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[MAXPATHLEN];
 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 /* ARGSUSED */
 483 static void
 484 Xamode(struct aelist __unused *h)
 485 {
 486 }
 487 
 488 static void
 489 Xsmode(struct aelist *h)
 490 {
 491         static int xsonce;
 492 
 493         if (xsonce++)
 494                 return;
 495 
 496         newae(h, "-traditional");
 497         newae(h, "-traditional-cpp");
 498 }
 499 
 500 static void
 501 usage()
 502 {
 503         extern char *__progname;
 504         (void) fprintf(stderr,
 505             "usage: %s [-C] [--versions] --primary <compiler> "
 506             "[--shadow <compiler>]... -- cflags...\n",
 507             __progname);
 508         (void) fprintf(stderr, "compilers take the form: name,path,style\n"
 509             " - name: a unique name usable in flag specifiers\n"
 510             " - path: path to the compiler binary\n"
 511             " - style: the style of flags expected: either sun or gnu\n");
 512         exit(2);
 513 }
 514 
 515 static int
 516 xlate_xtb(struct aelist *h, const char *xarg)
 517 {
 518         int     i, j;
 519 
 520         for (i = 0; i < xtbl_size; i++) {
 521                 if (strcmp(xtbl[i].x_arg, xarg) == 0)
 522                         break;
 523         }
 524 
 525         /*
 526          * At the end of the table and so no matching "arg" entry
 527          * found and so this must be a bad -xarch= flag.
 528          */
 529         if (i == xtbl_size)
 530                 error(xarg);
 531 
 532         for (j = 0; j < TRANS_ENTRY; j++) {
 533                 if (xtbl[i].x_trans[j] != NULL)
 534                         newae(h, xtbl[i].x_trans[j]);
 535                 else
 536                         break;
 537         }
 538         return (xtbl[i].x_flags);
 539 
 540 }
 541 
 542 static void
 543 xlate(struct aelist *h, const char *xarg, const char **table)
 544 {
 545         while (*table != NULL && strcmp(xarg, *table) != 0) {
 546                 while (*table != NULL)
 547                         table++;
 548                 table++;
 549         }
 550 
 551         if (*table == NULL)
 552                 error(xarg);
 553 
 554         table++;
 555 
 556         while (*table != NULL) {
 557                 newae(h, *table);
 558                 table++;
 559         }
 560 }
 561 
 562 static void
 563 do_gcc(cw_ictx_t *ctx)
 564 {
 565         int c;
 566         int nolibc = 0;
 567         int in_output = 0, seen_o = 0, c_files = 0;
 568         cw_op_t op = CW_O_LINK;
 569         char *model = NULL;
 570         char *nameflag;
 571         int     mflag = 0;
 572 
 573         if (ctx->i_flags & CW_F_PROG) {
 574                 newae(ctx->i_ae, "--version");
 575                 return;
 576         }
 577 
 578         newae(ctx->i_ae, "-fident");
 579         newae(ctx->i_ae, "-finline");
 580         newae(ctx->i_ae, "-fno-inline-functions");
 581         newae(ctx->i_ae, "-fno-builtin");
 582         newae(ctx->i_ae, "-fno-asm");
 583         newae(ctx->i_ae, "-fdiagnostics-show-option");
 584         newae(ctx->i_ae, "-nodefaultlibs");
 585 
 586 #if defined(__sparc)
 587         /*
 588          * The SPARC ldd and std instructions require 8-byte alignment of
 589          * their address operand.  gcc correctly uses them only when the
 590          * ABI requires 8-byte alignment; unfortunately we have a number of
 591          * pieces of buggy code that doesn't conform to the ABI.  This
 592          * flag makes gcc work more like Studio with -xmemalign=4.
 593          */
 594         newae(ctx->i_ae, "-mno-integer-ldd-std");
 595 #endif
 596 
 597         /*
 598          * This is needed because 'u' is defined
 599          * under a conditional on 'sun'.  Should
 600          * probably just remove the conditional,
 601          * or make it be dependent on '__sun'.
 602          *
 603          * -Dunix is also missing in enhanced ANSI mode
 604          */
 605         newae(ctx->i_ae, "-D__sun");
 606 
 607         if (asprintf(&nameflag, "-_%s=", ctx->i_compiler->c_name) == -1)
 608                 nomem();
 609 
 610         /*
 611          * Walk the argument list, translating as we go ..
 612          */
 613         while (--ctx->i_oldargc > 0) {
 614                 char *arg = *++ctx->i_oldargv;
 615                 size_t arglen = strlen(arg);
 616 
 617                 if (*arg == '-') {
 618                         arglen--;
 619                 } else {
 620                         /*
 621                          * Discard inline files that gcc doesn't grok
 622                          */
 623                         if (!in_output && arglen > 3 &&
 624                             strcmp(arg + arglen - 3, ".il") == 0)
 625                                 continue;
 626 
 627                         if (!in_output && arglen > 2 &&
 628                             arg[arglen - 2] == '.' &&
 629                             (arg[arglen - 1] == 'S' || arg[arglen - 1] == 's' ||
 630                             arg[arglen - 1] == 'c' || arg[arglen - 1] == 'i'))
 631                                 c_files++;
 632 
 633                         /*
 634                          * Otherwise, filenames and partial arguments
 635                          * are passed through for gcc to chew on.  However,
 636                          * output is always discarded for the secondary
 637                          * compiler.
 638                          */
 639                         if ((ctx->i_flags & CW_F_SHADOW) && in_output)
 640                                 newae(ctx->i_ae, ctx->i_discard);
 641                         else
 642                                 newae(ctx->i_ae, arg);
 643                         in_output = 0;
 644                         continue;
 645                 }
 646 
 647                 if (ctx->i_flags & CW_F_CXX) {
 648                         if (strncmp(arg, "-_g++=", 6) == 0) {
 649                                 newae(ctx->i_ae, strchr(arg, '=') + 1);
 650                                 continue;
 651                         }
 652                         if (strncmp(arg, "-compat=", 8) == 0) {
 653                                 /* discard -compat=4 and -compat=5 */
 654                                 continue;
 655                         }
 656                         if (strcmp(arg, "-Qoption") == 0) {
 657                                 /* discard -Qoption and its two arguments */
 658                                 if (ctx->i_oldargc < 3)
 659                                         error(arg);
 660                                 ctx->i_oldargc -= 2;
 661                                 ctx->i_oldargv += 2;
 662                                 continue;
 663                         }
 664                         if (strcmp(arg, "-xwe") == 0) {
 665                                 /* turn warnings into errors */
 666                                 newae(ctx->i_ae, "-Werror");
 667                                 continue;
 668                         }
 669                         if (strcmp(arg, "-norunpath") == 0) {
 670                                 /* gcc has no corresponding option */
 671                                 continue;
 672                         }
 673                         if (strcmp(arg, "-nolib") == 0) {
 674                                 /* -nodefaultlibs is on by default */
 675                                 nolibc = 1;
 676                                 continue;
 677                         }
 678 #if defined(__sparc)
 679                         if (strcmp(arg, "-cg92") == 0) {
 680                                 mflag |= xlate_xtb(ctx->i_ae, "v8");
 681                                 xlate(ctx->i_ae, "super", xchip_tbl);
 682                                 continue;
 683                         }
 684 #endif  /* __sparc */
 685                 }
 686 
 687                 switch ((c = arg[1])) {
 688                 case '_':
 689                         if ((strncmp(arg, nameflag, strlen(nameflag)) == 0) ||
 690                             (strncmp(arg, "-_gcc=", 6) == 0) ||
 691                             (strncmp(arg, "-_gnu=", 6) == 0)) {
 692                                 newae(ctx->i_ae, strchr(arg, '=') + 1);
 693                         }
 694                         break;
 695                 case '#':
 696                         if (arglen == 1) {
 697                                 newae(ctx->i_ae, "-v");
 698                                 break;
 699                         }
 700                         error(arg);
 701                         break;
 702                 case 'f':
 703                         if ((strcmp(arg, "-fpic") == 0) ||
 704                             (strcmp(arg, "-fPIC") == 0)) {
 705                                 newae(ctx->i_ae, arg);
 706                                 break;
 707                         }
 708                         error(arg);
 709                         break;
 710                 case 'g':
 711                         newae(ctx->i_ae, "-gdwarf-2");
 712                         break;
 713                 case 'E':
 714                         if (arglen == 1) {
 715                                 newae(ctx->i_ae, "-xc");
 716                                 newae(ctx->i_ae, arg);
 717                                 op = CW_O_PREPROCESS;
 718                                 nolibc = 1;
 719                                 break;
 720                         }
 721                         error(arg);
 722                         break;
 723                 case 'c':
 724                 case 'S':
 725                         if (arglen == 1) {
 726                                 op = CW_O_COMPILE;
 727                                 nolibc = 1;
 728                         }
 729                         /* FALLTHROUGH */
 730                 case 'C':
 731                 case 'H':
 732                 case 'p':
 733                         if (arglen == 1) {
 734                                 newae(ctx->i_ae, arg);
 735                                 break;
 736                         }
 737                         error(arg);
 738                         break;
 739                 case 'A':
 740                 case 'h':
 741                 case 'I':
 742                 case 'i':
 743                 case 'L':
 744                 case 'l':
 745                 case 'R':
 746                 case 'U':
 747                 case 'u':
 748                 case 'w':
 749                         newae(ctx->i_ae, arg);
 750                         break;
 751                 case 'o':
 752                         seen_o = 1;
 753                         if (arglen == 1) {
 754                                 in_output = 1;
 755                                 newae(ctx->i_ae, arg);
 756                         } else if (ctx->i_flags & CW_F_SHADOW) {
 757                                 newae(ctx->i_ae, "-o");
 758                                 newae(ctx->i_ae, ctx->i_discard);
 759                         } else {
 760                                 newae(ctx->i_ae, arg);
 761                         }
 762                         break;
 763                 case 'D':
 764                         newae(ctx->i_ae, arg);
 765                         /*
 766                          * XXX  Clearly a hack ... do we need _KADB too?
 767                          */
 768                         if (strcmp(arg, "-D_KERNEL") == 0 ||
 769                             strcmp(arg, "-D_BOOT") == 0)
 770                                 newae(ctx->i_ae, "-ffreestanding");
 771                         break;
 772                 case 'd':
 773                         if (arglen == 2) {
 774                                 if (strcmp(arg, "-dy") == 0) {
 775                                         newae(ctx->i_ae, "-Wl,-dy");
 776                                         break;
 777                                 }
 778                                 if (strcmp(arg, "-dn") == 0) {
 779                                         newae(ctx->i_ae, "-Wl,-dn");
 780                                         break;
 781                                 }
 782                         }
 783                         if (strcmp(arg, "-dalign") == 0) {
 784                                 /*
 785                                  * -dalign forces alignment in some cases;
 786                                  * gcc does not need any flag to do this.
 787                                  */
 788                                 break;
 789                         }
 790                         error(arg);
 791                         break;
 792                 case 'e':
 793                         if (strcmp(arg,
 794                             "-erroff=E_EMPTY_TRANSLATION_UNIT") == 0) {
 795                                 /*
 796                                  * Accept but ignore this -- gcc doesn't
 797                                  * seem to complain about empty translation
 798                                  * units
 799                                  */
 800                                 break;
 801                         }
 802                         /* XX64 -- ignore all -erroff= options, for now */
 803                         if (strncmp(arg, "-erroff=", 8) == 0)
 804                                 break;
 805                         if (strcmp(arg, "-errtags=yes") == 0) {
 806                                 warnings(ctx->i_ae);
 807                                 break;
 808                         }
 809                         if (strcmp(arg, "-errwarn=%all") == 0) {
 810                                 newae(ctx->i_ae, "-Werror");
 811                                 break;
 812                         }
 813                         error(arg);
 814                         break;
 815                 case 'G':
 816                         newae(ctx->i_ae, "-shared");
 817                         nolibc = 1;
 818                         break;
 819                 case 'k':
 820                         if (strcmp(arg, "-keeptmp") == 0) {
 821                                 newae(ctx->i_ae, "-save-temps");
 822                                 break;
 823                         }
 824                         error(arg);
 825                         break;
 826                 case 'm':
 827                         if (strcmp(arg, "-mt") == 0) {
 828                                 newae(ctx->i_ae, "-D_REENTRANT");
 829                                 break;
 830                         }
 831                         if (strcmp(arg, "-m64") == 0) {
 832                                 newae(ctx->i_ae, "-m64");
 833 #if defined(__x86)
 834                                 newae(ctx->i_ae, "-mtune=opteron");
 835 #endif
 836                                 mflag |= M64;
 837                                 break;
 838                         }
 839                         if (strcmp(arg, "-m32") == 0) {
 840                                 newae(ctx->i_ae, "-m32");
 841                                 mflag |= M32;
 842                                 break;
 843                         }
 844                         error(arg);
 845                         break;
 846                 case 'B':       /* linker options */
 847                 case 'M':
 848                 case 'z':
 849                         {
 850                                 char *opt;
 851                                 size_t len;
 852                                 char *s;
 853 
 854                                 if (arglen == 1) {
 855                                         opt = *++ctx->i_oldargv;
 856                                         if (opt == NULL || *opt == '\0')
 857                                                 error(arg);
 858                                         ctx->i_oldargc--;
 859                                 } else {
 860                                         opt = arg + 2;
 861                                 }
 862                                 len = strlen(opt) + 7;
 863                                 if ((s = malloc(len)) == NULL)
 864                                         nomem();
 865                                 (void) snprintf(s, len, "-Wl,-%c%s", c, opt);
 866                                 newae(ctx->i_ae, s);
 867                                 free(s);
 868                         }
 869                         break;
 870                 case 'O':
 871                         if (arglen == 1) {
 872                                 newae(ctx->i_ae, "-O");
 873                                 break;
 874                         }
 875                         error(arg);
 876                         break;
 877                 case 'P':
 878                         /*
 879                          * We could do '-E -o filename.i', but that's hard,
 880                          * and we don't need it for the case that's triggering
 881                          * this addition.  We'll require the user to specify
 882                          * -o in the Makefile.  If they don't they'll find out
 883                          * in a hurry.
 884                          */
 885                         newae(ctx->i_ae, "-E");
 886                         op = CW_O_PREPROCESS;
 887                         nolibc = 1;
 888                         break;
 889                 case 's':
 890                         if (arglen == 1) {
 891                                 newae(ctx->i_ae, "-Wl,-s");
 892                                 break;
 893                         }
 894                         error(arg);
 895                         break;
 896                 case 't':
 897                         if (arglen == 1) {
 898                                 newae(ctx->i_ae, "-Wl,-t");
 899                                 break;
 900                         }
 901                         error(arg);
 902                         break;
 903                 case 'V':
 904                         if (arglen == 1) {
 905                                 ctx->i_flags &= ~CW_F_ECHO;
 906                                 newae(ctx->i_ae, "--version");
 907                                 break;
 908                         }
 909                         error(arg);
 910                         break;
 911                 case 'v':
 912                         if (arglen == 1) {
 913                                 warnings(ctx->i_ae);
 914                                 break;
 915                         }
 916                         error(arg);
 917                         break;
 918                 case 'W':
 919                         if (strncmp(arg, "-Wp,-xc99", 9) == 0) {
 920                                 /*
 921                                  * gcc's preprocessor will accept c99
 922                                  * regardless, so accept and ignore.
 923                                  */
 924                                 break;
 925                         }
 926                         if (strncmp(arg, "-Wa,", 4) == 0 ||
 927                             strncmp(arg, "-Wp,", 4) == 0 ||
 928                             strncmp(arg, "-Wl,", 4) == 0) {
 929                                 newae(ctx->i_ae, arg);
 930                                 break;
 931                         }
 932                         if (strcmp(arg, "-W0,-noglobal") == 0 ||
 933                             strcmp(arg, "-W0,-xglobalstatic") == 0) {
 934                                 /*
 935                                  * gcc doesn't prefix local symbols
 936                                  * in debug mode, so this is not needed.
 937                                  */
 938                                 break;
 939                         }
 940                         if (strcmp(arg, "-W0,-Lt") == 0) {
 941                                 /*
 942                                  * Generate tests at the top of loops.
 943                                  * There is no direct gcc equivalent, ignore.
 944                                  */
 945                                 break;
 946                         }
 947                         if (strcmp(arg, "-W0,-xdbggen=no%usedonly") == 0) {
 948                                 newae(ctx->i_ae,
 949                                     "-fno-eliminate-unused-debug-symbols");
 950                                 newae(ctx->i_ae,
 951                                     "-fno-eliminate-unused-debug-types");
 952                                 break;
 953                         }
 954                         if (strcmp(arg, "-W2,-xwrap_int") == 0) {
 955                                 /*
 956                                  * Use the legacy behaviour (pre-SS11)
 957                                  * for integer wrapping.
 958                                  * gcc does not need this.
 959                                  */
 960                                 break;
 961                         }
 962                         if (strcmp(arg, "-Wd,-xsafe=unboundsym") == 0) {
 963                                 /*
 964                                  * Prevents optimizing away checks for
 965                                  * unbound weak symbol addresses.  gcc does
 966                                  * not do this, so it's not needed.
 967                                  */
 968                                 break;
 969                         }
 970                         if (strncmp(arg, "-Wc,-xcode=", 11) == 0) {
 971                                 xlate(ctx->i_ae, arg + 11, xcode_tbl);
 972                                 break;
 973                         }
 974                         if (strncmp(arg, "-Wc,-Qiselect", 13) == 0) {
 975                                 /*
 976                                  * Prevents insertion of register symbols.
 977                                  * gcc doesn't do this, so ignore it.
 978                                  */
 979                                 break;
 980                         }
 981                         if (strcmp(arg, "-Wc,-Qassembler-ounrefsym=0") == 0) {
 982                                 /*
 983                                  * Prevents optimizing away of static variables.
 984                                  * gcc does not do this, so it's not needed.
 985                                  */
 986                                 break;
 987                         }
 988 #if defined(__x86)
 989                         if (strcmp(arg, "-Wu,-save_args") == 0) {
 990                                 newae(ctx->i_ae, "-msave-args");
 991                                 break;
 992                         }
 993 #endif  /* __x86 */
 994                         error(arg);
 995                         break;
 996                 case 'X':
 997                         if (strcmp(arg, "-Xa") == 0 ||
 998                             strcmp(arg, "-Xt") == 0) {
 999                                 Xamode(ctx->i_ae);
1000                                 break;
1001                         }
1002                         if (strcmp(arg, "-Xs") == 0) {
1003                                 Xsmode(ctx->i_ae);
1004                                 break;
1005                         }
1006                         error(arg);
1007                         break;
1008                 case 'x':
1009                         if (arglen == 1)
1010                                 error(arg);
1011                         switch (arg[2]) {
1012                         case 'a':
1013                                 if (strncmp(arg, "-xarch=", 7) == 0) {
1014                                         mflag |= xlate_xtb(ctx->i_ae, arg + 7);
1015                                         break;
1016                                 }
1017                                 error(arg);
1018                                 break;
1019                         case 'b':
1020                                 if (strncmp(arg, "-xbuiltin=", 10) == 0) {
1021                                         if (strcmp(arg + 10, "%all"))
1022                                                 newae(ctx->i_ae, "-fbuiltin");
1023                                         break;
1024                                 }
1025                                 error(arg);
1026                                 break;
1027                         case 'C':
1028                                 /* Accept C++ style comments -- ignore */
1029                                 if (strcmp(arg, "-xCC") == 0)
1030                                         break;
1031                                 error(arg);
1032                                 break;
1033                         case 'c':
1034                                 if (strncmp(arg, "-xc99=%all", 10) == 0) {
1035                                         newae(ctx->i_ae, "-std=gnu99");
1036                                         break;
1037                                 }
1038                                 if (strncmp(arg, "-xc99=%none", 11) == 0) {
1039                                         newae(ctx->i_ae, "-std=gnu89");
1040                                         break;
1041                                 }
1042                                 if (strncmp(arg, "-xchip=", 7) == 0) {
1043                                         xlate(ctx->i_ae, arg + 7, xchip_tbl);
1044                                         break;
1045                                 }
1046                                 if (strncmp(arg, "-xcode=", 7) == 0) {
1047                                         xlate(ctx->i_ae, arg + 7, xcode_tbl);
1048                                         break;
1049                                 }
1050                                 if (strncmp(arg, "-xcrossfile", 11) == 0)
1051                                         break;
1052                                 error(arg);
1053                                 break;
1054                         case 'd':
1055                                 if (strncmp(arg, "-xdebugformat=", 14) == 0)
1056                                         break;
1057                                 error(arg);
1058                                 break;
1059                         case 'F':
1060                                 /*
1061                                  * Compile for mapfile reordering, or unused
1062                                  * section elimination, syntax can be -xF or
1063                                  * more complex, like -xF=%all -- ignore.
1064                                  */
1065                                 if (strncmp(arg, "-xF", 3) == 0)
1066                                         break;
1067                                 error(arg);
1068                                 break;
1069                         case 'i':
1070                                 if (strncmp(arg, "-xinline", 8) == 0)
1071                                         /* No inlining; ignore */
1072                                         break;
1073                                 if (strcmp(arg, "-xildon") == 0 ||
1074                                     strcmp(arg, "-xildoff") == 0)
1075                                         /* No incremental linking; ignore */
1076                                         break;
1077                                 error(arg);
1078                                 break;
1079 #if defined(__x86)
1080                         case 'm':
1081                                 if (strcmp(arg, "-xmodel=kernel") == 0) {
1082                                         newae(ctx->i_ae, "-ffreestanding");
1083                                         newae(ctx->i_ae, "-mno-red-zone");
1084                                         model = "-mcmodel=kernel";
1085                                         nolibc = 1;
1086                                         break;
1087                                 }
1088                                 error(arg);
1089                                 break;
1090 #endif  /* __x86 */
1091                         case 'O':
1092                                 if (strncmp(arg, "-xO", 3) == 0) {
1093                                         size_t len = strlen(arg);
1094                                         char *s = NULL;
1095                                         int c = *(arg + 3);
1096                                         int level;
1097 
1098                                         if (len != 4 || !isdigit(c))
1099                                                 error(arg);
1100 
1101                                         level = atoi(arg + 3);
1102                                         if (level > 5)
1103                                                 error(arg);
1104                                         if (level >= 2) {
1105                                                 /*
1106                                                  * For gcc-3.4.x at -O2 we
1107                                                  * need to disable optimizations
1108                                                  * that break ON.
1109                                                  */
1110                                                 optim_disable(ctx->i_ae, level);
1111                                                 /*
1112                                                  * limit -xO3 to -O2 as well.
1113                                                  */
1114                                                 level = 2;
1115                                         }
1116                                         if (asprintf(&s, "-O%d", level) == -1)
1117                                                 nomem();
1118                                         newae(ctx->i_ae, s);
1119                                         free(s);
1120                                         break;
1121                                 }
1122                                 error(arg);
1123                                 break;
1124                         case 'r':
1125                                 if (strncmp(arg, "-xregs=", 7) == 0) {
1126                                         xlate(ctx->i_ae, arg + 7, xregs_tbl);
1127                                         break;
1128                                 }
1129                                 error(arg);
1130                                 break;
1131                         case 's':
1132                                 if (strcmp(arg, "-xs") == 0 ||
1133                                     strcmp(arg, "-xspace") == 0 ||
1134                                     strcmp(arg, "-xstrconst") == 0)
1135                                         break;
1136                                 error(arg);
1137                                 break;
1138                         case 't':
1139                                 if (strncmp(arg, "-xtarget=", 9) == 0) {
1140                                         xlate(ctx->i_ae, arg + 9, xtarget_tbl);
1141                                         break;
1142                                 }
1143                                 error(arg);
1144                                 break;
1145                         case 'e':
1146                         case 'h':
1147                         case 'l':
1148                         default:
1149                                 error(arg);
1150                                 break;
1151                         }
1152                         break;
1153                 case 'Y':
1154                         if (arglen == 1) {
1155                                 if ((arg = *++ctx->i_oldargv) == NULL ||
1156                                     *arg == '\0')
1157                                         error("-Y");
1158                                 ctx->i_oldargc--;
1159                                 arglen = strlen(arg + 1);
1160                         } else {
1161                                 arg += 2;
1162                         }
1163                         /* Just ignore -YS,... for now */
1164                         if (strncmp(arg, "S,", 2) == 0)
1165                                 break;
1166                         if (strncmp(arg, "l,", 2) == 0) {
1167                                 char *s = strdup(arg);
1168                                 s[0] = '-';
1169                                 s[1] = 'B';
1170                                 newae(ctx->i_ae, s);
1171                                 free(s);
1172                                 break;
1173                         }
1174                         if (strncmp(arg, "I,", 2) == 0) {
1175                                 char *s = strdup(arg);
1176                                 s[0] = '-';
1177                                 s[1] = 'I';
1178                                 newae(ctx->i_ae, "-nostdinc");
1179                                 newae(ctx->i_ae, s);
1180                                 free(s);
1181                                 break;
1182                         }
1183                         error(arg);
1184                         break;
1185                 case 'Q':
1186                         /*
1187                          * We could map -Qy into -Wl,-Qy etc.
1188                          */
1189                 default:
1190                         error(arg);
1191                         break;
1192                 }
1193         }
1194 
1195         free(nameflag);
1196 
1197         if (c_files > 1 && (ctx->i_flags & CW_F_SHADOW) &&
1198             op != CW_O_PREPROCESS) {
1199                 errx(2, "multiple source files are "
1200                     "allowed only with -E or -P");
1201         }
1202 
1203         /*
1204          * Make sure that we do not have any unintended interactions between
1205          * the xarch options passed in and the version of the Studio compiler
1206          * used.
1207          */
1208         if ((mflag & (SS11|SS12)) == (SS11|SS12)) {
1209                 errx(2,
1210                     "Conflicting \"-xarch=\" flags (both Studio 11 and 12)\n");
1211         }
1212 
1213         switch (mflag) {
1214         case 0:
1215                 /* FALLTHROUGH */
1216         case M32:
1217 #if defined(__sparc)
1218                 /*
1219                  * Only -m32 is defined and so put in the missing xarch
1220                  * translation.
1221                  */
1222                 newae(ctx->i_ae, "-mcpu=v8");
1223                 newae(ctx->i_ae, "-mno-v8plus");
1224 #endif
1225                 break;
1226         case M64:
1227 #if defined(__sparc)
1228                 /*
1229                  * Only -m64 is defined and so put in the missing xarch
1230                  * translation.
1231                  */
1232                 newae(ctx->i_ae, "-mcpu=v9");
1233 #endif
1234                 break;
1235         case SS12:
1236 #if defined(__sparc)
1237                 /* no -m32/-m64 flag used - this is an error for sparc builds */
1238                 (void) fprintf(stderr, "No -m32/-m64 flag defined\n");
1239                 exit(2);
1240 #endif
1241                 break;
1242         case SS11:
1243                 /* FALLTHROUGH */
1244         case (SS11|M32):
1245         case (SS11|M64):
1246                 break;
1247         case (SS12|M32):
1248 #if defined(__sparc)
1249                 /*
1250                  * Need to add in further 32 bit options because with SS12
1251                  * the xarch=sparcvis option can be applied to 32 or 64
1252                  * bit, and so the translatation table (xtbl) cannot handle
1253                  * that.
1254                  */
1255                 newae(ctx->i_ae, "-mv8plus");
1256 #endif
1257                 break;
1258         case (SS12|M64):
1259                 break;
1260         default:
1261                 (void) fprintf(stderr,
1262                     "Incompatible -xarch= and/or -m32/-m64 options used.\n");
1263                 exit(2);
1264         }
1265 
1266         if ((op == CW_O_LINK || op == CW_O_PREPROCESS) &&
1267             (ctx->i_flags & CW_F_SHADOW))
1268                 exit(0);
1269 
1270         if (model != NULL)
1271                 newae(ctx->i_ae, model);
1272         if (!nolibc)
1273                 newae(ctx->i_ae, "-lc");
1274         if (!seen_o && (ctx->i_flags & CW_F_SHADOW)) {
1275                 newae(ctx->i_ae, "-o");
1276                 newae(ctx->i_ae, ctx->i_discard);
1277         }
1278 }
1279 
1280 static void
1281 do_cc(cw_ictx_t *ctx)
1282 {
1283         int in_output = 0, seen_o = 0;
1284         cw_op_t op = CW_O_LINK;
1285         char *nameflag;
1286 
1287         if (ctx->i_flags & CW_F_PROG) {
1288                 newae(ctx->i_ae, "-V");
1289                 return;
1290         }
1291 
1292         if (asprintf(&nameflag, "-_%s=", ctx->i_compiler->c_name) == -1)
1293                 nomem();
1294 
1295         while (--ctx->i_oldargc > 0) {
1296                 char *arg = *++ctx->i_oldargv;
1297 
1298                 if (strncmp(arg, "-_CC=", 5) == 0) {
1299                         newae(ctx->i_ae, strchr(arg, '=') + 1);
1300                         continue;
1301                 }
1302 
1303                 if (*arg != '-') {
1304                         if (in_output == 0 || !(ctx->i_flags & CW_F_SHADOW)) {
1305                                 newae(ctx->i_ae, arg);
1306                         } else {
1307                                 in_output = 0;
1308                                 newae(ctx->i_ae, ctx->i_discard);
1309                         }
1310                         continue;
1311                 }
1312                 switch (*(arg + 1)) {
1313                 case '_':
1314                         if ((strncmp(arg, nameflag, strlen(nameflag)) == 0) ||
1315                             (strncmp(arg, "-_cc=", 5) == 0) ||
1316                             (strncmp(arg, "-_sun=", 6) == 0)) {
1317                                 newae(ctx->i_ae, strchr(arg, '=') + 1);
1318                         }
1319                         break;
1320 
1321                 case 'V':
1322                         ctx->i_flags &= ~CW_F_ECHO;
1323                         newae(ctx->i_ae, arg);
1324                         break;
1325                 case 'o':
1326                         seen_o = 1;
1327                         if (strlen(arg) == 2) {
1328                                 in_output = 1;
1329                                 newae(ctx->i_ae, arg);
1330                         } else if (ctx->i_flags & CW_F_SHADOW) {
1331                                 newae(ctx->i_ae, "-o");
1332                                 newae(ctx->i_ae, ctx->i_discard);
1333                         } else {
1334                                 newae(ctx->i_ae, arg);
1335                         }
1336                         break;
1337                 case 'c':
1338                 case 'S':
1339                         if (strlen(arg) == 2)
1340                                 op = CW_O_COMPILE;
1341                         newae(ctx->i_ae, arg);
1342                         break;
1343                 case 'E':
1344                 case 'P':
1345                         if (strlen(arg) == 2)
1346                                 op = CW_O_PREPROCESS;
1347                 /*FALLTHROUGH*/
1348                 default:
1349                         newae(ctx->i_ae, arg);
1350                 }
1351         }
1352 
1353         free(nameflag);
1354 
1355         if ((op == CW_O_LINK || op == CW_O_PREPROCESS) &&
1356             (ctx->i_flags & CW_F_SHADOW))
1357                 exit(0);
1358 
1359         if (!seen_o && (ctx->i_flags & CW_F_SHADOW)) {
1360                 newae(ctx->i_ae, "-o");
1361                 newae(ctx->i_ae, ctx->i_discard);
1362         }
1363 }
1364 
1365 static void
1366 prepctx(cw_ictx_t *ctx)
1367 {
1368         newae(ctx->i_ae, ctx->i_compiler->c_path);
1369 
1370         if (ctx->i_flags & CW_F_PROG) {
1371                 (void) printf("%s: %s\n", (ctx->i_flags & CW_F_SHADOW) ?
1372                     "shadow" : "primary", ctx->i_compiler->c_path);
1373                 (void) fflush(stdout);
1374         }
1375 
1376         if (!(ctx->i_flags & CW_F_XLATE))
1377                 return;
1378 
1379         switch (ctx->i_compiler->c_style) {
1380         case SUN:
1381                 do_cc(ctx);
1382                 break;
1383         case GNU:
1384                 do_gcc(ctx);
1385                 break;
1386         }
1387 }
1388 
1389 static int
1390 invoke(cw_ictx_t *ctx)
1391 {
1392         char **newargv;
1393         int ac;
1394         struct ae *a;
1395 
1396         if ((newargv = calloc(sizeof (*newargv), ctx->i_ae->ael_argc + 1)) ==
1397             NULL)
1398                 nomem();
1399 
1400         if (ctx->i_flags & CW_F_ECHO)
1401                 (void) fprintf(stderr, "+ ");
1402 
1403         for (ac = 0, a = ctx->i_ae->ael_head; a; a = a->ae_next, ac++) {
1404                 newargv[ac] = a->ae_arg;
1405                 if (ctx->i_flags & CW_F_ECHO)
1406                         (void) fprintf(stderr, "%s ", a->ae_arg);
1407                 if (a == ctx->i_ae->ael_tail)
1408                         break;
1409         }
1410 
1411         if (ctx->i_flags & CW_F_ECHO) {
1412                 (void) fprintf(stderr, "\n");
1413                 (void) fflush(stderr);
1414         }
1415 
1416         if (!(ctx->i_flags & CW_F_EXEC))
1417                 return (0);
1418 
1419         /*
1420          * We must fix up the environment here so that the dependency files are
1421          * not trampled by the shadow compiler. Also take care of GCC
1422          * environment variables that will throw off gcc. This assumes a primary
1423          * gcc.
1424          */
1425         if ((ctx->i_flags & CW_F_SHADOW) &&
1426             (unsetenv("SUNPRO_DEPENDENCIES") != 0 ||
1427             unsetenv("DEPENDENCIES_OUTPUT") != 0 ||
1428             unsetenv("GCC_ROOT") != 0)) {
1429                 (void) fprintf(stderr, "error: environment setup failed: %s\n",
1430                     strerror(errno));
1431                 return (-1);
1432         }
1433 
1434         (void) execv(newargv[0], newargv);
1435         warn("couldn't run %s", newargv[0]);
1436 
1437         return (-1);
1438 }
1439 
1440 static int
1441 reap(cw_ictx_t *ctx)
1442 {
1443         int status, ret = 0;
1444         char buf[1024];
1445         struct stat s;
1446 
1447         /*
1448          * Only wait for one specific child.
1449          */
1450         if (ctx->i_pid <= 0)
1451                 return (-1);
1452 
1453         do {
1454                 if (waitpid(ctx->i_pid, &status, 0) < 0) {
1455                         warn("cannot reap child");
1456                         return (-1);
1457                 }
1458                 if (status != 0) {
1459                         if (WIFSIGNALED(status)) {
1460                                 ret = -WTERMSIG(status);
1461                                 break;
1462                         } else if (WIFEXITED(status)) {
1463                                 ret = WEXITSTATUS(status);
1464                                 break;
1465                         }
1466                 }
1467         } while (!WIFEXITED(status) && !WIFSIGNALED(status));
1468 
1469         (void) unlink(ctx->i_discard);
1470 
1471         if (stat(ctx->i_stderr, &s) < 0) {
1472                 warn("stat failed on child cleanup");
1473                 return (-1);
1474         }
1475         if (s.st_size != 0) {
1476                 FILE *f;
1477 
1478                 if ((f = fopen(ctx->i_stderr, "r")) != NULL) {
1479                         while (fgets(buf, sizeof (buf), f))
1480                                 (void) fprintf(stderr, "%s", buf);
1481                         (void) fflush(stderr);
1482                         (void) fclose(f);
1483                 }
1484         }
1485         (void) unlink(ctx->i_stderr);
1486         free(ctx->i_stderr);
1487 
1488         /*
1489          * cc returns an error code when given -V; we want that to succeed.
1490          */
1491         if (ctx->i_flags & CW_F_PROG)
1492                 return (0);
1493 
1494         return (ret);
1495 }
1496 
1497 static int
1498 exec_ctx(cw_ictx_t *ctx, int block)
1499 {
1500         char *file;
1501 
1502         /*
1503          * To avoid offending cc's sensibilities, the name of its output
1504          * file must end in '.o'.
1505          */
1506         if ((file = tempnam(NULL, ".cw")) == NULL) {
1507                 nomem();
1508                 return (-1);
1509         }
1510         (void) strlcpy(ctx->i_discard, file, MAXPATHLEN);
1511         (void) strlcat(ctx->i_discard, ".o", MAXPATHLEN);
1512         free(file);
1513 
1514         if ((ctx->i_stderr = tempnam(NULL, ".cw")) == NULL) {
1515                 nomem();
1516                 return (-1);
1517         }
1518 
1519         if ((ctx->i_pid = fork()) == 0) {
1520                 int fd;
1521 
1522                 (void) fclose(stderr);
1523                 if ((fd = open(ctx->i_stderr, O_WRONLY | O_CREAT | O_EXCL,
1524                     0666)) < 0) {
1525                         err(1, "open failed for standard error");
1526                 }
1527                 if (dup2(fd, 2) < 0) {
1528                         err(1, "dup2 failed for standard error");
1529                 }
1530                 if (fd != 2)
1531                         (void) close(fd);
1532                 if (freopen("/dev/fd/2", "w", stderr) == NULL) {
1533                         err(1, "freopen failed for /dev/fd/2");
1534                 }
1535 
1536                 prepctx(ctx);
1537                 exit(invoke(ctx));
1538         }
1539 
1540         if (ctx->i_pid < 0) {
1541                 err(1, "fork failed");
1542         }
1543 
1544         if (block)
1545                 return (reap(ctx));
1546 
1547         return (0);
1548 }
1549 
1550 static void
1551 parse_compiler(const char *spec, cw_compiler_t *compiler)
1552 {
1553         char *tspec, *token;
1554 
1555         if ((tspec = strdup(spec)) == NULL)
1556                 nomem();
1557 
1558         if ((token = strsep(&tspec, ",")) == NULL)
1559                 errx(1, "Compiler is missing a name: %s", spec);
1560         compiler->c_name = token;
1561 
1562         if ((token = strsep(&tspec, ",")) == NULL)
1563                 errx(1, "Compiler is missing a path: %s", spec);
1564         compiler->c_path = token;
1565 
1566         if ((token = strsep(&tspec, ",")) == NULL)
1567                 errx(1, "Compiler is missing a style: %s", spec);
1568 
1569         if ((strcasecmp(token, "gnu") == 0) ||
1570             (strcasecmp(token, "gcc") == 0))
1571                 compiler->c_style = GNU;
1572         else if ((strcasecmp(token, "sun") == 0) ||
1573             (strcasecmp(token, "cc") == 0))
1574                 compiler->c_style = SUN;
1575         else
1576                 errx(1, "unknown compiler style: %s", token);
1577 
1578         if (tspec != NULL)
1579                 errx(1, "Excess tokens in compiler: %s", spec);
1580 }
1581 
1582 int
1583 main(int argc, char **argv)
1584 {
1585         int ch;
1586         cw_compiler_t primary = { NULL, NULL, 0 };
1587         cw_compiler_t shadows[10];
1588         int nshadows = 0;
1589         int ret = 0;
1590         boolean_t do_serial = B_FALSE;
1591         boolean_t do_exec = B_FALSE;
1592         boolean_t vflg = B_FALSE;
1593         boolean_t Cflg = B_FALSE;
1594         boolean_t cflg = B_FALSE;
1595         boolean_t nflg = B_FALSE;
1596 
1597         cw_ictx_t *main_ctx;
1598 
1599         static struct option longopts[] = {
1600                 { "compiler", no_argument, NULL, 'c' },
1601                 { "noecho", no_argument, NULL, 'n' },
1602                 { "primary", required_argument, NULL, 'p' },
1603                 { "shadow", required_argument, NULL, 's' },
1604                 { "versions", no_argument, NULL, 'v' },
1605                 { NULL, 0, NULL, 0 },
1606         };
1607 
1608 
1609         if ((main_ctx = newictx()) == NULL)
1610                 nomem();
1611 
1612         while ((ch = getopt_long(argc, argv, "C", longopts, NULL)) != -1) {
1613                 switch (ch) {
1614                 case 'c':
1615                         cflg = B_TRUE;
1616                         break;
1617                 case 'C':
1618                         Cflg = B_TRUE;
1619                         break;
1620                 case 'n':
1621                         nflg = B_TRUE;
1622                         break;
1623                 case 'p':
1624                         if (primary.c_path != NULL) {
1625                                 warnx("Only one primary compiler may "
1626                                     "be specified");
1627                                 usage();
1628                         }
1629 
1630                         parse_compiler(optarg, &primary);
1631                         break;
1632                 case 's':
1633                         if (nshadows >= 10)
1634                                 errx(1, "May only use 10 shadows at "
1635                                     "the moment");
1636                         parse_compiler(optarg, &shadows[nshadows]);
1637                         nshadows++;
1638                         break;
1639                 case 'v':
1640                         vflg = B_TRUE;
1641                         break;
1642                 default:
1643                         (void) fprintf(stderr, "Did you forget '--'?\n");
1644                         usage();
1645                 }
1646         }
1647 
1648         if (primary.c_path == NULL) {
1649                 warnx("A primary compiler must be specified");
1650                 usage();
1651         }
1652 
1653         do_serial = (getenv("CW_SHADOW_SERIAL") == NULL) ? B_FALSE : B_TRUE;
1654         do_exec = (getenv("CW_NO_EXEC") == NULL) ? B_TRUE : B_FALSE;
1655 
1656         /* Leave room for argv[0] */
1657         argc -= (optind - 1);
1658         argv += (optind - 1);
1659 
1660         main_ctx->i_oldargc = argc;
1661         main_ctx->i_oldargv = argv;
1662         main_ctx->i_flags = CW_F_XLATE;
1663         if (nflg == 0)
1664                 main_ctx->i_flags |= CW_F_ECHO;
1665         if (do_exec)
1666                 main_ctx->i_flags |= CW_F_EXEC;
1667         if (Cflg)
1668                 main_ctx->i_flags |= CW_F_CXX;
1669         main_ctx->i_compiler = &primary;
1670 
1671         if (cflg) {
1672                 (void) fputs(primary.c_path, stdout);
1673         }
1674 
1675         if (vflg) {
1676                 (void) printf("cw version %s\n", CW_VERSION);
1677                 (void) fflush(stdout);
1678                 main_ctx->i_flags &= ~CW_F_ECHO;
1679                 main_ctx->i_flags |= CW_F_PROG | CW_F_EXEC;
1680                 do_serial = 1;
1681         }
1682 
1683         ret |= exec_ctx(main_ctx, do_serial);
1684 
1685         for (int i = 0; i < nshadows; i++) {
1686                 int r;
1687                 cw_ictx_t *shadow_ctx;
1688 
1689                 if ((shadow_ctx = newictx()) == NULL)
1690                         nomem();
1691 
1692                 memcpy(shadow_ctx, main_ctx, sizeof (cw_ictx_t));
1693 
1694                 shadow_ctx->i_flags |= CW_F_SHADOW;
1695                 shadow_ctx->i_compiler = &shadows[i];
1696 
1697                 r = exec_ctx(shadow_ctx, do_serial);
1698                 if (r == 0) {
1699                         shadow_ctx->i_next = main_ctx->i_next;
1700                         main_ctx->i_next = shadow_ctx;
1701                 }
1702                 ret |= r;
1703         }
1704 
1705         if (!do_serial) {
1706                 cw_ictx_t *next = main_ctx;
1707                 while (next != NULL) {
1708                         cw_ictx_t *toreap = next;
1709                         next = next->i_next;
1710                         ret |= reap(toreap);
1711                 }
1712         }
1713 
1714         return (ret);
1715 }