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      "4.0"
  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  * -xcrossfile[=<n>]              ignore
 221  * -xe                          error
 222  * -xF                          error
 223  * -xhelp=<f>                     error
 224  * -xildoff                     ignore
 225  * -xildon                      ignore
 226  * -xinline                     ignore
 227  * -xlibmieee                   error
 228  * -xlibmil                     error
 229  * -xlic_lib=sunperf            error
 230  * -xmaxopt=[...]               error
 231  * -xO<n>                 -O<n>
 232  * -xP                          error
 233  * -xprofile=<p>          error
 234  * -xregs=<r>                     table
 235  * -xs                          error
 236  * -xsb                         error
 237  * -xsbfast                     error
 238  * -xsfpconst                   error
 239  * -xspace                      ignore (-not -Os)
 240  * -xstrconst                   ignore
 241  * -xtarget=<t>                   table
 242  * -xtemp=<dir>                   error
 243  * -xtime                       error
 244  * -xtransition                 -Wtransition
 245  * -xunroll=n                   error
 246  * -W0,-xdbggen=no%usedonly     -fno-eliminate-unused-debug-symbols
 247  *                              -fno-eliminate-unused-debug-types
 248  * -Y<c>,<dir>                      error
 249  * -YA,<dir>                      error
 250  * -YI,<dir>                      -nostdinc -I<dir>
 251  * -YP,<dir>                      error
 252  * -YS,<dir>                      error
 253  */
 254 
 255 #include <ctype.h>
 256 #include <err.h>
 257 #include <errno.h>
 258 #include <fcntl.h>
 259 #include <getopt.h>
 260 #include <stdio.h>
 261 #include <stdlib.h>
 262 #include <string.h>
 263 #include <unistd.h>
 264 #include <dirent.h>
 265 
 266 #include <sys/param.h>
 267 #include <sys/stat.h>
 268 #include <sys/types.h>
 269 #include <sys/utsname.h>
 270 #include <sys/wait.h>
 271 
 272 #define CW_F_CXX        0x01
 273 #define CW_F_SHADOW     0x02
 274 #define CW_F_EXEC       0x04
 275 #define CW_F_ECHO       0x08
 276 #define CW_F_XLATE      0x10
 277 #define CW_F_PROG       0x20
 278 
 279 typedef enum cw_op {
 280         CW_O_NONE = 0,
 281         CW_O_PREPROCESS,
 282         CW_O_COMPILE,
 283         CW_O_LINK
 284 } cw_op_t;
 285 
 286 struct aelist {
 287         struct ae {
 288                 struct ae *ae_next;
 289                 char *ae_arg;
 290         } *ael_head, *ael_tail;
 291         int ael_argc;
 292 };
 293 
 294 typedef enum {
 295         GNU,
 296         SUN,
 297         SMATCH
 298 } compiler_style_t;
 299 
 300 typedef struct {
 301         char *c_name;
 302         char *c_path;
 303         compiler_style_t c_style;
 304 } cw_compiler_t;
 305 
 306 typedef struct cw_ictx {
 307         struct cw_ictx  *i_next;
 308         cw_compiler_t   *i_compiler;
 309         struct aelist   *i_ae;
 310         uint32_t        i_flags;
 311         int             i_oldargc;
 312         char            **i_oldargv;
 313         pid_t           i_pid;
 314         char            *i_tmpdir;
 315         char            *i_stderr;
 316 } cw_ictx_t;
 317 
 318 /*
 319  * Status values to indicate which Studio compiler and associated
 320  * flags are being used.
 321  */
 322 #define M32             0x01    /* -m32 - only on Studio 12 */
 323 #define M64             0x02    /* -m64 - only on Studio 12 */
 324 #define SS11            0x100   /* Studio 11 */
 325 #define SS12            0x200   /* Studio 12 */
 326 
 327 #define TRANS_ENTRY     5
 328 /*
 329  * Translation table definition for the -xarch= flag. The "x_arg"
 330  * value is translated into the appropriate gcc flags according
 331  * to the values in x_trans[n]. The x_flags indicates what compiler
 332  * is being used and what flags have been set via the use of
 333  * "x_arg".
 334  */
 335 typedef struct xarch_table {
 336         char    *x_arg;
 337         int     x_flags;
 338         char    *x_trans[TRANS_ENTRY];
 339 } xarch_table_t;
 340 
 341 /*
 342  * The translation table for the -xarch= flag used in the Studio compilers.
 343  */
 344 static const xarch_table_t xtbl[] = {
 345 #if defined(__x86)
 346         { "generic",    SS11, {NULL} },
 347         { "generic64",  (SS11|M64), { "-m64", "-mtune=opteron" } },
 348         { "amd64",      (SS11|M64), { "-m64", "-mtune=opteron" } },
 349         { "386",        SS11,   { "-march=i386" } },
 350         { "pentium_pro", SS11,  { "-march=pentiumpro" } },
 351         { "sse",        SS11, { "-msse", "-mfpmath=sse" } },
 352         { "sse2",       SS11, { "-msse2", "-mfpmath=sse" } },
 353 #elif defined(__sparc)
 354         { "generic",    (SS11|M32), { "-m32", "-mcpu=v8" } },
 355         { "generic64",  (SS11|M64), { "-m64", "-mcpu=v9" } },
 356         { "v8",         (SS11|M32), { "-m32", "-mcpu=v8", "-mno-v8plus" } },
 357         { "v8plus",     (SS11|M32), { "-m32", "-mcpu=v9", "-mv8plus" } },
 358         { "v8plusa",    (SS11|M32), { "-m32", "-mcpu=ultrasparc", "-mv8plus",
 359                         "-mvis" } },
 360         { "v8plusb",    (SS11|M32), { "-m32", "-mcpu=ultrasparc3", "-mv8plus",
 361                         "-mvis" } },
 362         { "v9",         (SS11|M64), { "-m64", "-mcpu=v9" } },
 363         { "v9a",        (SS11|M64), { "-m64", "-mcpu=ultrasparc", "-mvis" } },
 364         { "v9b",        (SS11|M64), { "-m64", "-mcpu=ultrasparc3", "-mvis" } },
 365         { "sparc",      SS12, { "-mcpu=v9", "-mv8plus" } },
 366         { "sparcvis",   SS12, { "-mcpu=ultrasparc", "-mvis" } },
 367         { "sparcvis2",  SS12, { "-mcpu=ultrasparc3", "-mvis" } }
 368 #endif
 369 };
 370 
 371 static int xtbl_size = sizeof (xtbl) / sizeof (xarch_table_t);
 372 
 373 static const char *xchip_tbl[] = {
 374 #if defined(__x86)
 375         "386",          "-mtune=i386", NULL,
 376         "486",          "-mtune=i486", NULL,
 377         "pentium",      "-mtune=pentium", NULL,
 378         "pentium_pro",  "-mtune=pentiumpro", NULL,
 379 #elif defined(__sparc)
 380         "super",        "-mtune=supersparc", NULL,
 381         "ultra",        "-mtune=ultrasparc", NULL,
 382         "ultra3",       "-mtune=ultrasparc3", NULL,
 383 #endif
 384         NULL,           NULL
 385 };
 386 
 387 static const char *xcode_tbl[] = {
 388 #if defined(__sparc)
 389         "abs32",        "-fno-pic", "-mcmodel=medlow", NULL,
 390         "abs44",        "-fno-pic", "-mcmodel=medmid", NULL,
 391         "abs64",        "-fno-pic", "-mcmodel=medany", NULL,
 392         "pic13",        "-fpic", NULL,
 393         "pic32",        "-fPIC", NULL,
 394 #endif
 395         NULL,           NULL
 396 };
 397 
 398 static const char *xtarget_tbl[] = {
 399 #if defined(__x86)
 400         "pentium_pro",  "-march=pentiumpro", NULL,
 401 #endif  /* __x86 */
 402         NULL,           NULL
 403 };
 404 
 405 static const char *xregs_tbl[] = {
 406 #if defined(__sparc)
 407         "appl",         "-mapp-regs", NULL,
 408         "no%appl",      "-mno-app-regs", NULL,
 409         "float",        "-mfpu", NULL,
 410         "no%float",     "-mno-fpu", NULL,
 411 #endif  /* __sparc */
 412         NULL,           NULL
 413 };
 414 
 415 static void
 416 nomem(void)
 417 {
 418         errx(1, "out of memory");
 419 }
 420 
 421 static void
 422 newae(struct aelist *ael, const char *arg)
 423 {
 424         struct ae *ae;
 425 
 426         if ((ae = calloc(sizeof (*ae), 1)) == NULL)
 427                 nomem();
 428         ae->ae_arg = strdup(arg);
 429         if (ael->ael_tail == NULL)
 430                 ael->ael_head = ae;
 431         else
 432                 ael->ael_tail->ae_next = ae;
 433         ael->ael_tail = ae;
 434         ael->ael_argc++;
 435 }
 436 
 437 static cw_ictx_t *
 438 newictx(void)
 439 {
 440         cw_ictx_t *ctx = calloc(sizeof (cw_ictx_t), 1);
 441         if (ctx)
 442                 if ((ctx->i_ae = calloc(sizeof (struct aelist), 1)) == NULL) {
 443                         free(ctx);
 444                         return (NULL);
 445                 }
 446 
 447         return (ctx);
 448 }
 449 
 450 static void
 451 error(const char *arg)
 452 {
 453         errx(2, "error: mapping failed at or near arg '%s'", arg);
 454 }
 455 
 456 /*
 457  * Add the current favourite set of warnings to the gcc invocation.
 458  */
 459 static void
 460 warnings(struct aelist *h)
 461 {
 462         static int warningsonce;
 463 
 464         if (warningsonce++)
 465                 return;
 466 
 467         /*
 468          * Enable as many warnings as exist, then disable those that we never
 469          * ever want.
 470          */
 471         newae(h, "-Wall");
 472         newae(h, "-Wextra");
 473 }
 474 
 475 static void
 476 optim_disable(struct aelist *h, int level)
 477 {
 478         if (level >= 2) {
 479                 newae(h, "-fno-strict-aliasing");
 480                 newae(h, "-fno-unit-at-a-time");
 481                 newae(h, "-fno-optimize-sibling-calls");
 482         }
 483 }
 484 
 485 static void
 486 Xsmode(struct aelist *h)
 487 {
 488         static int xsonce;
 489 
 490         if (xsonce++)
 491                 return;
 492 
 493         newae(h, "-traditional");
 494         newae(h, "-traditional-cpp");
 495 }
 496 
 497 static void
 498 usage()
 499 {
 500         extern char *__progname;
 501         (void) fprintf(stderr,
 502             "usage: %s [-C] [--versions] --primary <compiler> "
 503             "[--shadow <compiler>]... -- cflags...\n",
 504             __progname);
 505         (void) fprintf(stderr, "compilers take the form: name,path,style\n"
 506             " - name: a unique name usable in flag specifiers\n"
 507             " - path: path to the compiler binary\n"
 508             " - style: the style of flags expected: either sun or gnu\n");
 509         exit(2);
 510 }
 511 
 512 static int
 513 xlate_xtb(struct aelist *h, const char *xarg)
 514 {
 515         int     i, j;
 516 
 517         for (i = 0; i < xtbl_size; i++) {
 518                 if (strcmp(xtbl[i].x_arg, xarg) == 0)
 519                         break;
 520         }
 521 
 522         /*
 523          * At the end of the table and so no matching "arg" entry
 524          * found and so this must be a bad -xarch= flag.
 525          */
 526         if (i == xtbl_size)
 527                 error(xarg);
 528 
 529         for (j = 0; j < TRANS_ENTRY; j++) {
 530                 if (xtbl[i].x_trans[j] != NULL)
 531                         newae(h, xtbl[i].x_trans[j]);
 532                 else
 533                         break;
 534         }
 535         return (xtbl[i].x_flags);
 536 
 537 }
 538 
 539 static void
 540 xlate(struct aelist *h, const char *xarg, const char **table)
 541 {
 542         while (*table != NULL && strcmp(xarg, *table) != 0) {
 543                 while (*table != NULL)
 544                         table++;
 545                 table++;
 546         }
 547 
 548         if (*table == NULL)
 549                 error(xarg);
 550 
 551         table++;
 552 
 553         while (*table != NULL) {
 554                 newae(h, *table);
 555                 table++;
 556         }
 557 }
 558 
 559 /*
 560  * The compiler wants the output file to end in appropriate extension.  If
 561  * we're generating a name from whole cloth (path == NULL), we assume that
 562  * extension to be .o, otherwise we match the extension of the caller.
 563  */
 564 static char *
 565 discard_file_name(cw_ictx_t *ctx, const char *path)
 566 {
 567         char *ret, *ext;
 568         char tmpl[] = "cwXXXXXX";
 569 
 570         if (path == NULL) {
 571                 ext = ".o";
 572         } else {
 573                 ext = strrchr(path, '.');
 574         }
 575 
 576         /*
 577          * We need absolute control over where the temporary file goes, since
 578          * we rely on it for cleanup so tempnam(3C) and tmpnam(3C) are
 579          * inappropriate (they use TMPDIR, preferentially).
 580          *
 581          * mkstemp(3C) doesn't actually help us, since the temporary file
 582          * isn't used by us, only its name.
 583          */
 584         if (mktemp(tmpl) == NULL)
 585                 nomem();
 586 
 587         (void) asprintf(&ret, "%s/%s%s", ctx->i_tmpdir, tmpl,
 588             (ext != NULL) ? ext : "");
 589 
 590         if (ret == NULL)
 591                 nomem();
 592 
 593         return (ret);
 594 }
 595 
 596 static boolean_t
 597 is_source_file(const char *path)
 598 {
 599         char *ext = strrchr(path, '.');
 600 
 601         if ((ext == NULL) || ((ext + 1) == '\0'))
 602                 return (B_FALSE);
 603 
 604         ext += 1;
 605 
 606         if ((strcasecmp(ext, "c") == 0) ||
 607             (strcmp(ext, "cc") == 0) ||
 608             (strcmp(ext, "i") == 0) ||
 609             (strcasecmp(ext, "s") == 0) ||
 610             (strcmp(ext, "cpp") == 0)) {
 611                 return (B_TRUE);
 612         }
 613 
 614         return (B_FALSE);
 615 }
 616 
 617 
 618 static void
 619 do_gcc(cw_ictx_t *ctx)
 620 {
 621         int c;
 622         int nolibc = 0;
 623         int in_output = 0, seen_o = 0, c_files = 0;
 624         cw_op_t op = CW_O_LINK;
 625         char *model = NULL;
 626         char *nameflag;
 627         int mflag = 0;
 628 
 629         if (ctx->i_flags & CW_F_PROG) {
 630                 newae(ctx->i_ae, "--version");
 631                 return;
 632         }
 633 
 634         newae(ctx->i_ae, "-fident");
 635         newae(ctx->i_ae, "-finline");
 636         newae(ctx->i_ae, "-fno-inline-functions");
 637         newae(ctx->i_ae, "-fno-builtin");
 638         newae(ctx->i_ae, "-fno-asm");
 639         newae(ctx->i_ae, "-fdiagnostics-show-option");
 640         newae(ctx->i_ae, "-nodefaultlibs");
 641 
 642 #if defined(__sparc)
 643         /*
 644          * The SPARC ldd and std instructions require 8-byte alignment of
 645          * their address operand.  gcc correctly uses them only when the
 646          * ABI requires 8-byte alignment; unfortunately we have a number of
 647          * pieces of buggy code that doesn't conform to the ABI.  This
 648          * flag makes gcc work more like Studio with -xmemalign=4.
 649          */
 650         newae(ctx->i_ae, "-mno-integer-ldd-std");
 651 #endif
 652 
 653         /*
 654          * This is needed because 'u' is defined
 655          * under a conditional on 'sun'.  Should
 656          * probably just remove the conditional,
 657          * or make it be dependent on '__sun'.
 658          *
 659          * -Dunix is also missing in enhanced ANSI mode
 660          */
 661         newae(ctx->i_ae, "-D__sun");
 662 
 663         if (asprintf(&nameflag, "-_%s=", ctx->i_compiler->c_name) == -1)
 664                 nomem();
 665 
 666         /*
 667          * Walk the argument list, translating as we go ..
 668          */
 669         while (--ctx->i_oldargc > 0) {
 670                 char *arg = *++ctx->i_oldargv;
 671                 size_t arglen = strlen(arg);
 672 
 673                 if (*arg == '-') {
 674                         arglen--;
 675                 } else {
 676                         /*
 677                          * Discard inline files that gcc doesn't grok
 678                          */
 679                         if (!in_output && arglen > 3 &&
 680                             strcmp(arg + arglen - 3, ".il") == 0)
 681                                 continue;
 682 
 683                         if (!in_output && is_source_file(arg))
 684                                 c_files++;
 685 
 686                         /*
 687                          * Otherwise, filenames and partial arguments
 688                          * are passed through for gcc to chew on.  However,
 689                          * output is always discarded for the secondary
 690                          * compiler.
 691                          */
 692                         if ((ctx->i_flags & CW_F_SHADOW) && in_output) {
 693                                 newae(ctx->i_ae, discard_file_name(ctx, arg));
 694                         } else {
 695                                 newae(ctx->i_ae, arg);
 696                         }
 697                         in_output = 0;
 698                         continue;
 699                 }
 700 
 701                 if (ctx->i_flags & CW_F_CXX) {
 702                         if (strncmp(arg, "-_g++=", 6) == 0) {
 703                                 newae(ctx->i_ae, strchr(arg, '=') + 1);
 704                                 continue;
 705                         }
 706                         if (strncmp(arg, "-compat=", 8) == 0) {
 707                                 /* discard -compat=4 and -compat=5 */
 708                                 continue;
 709                         }
 710                         if (strcmp(arg, "-Qoption") == 0) {
 711                                 /* discard -Qoption and its two arguments */
 712                                 if (ctx->i_oldargc < 3)
 713                                         error(arg);
 714                                 ctx->i_oldargc -= 2;
 715                                 ctx->i_oldargv += 2;
 716                                 continue;
 717                         }
 718                         if (strcmp(arg, "-xwe") == 0) {
 719                                 /* turn warnings into errors */
 720                                 newae(ctx->i_ae, "-Werror");
 721                                 continue;
 722                         }
 723                         if (strcmp(arg, "-norunpath") == 0) {
 724                                 /* gcc has no corresponding option */
 725                                 continue;
 726                         }
 727                         if (strcmp(arg, "-nolib") == 0) {
 728                                 /* -nodefaultlibs is on by default */
 729                                 nolibc = 1;
 730                                 continue;
 731                         }
 732 #if defined(__sparc)
 733                         if (strcmp(arg, "-cg92") == 0) {
 734                                 mflag |= xlate_xtb(ctx->i_ae, "v8");
 735                                 xlate(ctx->i_ae, "super", xchip_tbl);
 736                                 continue;
 737                         }
 738 #endif  /* __sparc */
 739                 }
 740 
 741                 switch ((c = arg[1])) {
 742                 case '_':
 743                         if ((strncmp(arg, nameflag, strlen(nameflag)) == 0) ||
 744                             (strncmp(arg, "-_gcc=", 6) == 0) ||
 745                             (strncmp(arg, "-_gnu=", 6) == 0)) {
 746                                 newae(ctx->i_ae, strchr(arg, '=') + 1);
 747                         }
 748                         break;
 749                 case '#':
 750                         if (arglen == 1) {
 751                                 newae(ctx->i_ae, "-v");
 752                                 break;
 753                         }
 754                         error(arg);
 755                         break;
 756                 case 'f':
 757                         if ((strcmp(arg, "-fpic") == 0) ||
 758                             (strcmp(arg, "-fPIC") == 0)) {
 759                                 newae(ctx->i_ae, arg);
 760                                 break;
 761                         }
 762                         error(arg);
 763                         break;
 764                 case 'E':
 765                         if (arglen == 1) {
 766                                 newae(ctx->i_ae, "-xc");
 767                                 newae(ctx->i_ae, arg);
 768                                 op = CW_O_PREPROCESS;
 769                                 nolibc = 1;
 770                                 break;
 771                         }
 772                         error(arg);
 773                         break;
 774                 case 'c':
 775                 case 'S':
 776                         if (arglen == 1) {
 777                                 op = CW_O_COMPILE;
 778                                 nolibc = 1;
 779                         }
 780                         /* FALLTHROUGH */
 781                 case 'C':
 782                 case 'H':
 783                 case 'p':
 784                         if (arglen == 1) {
 785                                 newae(ctx->i_ae, arg);
 786                                 break;
 787                         }
 788                         error(arg);
 789                         break;
 790                 case 'A':
 791                 case 'g':
 792                 case 'h':
 793                 case 'I':
 794                 case 'i':
 795                 case 'L':
 796                 case 'l':
 797                 case 'R':
 798                 case 'U':
 799                 case 'u':
 800                 case 'w':
 801                         newae(ctx->i_ae, arg);
 802                         break;
 803                 case 'o':
 804                         seen_o = 1;
 805                         if (arglen == 1) {
 806                                 in_output = 1;
 807                                 newae(ctx->i_ae, arg);
 808                         } else if (ctx->i_flags & CW_F_SHADOW) {
 809                                 newae(ctx->i_ae, "-o");
 810                                 newae(ctx->i_ae, discard_file_name(ctx, arg));
 811                         } else {
 812                                 newae(ctx->i_ae, arg);
 813                         }
 814                         break;
 815                 case 'D':
 816                         newae(ctx->i_ae, arg);
 817                         /*
 818                          * XXX  Clearly a hack ... do we need _KADB too?
 819                          */
 820                         if (strcmp(arg, "-D_KERNEL") == 0 ||
 821                             strcmp(arg, "-D_BOOT") == 0)
 822                                 newae(ctx->i_ae, "-ffreestanding");
 823                         break;
 824                 case 'd':
 825                         if (arglen == 2) {
 826                                 if (strcmp(arg, "-dy") == 0) {
 827                                         newae(ctx->i_ae, "-Wl,-dy");
 828                                         break;
 829                                 }
 830                                 if (strcmp(arg, "-dn") == 0) {
 831                                         newae(ctx->i_ae, "-Wl,-dn");
 832                                         break;
 833                                 }
 834                         }
 835                         if (strcmp(arg, "-dalign") == 0) {
 836                                 /*
 837                                  * -dalign forces alignment in some cases;
 838                                  * gcc does not need any flag to do this.
 839                                  */
 840                                 break;
 841                         }
 842                         error(arg);
 843                         break;
 844                 case 'e':
 845                         if (strcmp(arg,
 846                             "-erroff=E_EMPTY_TRANSLATION_UNIT") == 0) {
 847                                 /*
 848                                  * Accept but ignore this -- gcc doesn't
 849                                  * seem to complain about empty translation
 850                                  * units
 851                                  */
 852                                 break;
 853                         }
 854                         /* XX64 -- ignore all -erroff= options, for now */
 855                         if (strncmp(arg, "-erroff=", 8) == 0)
 856                                 break;
 857                         if (strcmp(arg, "-errtags=yes") == 0) {
 858                                 warnings(ctx->i_ae);
 859                                 break;
 860                         }
 861                         if (strcmp(arg, "-errwarn=%all") == 0) {
 862                                 newae(ctx->i_ae, "-Werror");
 863                                 break;
 864                         }
 865                         error(arg);
 866                         break;
 867                 case 'G':
 868                         newae(ctx->i_ae, "-shared");
 869                         nolibc = 1;
 870                         break;
 871                 case 'k':
 872                         if (strcmp(arg, "-keeptmp") == 0) {
 873                                 newae(ctx->i_ae, "-save-temps");
 874                                 break;
 875                         }
 876                         error(arg);
 877                         break;
 878                 case 'm':
 879                         if (strcmp(arg, "-mt") == 0) {
 880                                 newae(ctx->i_ae, "-D_REENTRANT");
 881                                 break;
 882                         }
 883                         if (strcmp(arg, "-m64") == 0) {
 884                                 newae(ctx->i_ae, "-m64");
 885 #if defined(__x86)
 886                                 newae(ctx->i_ae, "-mtune=opteron");
 887 #endif
 888                                 mflag |= M64;
 889                                 break;
 890                         }
 891                         if (strcmp(arg, "-m32") == 0) {
 892                                 newae(ctx->i_ae, "-m32");
 893                                 mflag |= M32;
 894                                 break;
 895                         }
 896                         error(arg);
 897                         break;
 898                 case 'B':       /* linker options */
 899                 case 'M':
 900                 case 'z':
 901                         {
 902                                 char *opt;
 903                                 size_t len;
 904                                 char *s;
 905 
 906                                 if (arglen == 1) {
 907                                         opt = *++ctx->i_oldargv;
 908                                         if (opt == NULL || *opt == '\0')
 909                                                 error(arg);
 910                                         ctx->i_oldargc--;
 911                                 } else {
 912                                         opt = arg + 2;
 913                                 }
 914                                 len = strlen(opt) + 7;
 915                                 if ((s = malloc(len)) == NULL)
 916                                         nomem();
 917                                 (void) snprintf(s, len, "-Wl,-%c%s", c, opt);
 918                                 newae(ctx->i_ae, s);
 919                                 free(s);
 920                         }
 921                         break;
 922                 case 'O':
 923                         if (arglen == 1) {
 924                                 newae(ctx->i_ae, "-O");
 925                                 break;
 926                         }
 927                         error(arg);
 928                         break;
 929                 case 'P':
 930                         /*
 931                          * We could do '-E -o filename.i', but that's hard,
 932                          * and we don't need it for the case that's triggering
 933                          * this addition.  We'll require the user to specify
 934                          * -o in the Makefile.  If they don't they'll find out
 935                          * in a hurry.
 936                          */
 937                         newae(ctx->i_ae, "-E");
 938                         op = CW_O_PREPROCESS;
 939                         nolibc = 1;
 940                         break;
 941                 case 's':
 942                         if (arglen == 1) {
 943                                 newae(ctx->i_ae, "-Wl,-s");
 944                                 break;
 945                         }
 946                         error(arg);
 947                         break;
 948                 case 't':
 949                         if (arglen == 1) {
 950                                 newae(ctx->i_ae, "-Wl,-t");
 951                                 break;
 952                         }
 953                         error(arg);
 954                         break;
 955                 case 'V':
 956                         if (arglen == 1) {
 957                                 ctx->i_flags &= ~CW_F_ECHO;
 958                                 newae(ctx->i_ae, "--version");
 959                                 break;
 960                         }
 961                         error(arg);
 962                         break;
 963                 case 'v':
 964                         if (arglen == 1) {
 965                                 warnings(ctx->i_ae);
 966                                 break;
 967                         }
 968                         error(arg);
 969                         break;
 970                 case 'W':
 971                         if (strncmp(arg, "-Wp,-xc99", 9) == 0) {
 972                                 /*
 973                                  * gcc's preprocessor will accept c99
 974                                  * regardless, so accept and ignore.
 975                                  */
 976                                 break;
 977                         }
 978                         if (strncmp(arg, "-Wa,", 4) == 0 ||
 979                             strncmp(arg, "-Wp,", 4) == 0 ||
 980                             strncmp(arg, "-Wl,", 4) == 0) {
 981                                 newae(ctx->i_ae, arg);
 982                                 break;
 983                         }
 984                         if (strcmp(arg, "-W0,-noglobal") == 0 ||
 985                             strcmp(arg, "-W0,-xglobalstatic") == 0) {
 986                                 /*
 987                                  * gcc doesn't prefix local symbols
 988                                  * in debug mode, so this is not needed.
 989                                  */
 990                                 break;
 991                         }
 992                         if (strcmp(arg, "-W0,-Lt") == 0) {
 993                                 /*
 994                                  * Generate tests at the top of loops.
 995                                  * There is no direct gcc equivalent, ignore.
 996                                  */
 997                                 break;
 998                         }
 999                         if (strcmp(arg, "-W0,-xdbggen=no%usedonly") == 0) {
1000                                 newae(ctx->i_ae,
1001                                     "-fno-eliminate-unused-debug-symbols");
1002                                 newae(ctx->i_ae,
1003                                     "-fno-eliminate-unused-debug-types");
1004                                 break;
1005                         }
1006                         if (strcmp(arg, "-W2,-xwrap_int") == 0) {
1007                                 /*
1008                                  * Use the legacy behaviour (pre-SS11)
1009                                  * for integer wrapping.
1010                                  * gcc does not need this.
1011                                  */
1012                                 break;
1013                         }
1014                         if (strcmp(arg, "-Wd,-xsafe=unboundsym") == 0) {
1015                                 /*
1016                                  * Prevents optimizing away checks for
1017                                  * unbound weak symbol addresses.  gcc does
1018                                  * not do this, so it's not needed.
1019                                  */
1020                                 break;
1021                         }
1022                         if (strncmp(arg, "-Wc,-xcode=", 11) == 0) {
1023                                 xlate(ctx->i_ae, arg + 11, xcode_tbl);
1024                                 break;
1025                         }
1026                         if (strncmp(arg, "-Wc,-Qiselect", 13) == 0) {
1027                                 /*
1028                                  * Prevents insertion of register symbols.
1029                                  * gcc doesn't do this, so ignore it.
1030                                  */
1031                                 break;
1032                         }
1033                         if (strcmp(arg, "-Wc,-Qassembler-ounrefsym=0") == 0) {
1034                                 /*
1035                                  * Prevents optimizing away of static variables.
1036                                  * gcc does not do this, so it's not needed.
1037                                  */
1038                                 break;
1039                         }
1040 #if defined(__x86)
1041                         if (strcmp(arg, "-Wu,-save_args") == 0) {
1042                                 newae(ctx->i_ae, "-msave-args");
1043                                 break;
1044                         }
1045 #endif  /* __x86 */
1046                         error(arg);
1047                         break;
1048                 case 'X':
1049                         if (strcmp(arg, "-Xa") == 0 ||
1050                             strcmp(arg, "-Xt") == 0) {
1051                                 break;
1052                         }
1053                         if (strcmp(arg, "-Xs") == 0) {
1054                                 Xsmode(ctx->i_ae);
1055                                 break;
1056                         }
1057                         error(arg);
1058                         break;
1059                 case 'x':
1060                         if (arglen == 1)
1061                                 error(arg);
1062                         switch (arg[2]) {
1063                         case 'a':
1064                                 if (strncmp(arg, "-xarch=", 7) == 0) {
1065                                         mflag |= xlate_xtb(ctx->i_ae, arg + 7);
1066                                         break;
1067                                 }
1068                                 error(arg);
1069                                 break;
1070                         case 'b':
1071                                 if (strncmp(arg, "-xbuiltin=", 10) == 0) {
1072                                         if (strcmp(arg + 10, "%all"))
1073                                                 newae(ctx->i_ae, "-fbuiltin");
1074                                         break;
1075                                 }
1076                                 error(arg);
1077                                 break;
1078                         case 'C':
1079                                 /* Accept C++ style comments -- ignore */
1080                                 if (strcmp(arg, "-xCC") == 0)
1081                                         break;
1082                                 error(arg);
1083                                 break;
1084                         case 'c':
1085                                 if (strncmp(arg, "-xc99=%all", 10) == 0) {
1086                                         newae(ctx->i_ae, "-std=gnu99");
1087                                         break;
1088                                 }
1089                                 if (strncmp(arg, "-xc99=%none", 11) == 0) {
1090                                         newae(ctx->i_ae, "-std=gnu89");
1091                                         break;
1092                                 }
1093                                 if (strncmp(arg, "-xchip=", 7) == 0) {
1094                                         xlate(ctx->i_ae, arg + 7, xchip_tbl);
1095                                         break;
1096                                 }
1097                                 if (strncmp(arg, "-xcode=", 7) == 0) {
1098                                         xlate(ctx->i_ae, arg + 7, xcode_tbl);
1099                                         break;
1100                                 }
1101                                 if (strncmp(arg, "-xcrossfile", 11) == 0)
1102                                         break;
1103                                 error(arg);
1104                                 break;
1105                         case 'F':
1106                                 /*
1107                                  * Compile for mapfile reordering, or unused
1108                                  * section elimination, syntax can be -xF or
1109                                  * more complex, like -xF=%all -- ignore.
1110                                  */
1111                                 if (strncmp(arg, "-xF", 3) == 0)
1112                                         break;
1113                                 error(arg);
1114                                 break;
1115                         case 'i':
1116                                 if (strncmp(arg, "-xinline", 8) == 0)
1117                                         /* No inlining; ignore */
1118                                         break;
1119                                 if (strcmp(arg, "-xildon") == 0 ||
1120                                     strcmp(arg, "-xildoff") == 0)
1121                                         /* No incremental linking; ignore */
1122                                         break;
1123                                 error(arg);
1124                                 break;
1125 #if defined(__x86)
1126                         case 'm':
1127                                 if (strcmp(arg, "-xmodel=kernel") == 0) {
1128                                         newae(ctx->i_ae, "-ffreestanding");
1129                                         newae(ctx->i_ae, "-mno-red-zone");
1130                                         model = "-mcmodel=kernel";
1131                                         nolibc = 1;
1132                                         break;
1133                                 }
1134                                 error(arg);
1135                                 break;
1136 #endif  /* __x86 */
1137                         case 'O':
1138                                 if (strncmp(arg, "-xO", 3) == 0) {
1139                                         size_t len = strlen(arg);
1140                                         char *s = NULL;
1141                                         int c = *(arg + 3);
1142                                         int level;
1143 
1144                                         if (len != 4 || !isdigit(c))
1145                                                 error(arg);
1146 
1147                                         level = atoi(arg + 3);
1148                                         if (level > 5)
1149                                                 error(arg);
1150                                         if (level >= 2) {
1151                                                 /*
1152                                                  * For gcc-3.4.x at -O2 we
1153                                                  * need to disable optimizations
1154                                                  * that break ON.
1155                                                  */
1156                                                 optim_disable(ctx->i_ae, level);
1157                                                 /*
1158                                                  * limit -xO3 to -O2 as well.
1159                                                  */
1160                                                 level = 2;
1161                                         }
1162                                         if (asprintf(&s, "-O%d", level) == -1)
1163                                                 nomem();
1164                                         newae(ctx->i_ae, s);
1165                                         free(s);
1166                                         break;
1167                                 }
1168                                 error(arg);
1169                                 break;
1170                         case 'r':
1171                                 if (strncmp(arg, "-xregs=", 7) == 0) {
1172                                         xlate(ctx->i_ae, arg + 7, xregs_tbl);
1173                                         break;
1174                                 }
1175                                 error(arg);
1176                                 break;
1177                         case 's':
1178                                 if (strcmp(arg, "-xs") == 0 ||
1179                                     strcmp(arg, "-xspace") == 0 ||
1180                                     strcmp(arg, "-xstrconst") == 0)
1181                                         break;
1182                                 error(arg);
1183                                 break;
1184                         case 't':
1185                                 if (strncmp(arg, "-xtarget=", 9) == 0) {
1186                                         xlate(ctx->i_ae, arg + 9, xtarget_tbl);
1187                                         break;
1188                                 }
1189                                 error(arg);
1190                                 break;
1191                         case 'e':
1192                         case 'h':
1193                         case 'l':
1194                         default:
1195                                 error(arg);
1196                                 break;
1197                         }
1198                         break;
1199                 case 'Y':
1200                         if (arglen == 1) {
1201                                 if ((arg = *++ctx->i_oldargv) == NULL ||
1202                                     *arg == '\0')
1203                                         error("-Y");
1204                                 ctx->i_oldargc--;
1205                                 arglen = strlen(arg + 1);
1206                         } else {
1207                                 arg += 2;
1208                         }
1209                         /* Just ignore -YS,... for now */
1210                         if (strncmp(arg, "S,", 2) == 0)
1211                                 break;
1212                         if (strncmp(arg, "l,", 2) == 0) {
1213                                 char *s = strdup(arg);
1214                                 s[0] = '-';
1215                                 s[1] = 'B';
1216                                 newae(ctx->i_ae, s);
1217                                 free(s);
1218                                 break;
1219                         }
1220                         if (strncmp(arg, "I,", 2) == 0) {
1221                                 char *s = strdup(arg);
1222                                 s[0] = '-';
1223                                 s[1] = 'I';
1224                                 newae(ctx->i_ae, "-nostdinc");
1225                                 newae(ctx->i_ae, s);
1226                                 free(s);
1227                                 break;
1228                         }
1229                         error(arg);
1230                         break;
1231                 case 'Q':
1232                         /*
1233                          * We could map -Qy into -Wl,-Qy etc.
1234                          */
1235                 default:
1236                         error(arg);
1237                         break;
1238                 }
1239         }
1240 
1241         free(nameflag);
1242 
1243         /*
1244          * When compiling multiple source files in a single invocation some
1245          * compilers output objects into the current directory with
1246          * predictable and conventional names.
1247          *
1248          * We prevent any attempt to compile multiple files at once so that
1249          * any such objects created by a shadow can't escape into a later
1250          * link-edit.
1251          */
1252         if (c_files > 1 && op != CW_O_PREPROCESS) {
1253                 errx(2, "multiple source files are "
1254                     "allowed only with -E or -P");
1255         }
1256 
1257         /*
1258          * Make sure that we do not have any unintended interactions between
1259          * the xarch options passed in and the version of the Studio compiler
1260          * used.
1261          */
1262         if ((mflag & (SS11|SS12)) == (SS11|SS12)) {
1263                 errx(2,
1264                     "Conflicting \"-xarch=\" flags (both Studio 11 and 12)\n");
1265         }
1266 
1267         switch (mflag) {
1268         case 0:
1269                 /* FALLTHROUGH */
1270         case M32:
1271 #if defined(__sparc)
1272                 /*
1273                  * Only -m32 is defined and so put in the missing xarch
1274                  * translation.
1275                  */
1276                 newae(ctx->i_ae, "-mcpu=v8");
1277                 newae(ctx->i_ae, "-mno-v8plus");
1278 #endif
1279                 break;
1280         case M64:
1281 #if defined(__sparc)
1282                 /*
1283                  * Only -m64 is defined and so put in the missing xarch
1284                  * translation.
1285                  */
1286                 newae(ctx->i_ae, "-mcpu=v9");
1287 #endif
1288                 break;
1289         case SS12:
1290 #if defined(__sparc)
1291                 /* no -m32/-m64 flag used - this is an error for sparc builds */
1292                 (void) fprintf(stderr, "No -m32/-m64 flag defined\n");
1293                 exit(2);
1294 #endif
1295                 break;
1296         case SS11:
1297                 /* FALLTHROUGH */
1298         case (SS11|M32):
1299         case (SS11|M64):
1300                 break;
1301         case (SS12|M32):
1302 #if defined(__sparc)
1303                 /*
1304                  * Need to add in further 32 bit options because with SS12
1305                  * the xarch=sparcvis option can be applied to 32 or 64
1306                  * bit, and so the translatation table (xtbl) cannot handle
1307                  * that.
1308                  */
1309                 newae(ctx->i_ae, "-mv8plus");
1310 #endif
1311                 break;
1312         case (SS12|M64):
1313                 break;
1314         default:
1315                 (void) fprintf(stderr,
1316                     "Incompatible -xarch= and/or -m32/-m64 options used.\n");
1317                 exit(2);
1318         }
1319 
1320         if (ctx->i_flags & CW_F_SHADOW) {
1321                 if (op == CW_O_PREPROCESS)
1322                         exit(0);
1323                 else if (op == CW_O_LINK && c_files == 0)
1324                         exit(0);
1325         }
1326 
1327         if (model != NULL)
1328                 newae(ctx->i_ae, model);
1329         if (!nolibc)
1330                 newae(ctx->i_ae, "-lc");
1331         if (!seen_o && (ctx->i_flags & CW_F_SHADOW)) {
1332                 newae(ctx->i_ae, "-o");
1333                 newae(ctx->i_ae, discard_file_name(ctx, NULL));
1334         }
1335 }
1336 
1337 static void
1338 do_smatch(cw_ictx_t *ctx)
1339 {
1340         if (ctx->i_flags & CW_F_PROG) {
1341                 newae(ctx->i_ae, "--version");
1342                 return;
1343         }
1344 
1345         /*
1346          * Some sources shouldn't run smatch at all.
1347          */
1348         for (int i = 0; i < ctx->i_oldargc; i++) {
1349                 char *arg = ctx->i_oldargv[i];
1350 
1351                 if (strcmp(arg, "-_smatch=off") == 0) {
1352                         ctx->i_flags &= ~ (CW_F_EXEC | CW_F_ECHO);
1353                         return;
1354                 }
1355         }
1356 
1357         /*
1358          * smatch can handle gcc's options.
1359          */
1360         do_gcc(ctx);
1361 }
1362 
1363 static void
1364 do_cc(cw_ictx_t *ctx)
1365 {
1366         int in_output = 0, seen_o = 0, c_files = 0;
1367         cw_op_t op = CW_O_LINK;
1368         char *nameflag;
1369 
1370         if (ctx->i_flags & CW_F_PROG) {
1371                 newae(ctx->i_ae, "-V");
1372                 return;
1373         }
1374 
1375         if (asprintf(&nameflag, "-_%s=", ctx->i_compiler->c_name) == -1)
1376                 nomem();
1377 
1378         while (--ctx->i_oldargc > 0) {
1379                 char *arg = *++ctx->i_oldargv;
1380 
1381                 if (strncmp(arg, "-_CC=", 5) == 0) {
1382                         newae(ctx->i_ae, strchr(arg, '=') + 1);
1383                         continue;
1384                 }
1385 
1386                 if (*arg != '-') {
1387                         if (!in_output && is_source_file(arg))
1388                                 c_files++;
1389 
1390                         if (in_output == 0 || !(ctx->i_flags & CW_F_SHADOW)) {
1391                                 newae(ctx->i_ae, arg);
1392                         } else {
1393                                 in_output = 0;
1394                                 newae(ctx->i_ae, discard_file_name(ctx, arg));
1395                         }
1396                         continue;
1397                 }
1398                 switch (*(arg + 1)) {
1399                 case '_':
1400                         if ((strncmp(arg, nameflag, strlen(nameflag)) == 0) ||
1401                             (strncmp(arg, "-_cc=", 5) == 0) ||
1402                             (strncmp(arg, "-_sun=", 6) == 0)) {
1403                                 newae(ctx->i_ae, strchr(arg, '=') + 1);
1404                         }
1405                         break;
1406 
1407                 case 'V':
1408                         ctx->i_flags &= ~CW_F_ECHO;
1409                         newae(ctx->i_ae, arg);
1410                         break;
1411                 case 'o':
1412                         seen_o = 1;
1413                         if (strlen(arg) == 2) {
1414                                 in_output = 1;
1415                                 newae(ctx->i_ae, arg);
1416                         } else if (ctx->i_flags & CW_F_SHADOW) {
1417                                 newae(ctx->i_ae, "-o");
1418                                 newae(ctx->i_ae, discard_file_name(ctx, arg));
1419                         } else {
1420                                 newae(ctx->i_ae, arg);
1421                         }
1422                         break;
1423                 case 'c':
1424                 case 'S':
1425                         if (strlen(arg) == 2)
1426                                 op = CW_O_COMPILE;
1427                         newae(ctx->i_ae, arg);
1428                         break;
1429                 case 'E':
1430                 case 'P':
1431                         if (strlen(arg) == 2)
1432                                 op = CW_O_PREPROCESS;
1433                 /*FALLTHROUGH*/
1434                 default:
1435                         newae(ctx->i_ae, arg);
1436                 }
1437         }
1438 
1439         free(nameflag);
1440 
1441         /* See the comment on this same code in do_gcc() */
1442         if (c_files > 1 && op != CW_O_PREPROCESS) {
1443                 errx(2, "multiple source files are "
1444                     "allowed only with -E or -P");
1445         }
1446 
1447         if (ctx->i_flags & CW_F_SHADOW) {
1448                 if (op == CW_O_PREPROCESS)
1449                         exit(0);
1450                 else if (op == CW_O_LINK && c_files == 0)
1451                         exit(0);
1452         }
1453 
1454         if (!seen_o && (ctx->i_flags & CW_F_SHADOW)) {
1455                 newae(ctx->i_ae, "-o");
1456                 newae(ctx->i_ae, discard_file_name(ctx, NULL));
1457         }
1458 }
1459 
1460 static void
1461 prepctx(cw_ictx_t *ctx)
1462 {
1463         newae(ctx->i_ae, ctx->i_compiler->c_path);
1464 
1465         if (ctx->i_flags & CW_F_PROG) {
1466                 (void) printf("%s: %s\n", (ctx->i_flags & CW_F_SHADOW) ?
1467                     "shadow" : "primary", ctx->i_compiler->c_path);
1468                 (void) fflush(stdout);
1469         }
1470 
1471         if (!(ctx->i_flags & CW_F_XLATE))
1472                 return;
1473 
1474         switch (ctx->i_compiler->c_style) {
1475         case SUN:
1476                 do_cc(ctx);
1477                 break;
1478         case GNU:
1479                 do_gcc(ctx);
1480                 break;
1481         case SMATCH:
1482                 do_smatch(ctx);
1483                 break;
1484         }
1485 }
1486 
1487 static int
1488 invoke(cw_ictx_t *ctx)
1489 {
1490         char **newargv;
1491         int ac;
1492         struct ae *a;
1493 
1494         if ((newargv = calloc(sizeof (*newargv), ctx->i_ae->ael_argc + 1)) ==
1495             NULL)
1496                 nomem();
1497 
1498         if (ctx->i_flags & CW_F_ECHO)
1499                 (void) fprintf(stderr, "+ ");
1500 
1501         for (ac = 0, a = ctx->i_ae->ael_head; a; a = a->ae_next, ac++) {
1502                 newargv[ac] = a->ae_arg;
1503                 if (ctx->i_flags & CW_F_ECHO)
1504                         (void) fprintf(stderr, "%s ", a->ae_arg);
1505                 if (a == ctx->i_ae->ael_tail)
1506                         break;
1507         }
1508 
1509         if (ctx->i_flags & CW_F_ECHO) {
1510                 (void) fprintf(stderr, "\n");
1511                 (void) fflush(stderr);
1512         }
1513 
1514         if (!(ctx->i_flags & CW_F_EXEC))
1515                 return (0);
1516 
1517         /*
1518          * We must fix up the environment here so that the dependency files are
1519          * not trampled by the shadow compiler. Also take care of GCC
1520          * environment variables that will throw off gcc. This assumes a primary
1521          * gcc.
1522          */
1523         if ((ctx->i_flags & CW_F_SHADOW) &&
1524             (unsetenv("SUNPRO_DEPENDENCIES") != 0 ||
1525             unsetenv("DEPENDENCIES_OUTPUT") != 0 ||
1526             unsetenv("GCC_ROOT") != 0)) {
1527                 (void) fprintf(stderr, "error: environment setup failed: %s\n",
1528                     strerror(errno));
1529                 return (-1);
1530         }
1531 
1532         (void) execv(newargv[0], newargv);
1533         warn("couldn't run %s", newargv[0]);
1534 
1535         return (-1);
1536 }
1537 
1538 static int
1539 reap(cw_ictx_t *ctx)
1540 {
1541         int status, ret = 0;
1542         char buf[1024];
1543         struct stat s;
1544 
1545         /*
1546          * Only wait for one specific child.
1547          */
1548         if (ctx->i_pid <= 0)
1549                 return (-1);
1550 
1551         do {
1552                 if (waitpid(ctx->i_pid, &status, 0) < 0) {
1553                         warn("cannot reap child");
1554                         return (-1);
1555                 }
1556                 if (status != 0) {
1557                         if (WIFSIGNALED(status)) {
1558                                 ret = -WTERMSIG(status);
1559                                 break;
1560                         } else if (WIFEXITED(status)) {
1561                                 ret = WEXITSTATUS(status);
1562                                 break;
1563                         }
1564                 }
1565         } while (!WIFEXITED(status) && !WIFSIGNALED(status));
1566 
1567         if (stat(ctx->i_stderr, &s) < 0) {
1568                 warn("stat failed on child cleanup");
1569                 return (-1);
1570         }
1571         if (s.st_size != 0) {
1572                 FILE *f;
1573 
1574                 if ((f = fopen(ctx->i_stderr, "r")) != NULL) {
1575                         while (fgets(buf, sizeof (buf), f))
1576                                 (void) fprintf(stderr, "%s", buf);
1577                         (void) fflush(stderr);
1578                         (void) fclose(f);
1579                 }
1580         }
1581         (void) unlink(ctx->i_stderr);
1582         free(ctx->i_stderr);
1583 
1584         /*
1585          * cc returns an error code when given -V; we want that to succeed.
1586          */
1587         if (ctx->i_flags & CW_F_PROG)
1588                 return (0);
1589 
1590         return (ret);
1591 }
1592 
1593 static int
1594 exec_ctx(cw_ictx_t *ctx, int block)
1595 {
1596         if ((ctx->i_stderr = tempnam(ctx->i_tmpdir, "cw")) == NULL) {
1597                 nomem();
1598                 return (-1);
1599         }
1600 
1601         if ((ctx->i_pid = fork()) == 0) {
1602                 int fd;
1603 
1604                 (void) fclose(stderr);
1605                 if ((fd = open(ctx->i_stderr, O_WRONLY | O_CREAT | O_EXCL,
1606                     0666)) < 0) {
1607                         err(1, "open failed for standard error");
1608                 }
1609                 if (dup2(fd, 2) < 0) {
1610                         err(1, "dup2 failed for standard error");
1611                 }
1612                 if (fd != 2)
1613                         (void) close(fd);
1614                 if (freopen("/dev/fd/2", "w", stderr) == NULL) {
1615                         err(1, "freopen failed for /dev/fd/2");
1616                 }
1617 
1618                 prepctx(ctx);
1619                 exit(invoke(ctx));
1620         }
1621 
1622         if (ctx->i_pid < 0) {
1623                 err(1, "fork failed");
1624         }
1625 
1626         if (block)
1627                 return (reap(ctx));
1628 
1629         return (0);
1630 }
1631 
1632 static void
1633 parse_compiler(const char *spec, cw_compiler_t *compiler)
1634 {
1635         char *tspec, *token;
1636 
1637         if ((tspec = strdup(spec)) == NULL)
1638                 nomem();
1639 
1640         if ((token = strsep(&tspec, ",")) == NULL)
1641                 errx(1, "Compiler is missing a name: %s", spec);
1642         compiler->c_name = token;
1643 
1644         if ((token = strsep(&tspec, ",")) == NULL)
1645                 errx(1, "Compiler is missing a path: %s", spec);
1646         compiler->c_path = token;
1647 
1648         if ((token = strsep(&tspec, ",")) == NULL)
1649                 errx(1, "Compiler is missing a style: %s", spec);
1650 
1651         if ((strcasecmp(token, "gnu") == 0) ||
1652             (strcasecmp(token, "gcc") == 0)) {
1653                 compiler->c_style = GNU;
1654         } else if ((strcasecmp(token, "sun") == 0) ||
1655             (strcasecmp(token, "cc") == 0)) {
1656                 compiler->c_style = SUN;
1657         } else if ((strcasecmp(token, "smatch") == 0)) {
1658                 compiler->c_style = SMATCH;
1659         } else {
1660                 errx(1, "unknown compiler style: %s", token);
1661         }
1662 
1663         if (tspec != NULL)
1664                 errx(1, "Excess tokens in compiler: %s", spec);
1665 }
1666 
1667 static void
1668 cleanup(cw_ictx_t *ctx)
1669 {
1670         DIR *dirp;
1671         struct dirent *dp;
1672         char buf[MAXPATHLEN];
1673 
1674         if ((dirp = opendir(ctx->i_tmpdir)) == NULL) {
1675                 if (errno != ENOENT) {
1676                         err(1, "couldn't open temp directory: %s",
1677                             ctx->i_tmpdir);
1678                 } else {
1679                         return;
1680                 }
1681         }
1682 
1683         errno = 0;
1684         while ((dp = readdir(dirp)) != NULL) {
1685                 (void) snprintf(buf, MAXPATHLEN, "%s/%s", ctx->i_tmpdir,
1686                     dp->d_name);
1687 
1688                 if (strcmp(dp->d_name, ".") == 0 ||
1689                     strcmp(dp->d_name, "..") == 0) {
1690                         continue;
1691                 }
1692 
1693                 if (unlink(buf) == -1)
1694                         err(1, "failed to unlink temp file: %s", dp->d_name);
1695                 errno = 0;
1696         }
1697 
1698         if (errno != 0) {
1699                 err(1, "failed to read temporary directory: %s",
1700                     ctx->i_tmpdir);
1701         }
1702 
1703         (void) closedir(dirp);
1704         if (rmdir(ctx->i_tmpdir) != 0) {
1705                 err(1, "failed to unlink temporary directory: %s",
1706                     ctx->i_tmpdir);
1707         }
1708 }
1709 
1710 int
1711 main(int argc, char **argv)
1712 {
1713         int ch;
1714         cw_compiler_t primary = { NULL, NULL, 0 };
1715         cw_compiler_t shadows[10];
1716         int nshadows = 0;
1717         int ret = 0;
1718         boolean_t do_serial = B_FALSE;
1719         boolean_t do_exec = B_FALSE;
1720         boolean_t vflg = B_FALSE;
1721         boolean_t Cflg = B_FALSE;
1722         boolean_t cflg = B_FALSE;
1723         boolean_t nflg = B_FALSE;
1724         char *tmpdir;
1725 
1726         cw_ictx_t *main_ctx;
1727 
1728         static struct option longopts[] = {
1729                 { "compiler", no_argument, NULL, 'c' },
1730                 { "noecho", no_argument, NULL, 'n' },
1731                 { "primary", required_argument, NULL, 'p' },
1732                 { "shadow", required_argument, NULL, 's' },
1733                 { "versions", no_argument, NULL, 'v' },
1734                 { NULL, 0, NULL, 0 },
1735         };
1736 
1737 
1738         if ((main_ctx = newictx()) == NULL)
1739                 nomem();
1740 
1741         while ((ch = getopt_long(argc, argv, "C", longopts, NULL)) != -1) {
1742                 switch (ch) {
1743                 case 'c':
1744                         cflg = B_TRUE;
1745                         break;
1746                 case 'C':
1747                         Cflg = B_TRUE;
1748                         break;
1749                 case 'n':
1750                         nflg = B_TRUE;
1751                         break;
1752                 case 'p':
1753                         if (primary.c_path != NULL) {
1754                                 warnx("Only one primary compiler may "
1755                                     "be specified");
1756                                 usage();
1757                         }
1758 
1759                         parse_compiler(optarg, &primary);
1760                         break;
1761                 case 's':
1762                         if (nshadows >= 10)
1763                                 errx(1, "May only use 10 shadows at "
1764                                     "the moment");
1765                         parse_compiler(optarg, &shadows[nshadows]);
1766                         nshadows++;
1767                         break;
1768                 case 'v':
1769                         vflg = B_TRUE;
1770                         break;
1771                 default:
1772                         (void) fprintf(stderr, "Did you forget '--'?\n");
1773                         usage();
1774                 }
1775         }
1776 
1777         if (primary.c_path == NULL) {
1778                 warnx("A primary compiler must be specified");
1779                 usage();
1780         }
1781 
1782         do_serial = (getenv("CW_SHADOW_SERIAL") == NULL) ? B_FALSE : B_TRUE;
1783         do_exec = (getenv("CW_NO_EXEC") == NULL) ? B_TRUE : B_FALSE;
1784 
1785         /* Leave room for argv[0] */
1786         argc -= (optind - 1);
1787         argv += (optind - 1);
1788 
1789         main_ctx->i_oldargc = argc;
1790         main_ctx->i_oldargv = argv;
1791         main_ctx->i_flags = CW_F_XLATE;
1792         if (nflg == 0)
1793                 main_ctx->i_flags |= CW_F_ECHO;
1794         if (do_exec)
1795                 main_ctx->i_flags |= CW_F_EXEC;
1796         if (Cflg)
1797                 main_ctx->i_flags |= CW_F_CXX;
1798         main_ctx->i_compiler = &primary;
1799 
1800         if (cflg) {
1801                 (void) fputs(primary.c_path, stdout);
1802         }
1803 
1804         if (vflg) {
1805                 (void) printf("cw version %s\n", CW_VERSION);
1806                 (void) fflush(stdout);
1807                 main_ctx->i_flags &= ~CW_F_ECHO;
1808                 main_ctx->i_flags |= CW_F_PROG | CW_F_EXEC;
1809                 do_serial = 1;
1810         }
1811 
1812         tmpdir = getenv("TMPDIR");
1813         if (tmpdir == NULL)
1814                 tmpdir = "/tmp";
1815 
1816         if (asprintf(&main_ctx->i_tmpdir, "%s/cw.XXXXXX", tmpdir) == -1)
1817                 nomem();
1818 
1819         if ((main_ctx->i_tmpdir = mkdtemp(main_ctx->i_tmpdir)) == NULL)
1820                 errx(1, "failed to create temporary directory");
1821 
1822         ret |= exec_ctx(main_ctx, do_serial);
1823 
1824         for (int i = 0; i < nshadows; i++) {
1825                 int r;
1826                 cw_ictx_t *shadow_ctx;
1827 
1828                 if ((shadow_ctx = newictx()) == NULL)
1829                         nomem();
1830 
1831                 (void) memcpy(shadow_ctx, main_ctx, sizeof (cw_ictx_t));
1832 
1833                 shadow_ctx->i_flags |= CW_F_SHADOW;
1834                 shadow_ctx->i_compiler = &shadows[i];
1835 
1836                 r = exec_ctx(shadow_ctx, do_serial);
1837                 if (r == 0) {
1838                         shadow_ctx->i_next = main_ctx->i_next;
1839                         main_ctx->i_next = shadow_ctx;
1840                 }
1841                 ret |= r;
1842         }
1843 
1844         if (!do_serial) {
1845                 cw_ictx_t *next = main_ctx;
1846                 while (next != NULL) {
1847                         cw_ictx_t *toreap = next;
1848                         next = next->i_next;
1849                         ret |= reap(toreap);
1850                 }
1851         }
1852 
1853         cleanup(main_ctx);
1854         return (ret);
1855 }