1 
   2 /*
   3  * CDDL HEADER START
   4  *
   5  * The contents of this file are subject to the terms of the
   6  * Common Development and Distribution License (the "License").
   7  * You may not use this file except in compliance with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 
  23 /*
  24  * Copyright 2018, Richard Lowe.
  25  */
  26 /*
  27  * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
  28  * Use is subject to license terms.
  29  */
  30 
  31 /*
  32  * Wrapper for the GNU C compiler to make it accept the Sun C compiler
  33  * arguments where possible.
  34  *
  35  * Since the translation is inexact, this is something of a work-in-progress.
  36  *
  37  */
  38 
  39 /* If you modify this file, you must increment CW_VERSION */
  40 #define CW_VERSION      "3.0"
  41 
  42 /*
  43  * -#           Verbose mode
  44  * -###         Show compiler commands built by driver, no compilation
  45  * -A<name[(tokens)]>     Preprocessor predicate assertion
  46  * -B<[static|dynamic]>   Specify dynamic or static binding
  47  * -C           Prevent preprocessor from removing comments
  48  * -c           Compile only - produce .o files, suppress linking
  49  * -cg92        Alias for -xtarget=ss1000
  50  * -D<name[=token]>       Associate name with token as if by #define
  51  * -d[y|n]      dynamic [-dy] or static [-dn] option to linker
  52  * -E           Compile source through preprocessor only, output to stdout
  53  * -erroff=<t>    Suppress warnings specified by tags t(%none, %all, <tag list>)
  54  * -errtags=<a>   Display messages with tags a(no, yes)
  55  * -errwarn=<t>   Treats warnings specified by tags t(%none, %all, <tag list>)
  56  *              as errors
  57  * -fast        Optimize using a selection of options
  58  * -fd          Report old-style function definitions and declarations
  59  * -fnonstd     Initialize floating-point hardware to non-standard preferences
  60  * -fns[=<yes|no>] Select non-standard floating point mode
  61  * -fprecision=<p> Set FP rounding precision mode p(single, double, extended)
  62  * -fround=<r>    Select the IEEE rounding mode in effect at startup
  63  * -fsimple[=<n>] Select floating-point optimization preferences <n>
  64  * -fsingle     Use single-precision arithmetic (-Xt and -Xs modes only)
  65  * -ftrap=<t>     Select floating-point trapping mode in effect at startup
  66  * -fstore      force floating pt. values to target precision on assignment
  67  * -G           Build a dynamic shared library
  68  * -g           Compile for debugging
  69  * -H           Print path name of each file included during compilation
  70  * -h <name>      Assign <name> to generated dynamic shared library
  71  * -I<dir>        Add <dir> to preprocessor #include file search path
  72  * -i           Passed to linker to ignore any LD_LIBRARY_PATH setting
  73  * -keeptmp     Keep temporary files created during compilation
  74  * -L<dir>        Pass to linker to add <dir> to the library search path
  75  * -l<name>       Link with library lib<name>.a or lib<name>.so
  76  * -mc          Remove duplicate strings from .comment section of output files
  77  * -mr          Remove all strings from .comment section of output files
  78  * -mr,"string" Remove all strings and append "string" to .comment section
  79  * -mt          Specify options needed when compiling multi-threaded code
  80  * -native      Find available processor, generate code accordingly
  81  * -nofstore    Do not force floating pt. values to target precision
  82  *              on assignment
  83  * -norunpath   Do not build in a runtime path for shared libraries
  84  * -O           Use default optimization level (-xO2 or -xO3. Check man page.)
  85  * -o <outputfile> Set name of output file to <outputfile>
  86  * -P           Compile source through preprocessor only, output to .i  file
  87  * -p           Compile for profiling with prof
  88  * -Q[y|n]      Emit/don't emit identification info to output file
  89  * -R<dir[:dir]> Build runtime search path list into executable
  90  * -S           Compile and only generate assembly code (.s)
  91  * -s           Strip symbol table from the executable file
  92  * -t           Turn off duplicate symbol warnings when linking
  93  * -U<name>       Delete initial definition of preprocessor symbol <name>
  94  * -V           Report version number of each compilation phase
  95  * -v           Do stricter semantic checking
  96  * -W<c>,<arg>      Pass <arg> to specified component <c> (a,l,m,p,0,2,h,i,u)
  97  * -w           Suppress compiler warning messages
  98  * -Xa          Compile assuming ANSI C conformance, allow K & R extensions
  99  *              (default mode)
 100  * -Xs          Compile assuming (pre-ANSI) K & R C style code
 101  * -Xt          Compile assuming K & R conformance, allow ANSI C
 102  * -xarch=<a>     Specify target architecture instruction set
 103  * -xbuiltin[=<b>] When profitable inline, or substitute intrinisic functions
 104  *              for system functions, b={%all,%none}
 105  * -xCC         Accept C++ style comments
 106  * -xchip=<c>     Specify the target processor for use by the optimizer
 107  * -xcode=<c>     Generate different code for forming addresses
 108  * -xcrossfile[=<n>] Enable optimization and inlining across source files,
 109  *              n={0|1}
 110  * -xe          Perform only syntax/semantic checking, no code generation
 111  * -xF          Compile for later mapfile reordering or unused section
 112  *              elimination
 113  * -xhelp=<f>     Display on-line help information f(flags, readme, errors)
 114  * -xildoff     Cancel -xildon
 115  * -xildon      Enable use of the incremental linker, ild
 116  * -xinline=[<a>,...,<a>]  Attempt inlining of specified user routines,
 117  *              <a>={%auto,func,no%func}
 118  * -xlibmieee   Force IEEE 754 return values for math routines in
 119  *              exceptional cases
 120  * -xlibmil     Inline selected libm math routines for optimization
 121  * -xlic_lib=sunperf    Link in the Sun supplied performance libraries
 122  * -xlicinfo    Show license server information
 123  * -xmaxopt=[off,1,2,3,4,5] maximum optimization level allowed on #pragma opt
 124  * -xO<n> Generate optimized code (n={1|2|3|4|5})
 125  * -xP          Print prototypes for function definitions
 126  * -xprofile=<p> Collect data for a profile or use a profile to optimize
 127  *              <p>={{collect,use}[:<path>],tcov}
 128  * -xregs=<r>     Control register allocation
 129  * -xs          Allow debugging without object (.o) files
 130  * -xsb         Compile for use with the WorkShop source browser
 131  * -xsbfast     Generate only WorkShop source browser info, no compilation
 132  * -xsfpconst   Represent unsuffixed floating point constants as single
 133  *              precision
 134  * -xspace      Do not do optimizations that increase code size
 135  * -xstrconst   Place string literals into read-only data segment
 136  * -xtarget=<t>   Specify target system for optimization
 137  * -xtemp=<dir>   Set directory for temporary files to <dir>
 138  * -xtime       Report the execution time for each compilation phase
 139  * -xunroll=n   Enable unrolling loops n times where possible
 140  * -Y<c>,<dir>      Specify <dir> for location of component <c> (a,l,m,p,0,h,i,u)
 141  * -YA,<dir>      Change default directory searched for components
 142  * -YI,<dir>      Change default directory searched for include files
 143  * -YP,<dir>      Change default directory for finding libraries files
 144  * -YS,<dir>      Change default directory for startup object files
 145  */
 146 
 147 /*
 148  * Translation table:
 149  */
 150 /*
 151  * -#                           -v
 152  * -###                         error
 153  * -A<name[(tokens)]>             pass-thru
 154  * -B<[static|dynamic]>           pass-thru (syntax error for anything else)
 155  * -C                           pass-thru
 156  * -c                           pass-thru
 157  * -cg92                        -m32 -mcpu=v8 -mtune=supersparc (SPARC only)
 158  * -D<name[=token]>               pass-thru
 159  * -dy or -dn                   -Wl,-dy or -Wl,-dn
 160  * -E                           pass-thru
 161  * -erroff=E_EMPTY_TRANSLATION_UNIT ignore
 162  * -errtags=%all                -Wall
 163  * -errwarn=%all                -Werror else -Wno-error
 164  * -fast                        error
 165  * -fd                          error
 166  * -fnonstd                     error
 167  * -fns[=<yes|no>]                error
 168  * -fprecision=<p>                error
 169  * -fround=<r>                    error
 170  * -fsimple[=<n>]         error
 171  * -fsingle[=<n>]         error
 172  * -ftrap=<t>                     error
 173  * -fstore                      error
 174  * -G                           pass-thru
 175  * -g                           pass-thru
 176  * -H                           pass-thru
 177  * -h <name>                      pass-thru
 178  * -I<dir>                        pass-thru
 179  * -i                           pass-thru
 180  * -keeptmp                     -save-temps
 181  * -L<dir>                        pass-thru
 182  * -l<name>                       pass-thru
 183  * -mc                          error
 184  * -mr                          error
 185  * -mr,"string"                 error
 186  * -mt                          -D_REENTRANT
 187  * -native                      error
 188  * -nofstore                    error
 189  * -nolib                       -nodefaultlibs
 190  * -norunpath                   ignore
 191  * -O                           -O1 (Check the man page to be certain)
 192  * -o <outputfile>                pass-thru
 193  * -P                           -E -o filename.i (or error)
 194  * -p                           pass-thru
 195  * -Q[y|n]                      error
 196  * -R<dir[:dir]>          pass-thru
 197  * -S                           pass-thru
 198  * -s                           -Wl,-s
 199  * -t                           -Wl,-t
 200  * -U<name>                       pass-thru
 201  * -V                           --version
 202  * -v                           -Wall
 203  * -Wa,<arg>                      pass-thru
 204  * -Wp,<arg>                      pass-thru except -xc99=<a>
 205  * -Wl,<arg>                      pass-thru
 206  * -W{m,0,2,h,i,u>           error/ignore
 207  * -xmodel=kernel               -ffreestanding -mcmodel=kernel -mno-red-zone
 208  * -Wu,-save_args               -msave-args
 209  * -w                           pass-thru
 210  * -Xa                          -std=iso9899:199409 or -ansi
 211  * -Xt                          error
 212  * -Xs                          -traditional -std=c89
 213  * -xarch=<a>                     table
 214  * -xbuiltin[=<b>]                -fbuiltin (-fno-builtin otherwise)
 215  * -xCC                         ignore
 216  * -xchip=<c>                     table
 217  * -xcode=<c>                     table
 218  * -xdebugformat=<format> ignore (always use dwarf-2 for gcc)
 219  * -xcrossfile[=<n>]              ignore
 220  * -xe                          error
 221  * -xF                          error
 222  * -xhelp=<f>                     error
 223  * -xildoff                     ignore
 224  * -xildon                      ignore
 225  * -xinline                     ignore
 226  * -xlibmieee                   error
 227  * -xlibmil                     error
 228  * -xlic_lib=sunperf            error
 229  * -xmaxopt=[...]               error
 230  * -xO<n>                 -O<n>
 231  * -xP                          error
 232  * -xprofile=<p>          error
 233  * -xregs=<r>                     table
 234  * -xs                          error
 235  * -xsb                         error
 236  * -xsbfast                     error
 237  * -xsfpconst                   error
 238  * -xspace                      ignore (-not -Os)
 239  * -xstrconst                   ignore
 240  * -xtarget=<t>                   table
 241  * -xtemp=<dir>                   error
 242  * -xtime                       error
 243  * -xtransition                 -Wtransition
 244  * -xunroll=n                   error
 245  * -W0,-xdbggen=no%usedonly     -fno-eliminate-unused-debug-symbols
 246  *                              -fno-eliminate-unused-debug-types
 247  * -Y<c>,<dir>                      error
 248  * -YA,<dir>                      error
 249  * -YI,<dir>                      -nostdinc -I<dir>
 250  * -YP,<dir>                      error
 251  * -YS,<dir>                      error
 252  */
 253 
 254 #include <ctype.h>
 255 #include <err.h>
 256 #include <errno.h>
 257 #include <fcntl.h>
 258 #include <getopt.h>
 259 #include <stdio.h>
 260 #include <stdlib.h>
 261 #include <string.h>
 262 #include <unistd.h>
 263 
 264 #include <sys/param.h>
 265 #include <sys/stat.h>
 266 #include <sys/types.h>
 267 #include <sys/utsname.h>
 268 #include <sys/wait.h>
 269 
 270 #define CW_F_CXX        0x01
 271 #define CW_F_SHADOW     0x02
 272 #define CW_F_EXEC       0x04
 273 #define CW_F_ECHO       0x08
 274 #define CW_F_XLATE      0x10
 275 #define CW_F_PROG       0x20
 276 
 277 typedef enum cw_op {
 278         CW_O_NONE = 0,
 279         CW_O_PREPROCESS,
 280         CW_O_COMPILE,
 281         CW_O_LINK
 282 } cw_op_t;
 283 
 284 struct aelist {
 285         struct ae {
 286                 struct ae *ae_next;
 287                 char *ae_arg;
 288         } *ael_head, *ael_tail;
 289         int ael_argc;
 290 };
 291 
 292 typedef enum {
 293         GNU,
 294         SUN
 295 } compiler_style_t;
 296 
 297 typedef struct {
 298         char *c_name;
 299         char *c_path;
 300         compiler_style_t c_style;
 301 } cw_compiler_t;
 302 
 303 typedef struct cw_ictx {
 304         struct cw_ictx  *i_next;
 305         cw_compiler_t   *i_compiler;
 306         struct aelist   *i_ae;
 307         uint32_t        i_flags;
 308         int             i_oldargc;
 309         char            **i_oldargv;
 310         pid_t           i_pid;
 311         char            *i_discard;
 312         char            *i_stderr;
 313 } cw_ictx_t;
 314 
 315 /*
 316  * Status values to indicate which Studio compiler and associated
 317  * flags are being used.
 318  */
 319 #define M32             0x01    /* -m32 - only on Studio 12 */
 320 #define M64             0x02    /* -m64 - only on Studio 12 */
 321 #define SS11            0x100   /* Studio 11 */
 322 #define SS12            0x200   /* Studio 12 */
 323 
 324 #define TRANS_ENTRY     5
 325 /*
 326  * Translation table definition for the -xarch= flag. The "x_arg"
 327  * value is translated into the appropriate gcc flags according
 328  * to the values in x_trans[n]. The x_flags indicates what compiler
 329  * is being used and what flags have been set via the use of
 330  * "x_arg".
 331  */
 332 typedef struct xarch_table {
 333         char    *x_arg;
 334         int     x_flags;
 335         char    *x_trans[TRANS_ENTRY];
 336 } xarch_table_t;
 337 
 338 /*
 339  * The translation table for the -xarch= flag used in the Studio compilers.
 340  */
 341 static const xarch_table_t xtbl[] = {
 342 #if defined(__x86)
 343         { "generic",    SS11, {NULL} },
 344         { "generic64",  (SS11|M64), { "-m64", "-mtune=opteron" } },
 345         { "amd64",      (SS11|M64), { "-m64", "-mtune=opteron" } },
 346         { "386",        SS11,   { "-march=i386" } },
 347         { "pentium_pro", SS11,  { "-march=pentiumpro" } },
 348         { "sse",        SS11, { "-msse", "-mfpmath=sse" } },
 349         { "sse2",       SS11, { "-msse2", "-mfpmath=sse" } },
 350 #elif defined(__sparc)
 351         { "generic",    (SS11|M32), { "-m32", "-mcpu=v8" } },
 352         { "generic64",  (SS11|M64), { "-m64", "-mcpu=v9" } },
 353         { "v8",         (SS11|M32), { "-m32", "-mcpu=v8", "-mno-v8plus" } },
 354         { "v8plus",     (SS11|M32), { "-m32", "-mcpu=v9", "-mv8plus" } },
 355         { "v8plusa",    (SS11|M32), { "-m32", "-mcpu=ultrasparc", "-mv8plus",
 356                         "-mvis" } },
 357         { "v8plusb",    (SS11|M32), { "-m32", "-mcpu=ultrasparc3", "-mv8plus",
 358                         "-mvis" } },
 359         { "v9",         (SS11|M64), { "-m64", "-mcpu=v9" } },
 360         { "v9a",        (SS11|M64), { "-m64", "-mcpu=ultrasparc", "-mvis" } },
 361         { "v9b",        (SS11|M64), { "-m64", "-mcpu=ultrasparc3", "-mvis" } },
 362         { "sparc",      SS12, { "-mcpu=v9", "-mv8plus" } },
 363         { "sparcvis",   SS12, { "-mcpu=ultrasparc", "-mvis" } },
 364         { "sparcvis2",  SS12, { "-mcpu=ultrasparc3", "-mvis" } }
 365 #endif
 366 };
 367 
 368 static int xtbl_size = sizeof (xtbl) / sizeof (xarch_table_t);
 369 
 370 static const char *xchip_tbl[] = {
 371 #if defined(__x86)
 372         "386",          "-mtune=i386", NULL,
 373         "486",          "-mtune=i486", NULL,
 374         "pentium",      "-mtune=pentium", NULL,
 375         "pentium_pro",  "-mtune=pentiumpro", NULL,
 376 #elif defined(__sparc)
 377         "super",        "-mtune=supersparc", NULL,
 378         "ultra",        "-mtune=ultrasparc", NULL,
 379         "ultra3",       "-mtune=ultrasparc3", NULL,
 380 #endif
 381         NULL,           NULL
 382 };
 383 
 384 static const char *xcode_tbl[] = {
 385 #if defined(__sparc)
 386         "abs32",        "-fno-pic", "-mcmodel=medlow", NULL,
 387         "abs44",        "-fno-pic", "-mcmodel=medmid", NULL,
 388         "abs64",        "-fno-pic", "-mcmodel=medany", NULL,
 389         "pic13",        "-fpic", NULL,
 390         "pic32",        "-fPIC", NULL,
 391 #endif
 392         NULL,           NULL
 393 };
 394 
 395 static const char *xtarget_tbl[] = {
 396 #if defined(__x86)
 397         "pentium_pro",  "-march=pentiumpro", NULL,
 398 #endif  /* __x86 */
 399         NULL,           NULL
 400 };
 401 
 402 static const char *xregs_tbl[] = {
 403 #if defined(__sparc)
 404         "appl",         "-mapp-regs", NULL,
 405         "no%appl",      "-mno-app-regs", NULL,
 406         "float",        "-mfpu", NULL,
 407         "no%float",     "-mno-fpu", NULL,
 408 #endif  /* __sparc */
 409         NULL,           NULL
 410 };
 411 
 412 static void
 413 nomem(void)
 414 {
 415         errx(1, "out of memory");
 416 }
 417 
 418 static void
 419 newae(struct aelist *ael, const char *arg)
 420 {
 421         struct ae *ae;
 422 
 423         if ((ae = calloc(sizeof (*ae), 1)) == NULL)
 424                 nomem();
 425         ae->ae_arg = strdup(arg);
 426         if (ael->ael_tail == NULL)
 427                 ael->ael_head = ae;
 428         else
 429                 ael->ael_tail->ae_next = ae;
 430         ael->ael_tail = ae;
 431         ael->ael_argc++;
 432 }
 433 
 434 static cw_ictx_t *
 435 newictx(void)
 436 {
 437         cw_ictx_t *ctx = calloc(sizeof (cw_ictx_t), 1);
 438         if (ctx)
 439                 if ((ctx->i_ae = calloc(sizeof (struct aelist), 1)) == NULL) {
 440                         free(ctx);
 441                         return (NULL);
 442                 }
 443 
 444         return (ctx);
 445 }
 446 
 447 static void
 448 error(const char *arg)
 449 {
 450         errx(2, "error: mapping failed at or near arg '%s'", arg);
 451 }
 452 
 453 /*
 454  * Add the current favourite set of warnings to the gcc invocation.
 455  */
 456 static void
 457 warnings(struct aelist *h)
 458 {
 459         static int warningsonce;
 460 
 461         if (warningsonce++)
 462                 return;
 463 
 464         /*
 465          * Enable as many warnings as exist, then disable those that we never
 466          * ever want.
 467          */
 468         newae(h, "-Wall");
 469         newae(h, "-Wextra");
 470 }
 471 
 472 static void
 473 optim_disable(struct aelist *h, int level)
 474 {
 475         if (level >= 2) {
 476                 newae(h, "-fno-strict-aliasing");
 477                 newae(h, "-fno-unit-at-a-time");
 478                 newae(h, "-fno-optimize-sibling-calls");
 479         }
 480 }
 481 
 482 static void
 483 Xsmode(struct aelist *h)
 484 {
 485         static int xsonce;
 486 
 487         if (xsonce++)
 488                 return;
 489 
 490         newae(h, "-traditional");
 491         newae(h, "-traditional-cpp");
 492 }
 493 
 494 static void
 495 usage()
 496 {
 497         extern char *__progname;
 498         (void) fprintf(stderr,
 499             "usage: %s [-C] [--versions] --primary <compiler> "
 500             "[--shadow <compiler>]... -- cflags...\n",
 501             __progname);
 502         (void) fprintf(stderr, "compilers take the form: name,path,style\n"
 503             " - name: a unique name usable in flag specifiers\n"
 504             " - path: path to the compiler binary\n"
 505             " - style: the style of flags expected: either sun or gnu\n");
 506         exit(2);
 507 }
 508 
 509 static int
 510 xlate_xtb(struct aelist *h, const char *xarg)
 511 {
 512         int     i, j;
 513 
 514         for (i = 0; i < xtbl_size; i++) {
 515                 if (strcmp(xtbl[i].x_arg, xarg) == 0)
 516                         break;
 517         }
 518 
 519         /*
 520          * At the end of the table and so no matching "arg" entry
 521          * found and so this must be a bad -xarch= flag.
 522          */
 523         if (i == xtbl_size)
 524                 error(xarg);
 525 
 526         for (j = 0; j < TRANS_ENTRY; j++) {
 527                 if (xtbl[i].x_trans[j] != NULL)
 528                         newae(h, xtbl[i].x_trans[j]);
 529                 else
 530                         break;
 531         }
 532         return (xtbl[i].x_flags);
 533 
 534 }
 535 
 536 static void
 537 xlate(struct aelist *h, const char *xarg, const char **table)
 538 {
 539         while (*table != NULL && strcmp(xarg, *table) != 0) {
 540                 while (*table != NULL)
 541                         table++;
 542                 table++;
 543         }
 544 
 545         if (*table == NULL)
 546                 error(xarg);
 547 
 548         table++;
 549 
 550         while (*table != NULL) {
 551                 newae(h, *table);
 552                 table++;
 553         }
 554 }
 555 
 556 /*
 557  * The compiler wants the output file to end in appropriate extension.  If
 558  * we're generating a name from whole cloth (path == NULL), we assume that
 559  * extension to be .o, otherwise we match the extension of the caller.
 560  */
 561 static char *
 562 discard_file_name(const char *path)
 563 {
 564         char *ret, *ext, *file;
 565 
 566         if (path == NULL) {
 567                 ext = ".o";
 568         } else {
 569                 ext = strrchr(path, '.');
 570         }
 571 
 572         if ((ret = calloc(MAXPATHLEN, sizeof (char))) == NULL)
 573                 nomem();
 574 
 575         if ((file = tempnam(NULL, ".cw")) == NULL)
 576                 nomem();
 577 
 578         (void) strlcpy(ret, file, MAXPATHLEN);
 579         if (ext != NULL)
 580                 (void) strlcat(ret, ext, MAXPATHLEN);
 581         free(file);
 582         return (ret);
 583 }
 584 
 585 static void
 586 do_gcc(cw_ictx_t *ctx)
 587 {
 588         int c;
 589         int nolibc = 0;
 590         int in_output = 0, seen_o = 0, c_files = 0;
 591         cw_op_t op = CW_O_LINK;
 592         char *model = NULL;
 593         char *nameflag;
 594         int mflag = 0;
 595 
 596         if (ctx->i_flags & CW_F_PROG) {
 597                 newae(ctx->i_ae, "--version");
 598                 return;
 599         }
 600 
 601         newae(ctx->i_ae, "-fident");
 602         newae(ctx->i_ae, "-finline");
 603         newae(ctx->i_ae, "-fno-inline-functions");
 604         newae(ctx->i_ae, "-fno-builtin");
 605         newae(ctx->i_ae, "-fno-asm");
 606         newae(ctx->i_ae, "-fdiagnostics-show-option");
 607         newae(ctx->i_ae, "-nodefaultlibs");
 608 
 609 #if defined(__sparc)
 610         /*
 611          * The SPARC ldd and std instructions require 8-byte alignment of
 612          * their address operand.  gcc correctly uses them only when the
 613          * ABI requires 8-byte alignment; unfortunately we have a number of
 614          * pieces of buggy code that doesn't conform to the ABI.  This
 615          * flag makes gcc work more like Studio with -xmemalign=4.
 616          */
 617         newae(ctx->i_ae, "-mno-integer-ldd-std");
 618 #endif
 619 
 620         /*
 621          * This is needed because 'u' is defined
 622          * under a conditional on 'sun'.  Should
 623          * probably just remove the conditional,
 624          * or make it be dependent on '__sun'.
 625          *
 626          * -Dunix is also missing in enhanced ANSI mode
 627          */
 628         newae(ctx->i_ae, "-D__sun");
 629 
 630         if (asprintf(&nameflag, "-_%s=", ctx->i_compiler->c_name) == -1)
 631                 nomem();
 632 
 633         /*
 634          * Walk the argument list, translating as we go ..
 635          */
 636         while (--ctx->i_oldargc > 0) {
 637                 char *arg = *++ctx->i_oldargv;
 638                 size_t arglen = strlen(arg);
 639 
 640                 if (*arg == '-') {
 641                         arglen--;
 642                 } else {
 643                         /*
 644                          * Discard inline files that gcc doesn't grok
 645                          */
 646                         if (!in_output && arglen > 3 &&
 647                             strcmp(arg + arglen - 3, ".il") == 0)
 648                                 continue;
 649 
 650                         if (!in_output && arglen > 2 &&
 651                             arg[arglen - 2] == '.' &&
 652                             (arg[arglen - 1] == 'S' || arg[arglen - 1] == 's' ||
 653                             arg[arglen - 1] == 'c' || arg[arglen - 1] == 'i'))
 654                                 c_files++;
 655 
 656                         /*
 657                          * Otherwise, filenames and partial arguments
 658                          * are passed through for gcc to chew on.  However,
 659                          * output is always discarded for the secondary
 660                          * compiler.
 661                          */
 662                         if ((ctx->i_flags & CW_F_SHADOW) && in_output) {
 663                                 ctx->i_discard = discard_file_name(arg);
 664 
 665                                 if (ctx->i_discard == NULL)
 666                                         nomem();
 667                                 newae(ctx->i_ae, ctx->i_discard);
 668                         } else {
 669                                 newae(ctx->i_ae, arg);
 670                         }
 671                         in_output = 0;
 672                         continue;
 673                 }
 674 
 675                 if (ctx->i_flags & CW_F_CXX) {
 676                         if (strncmp(arg, "-_g++=", 6) == 0) {
 677                                 newae(ctx->i_ae, strchr(arg, '=') + 1);
 678                                 continue;
 679                         }
 680                         if (strncmp(arg, "-compat=", 8) == 0) {
 681                                 /* discard -compat=4 and -compat=5 */
 682                                 continue;
 683                         }
 684                         if (strcmp(arg, "-Qoption") == 0) {
 685                                 /* discard -Qoption and its two arguments */
 686                                 if (ctx->i_oldargc < 3)
 687                                         error(arg);
 688                                 ctx->i_oldargc -= 2;
 689                                 ctx->i_oldargv += 2;
 690                                 continue;
 691                         }
 692                         if (strcmp(arg, "-xwe") == 0) {
 693                                 /* turn warnings into errors */
 694                                 newae(ctx->i_ae, "-Werror");
 695                                 continue;
 696                         }
 697                         if (strcmp(arg, "-norunpath") == 0) {
 698                                 /* gcc has no corresponding option */
 699                                 continue;
 700                         }
 701                         if (strcmp(arg, "-nolib") == 0) {
 702                                 /* -nodefaultlibs is on by default */
 703                                 nolibc = 1;
 704                                 continue;
 705                         }
 706 #if defined(__sparc)
 707                         if (strcmp(arg, "-cg92") == 0) {
 708                                 mflag |= xlate_xtb(ctx->i_ae, "v8");
 709                                 xlate(ctx->i_ae, "super", xchip_tbl);
 710                                 continue;
 711                         }
 712 #endif  /* __sparc */
 713                 }
 714 
 715                 switch ((c = arg[1])) {
 716                 case '_':
 717                         if ((strncmp(arg, nameflag, strlen(nameflag)) == 0) ||
 718                             (strncmp(arg, "-_gcc=", 6) == 0) ||
 719                             (strncmp(arg, "-_gnu=", 6) == 0)) {
 720                                 newae(ctx->i_ae, strchr(arg, '=') + 1);
 721                         }
 722                         break;
 723                 case '#':
 724                         if (arglen == 1) {
 725                                 newae(ctx->i_ae, "-v");
 726                                 break;
 727                         }
 728                         error(arg);
 729                         break;
 730                 case 'f':
 731                         if ((strcmp(arg, "-fpic") == 0) ||
 732                             (strcmp(arg, "-fPIC") == 0)) {
 733                                 newae(ctx->i_ae, arg);
 734                                 break;
 735                         }
 736                         error(arg);
 737                         break;
 738                 case 'g':
 739                         newae(ctx->i_ae, "-gdwarf-2");
 740                         break;
 741                 case 'E':
 742                         if (arglen == 1) {
 743                                 newae(ctx->i_ae, "-xc");
 744                                 newae(ctx->i_ae, arg);
 745                                 op = CW_O_PREPROCESS;
 746                                 nolibc = 1;
 747                                 break;
 748                         }
 749                         error(arg);
 750                         break;
 751                 case 'c':
 752                 case 'S':
 753                         if (arglen == 1) {
 754                                 op = CW_O_COMPILE;
 755                                 nolibc = 1;
 756                         }
 757                         /* FALLTHROUGH */
 758                 case 'C':
 759                 case 'H':
 760                 case 'p':
 761                         if (arglen == 1) {
 762                                 newae(ctx->i_ae, arg);
 763                                 break;
 764                         }
 765                         error(arg);
 766                         break;
 767                 case 'A':
 768                 case 'h':
 769                 case 'I':
 770                 case 'i':
 771                 case 'L':
 772                 case 'l':
 773                 case 'R':
 774                 case 'U':
 775                 case 'u':
 776                 case 'w':
 777                         newae(ctx->i_ae, arg);
 778                         break;
 779                 case 'o':
 780                         seen_o = 1;
 781                         if (arglen == 1) {
 782                                 in_output = 1;
 783                                 newae(ctx->i_ae, arg);
 784                         } else if (ctx->i_flags & CW_F_SHADOW) {
 785                                 newae(ctx->i_ae, "-o");
 786                                 ctx->i_discard = discard_file_name(arg);
 787                                 if (ctx->i_discard == NULL)
 788                                         nomem();
 789 
 790                                 newae(ctx->i_ae, ctx->i_discard);
 791                         } else {
 792                                 newae(ctx->i_ae, arg);
 793                         }
 794                         break;
 795                 case 'D':
 796                         newae(ctx->i_ae, arg);
 797                         /*
 798                          * XXX  Clearly a hack ... do we need _KADB too?
 799                          */
 800                         if (strcmp(arg, "-D_KERNEL") == 0 ||
 801                             strcmp(arg, "-D_BOOT") == 0)
 802                                 newae(ctx->i_ae, "-ffreestanding");
 803                         break;
 804                 case 'd':
 805                         if (arglen == 2) {
 806                                 if (strcmp(arg, "-dy") == 0) {
 807                                         newae(ctx->i_ae, "-Wl,-dy");
 808                                         break;
 809                                 }
 810                                 if (strcmp(arg, "-dn") == 0) {
 811                                         newae(ctx->i_ae, "-Wl,-dn");
 812                                         break;
 813                                 }
 814                         }
 815                         if (strcmp(arg, "-dalign") == 0) {
 816                                 /*
 817                                  * -dalign forces alignment in some cases;
 818                                  * gcc does not need any flag to do this.
 819                                  */
 820                                 break;
 821                         }
 822                         error(arg);
 823                         break;
 824                 case 'e':
 825                         if (strcmp(arg,
 826                             "-erroff=E_EMPTY_TRANSLATION_UNIT") == 0) {
 827                                 /*
 828                                  * Accept but ignore this -- gcc doesn't
 829                                  * seem to complain about empty translation
 830                                  * units
 831                                  */
 832                                 break;
 833                         }
 834                         /* XX64 -- ignore all -erroff= options, for now */
 835                         if (strncmp(arg, "-erroff=", 8) == 0)
 836                                 break;
 837                         if (strcmp(arg, "-errtags=yes") == 0) {
 838                                 warnings(ctx->i_ae);
 839                                 break;
 840                         }
 841                         if (strcmp(arg, "-errwarn=%all") == 0) {
 842                                 newae(ctx->i_ae, "-Werror");
 843                                 break;
 844                         }
 845                         error(arg);
 846                         break;
 847                 case 'G':
 848                         newae(ctx->i_ae, "-shared");
 849                         nolibc = 1;
 850                         break;
 851                 case 'k':
 852                         if (strcmp(arg, "-keeptmp") == 0) {
 853                                 newae(ctx->i_ae, "-save-temps");
 854                                 break;
 855                         }
 856                         error(arg);
 857                         break;
 858                 case 'm':
 859                         if (strcmp(arg, "-mt") == 0) {
 860                                 newae(ctx->i_ae, "-D_REENTRANT");
 861                                 break;
 862                         }
 863                         if (strcmp(arg, "-m64") == 0) {
 864                                 newae(ctx->i_ae, "-m64");
 865 #if defined(__x86)
 866                                 newae(ctx->i_ae, "-mtune=opteron");
 867 #endif
 868                                 mflag |= M64;
 869                                 break;
 870                         }
 871                         if (strcmp(arg, "-m32") == 0) {
 872                                 newae(ctx->i_ae, "-m32");
 873                                 mflag |= M32;
 874                                 break;
 875                         }
 876                         error(arg);
 877                         break;
 878                 case 'B':       /* linker options */
 879                 case 'M':
 880                 case 'z':
 881                         {
 882                                 char *opt;
 883                                 size_t len;
 884                                 char *s;
 885 
 886                                 if (arglen == 1) {
 887                                         opt = *++ctx->i_oldargv;
 888                                         if (opt == NULL || *opt == '\0')
 889                                                 error(arg);
 890                                         ctx->i_oldargc--;
 891                                 } else {
 892                                         opt = arg + 2;
 893                                 }
 894                                 len = strlen(opt) + 7;
 895                                 if ((s = malloc(len)) == NULL)
 896                                         nomem();
 897                                 (void) snprintf(s, len, "-Wl,-%c%s", c, opt);
 898                                 newae(ctx->i_ae, s);
 899                                 free(s);
 900                         }
 901                         break;
 902                 case 'O':
 903                         if (arglen == 1) {
 904                                 newae(ctx->i_ae, "-O");
 905                                 break;
 906                         }
 907                         error(arg);
 908                         break;
 909                 case 'P':
 910                         /*
 911                          * We could do '-E -o filename.i', but that's hard,
 912                          * and we don't need it for the case that's triggering
 913                          * this addition.  We'll require the user to specify
 914                          * -o in the Makefile.  If they don't they'll find out
 915                          * in a hurry.
 916                          */
 917                         newae(ctx->i_ae, "-E");
 918                         op = CW_O_PREPROCESS;
 919                         nolibc = 1;
 920                         break;
 921                 case 's':
 922                         if (arglen == 1) {
 923                                 newae(ctx->i_ae, "-Wl,-s");
 924                                 break;
 925                         }
 926                         error(arg);
 927                         break;
 928                 case 't':
 929                         if (arglen == 1) {
 930                                 newae(ctx->i_ae, "-Wl,-t");
 931                                 break;
 932                         }
 933                         error(arg);
 934                         break;
 935                 case 'V':
 936                         if (arglen == 1) {
 937                                 ctx->i_flags &= ~CW_F_ECHO;
 938                                 newae(ctx->i_ae, "--version");
 939                                 break;
 940                         }
 941                         error(arg);
 942                         break;
 943                 case 'v':
 944                         if (arglen == 1) {
 945                                 warnings(ctx->i_ae);
 946                                 break;
 947                         }
 948                         error(arg);
 949                         break;
 950                 case 'W':
 951                         if (strncmp(arg, "-Wp,-xc99", 9) == 0) {
 952                                 /*
 953                                  * gcc's preprocessor will accept c99
 954                                  * regardless, so accept and ignore.
 955                                  */
 956                                 break;
 957                         }
 958                         if (strncmp(arg, "-Wa,", 4) == 0 ||
 959                             strncmp(arg, "-Wp,", 4) == 0 ||
 960                             strncmp(arg, "-Wl,", 4) == 0) {
 961                                 newae(ctx->i_ae, arg);
 962                                 break;
 963                         }
 964                         if (strcmp(arg, "-W0,-noglobal") == 0 ||
 965                             strcmp(arg, "-W0,-xglobalstatic") == 0) {
 966                                 /*
 967                                  * gcc doesn't prefix local symbols
 968                                  * in debug mode, so this is not needed.
 969                                  */
 970                                 break;
 971                         }
 972                         if (strcmp(arg, "-W0,-Lt") == 0) {
 973                                 /*
 974                                  * Generate tests at the top of loops.
 975                                  * There is no direct gcc equivalent, ignore.
 976                                  */
 977                                 break;
 978                         }
 979                         if (strcmp(arg, "-W0,-xdbggen=no%usedonly") == 0) {
 980                                 newae(ctx->i_ae,
 981                                     "-fno-eliminate-unused-debug-symbols");
 982                                 newae(ctx->i_ae,
 983                                     "-fno-eliminate-unused-debug-types");
 984                                 break;
 985                         }
 986                         if (strcmp(arg, "-W2,-xwrap_int") == 0) {
 987                                 /*
 988                                  * Use the legacy behaviour (pre-SS11)
 989                                  * for integer wrapping.
 990                                  * gcc does not need this.
 991                                  */
 992                                 break;
 993                         }
 994                         if (strcmp(arg, "-Wd,-xsafe=unboundsym") == 0) {
 995                                 /*
 996                                  * Prevents optimizing away checks for
 997                                  * unbound weak symbol addresses.  gcc does
 998                                  * not do this, so it's not needed.
 999                                  */
1000                                 break;
1001                         }
1002                         if (strncmp(arg, "-Wc,-xcode=", 11) == 0) {
1003                                 xlate(ctx->i_ae, arg + 11, xcode_tbl);
1004                                 break;
1005                         }
1006                         if (strncmp(arg, "-Wc,-Qiselect", 13) == 0) {
1007                                 /*
1008                                  * Prevents insertion of register symbols.
1009                                  * gcc doesn't do this, so ignore it.
1010                                  */
1011                                 break;
1012                         }
1013                         if (strcmp(arg, "-Wc,-Qassembler-ounrefsym=0") == 0) {
1014                                 /*
1015                                  * Prevents optimizing away of static variables.
1016                                  * gcc does not do this, so it's not needed.
1017                                  */
1018                                 break;
1019                         }
1020 #if defined(__x86)
1021                         if (strcmp(arg, "-Wu,-save_args") == 0) {
1022                                 newae(ctx->i_ae, "-msave-args");
1023                                 break;
1024                         }
1025 #endif  /* __x86 */
1026                         error(arg);
1027                         break;
1028                 case 'X':
1029                         if (strcmp(arg, "-Xa") == 0 ||
1030                             strcmp(arg, "-Xt") == 0) {
1031                                 break;
1032                         }
1033                         if (strcmp(arg, "-Xs") == 0) {
1034                                 Xsmode(ctx->i_ae);
1035                                 break;
1036                         }
1037                         error(arg);
1038                         break;
1039                 case 'x':
1040                         if (arglen == 1)
1041                                 error(arg);
1042                         switch (arg[2]) {
1043                         case 'a':
1044                                 if (strncmp(arg, "-xarch=", 7) == 0) {
1045                                         mflag |= xlate_xtb(ctx->i_ae, arg + 7);
1046                                         break;
1047                                 }
1048                                 error(arg);
1049                                 break;
1050                         case 'b':
1051                                 if (strncmp(arg, "-xbuiltin=", 10) == 0) {
1052                                         if (strcmp(arg + 10, "%all"))
1053                                                 newae(ctx->i_ae, "-fbuiltin");
1054                                         break;
1055                                 }
1056                                 error(arg);
1057                                 break;
1058                         case 'C':
1059                                 /* Accept C++ style comments -- ignore */
1060                                 if (strcmp(arg, "-xCC") == 0)
1061                                         break;
1062                                 error(arg);
1063                                 break;
1064                         case 'c':
1065                                 if (strncmp(arg, "-xc99=%all", 10) == 0) {
1066                                         newae(ctx->i_ae, "-std=gnu99");
1067                                         break;
1068                                 }
1069                                 if (strncmp(arg, "-xc99=%none", 11) == 0) {
1070                                         newae(ctx->i_ae, "-std=gnu89");
1071                                         break;
1072                                 }
1073                                 if (strncmp(arg, "-xchip=", 7) == 0) {
1074                                         xlate(ctx->i_ae, arg + 7, xchip_tbl);
1075                                         break;
1076                                 }
1077                                 if (strncmp(arg, "-xcode=", 7) == 0) {
1078                                         xlate(ctx->i_ae, arg + 7, xcode_tbl);
1079                                         break;
1080                                 }
1081                                 if (strncmp(arg, "-xcrossfile", 11) == 0)
1082                                         break;
1083                                 error(arg);
1084                                 break;
1085                         case 'd':
1086                                 if (strncmp(arg, "-xdebugformat=", 14) == 0)
1087                                         break;
1088                                 error(arg);
1089                                 break;
1090                         case 'F':
1091                                 /*
1092                                  * Compile for mapfile reordering, or unused
1093                                  * section elimination, syntax can be -xF or
1094                                  * more complex, like -xF=%all -- ignore.
1095                                  */
1096                                 if (strncmp(arg, "-xF", 3) == 0)
1097                                         break;
1098                                 error(arg);
1099                                 break;
1100                         case 'i':
1101                                 if (strncmp(arg, "-xinline", 8) == 0)
1102                                         /* No inlining; ignore */
1103                                         break;
1104                                 if (strcmp(arg, "-xildon") == 0 ||
1105                                     strcmp(arg, "-xildoff") == 0)
1106                                         /* No incremental linking; ignore */
1107                                         break;
1108                                 error(arg);
1109                                 break;
1110 #if defined(__x86)
1111                         case 'm':
1112                                 if (strcmp(arg, "-xmodel=kernel") == 0) {
1113                                         newae(ctx->i_ae, "-ffreestanding");
1114                                         newae(ctx->i_ae, "-mno-red-zone");
1115                                         model = "-mcmodel=kernel";
1116                                         nolibc = 1;
1117                                         break;
1118                                 }
1119                                 error(arg);
1120                                 break;
1121 #endif  /* __x86 */
1122                         case 'O':
1123                                 if (strncmp(arg, "-xO", 3) == 0) {
1124                                         size_t len = strlen(arg);
1125                                         char *s = NULL;
1126                                         int c = *(arg + 3);
1127                                         int level;
1128 
1129                                         if (len != 4 || !isdigit(c))
1130                                                 error(arg);
1131 
1132                                         level = atoi(arg + 3);
1133                                         if (level > 5)
1134                                                 error(arg);
1135                                         if (level >= 2) {
1136                                                 /*
1137                                                  * For gcc-3.4.x at -O2 we
1138                                                  * need to disable optimizations
1139                                                  * that break ON.
1140                                                  */
1141                                                 optim_disable(ctx->i_ae, level);
1142                                                 /*
1143                                                  * limit -xO3 to -O2 as well.
1144                                                  */
1145                                                 level = 2;
1146                                         }
1147                                         if (asprintf(&s, "-O%d", level) == -1)
1148                                                 nomem();
1149                                         newae(ctx->i_ae, s);
1150                                         free(s);
1151                                         break;
1152                                 }
1153                                 error(arg);
1154                                 break;
1155                         case 'r':
1156                                 if (strncmp(arg, "-xregs=", 7) == 0) {
1157                                         xlate(ctx->i_ae, arg + 7, xregs_tbl);
1158                                         break;
1159                                 }
1160                                 error(arg);
1161                                 break;
1162                         case 's':
1163                                 if (strcmp(arg, "-xs") == 0 ||
1164                                     strcmp(arg, "-xspace") == 0 ||
1165                                     strcmp(arg, "-xstrconst") == 0)
1166                                         break;
1167                                 error(arg);
1168                                 break;
1169                         case 't':
1170                                 if (strncmp(arg, "-xtarget=", 9) == 0) {
1171                                         xlate(ctx->i_ae, arg + 9, xtarget_tbl);
1172                                         break;
1173                                 }
1174                                 error(arg);
1175                                 break;
1176                         case 'e':
1177                         case 'h':
1178                         case 'l':
1179                         default:
1180                                 error(arg);
1181                                 break;
1182                         }
1183                         break;
1184                 case 'Y':
1185                         if (arglen == 1) {
1186                                 if ((arg = *++ctx->i_oldargv) == NULL ||
1187                                     *arg == '\0')
1188                                         error("-Y");
1189                                 ctx->i_oldargc--;
1190                                 arglen = strlen(arg + 1);
1191                         } else {
1192                                 arg += 2;
1193                         }
1194                         /* Just ignore -YS,... for now */
1195                         if (strncmp(arg, "S,", 2) == 0)
1196                                 break;
1197                         if (strncmp(arg, "l,", 2) == 0) {
1198                                 char *s = strdup(arg);
1199                                 s[0] = '-';
1200                                 s[1] = 'B';
1201                                 newae(ctx->i_ae, s);
1202                                 free(s);
1203                                 break;
1204                         }
1205                         if (strncmp(arg, "I,", 2) == 0) {
1206                                 char *s = strdup(arg);
1207                                 s[0] = '-';
1208                                 s[1] = 'I';
1209                                 newae(ctx->i_ae, "-nostdinc");
1210                                 newae(ctx->i_ae, s);
1211                                 free(s);
1212                                 break;
1213                         }
1214                         error(arg);
1215                         break;
1216                 case 'Q':
1217                         /*
1218                          * We could map -Qy into -Wl,-Qy etc.
1219                          */
1220                 default:
1221                         error(arg);
1222                         break;
1223                 }
1224         }
1225 
1226         free(nameflag);
1227 
1228         /*
1229          * When compiling multiple source files in a single invocation some
1230          * compilers output objects into the current directory with
1231          * predictable and conventional names.
1232          *
1233          * We prevent any attempt to compile multiple files at once so that
1234          * any such objects created by a shadow can't escape into a later
1235          * link-edit.
1236          */
1237         if (c_files > 1 && op != CW_O_PREPROCESS) {
1238                 errx(2, "multiple source files are "
1239                     "allowed only with -E or -P");
1240         }
1241 
1242         /*
1243          * Make sure that we do not have any unintended interactions between
1244          * the xarch options passed in and the version of the Studio compiler
1245          * used.
1246          */
1247         if ((mflag & (SS11|SS12)) == (SS11|SS12)) {
1248                 errx(2,
1249                     "Conflicting \"-xarch=\" flags (both Studio 11 and 12)\n");
1250         }
1251 
1252         switch (mflag) {
1253         case 0:
1254                 /* FALLTHROUGH */
1255         case M32:
1256 #if defined(__sparc)
1257                 /*
1258                  * Only -m32 is defined and so put in the missing xarch
1259                  * translation.
1260                  */
1261                 newae(ctx->i_ae, "-mcpu=v8");
1262                 newae(ctx->i_ae, "-mno-v8plus");
1263 #endif
1264                 break;
1265         case M64:
1266 #if defined(__sparc)
1267                 /*
1268                  * Only -m64 is defined and so put in the missing xarch
1269                  * translation.
1270                  */
1271                 newae(ctx->i_ae, "-mcpu=v9");
1272 #endif
1273                 break;
1274         case SS12:
1275 #if defined(__sparc)
1276                 /* no -m32/-m64 flag used - this is an error for sparc builds */
1277                 (void) fprintf(stderr, "No -m32/-m64 flag defined\n");
1278                 exit(2);
1279 #endif
1280                 break;
1281         case SS11:
1282                 /* FALLTHROUGH */
1283         case (SS11|M32):
1284         case (SS11|M64):
1285                 break;
1286         case (SS12|M32):
1287 #if defined(__sparc)
1288                 /*
1289                  * Need to add in further 32 bit options because with SS12
1290                  * the xarch=sparcvis option can be applied to 32 or 64
1291                  * bit, and so the translatation table (xtbl) cannot handle
1292                  * that.
1293                  */
1294                 newae(ctx->i_ae, "-mv8plus");
1295 #endif
1296                 break;
1297         case (SS12|M64):
1298                 break;
1299         default:
1300                 (void) fprintf(stderr,
1301                     "Incompatible -xarch= and/or -m32/-m64 options used.\n");
1302                 exit(2);
1303         }
1304 
1305         if (ctx->i_flags & CW_F_SHADOW) {
1306                 if (op == CW_O_PREPROCESS)
1307                         exit(0);
1308                 else if (op == CW_O_LINK && c_files == 0)
1309                         exit(0);
1310         }
1311 
1312         if (model != NULL)
1313                 newae(ctx->i_ae, model);
1314         if (!nolibc)
1315                 newae(ctx->i_ae, "-lc");
1316         if (!seen_o && (ctx->i_flags & CW_F_SHADOW)) {
1317                 ctx->i_discard = discard_file_name(NULL);
1318 
1319                 if (ctx->i_discard == NULL)
1320                         nomem();
1321                 newae(ctx->i_ae, "-o");
1322                 newae(ctx->i_ae, ctx->i_discard);
1323         }
1324 }
1325 
1326 static void
1327 do_cc(cw_ictx_t *ctx)
1328 {
1329         int in_output = 0, seen_o = 0, c_files = 0;
1330         cw_op_t op = CW_O_LINK;
1331         char *nameflag;
1332 
1333         if (ctx->i_flags & CW_F_PROG) {
1334                 newae(ctx->i_ae, "-V");
1335                 return;
1336         }
1337 
1338         if (asprintf(&nameflag, "-_%s=", ctx->i_compiler->c_name) == -1)
1339                 nomem();
1340 
1341         while (--ctx->i_oldargc > 0) {
1342                 char *arg = *++ctx->i_oldargv;
1343                 size_t arglen = strlen(arg);
1344 
1345                 if (strncmp(arg, "-_CC=", 5) == 0) {
1346                         newae(ctx->i_ae, strchr(arg, '=') + 1);
1347                         continue;
1348                 }
1349 
1350                 if (*arg != '-') {
1351                         if (!in_output && arglen > 2 &&
1352                             arg[arglen - 2] == '.' &&
1353                             (arg[arglen - 1] == 'S' || arg[arglen - 1] == 's' ||
1354                             arg[arglen - 1] == 'c' || arg[arglen - 1] == 'i'))
1355                                 c_files++;
1356 
1357                         if (in_output == 0 || !(ctx->i_flags & CW_F_SHADOW)) {
1358                                 newae(ctx->i_ae, arg);
1359                         } else {
1360                                 in_output = 0;
1361                                 ctx->i_discard = discard_file_name(arg);
1362                                 if (ctx->i_discard == NULL)
1363                                         nomem();
1364                                 newae(ctx->i_ae, ctx->i_discard);
1365                         }
1366                         continue;
1367                 }
1368                 switch (*(arg + 1)) {
1369                 case '_':
1370                         if ((strncmp(arg, nameflag, strlen(nameflag)) == 0) ||
1371                             (strncmp(arg, "-_cc=", 5) == 0) ||
1372                             (strncmp(arg, "-_sun=", 6) == 0)) {
1373                                 newae(ctx->i_ae, strchr(arg, '=') + 1);
1374                         }
1375                         break;
1376 
1377                 case 'V':
1378                         ctx->i_flags &= ~CW_F_ECHO;
1379                         newae(ctx->i_ae, arg);
1380                         break;
1381                 case 'o':
1382                         seen_o = 1;
1383                         if (strlen(arg) == 2) {
1384                                 in_output = 1;
1385                                 newae(ctx->i_ae, arg);
1386                         } else if (ctx->i_flags & CW_F_SHADOW) {
1387                                 newae(ctx->i_ae, "-o");
1388                                 ctx->i_discard = discard_file_name(arg);
1389                                 if (ctx->i_discard == NULL)
1390                                         nomem();
1391                                 newae(ctx->i_ae, ctx->i_discard);
1392                         } else {
1393                                 newae(ctx->i_ae, arg);
1394                         }
1395                         break;
1396                 case 'c':
1397                 case 'S':
1398                         if (strlen(arg) == 2)
1399                                 op = CW_O_COMPILE;
1400                         newae(ctx->i_ae, arg);
1401                         break;
1402                 case 'E':
1403                 case 'P':
1404                         if (strlen(arg) == 2)
1405                                 op = CW_O_PREPROCESS;
1406                 /*FALLTHROUGH*/
1407                 default:
1408                         newae(ctx->i_ae, arg);
1409                 }
1410         }
1411 
1412         free(nameflag);
1413 
1414         /* See the comment on this same code in do_gcc() */
1415         if (c_files > 1 && op != CW_O_PREPROCESS) {
1416                 errx(2, "multiple source files are "
1417                     "allowed only with -E or -P");
1418         }
1419 
1420         if (ctx->i_flags & CW_F_SHADOW) {
1421                 if (op == CW_O_PREPROCESS)
1422                         exit(0);
1423                 else if (op == CW_O_LINK && c_files == 0)
1424                         exit(0);
1425         }
1426 
1427         if (!seen_o && (ctx->i_flags & CW_F_SHADOW)) {
1428                 newae(ctx->i_ae, "-o");
1429                 ctx->i_discard = discard_file_name(NULL);
1430 
1431                 if (ctx->i_discard == NULL)
1432                         nomem();
1433                 newae(ctx->i_ae, ctx->i_discard);
1434         }
1435 }
1436 
1437 static void
1438 prepctx(cw_ictx_t *ctx)
1439 {
1440         newae(ctx->i_ae, ctx->i_compiler->c_path);
1441 
1442         if (ctx->i_flags & CW_F_PROG) {
1443                 (void) printf("%s: %s\n", (ctx->i_flags & CW_F_SHADOW) ?
1444                     "shadow" : "primary", ctx->i_compiler->c_path);
1445                 (void) fflush(stdout);
1446         }
1447 
1448         if (!(ctx->i_flags & CW_F_XLATE))
1449                 return;
1450 
1451         switch (ctx->i_compiler->c_style) {
1452         case SUN:
1453                 do_cc(ctx);
1454                 break;
1455         case GNU:
1456                 do_gcc(ctx);
1457                 break;
1458         }
1459 }
1460 
1461 static int
1462 invoke(cw_ictx_t *ctx)
1463 {
1464         char **newargv;
1465         int ac;
1466         struct ae *a;
1467 
1468         if ((newargv = calloc(sizeof (*newargv), ctx->i_ae->ael_argc + 1)) ==
1469             NULL)
1470                 nomem();
1471 
1472         if (ctx->i_flags & CW_F_ECHO)
1473                 (void) fprintf(stderr, "+ ");
1474 
1475         for (ac = 0, a = ctx->i_ae->ael_head; a; a = a->ae_next, ac++) {
1476                 newargv[ac] = a->ae_arg;
1477                 if (ctx->i_flags & CW_F_ECHO)
1478                         (void) fprintf(stderr, "%s ", a->ae_arg);
1479                 if (a == ctx->i_ae->ael_tail)
1480                         break;
1481         }
1482 
1483         if (ctx->i_flags & CW_F_ECHO) {
1484                 (void) fprintf(stderr, "\n");
1485                 (void) fflush(stderr);
1486         }
1487 
1488         if (!(ctx->i_flags & CW_F_EXEC))
1489                 return (0);
1490 
1491         /*
1492          * We must fix up the environment here so that the dependency files are
1493          * not trampled by the shadow compiler. Also take care of GCC
1494          * environment variables that will throw off gcc. This assumes a primary
1495          * gcc.
1496          */
1497         if ((ctx->i_flags & CW_F_SHADOW) &&
1498             (unsetenv("SUNPRO_DEPENDENCIES") != 0 ||
1499             unsetenv("DEPENDENCIES_OUTPUT") != 0 ||
1500             unsetenv("GCC_ROOT") != 0)) {
1501                 (void) fprintf(stderr, "error: environment setup failed: %s\n",
1502                     strerror(errno));
1503                 return (-1);
1504         }
1505 
1506         (void) execv(newargv[0], newargv);
1507         warn("couldn't run %s", newargv[0]);
1508 
1509         return (-1);
1510 }
1511 
1512 static int
1513 reap(cw_ictx_t *ctx)
1514 {
1515         int status, ret = 0;
1516         char buf[1024];
1517         struct stat s;
1518 
1519         /*
1520          * Only wait for one specific child.
1521          */
1522         if (ctx->i_pid <= 0)
1523                 return (-1);
1524 
1525         do {
1526                 if (waitpid(ctx->i_pid, &status, 0) < 0) {
1527                         warn("cannot reap child");
1528                         return (-1);
1529                 }
1530                 if (status != 0) {
1531                         if (WIFSIGNALED(status)) {
1532                                 ret = -WTERMSIG(status);
1533                                 break;
1534                         } else if (WIFEXITED(status)) {
1535                                 ret = WEXITSTATUS(status);
1536                                 break;
1537                         }
1538                 }
1539         } while (!WIFEXITED(status) && !WIFSIGNALED(status));
1540 
1541         (void) unlink(ctx->i_discard);
1542         free(ctx->i_discard);
1543 
1544         if (stat(ctx->i_stderr, &s) < 0) {
1545                 warn("stat failed on child cleanup");
1546                 return (-1);
1547         }
1548         if (s.st_size != 0) {
1549                 FILE *f;
1550 
1551                 if ((f = fopen(ctx->i_stderr, "r")) != NULL) {
1552                         while (fgets(buf, sizeof (buf), f))
1553                                 (void) fprintf(stderr, "%s", buf);
1554                         (void) fflush(stderr);
1555                         (void) fclose(f);
1556                 }
1557         }
1558         (void) unlink(ctx->i_stderr);
1559         free(ctx->i_stderr);
1560 
1561         /*
1562          * cc returns an error code when given -V; we want that to succeed.
1563          */
1564         if (ctx->i_flags & CW_F_PROG)
1565                 return (0);
1566 
1567         return (ret);
1568 }
1569 
1570 static int
1571 exec_ctx(cw_ictx_t *ctx, int block)
1572 {
1573         if ((ctx->i_stderr = tempnam(NULL, ".cw")) == NULL) {
1574                 nomem();
1575                 return (-1);
1576         }
1577 
1578         if ((ctx->i_pid = fork()) == 0) {
1579                 int fd;
1580 
1581                 (void) fclose(stderr);
1582                 if ((fd = open(ctx->i_stderr, O_WRONLY | O_CREAT | O_EXCL,
1583                     0666)) < 0) {
1584                         err(1, "open failed for standard error");
1585                 }
1586                 if (dup2(fd, 2) < 0) {
1587                         err(1, "dup2 failed for standard error");
1588                 }
1589                 if (fd != 2)
1590                         (void) close(fd);
1591                 if (freopen("/dev/fd/2", "w", stderr) == NULL) {
1592                         err(1, "freopen failed for /dev/fd/2");
1593                 }
1594 
1595                 prepctx(ctx);
1596                 exit(invoke(ctx));
1597         }
1598 
1599         if (ctx->i_pid < 0) {
1600                 err(1, "fork failed");
1601         }
1602 
1603         if (block)
1604                 return (reap(ctx));
1605 
1606         return (0);
1607 }
1608 
1609 static void
1610 parse_compiler(const char *spec, cw_compiler_t *compiler)
1611 {
1612         char *tspec, *token;
1613 
1614         if ((tspec = strdup(spec)) == NULL)
1615                 nomem();
1616 
1617         if ((token = strsep(&tspec, ",")) == NULL)
1618                 errx(1, "Compiler is missing a name: %s", spec);
1619         compiler->c_name = token;
1620 
1621         if ((token = strsep(&tspec, ",")) == NULL)
1622                 errx(1, "Compiler is missing a path: %s", spec);
1623         compiler->c_path = token;
1624 
1625         if ((token = strsep(&tspec, ",")) == NULL)
1626                 errx(1, "Compiler is missing a style: %s", spec);
1627 
1628         if ((strcasecmp(token, "gnu") == 0) ||
1629             (strcasecmp(token, "gcc") == 0))
1630                 compiler->c_style = GNU;
1631         else if ((strcasecmp(token, "sun") == 0) ||
1632             (strcasecmp(token, "cc") == 0))
1633                 compiler->c_style = SUN;
1634         else
1635                 errx(1, "unknown compiler style: %s", token);
1636 
1637         if (tspec != NULL)
1638                 errx(1, "Excess tokens in compiler: %s", spec);
1639 }
1640 
1641 int
1642 main(int argc, char **argv)
1643 {
1644         int ch;
1645         cw_compiler_t primary = { NULL, NULL, 0 };
1646         cw_compiler_t shadows[10];
1647         int nshadows = 0;
1648         int ret = 0;
1649         boolean_t do_serial = B_FALSE;
1650         boolean_t do_exec = B_FALSE;
1651         boolean_t vflg = B_FALSE;
1652         boolean_t Cflg = B_FALSE;
1653         boolean_t cflg = B_FALSE;
1654         boolean_t nflg = B_FALSE;
1655 
1656         cw_ictx_t *main_ctx;
1657 
1658         static struct option longopts[] = {
1659                 { "compiler", no_argument, NULL, 'c' },
1660                 { "noecho", no_argument, NULL, 'n' },
1661                 { "primary", required_argument, NULL, 'p' },
1662                 { "shadow", required_argument, NULL, 's' },
1663                 { "versions", no_argument, NULL, 'v' },
1664                 { NULL, 0, NULL, 0 },
1665         };
1666 
1667 
1668         if ((main_ctx = newictx()) == NULL)
1669                 nomem();
1670 
1671         while ((ch = getopt_long(argc, argv, "C", longopts, NULL)) != -1) {
1672                 switch (ch) {
1673                 case 'c':
1674                         cflg = B_TRUE;
1675                         break;
1676                 case 'C':
1677                         Cflg = B_TRUE;
1678                         break;
1679                 case 'n':
1680                         nflg = B_TRUE;
1681                         break;
1682                 case 'p':
1683                         if (primary.c_path != NULL) {
1684                                 warnx("Only one primary compiler may "
1685                                     "be specified");
1686                                 usage();
1687                         }
1688 
1689                         parse_compiler(optarg, &primary);
1690                         break;
1691                 case 's':
1692                         if (nshadows >= 10)
1693                                 errx(1, "May only use 10 shadows at "
1694                                     "the moment");
1695                         parse_compiler(optarg, &shadows[nshadows]);
1696                         nshadows++;
1697                         break;
1698                 case 'v':
1699                         vflg = B_TRUE;
1700                         break;
1701                 default:
1702                         (void) fprintf(stderr, "Did you forget '--'?\n");
1703                         usage();
1704                 }
1705         }
1706 
1707         if (primary.c_path == NULL) {
1708                 warnx("A primary compiler must be specified");
1709                 usage();
1710         }
1711 
1712         do_serial = (getenv("CW_SHADOW_SERIAL") == NULL) ? B_FALSE : B_TRUE;
1713         do_exec = (getenv("CW_NO_EXEC") == NULL) ? B_TRUE : B_FALSE;
1714 
1715         /* Leave room for argv[0] */
1716         argc -= (optind - 1);
1717         argv += (optind - 1);
1718 
1719         main_ctx->i_oldargc = argc;
1720         main_ctx->i_oldargv = argv;
1721         main_ctx->i_flags = CW_F_XLATE;
1722         if (nflg == 0)
1723                 main_ctx->i_flags |= CW_F_ECHO;
1724         if (do_exec)
1725                 main_ctx->i_flags |= CW_F_EXEC;
1726         if (Cflg)
1727                 main_ctx->i_flags |= CW_F_CXX;
1728         main_ctx->i_compiler = &primary;
1729 
1730         if (cflg) {
1731                 (void) fputs(primary.c_path, stdout);
1732         }
1733 
1734         if (vflg) {
1735                 (void) printf("cw version %s\n", CW_VERSION);
1736                 (void) fflush(stdout);
1737                 main_ctx->i_flags &= ~CW_F_ECHO;
1738                 main_ctx->i_flags |= CW_F_PROG | CW_F_EXEC;
1739                 do_serial = 1;
1740         }
1741 
1742         ret |= exec_ctx(main_ctx, do_serial);
1743 
1744         for (int i = 0; i < nshadows; i++) {
1745                 int r;
1746                 cw_ictx_t *shadow_ctx;
1747 
1748                 if ((shadow_ctx = newictx()) == NULL)
1749                         nomem();
1750 
1751                 memcpy(shadow_ctx, main_ctx, sizeof (cw_ictx_t));
1752 
1753                 shadow_ctx->i_flags |= CW_F_SHADOW;
1754                 shadow_ctx->i_compiler = &shadows[i];
1755 
1756                 r = exec_ctx(shadow_ctx, do_serial);
1757                 if (r == 0) {
1758                         shadow_ctx->i_next = main_ctx->i_next;
1759                         main_ctx->i_next = shadow_ctx;
1760                 }
1761                 ret |= r;
1762         }
1763 
1764         if (!do_serial) {
1765                 cw_ictx_t *next = main_ctx;
1766                 while (next != NULL) {
1767                         cw_ictx_t *toreap = next;
1768                         next = next->i_next;
1769                         ret |= reap(toreap);
1770                 }
1771         }
1772 
1773         return (ret);
1774 }