(arg, "-nolib") == 0) {
729 /* -nodefaultlibs is on by default */
730 nolibc = 1;
731 continue;
732 }
733 #if defined(__sparc)
734 if (strcmp(arg, "-cg92") == 0) {
735 mflag |= xlate_xtb(ctx->i_ae, "v8");
736 xlate(ctx->i_ae, "super", xchip_tbl);
737 continue;
738 }
739 #endif /* __sparc */
740 }
741
742 switch ((c = arg[1])) {
743 case '_':
744 if ((strncmp(arg, nameflag, strlen(nameflag)) == 0) ||
745 (strncmp(arg, "-_gcc=", 6) == 0) ||
746 (strncmp(arg, "-_gnu=", 6) == 0)) {
747 newae(ctx->i_ae, strchr(arg, '=') + 1);
748 }
749 break;
750 case '#':
751 if (arglen == 1) {
752 newae(ctx->i_ae, "-v");
753 break;
754 }
755 error(arg);
756 break;
757 case 'f':
758 if ((strcmp(arg, "-fpic") == 0) ||
759 (strcmp(arg, "-fPIC") == 0)) {
760 newae(ctx->i_ae, arg);
761 break;
762 }
763 error(arg);
764 break;
765 case 'g':
766 newae(ctx->i_ae, "-gdwarf-2");
767 break;
768 case 'E':
769 if (arglen == 1) {
770 newae(ctx->i_ae, "-xc");
771 newae(ctx->i_ae, arg);
772 op = CW_O_PREPROCESS;
773 nolibc = 1;
774 break;
775 }
776 error(arg);
777 break;
778 case 'c':
779 case 'S':
780 if (arglen == 1) {
781 op = CW_O_COMPILE;
782 nolibc = 1;
783 }
784 /* FALLTHROUGH */
785 case 'C':
786 case 'H':
787 case 'p':
788 if (arglen == 1) {
789 newae(ctx->i_ae, arg);
790 break;
791 }
792 error(arg);
793 break;
794 case 'A':
795 case 'h':
796 case 'I':
797 case 'i':
798 case 'L':
799 case 'l':
800 case 'R':
801 case 'U':
802 case 'u':
803 case 'w':
804 newae(ctx->i_ae, arg);
805 break;
806 case 'o':
807 seen_o = 1;
808 if (arglen == 1) {
809 in_output = 1;
810 newae(ctx->i_ae, arg);
811 } else if (ctx->i_flags & CW_F_SHADOW) {
812 newae(ctx->i_ae, "-o");
813 newae(ctx->i_ae, discard_file_name(ctx, arg));
814 } else {
815 newae(ctx->i_ae, arg);
816 }
817 break;
818 case 'D':
819 newae(ctx->i_ae, arg);
820 /*
821 * XXX Clearly a hack ... do we need _KADB too?
822 */
823 if (strcmp(arg, "-D_KERNEL") == 0 ||
824 strcmp(arg, "-D_BOOT") == 0)
825 newae(ctx->i_ae, "-ffreestanding");
826 break;
827 case 'd':
828 if (arglen == 2) {
829 if (strcmp(arg, "-dy") == 0) {
830 newae(ctx->i_ae, "-Wl,-dy");
831 break;
832 }
833 if (strcmp(arg, "-dn") == 0) {
834 newae(ctx->i_ae, "-Wl,-dn");
835 break;
836 }
837 }
838 if (strcmp(arg, "-dalign") == 0) {
839 /*
840 * -dalign forces alignment in some cases;
841 * gcc does not need any flag to do this.
842 */
843 break;
844 }
845 error(arg);
846 break;
847 case 'e':
848 if (strcmp(arg,
849 "-erroff=E_EMPTY_TRANSLATION_UNIT") == 0) {
850 /*
851 * Accept but ignore this -- gcc doesn't
852 * seem to complain about empty translation
853 * units
854 */
855 break;
856 }
857 /* XX64 -- ignore all -erroff= options, for now */
858 if (strncmp(arg, "-erroff=", 8) == 0)
859 break;
860 if (strcmp(arg, "-errtags=yes") == 0) {
861 warnings(ctx->i_ae);
862 break;
863 }
864 if (strcmp(arg, "-errwarn=%all") == 0) {
865 newae(ctx->i_ae, "-Werror");
866 break;
867 }
868 error(arg);
869 break;
870 case 'G':
871 newae(ctx->i_ae, "-shared");
872 nolibc = 1;
873 break;
874 case 'k':
875 if (strcmp(arg, "-keeptmp") == 0) {
876 newae(ctx->i_ae, "-save-temps");
877 break;
878 }
879 error(arg);
880 break;
881 case 'm':
882 if (strcmp(arg, "-mt") == 0) {
883 newae(ctx->i_ae, "-D_REENTRANT");
884 break;
885 }
886 if (strcmp(arg, "-m64") == 0) {
887 newae(ctx->i_ae, "-m64");
888 #if defined(__x86)
889 newae(ctx->i_ae, "-mtune=opteron");
890 #endif
891 mflag |= M64;
892 break;
893 }
894 if (strcmp(arg, "-m32") == 0) {
895 newae(ctx->i_ae, "-m32");
896 mflag |= M32;
897 break;
898 }
899 error(arg);
900 break;
901 case 'B': /* linker options */
902 case 'M':
903 case 'z':
904 {
905 char *opt;
906 size_t len;
907 char *s;
908
909 if (arglen == 1) {
910 opt = *++ctx->i_oldargv;
911 if (opt == NULL || *opt == '\0')
912 error(arg);
913 ctx->i_oldargc--;
914 } else {
915 opt = arg + 2;
916 }
917 len = strlen(opt) + 7;
918 if ((s = malloc(len)) == NULL)
919 nomem();
920 (void) snprintf(s, len, "-Wl,-%c%s", c, opt);
921 newae(ctx->i_ae, s);
922 free(s);
923 }
924 break;
925 case 'O':
926 if (arglen == 1) {
927 newae(ctx->i_ae, "-O");
928 break;
929 }
930 error(arg);
931 break;
932 case 'P':
933 /*
934 * We could do '-E -o filename.i', but that's hard,
935 * and we don't need it for the case that's triggering
936 * this addition. We'll require the user to specify
937 * -o in the Makefile. If they don't they'll find out
938 * in a hurry.
939 */
940 newae(ctx->i_ae, "-E");
941 op = CW_O_PREPROCESS;
942 nolibc = 1;
943 break;
944 case 's':
945 if (arglen == 1) {
946 newae(ctx->i_ae, "-Wl,-s");
947 break;
948 }
949 error(arg);
950 break;
951 case 't':
952 if (arglen == 1) {
953 newae(ctx->i_ae, "-Wl,-t");
954 break;
955 }
956 error(arg);
957 break;
958 case 'V':
959 if (arglen == 1) {
960 ctx->i_flags &= ~CW_F_ECHO;
961 newae(ctx->i_ae, "--version");
962 break;
963 }
964 error(arg);
965 break;
966 case 'v':
967 if (arglen == 1) {
968 warnings(ctx->i_ae);
969 break;
970 }
971 error(arg);
972 break;
973 case 'W':
974 if (strncmp(arg, "-Wp,-xc99", 9) == 0) {
975 /*
976 * gcc's preprocessor will accept c99
977 * regardless, so accept and ignore.
978 */
979 break;
980 }
981 if (strncmp(arg, "-Wa,", 4) == 0 ||
982 strncmp(arg, "-Wp,", 4) == 0 ||
983 strncmp(arg, "-Wl,", 4) == 0) {
984 newae(ctx->i_ae, arg);
985 break;
986 }
987 if (strcmp(arg, "-W0,-noglobal") == 0 ||
988 strcmp(arg, "-W0,-xglobalstatic") == 0) {
989 /*
990 * gcc doesn't prefix local symbols
991 * in debug mode, so this is not needed.
992 */
993 break;
994 }
995 if (strcmp(arg, "-W0,-Lt") == 0) {
996 /*
997 * Generate tests at the top of loops.
998 * There is no direct gcc equivalent, ignore.
999 */
1000 break;
1001 }
1002 if (strcmp(arg, "-W0,-xdbggen=no%usedonly") == 0) {
1003 newae(ctx->i_ae,
1004 "-fno-eliminate-unused-debug-symbols");
1005 newae(ctx->i_ae,
1006 "-fno-eliminate-unused-debug-types");
1007 break;
1008 }
1009 if (strcmp(arg, "-W2,-xwrap_int") == 0) {
1010 /*
1011 * Use the legacy behaviour (pre-SS11)
1012 * for integer wrapping.
1013 * gcc does not need this.
1014 */
1015 break;
1016 }
1017 if (strcmp(arg, "-Wd,-xsafe=unboundsym") == 0) {
1018 /*
1019 * Prevents optimizing away checks for
1020 * unbound weak symbol addresses. gcc does
1021 * not do this, so it's not needed.
1022 */
1023 break;
1024 }
1025 if (strncmp(arg, "-Wc,-xcode=", 11) == 0) {
1026 xlate(ctx->i_ae, arg + 11, xcode_tbl);
1027 break;
1028 }
1029 if (strncmp(arg, "-Wc,-Qiselect", 13) == 0) {
1030 /*
1031 * Prevents insertion of register symbols.
1032 * gcc doesn't do this, so ignore it.
1033 */
1034 break;
1035 }
1036 if (strcmp(arg, "-Wc,-Qassembler-ounrefsym=0") == 0) {
1037 /*
1038 * Prevents optimizing away of static variables.
1039 * gcc does not do this, so it's not needed.
1040 */
1041 break;
1042 }
1043 #if defined(__x86)
1044 if (strcmp(arg, "-Wu,-save_args") == 0) {
1045 newae(ctx->i_ae, "-msave-args");
1046 break;
1047 }
1048 #endif /* __x86 */
1049 error(arg);
1050 break;
1051 case 'X':
1052 if (strcmp(arg, "-Xa") == 0 ||
1053 strcmp(arg, "-Xt") == 0) {
1054 break;
1055 }
1056 if (strcmp(arg, "-Xs") == 0) {
1057 Xsmode(ctx->i_ae);
1058 break;
1059 }
1060 error(arg);
1061 break;
1062 case 'x':
1063 if (arglen == 1)
1064 error(arg);
1065 switch (arg[2]) {
1066 case 'a':
1067 if (strncmp(arg, "-xarch=", 7) == 0) {
1068 mflag |= xlate_xtb(ctx->i_ae, arg + 7);
1069 break;
1070 }
1071 error(arg);
1072 break;
1073 case 'b':
1074 if (strncmp(arg, "-xbuiltin=", 10) == 0) {
1075 if (strcmp(arg + 10, "%all"))
1076 newae(ctx->i_ae, "-fbuiltin");
1077 break;
1078 }
1079 error(arg);
1080 break;
1081 case 'C':
1082 /* Accept C++ style comments -- ignore */
1083 if (strcmp(arg, "-xCC") == 0)
1084 break;
1085 error(arg);
1086 break;
1087 case 'c':
1088 if (strncmp(arg, "-xc99=%all", 10) == 0) {
1089 newae(ctx->i_ae, "-std=gnu99");
1090 break;
1091 }
1092 if (strncmp(arg, "-xc99=%none", 11) == 0) {
1093 newae(ctx->i_ae, "-std=gnu89");
1094 break;
1095 }
1096 if (strncmp(arg, "-xchip=", 7) == 0) {
1097 xlate(ctx->i_ae, arg + 7, xchip_tbl);
1098 break;
1099 }
1100 if (strncmp(arg, "-xcode=", 7) == 0) {
1101 xlate(ctx->i_ae, arg + 7, xcode_tbl);
1102 break;
1103 }
1104 if (strncmp(arg, "-xcrossfile", 11) == 0)
1105 break;
1106 error(arg);
1107 break;
1108 case 'd':
1109 if (strncmp(arg, "-xdebugformat=", 14) == 0)
1110 break;
1111 error(arg);
1112 break;
1113 case 'F':
1114 /*
1115 * Compile for mapfile reordering, or unused
1116 * section elimination, syntax can be -xF or
1117 * more complex, like -xF=%all -- ignore.
1118 */
1119 if (strncmp(arg, "-xF", 3) == 0)
1120 break;
1121 error(arg);
1122 break;
1123 case 'i':
1124 if (strncmp(arg, "-xinline", 8) == 0)
1125 /* No inlining; ignore */
1126 break;
1127 if (strcmp(arg, "-xildon") == 0 ||
1128 strcmp(arg, "-xildoff") == 0)
1129 /* No incremental linking; ignore */
1130 break;
1131 error(arg);
1132 break;
1133 #if defined(__x86)
1134 case 'm':
1135 if (strcmp(arg, "-xmodel=kernel") == 0) {
1136 newae(ctx->i_ae, "-ffreestanding");
1137 newae(ctx->i_ae, "-mno-red-zone");
1138 model = "-mcmodel=kernel";
1139 nolibc = 1;
1140 break;
1141 }
1142 error(arg);
1143 break;
1144 #endif /* __x86 */
1145 case 'O':
1146 if (strncmp(arg, "-xO", 3) == 0) {
1147 size_t len = strlen(arg);
1148 char *s = NULL;
1149 int c = *(arg + 3);
1150 int level;
1151
1152 if (len != 4 || !isdigit(c))
1153 error(arg);
1154
1155 level = atoi(arg + 3);
1156 if (level > 5)
1157 error(arg);
1158 if (level >= 2) {
1159 /*
1160 * For gcc-3.4.x at -O2 we
1161 * need to disable optimizations
1162 * that break ON.
1163 */
1164 optim_disable(ctx->i_ae, level);
1165 /*
1166 * limit -xO3 to -O2 as well.
1167 */
1168 level = 2;
1169 }
1170 if (asprintf(&s, "-O%d", level) == -1)
1171 nomem();
1172 newae(ctx->i_ae, s);
1173 free(s);
1174 break;
1175 }
1176 error(arg);
1177 break;
1178 case 'r':
1179 if (strncmp(arg, "-xregs=", 7) == 0) {
1180 xlate(ctx->i_ae, arg + 7, xregs_tbl);
1181 break;
1182 }
1183 error(arg);
1184 break;
1185 case 's':
1186 if (strcmp(arg, "-xs") == 0 ||
1187 strcmp(arg, "-xspace") == 0 ||
1188 strcmp(arg, "-xstrconst") == 0)
1189 break;
1190 error(arg);
1191 break;
1192 case 't':
1193 if (strncmp(arg, "-xtarget=", 9) == 0) {
1194 xlate(ctx->i_ae, arg + 9, xtarget_tbl);
1195 break;
1196 }
1197 error(arg);
1198 break;
1199 case 'e':
1200 case 'h':
1201 case 'l':
1202 default:
1203 error(arg);
1204 break;
1205 }
1206 break;
1207 case 'Y':
1208 if (arglen == 1) {
1209 if ((arg = *++ctx->i_oldargv) == NULL ||
1210 *arg == '\0')
1211 error("-Y");
1212 ctx->i_oldargc--;
1213 arglen = strlen(arg + 1);
1214 } else {
1215 arg += 2;
1216 }
1217 /* Just ignore -YS,... for now */
1218 if (strncmp(arg, "S,", 2) == 0)
1219 break;
1220 if (strncmp(arg, "l,", 2) == 0) {
1221 char *s = strdup(arg);
1222 s[0] = '-';
1223 s[1] = 'B';
1224 newae(ctx->i_ae, s);
1225 free(s);
1226 break;
1227 }
1228 if (strncmp(arg, "I,", 2) == 0) {
1229 char *s = strdup(arg);
1230 s[0] = '-';
1231 s[1] = 'I';
1232 newae(ctx->i_ae, "-nostdinc");
1233 newae(ctx->i_ae, s);
1234 free(s);
1235 break;
1236 }
1237 error(arg);
1238 break;
1239 case 'Q':
1240 /*
1241 * We could map -Qy into -Wl,-Qy etc.
1242 */
1243 default:
1244 error(arg);
1245 break;
1246 }
1247 }
1248
1249 free(nameflag);
1250
1251 /*
1252 * When compiling multiple source files in a single invocation some
1253 * compilers output objects into the current directory with
1254 * predictable and conventional names.
1255 *
1256 * We prevent any attempt to compile multiple files at once so that
1257 * any such objects created by a shadow can't escape into a later
1258 * link-edit.
1259 */
1260 if (c_files > 1 && op != CW_O_PREPROCESS) {
1261 errx(2, "multiple source files are "
1262 "allowed only with -E or -P");
1263 }
1264
1265 /*
1266 * Make sure that we do not have any unintended interactions between
1267 * the xarch options passed in and the version of the Studio compiler
1268 * used.
1269 */
1270 if ((mflag & (SS11|SS12)) == (SS11|SS12)) {
1271 errx(2,
1272 "Conflicting \"-xarch=\" flags (both Studio 11 and 12)\n");
1273 }
1274
1275 switch (mflag) {
1276 case 0:
1277 /* FALLTHROUGH */
1278 case M32:
1279 #if defined(__sparc)
1280 /*
1281 * Only -m32 is defined and so put in the missing xarch
1282 * translation.
1283 */
1284 newae(ctx->i_ae, "-mcpu=v8");
1285 newae(ctx->i_ae, "-mno-v8plus");
1286 #endif
1287 break;
1288 case M64:
1289 #if defined(__sparc)
1290 /*
1291 * Only -m64 is defined and so put in the missing xarch
1292 * translation.
1293 */
1294 newae(ctx->i_ae, "-mcpu=v9");
1295 #endif
1296 break;
1297 case SS12:
1298 #if defined(__sparc)
1299 /* no -m32/-m64 flag used - this is an error for sparc builds */
1300 (void) fprintf(stderr, "No -m32/-m64 flag defined\n");
1301 exit(2);
1302 #endif
1303 break;
1304 case SS11:
1305 /* FALLTHROUGH */
1306 case (SS11|M32):
1307 case (SS11|M64):
1308 break;
1309 case (SS12|M32):
1310 #if defined(__sparc)
1311 /*
1312 * Need to add in further 32 bit options because with SS12
1313 * the xarch=sparcvis option can be applied to 32 or 64
1314 * bit, and so the translatation table (xtbl) cannot handle
1315 * that.
1316 */
1317 newae(ctx->i_ae, "-mv8plus");
1318 #endif
1319 break;
1320 case (SS12|M64):
1321 break;
1322 default:
1323 (void) fprintf(stderr,
1324 "Incompatible -xarch= and/or -m32/-m64 options used.\n");
1325 exit(2);
1326 }
1327
1328 if (ctx->i_flags & CW_F_SHADOW) {
1329 if (op == CW_O_PREPROCESS)
1330 exit(0);
1331 else if (op == CW_O_LINK && c_files == 0)
1332 exit(0);
1333 }
1334
1335 if (model != NULL)
1336 newae(ctx->i_ae, model);
1337 if (!nolibc)
1338 newae(ctx->i_ae, "-lc");
1339 if (!seen_o && (ctx->i_flags & CW_F_SHADOW)) {
1340 newae(ctx->i_ae, "-o");
1341 newae(ctx->i_ae, discard_file_name(ctx, NULL));
1342 }
1343 }
1344
1345 static void
1346 do_smatch(cw_ictx_t *ctx)
1347 {
1348 if (ctx->i_flags & CW_F_PROG) {
1349 newae(ctx->i_ae, "--version");
1350 return;
1351 }
1352
1353 /*
1354 * Some sources shouldn't run smatch at all.
1355 */
1356 for (int i = 0; i < ctx->i_oldargc; i++) {
1357 char *arg = ctx->i_oldargv[i];
1358
1359 if (strcmp(arg, "-_smatch=off") == 0) {
1360 ctx->i_flags &= ~ (CW_F_EXEC | CW_F_ECHO);
1361 return;
1362 }
1363 }
1364
1365 /*
1366 * smatch can handle gcc's options.
1367 */
1368 do_gcc(ctx);
1369 }
1370
1371 static void
1372 do_cc(cw_ictx_t *ctx)
1373 {
1374 int in_output = 0, seen_o = 0, c_files = 0;
1375 cw_op_t op = CW_O_LINK;
1376 char *nameflag;
1377
1378 if (ctx->i_flags & CW_F_PROG) {
1379 newae(ctx->i_ae, "-V");
1380 return;
1381 }
1382
1383 if (asprintf(&nameflag, "-_%s=", ctx->i_compiler->c_name) == -1)
1384 nomem();
1385
1386 while (--ctx->i_oldargc > 0) {
1387 char *arg = *++ctx->i_oldargv;
1388
1389 if (strncmp(arg, "-_CC=", 5) == 0) {
1390 newae(ctx->i_ae, strchr(arg, '=') + 1);
1391 continue;
1392 }
1393
1394 if (*arg != '-') {
1395 if (!in_output && is_source_file(arg))
1396 c_files++;
1397
1398 if (in_output == 0 || !(ctx->i_flags & CW_F_SHADOW)) {
1399 newae(ctx->i_ae, arg);
1400 } else {
1401 in_output = 0;
1402 newae(ctx->i_ae, discard_file_name(ctx, arg));
1403 }
1404 continue;
1405 }
1406 switch (*(arg + 1)) {
1407 case '_':
1408 if ((strncmp(arg, nameflag, strlen(nameflag)) == 0) ||
1409 (strncmp(arg, "-_cc=", 5) == 0) ||
1410 (strncmp(arg, "-_sun=", 6) == 0)) {
1411 newae(ctx->i_ae, strchr(arg, '=') + 1);
1412 }
1413 break;
1414
1415 case 'V':
1416 ctx->i_flags &= ~CW_F_ECHO;
1417 newae(ctx->i_ae, arg);
1418 break;
1419 case 'o':
1420 seen_o = 1;
1421 if (strlen(arg) == 2) {
1422 in_output = 1;
1423 newae(ctx->i_ae, arg);
1424 } else if (ctx->i_flags & CW_F_SHADOW) {
1425 newae(ctx->i_ae, "-o");
1426 newae(ctx->i_ae, discard_file_name(ctx, arg));
1427 } else {
1428 newae(ctx->i_ae, arg);
1429 }
1430 break;
1431 case 'c':
1432 case 'S':
1433 if (strlen(arg) == 2)
1434 op = CW_O_COMPILE;
1435 newae(ctx->i_ae, arg);
1436 break;
1437 case 'E':
1438 case 'P':
1439 if (strlen(arg) == 2)
1440 op = CW_O_PREPROCESS;
1441 /*FALLTHROUGH*/
1442 default:
1443 newae(ctx->i_ae, arg);
1444 }
1445 }
1446
1447 free(nameflag);
1448
1449 /* See the comment on this same code in do_gcc() */
1450 if (c_files > 1 && op != CW_O_PREPROCESS) {
1451 errx(2, "multiple source files are "
1452 "allowed only with -E or -P");
1453 }
1454
1455 if (ctx->i_flags & CW_F_SHADOW) {
1456 if (op == CW_O_PREPROCESS)
1457 exit(0);
1458 else if (op == CW_O_LINK && c_files == 0)
1459 exit(0);
1460 }
1461
1462 if (!seen_o && (ctx->i_flags & CW_F_SHADOW)) {
1463 newae(ctx->i_ae, "-o");
1464 newae(ctx->i_ae, discard_file_name(ctx, NULL));
1465 }
1466 }
1467
1468 static void
1469 prepctx(cw_ictx_t *ctx)
1470 {
1471 newae(ctx->i_ae, ctx->i_compiler->c_path);
1472
1473 if (ctx->i_flags & CW_F_PROG) {
1474 (void) printf("%s: %s\n", (ctx->i_flags & CW_F_SHADOW) ?
1475 "shadow" : "primary", ctx->i_compiler->c_path);
1476 (void) fflush(stdout);
1477 }
1478
1479 if (!(ctx->i_flags & CW_F_XLATE))
1480 return;
1481
1482 switch (ctx->i_compiler->c_style) {
1483 case SUN:
1484 do_cc(ctx);
1485 break;
1486 case GNU:
1487 do_gcc(ctx);
1488 break;
1489 case SMATCH:
1490 do_smatch(ctx);
1491 break;
1492 }
1493 }
1494
1495 static int
1496 invoke(cw_ictx_t *ctx)
1497 {
1498 char **newargv;
1499 int ac;
1500 struct ae *a;
1501
1502 if ((newargv = calloc(sizeof (*newargv), ctx->i_ae->ael_argc + 1)) ==
1503 NULL)
1504 nomem();
1505
1506 if (ctx->i_flags & CW_F_ECHO)
1507 (void) fprintf(stderr, "+ ");
1508
1509 for (ac = 0, a = ctx->i_ae->ael_head; a; a = a->ae_next, ac++) {
1510 newargv[ac] = a->ae_arg;
1511 if (ctx->i_flags & CW_F_ECHO)
1512 (void) fprintf(stderr, "%s ", a->ae_arg);
1513 if (a == ctx->i_ae->ael_tail)
1514 break;
1515 }
1516
1517 if (ctx->i_flags & CW_F_ECHO) {
1518 (void) fprintf(stderr, "\n");
1519 (void) fflush(stderr);
1520 }
1521
1522 if (!(ctx->i_flags & CW_F_EXEC))
1523 return (0);
1524
1525 /*
1526 * We must fix up the environment here so that the dependency files are
1527 * not trampled by the shadow compiler. Also take care of GCC
1528 * environment variables that will throw off gcc. This assumes a primary
1529 * gcc.
1530 */
1531 if ((ctx->i_flags & CW_F_SHADOW) &&
1532 (unsetenv("SUNPRO_DEPENDENCIES") != 0 ||
1533 unsetenv("DEPENDENCIES_OUTPUT") != 0 ||
1534 unsetenv("GCC_ROOT") != 0)) {
1535 (void) fprintf(stderr, "error: environment setup failed: %s\n",
1536 strerror(errno));
1537 return (-1);
1538 }
1539
1540 (void) execv(newargv[0], newargv);
1541 warn("couldn't run %s", newargv[0]);
1542
1543 return (-1);
1544 }
1545
1546 static int
1547 reap(cw_ictx_t *ctx)
1548 {
1549 int status, ret = 0;
1550 char buf[1024];
1551 struct stat s;
1552
1553 /*
1554 * Only wait for one specific child.
1555 */
1556 if (ctx->i_pid <= 0)
1557 return (-1);
1558
1559 do {
1560 if (waitpid(ctx->i_pid, &status, 0) < 0) {
1561 warn("cannot reap child");
1562 return (-1);
1563 }
1564 if (status != 0) {
1565 if (WIFSIGNALED(status)) {
1566 ret = -WTERMSIG(status);
1567 break;
1568 } else if (WIFEXITED(status)) {
1569 ret = WEXITSTATUS(status);
1570 break;
1571 }
1572 }
1573 } while (!WIFEXITED(status) && !WIFSIGNALED(status));
1574
1575 if (stat(ctx->i_stderr, &s) < 0) {
1576 warn("stat failed on child cleanup");
1577 return (-1);
1578 }
1579 if (s.st_size != 0) {
1580 FILE *f;
1581
1582 if ((f = fopen(ctx->i_stderr, "r")) != NULL) {
1583 while (fgets(buf, sizeof (buf), f))
1584 (void) fprintf(stderr, "%s", buf);
1585 (void) fflush(stderr);
1586 (void) fclose(f);
1587 }
1588 }
1589 (void) unlink(ctx->i_stderr);
1590 free(ctx->i_stderr);
1591
1592 /*
1593 * cc returns an error code when given -V; we want that to succeed.
1594 */
1595 if (ctx->i_flags & CW_F_PROG)
1596 return (0);
1597
1598 return (ret);
1599 }
1600
1601 static int
1602 exec_ctx(cw_ictx_t *ctx, int block)
1603 {
1604 if ((ctx->i_stderr = tempnam(ctx->i_tmpdir, "cw")) == NULL) {
1605 nomem();
1606 return (-1);
1607 }
1608
1609 if ((ctx->i_pid = fork()) == 0) {
1610 int fd;
1611
1612 (void) fclose(stderr);
1613 if ((fd = open(ctx->i_stderr, O_WRONLY | O_CREAT | O_EXCL,
1614 0666)) < 0) {
1615 err(1, "open failed for standard error");
1616 }
1617 if (dup2(fd, 2) < 0) {
1618 err(1, "dup2 failed for standard error");
1619 }
1620 if (fd != 2)
1621 (void) close(fd);
1622 if (freopen("/dev/fd/2", "w", stderr) == NULL) {
1623 err(1, "freopen failed for /dev/fd/2");
1624 }
1625
1626 prepctx(ctx);
1627 exit(invoke(ctx));
1628 }
1629
1630 if (ctx->i_pid < 0) {
1631 err(1, "fork failed");
1632 }
1633
1634 if (block)
1635 return (reap(ctx));
1636
1637 return (0);
1638 }
1639
1640 static void
1641 parse_compiler(const char *spec, cw_compiler_t *compiler)
1642 {
1643 char *tspec, *token;
1644
1645 if ((tspec = strdup(spec)) == NULL)
1646 nomem();
1647
1648 if ((token = strsep(&tspec, ",")) == NULL)
1649 errx(1, "Compiler is missing a name: %s", spec);
1650 compiler->c_name = token;
1651
1652 if ((token = strsep(&tspec, ",")) == NULL)
1653 errx(1, "Compiler is missing a path: %s", spec);
1654 compiler->c_path = token;
1655
1656 if ((token = strsep(&tspec, ",")) == NULL)
1657 errx(1, "Compiler is missing a style: %s", spec);
1658
1659 if ((strcasecmp(token, "gnu") == 0) ||
1660 (strcasecmp(token, "gcc") == 0)) {
1661 compiler->c_style = GNU;
1662 } else if ((strcasecmp(token, "sun") == 0) ||
1663 (strcasecmp(token, "cc") == 0)) {
1664 compiler->c_style = SUN;
1665 } else if ((strcasecmp(token, "smatch") == 0)) {
1666 compiler->c_style = SMATCH;
1667 } else {
1668 errx(1, "unknown compiler style: %s", token);
1669 }
1670
1671 if (tspec != NULL)
1672 errx(1, "Excess tokens in compiler: %s", spec);
1673 }
1674
1675 static void
1676 cleanup(cw_ictx_t *ctx)
1677 {
1678 DIR *dirp;
1679 struct dirent *dp;
1680 char buf[MAXPATHLEN];
1681
1682 if ((dirp = opendir(ctx->i_tmpdir)) == NULL) {
1683 if (errno != ENOENT) {
1684 err(1, "couldn't open temp directory: %s",
1685 ctx->i_tmpdir);
1686 } else {
1687 return;
1688 }
1689 }
1690
1691 errno = 0;
1692 while ((dp = readdir(dirp)) != NULL) {
1693 (void) snprintf(buf, MAXPATHLEN, "%s/%s", ctx->i_tmpdir,
1694 dp->d_name);
1695
1696 if (strcmp(dp->d_name, ".") == 0 ||
1697 strcmp(dp->d_name, "..") == 0) {
1698 continue;
1699 }
1700
1701 if (unlink(buf) == -1)
1702 err(1, "failed to unlink temp file: %s", dp->d_name);
1703 errno = 0;
1704 }
1705
1706 if (errno != 0) {
1707 err(1, "failed to read temporary directory: %s",
1708 ctx->i_tmpdir);
1709 }
1710
1711 (void) closedir(dirp);
1712 if (rmdir(ctx->i_tmpdir) != 0) {
1713 err(1, "failed to unlink temporary directory: %s",
1714 ctx->i_tmpdir);
1715 }
1716 }
1717
1718 int
1719 main(int argc, char **argv)
1720 {
1721 int ch;
1722 cw_compiler_t primary = { NULL, NULL, 0 };
1723 cw_compiler_t shadows[10];
1724 int nshadows = 0;
1725 int ret = 0;
1726 boolean_t do_serial = B_FALSE;
1727 boolean_t do_exec = B_FALSE;
1728 boolean_t vflg = B_FALSE;
1729 boolean_t Cflg = B_FALSE;
1730 boolean_t cflg = B_FALSE;
1731 boolean_t nflg = B_FALSE;
1732 char *tmpdir;
1733
1734 cw_ictx_t *main_ctx;
1735
1736 static struct option longopts[] = {
1737 { "compiler", no_argument, NULL, 'c' },
1738 { "noecho", no_argument, NULL, 'n' },
1739 { "primary", required_argument, NULL, 'p' },
1740 { "shadow", required_argument, NULL, 's' },
1741 { "versions", no_argument, NULL, 'v' },
1742 { NULL, 0, NULL, 0 },
1743 };
1744
1745
1746 if ((main_ctx = newictx()) == NULL)
1747 nomem();
1748
1749 while ((ch = getopt_long(argc, argv, "C", longopts, NULL)) != -1) {
1750 switch (ch) {
1751 case 'c':
1752 cflg = B_TRUE;
1753 break;
1754 case 'C':
1755 Cflg = B_TRUE;
1756 break;
1757 case 'n':
1758 nflg = B_TRUE;
1759 break;
1760 case 'p':
1761 if (primary.c_path != NULL) {
1762 warnx("Only one primary compiler may "
1763 "be specified");
1764 usage();
1765 }
1766
1767 parse_compiler(optarg, &primary);
1768 break;
1769 case 's':
1770 if (nshadows >= 10)
1771 errx(1, "May only use 10 shadows at "
1772 "the moment");
1773 parse_compiler(optarg, &shadows[nshadows]);
1774 nshadows++;
1775 break;
1776 case 'v':
1777 vflg = B_TRUE;
1778 break;
1779 default:
1780 (void) fprintf(stderr, "Did you forget '--'?\n");
1781 usage();
1782 }
1783 }
1784
1785 if (primary.c_path == NULL) {
1786 warnx("A primary compiler must be specified");
1787 usage();
1788 }
1789
1790 do_serial = (getenv("CW_SHADOW_SERIAL") == NULL) ? B_FALSE : B_TRUE;
1791 do_exec = (getenv("CW_NO_EXEC") == NULL) ? B_TRUE : B_FALSE;
1792
1793 /* Leave room for argv[0] */
1794 argc -= (optind - 1);
1795 argv += (optind - 1);
1796
1797 main_ctx->i_oldargc = argc;
1798 main_ctx->i_oldargv = argv;
1799 main_ctx->i_flags = CW_F_XLATE;
1800 if (nflg == 0)
1801 main_ctx->i_flags |= CW_F_ECHO;
1802 if (do_exec)
1803 main_ctx->i_flags |= CW_F_EXEC;
1804 if (Cflg)
1805 main_ctx->i_flags |= CW_F_CXX;
1806 main_ctx->i_compiler = &primary;
1807
1808 if (cflg) {
1809 (void) fputs(primary.c_path, stdout);
1810 }
1811
1812 if (vflg) {
1813 (void) printf("cw version %s\n", CW_VERSION);
1814 (void) fflush(stdout);
1815 main_ctx->i_flags &= ~CW_F_ECHO;
1816 main_ctx->i_flags |= CW_F_PROG | CW_F_EXEC;
1817 do_serial = 1;
1818 }
1819
1820 tmpdir = getenv("TMPDIR");
1821 if (tmpdir == NULL)
1822 tmpdir = "/tmp";
1823
1824 if (asprintf(&main_ctx->i_tmpdir, "%s/cw.XXXXXX", tmpdir) == -1)
1825 nomem();
1826
1827 if ((main_ctx->i_tmpdir = mkdtemp(main_ctx->i_tmpdir)) == NULL)
1828 errx(1, "failed to create temporary directory");
1829
1830 ret |= exec_ctx(main_ctx, do_serial);
1831
1832 for (int i = 0; i < nshadows; i++) {
1833 int r;
1834 cw_ictx_t *shadow_ctx;
1835
1836 if ((shadow_ctx = newictx()) == NULL)
1837 nomem();
1838
1839 (void) memcpy(shadow_ctx, main_ctx, sizeof (cw_ictx_t));
1840
1841 shadow_ctx->i_flags |= CW_F_SHADOW;
1842 shadow_ctx->i_compiler = &shadows[i];
1843
1844 r = exec_ctx(shadow_ctx, do_serial);
1845 if (r == 0) {
1846 shadow_ctx->i_next = main_ctx->i_next;
1847 main_ctx->i_next = shadow_ctx;
1848 }
1849 ret |= r;
1850 }
1851
1852 if (!do_serial) {
1853 cw_ictx_t *next = main_ctx;
1854 while (next != NULL) {
1855 cw_ictx_t *toreap = next;
1856 next = next->i_next;
1857 ret |= reap(toreap);
1858 }
1859 }
1860
1861 cleanup(main_ctx);
1862 return (ret);
1863 }