gnu/dist/gettext/gettext-tools/lib/csharpcomp.c

   1 /* Compile a C# program.
   2    Copyright (C) 2003-2005 Free Software Foundation, Inc.
   3    Written by Bruno Haible <bruno@clisp.org>, 2003.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 2, or (at your option)
   8    any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program; if not, write to the Free Software Foundation,
  17    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  18
  19 #ifdef HAVE_CONFIG_H
  20 # include <config.h>
  21 #endif
  22 #include <alloca.h>
  23
  24 /* Specification.  */
  25 #include "csharpcomp.h"
  26
  27 #include <errno.h>
  28 #include <stdio.h>
  29 #include <stdlib.h>
  30 #include <string.h>
  31
  32 #include "execute.h"
  33 #include "pipe.h"
  34 #include "wait-process.h"
  35 #include "getline.h"
  36 #include "sh-quote.h"
  37 #include "safe-read.h"
  38 #include "xallocsa.h"
  39 #include "error.h"
  40 #include "gettext.h"
  41
  42 #define _(str) gettext (str)
  43
  44
  45 /* Survey of C# compilers.
  46
  47    Program    from
  48
  49    cscc       pnet
  50    mcs        mono
  51    csc        sscli
  52
  53    We try the CIL interpreters in the following order:
  54      1. "cscc", because it is a completely free system.
  55      2. "mcs", because it is a free system but doesn't integrate so well
  56         with Unix. (Command line options start with / instead of -. Errors go
  57         to stdout instead of stderr. Source references are printed as
  58         "file(lineno)" instead of "file:lineno:".)
  59      3. "csc", although it is not free, because it is a kind of "reference
  60         implementation" of C#.
  61    But the order can be changed through the --enable-csharp configuration
  62    option.
  63  */
  64
  65 static int
  66 compile_csharp_using_pnet (const char * const *sources,
  67                            unsigned int sources_count,
  68                            const char * const *libdirs,
  69                            unsigned int libdirs_count,
  70                            const char * const *libraries,
  71                            unsigned int libraries_count,
  72                            const char *output_file, bool output_is_library,
  73                            bool optimize, bool debug,
  74                            bool verbose)
  75 {
  76   static bool cscc_tested;
  77   static bool cscc_present;
  78
  79   if (!cscc_tested)
  80     {
  81       /* Test for presence of cscc:
  82          "cscc --version >/dev/null 2>/dev/null"  */
  83       char *argv[3];
  84       int exitstatus;
  85
  86       argv[0] = "cscc";
  87       argv[1] = "--version";
  88       argv[2] = NULL;
  89       exitstatus = execute ("cscc", "cscc", argv, false, false, true, true,
  90                             true, false);
  91       cscc_present = (exitstatus == 0);
  92       cscc_tested = true;
  93     }
  94
  95   if (cscc_present)
  96     {
  97       unsigned int argc;
  98       char **argv;
  99       char **argp;
 100       int exitstatus;
 101       unsigned int i;
 102
 103       argc =
 104         1 + (output_is_library ? 1 : 0) + 2 + 2 * libdirs_count
 105         + 2 * libraries_count + (optimize ? 1 : 0) + (debug ? 1 : 0)
 106         + sources_count;
 107       argv = (char **) xallocsa ((argc + 1) * sizeof (char *));
 108
 109       argp = argv;
 110       *argp++ = "cscc";
 111       if (output_is_library)
 112         *argp++ = "-shared";
 113       *argp++ = "-o";
 114       *argp++ = (char *) output_file;
 115       for (i = 0; i < libdirs_count; i++)
 116         {
 117           *argp++ = "-L";
 118           *argp++ = (char *) libdirs[i];
 119         }
 120       for (i = 0; i < libraries_count; i++)
 121         {
 122           *argp++ = "-l";
 123           *argp++ = (char *) libraries[i];
 124         }
 125       if (optimize)
 126         *argp++ = "-O";
 127       if (debug)
 128         *argp++ = "-g";
 129       for (i = 0; i < sources_count; i++)
 130         {
 131           const char *source_file = sources[i];
 132           if (strlen (source_file) >= 9
 133               && memcmp (source_file + strlen (source_file) - 9, ".resource",
 134                          9) == 0)
 135             {
 136               char *option = (char *) xallocsa (12 + strlen (source_file) + 1);
 137
 138               memcpy (option, "-fresources=", 12);
 139               strcpy (option + 12, source_file);
 140               *argp++ = option;
 141             }
 142           else
 143             *argp++ = (char *) source_file;
 144         }
 145       *argp = NULL;
 146       /* Ensure argv length was correctly calculated.  */
 147       if (argp - argv != argc)
 148         abort ();
 149
 150       if (verbose)
 151         {
 152           char *command = shell_quote_argv (argv);
 153           printf ("%s\n", command);
 154           free (command);
 155         }
 156
 157       exitstatus = execute ("cscc", "cscc", argv, false, false, false, false,
 158                             true, true);
 159
 160       for (i = 0; i < sources_count; i++)
 161         if (argv[argc - sources_count + i] != sources[i])
 162           freesa (argv[argc - sources_count + i]);
 163       freesa (argv);
 164
 165       return (exitstatus != 0);
 166     }
 167   else
 168     return -1;
 169 }
 170
 171 static int
 172 compile_csharp_using_mono (const char * const *sources,
 173                            unsigned int sources_count,
 174                            const char * const *libdirs,
 175                            unsigned int libdirs_count,
 176                            const char * const *libraries,
 177                            unsigned int libraries_count,
 178                            const char *output_file, bool output_is_library,
 179                            bool optimize, bool debug,
 180                            bool verbose)
 181 {
 182   static bool mcs_tested;
 183   static bool mcs_present;
 184
 185   if (!mcs_tested)
 186     {
 187       /* Test for presence of mcs:
 188          "mcs --version >/dev/null 2>/dev/null"  */
 189       char *argv[3];
 190       int exitstatus;
 191
 192       argv[0] = "mcs";
 193       argv[1] = "--version";
 194       argv[2] = NULL;
 195       exitstatus = execute ("mcs", "mcs", argv, false, false, true, true, true,
 196                             false);
 197       mcs_present = (exitstatus == 0);
 198       mcs_tested = true;
 199     }
 200
 201   if (mcs_present)
 202     {
 203       unsigned int argc;
 204       char **argv;
 205       char **argp;
 206       pid_t child;
 207       int fd[1];
 208       FILE *fp;
 209       char *line[2];
 210       size_t linesize[2];
 211       size_t linelen[2];
 212       unsigned int l;
 213       int exitstatus;
 214       unsigned int i;
 215
 216       argc =
 217         1 + (output_is_library ? 1 : 0) + 2 + 2 * libdirs_count
 218         + 2 * libraries_count + (debug ? 1 : 0) + sources_count;
 219       argv = (char **) xallocsa ((argc + 1) * sizeof (char *));
 220
 221       argp = argv;
 222       *argp++ = "mcs";
 223       if (output_is_library)
 224         *argp++ = "-target:library";
 225       *argp++ = "-o";
 226       *argp++ = (char *) output_file;
 227       for (i = 0; i < libdirs_count; i++)
 228         {
 229           *argp++ = "-L";
 230           *argp++ = (char *) libdirs[i];
 231         }
 232       for (i = 0; i < libraries_count; i++)
 233         {
 234           *argp++ = "-r";
 235           *argp++ = (char *) libraries[i];
 236         }
 237       if (debug)
 238         *argp++ = "-g";
 239       for (i = 0; i < sources_count; i++)
 240         {
 241           const char *source_file = sources[i];
 242           if (strlen (source_file) >= 9
 243               && memcmp (source_file + strlen (source_file) - 9, ".resource",
 244                          9) == 0)
 245             {
 246               char *option = (char *) xallocsa (10 + strlen (source_file) + 1);
 247
 248               memcpy (option, "-resource:", 10);
 249               strcpy (option + 10, source_file);
 250               *argp++ = option;
 251             }
 252           else
 253             *argp++ = (char *) source_file;
 254         }
 255       *argp = NULL;
 256       /* Ensure argv length was correctly calculated.  */
 257       if (argp - argv != argc)
 258         abort ();
 259
 260       if (verbose)
 261         {
 262           char *command = shell_quote_argv (argv);
 263           printf ("%s\n", command);
 264           free (command);
 265         }
 266
 267       child = create_pipe_in ("mcs", "mcs", argv, NULL, false, true, true, fd);
 268
 269       /* Read the subprocess output, copying it to stderr.  Drop the last
 270          line if it starts with "Compilation succeeded".  */
 271       fp = fdopen (fd[0], "r");
 272       if (fp == NULL)
 273         error (EXIT_FAILURE, errno, _("fdopen() failed"));
 274       line[0] = NULL; linesize[0] = 0;
 275       line[1] = NULL; linesize[1] = 0;
 276       l = 0;
 277       for (;;)
 278         {
 279           linelen[l] = getline (&line[l], &linesize[l], fp);
 280           if (linelen[l] == (size_t)(-1))
 281             break;
 282           l = (l + 1) % 2;
 283           if (line[l] != NULL)
 284             fwrite (line[l], 1, linelen[l], stderr);
 285         }
 286       l = (l + 1) % 2;
 287       if (line[l] != NULL
 288           && !(linelen[l] >= 21
 289                && memcmp (line[l], "Compilation succeeded", 21) == 0))
 290         fwrite (line[l], 1, linelen[l], stderr);
 291       if (line[0] != NULL)
 292         free (line[0]);
 293       if (line[1] != NULL)
 294         free (line[1]);
 295       fclose (fp);
 296
 297       /* Remove zombie process from process list, and retrieve exit status.  */
 298       exitstatus = wait_subprocess (child, "mcs", false, false, true, true);
 299
 300       for (i = 0; i < sources_count; i++)
 301         if (argv[argc - sources_count + i] != sources[i])
 302           freesa (argv[argc - sources_count + i]);
 303       freesa (argv);
 304
 305       return (exitstatus != 0);
 306     }
 307   else
 308     return -1;
 309 }
 310
 311 static int
 312 compile_csharp_using_sscli (const char * const *sources,
 313                             unsigned int sources_count,
 314                             const char * const *libdirs,
 315                             unsigned int libdirs_count,
 316                             const char * const *libraries,
 317                             unsigned int libraries_count,
 318                             const char *output_file, bool output_is_library,
 319                             bool optimize, bool debug,
 320                             bool verbose)
 321 {
 322   static bool csc_tested;
 323   static bool csc_present;
 324
 325   if (!csc_tested)
 326     {
 327       /* Test for presence of csc:
 328          "csc -help >/dev/null 2>/dev/null \
 329           && ! { csc -help 2>/dev/null | grep -i chicken > /dev/null; }"  */
 330       char *argv[3];
 331       pid_t child;
 332       int fd[1];
 333       int exitstatus;
 334
 335       argv[0] = "csc";
 336       argv[1] = "-help";
 337       argv[2] = NULL;
 338       child = create_pipe_in ("csc", "csc", argv, DEV_NULL, true, true, false,
 339                               fd);
 340       csc_present = false;
 341       if (child != -1)
 342         {
 343           /* Read the subprocess output, and test whether it contains the
 344              string "chicken".  */
 345           char c[7];
 346           size_t count = 0;
 347
 348           csc_present = true;
 349           while (safe_read (fd[0], &c[count], 1) > 0)
 350             {
 351               if (c[count] >= 'A' && c[count] <= 'Z')
 352                 c[count] += 'a' - 'A';
 353               count++;
 354               if (count == 7)
 355                 {
 356                   if (memcmp (c, "chicken", 7) == 0)
 357                     csc_present = false;
 358                   c[0] = c[1]; c[1] = c[2]; c[2] = c[3];
 359                   c[3] = c[4]; c[4] = c[5]; c[5] = c[6];
 360                   count--;
 361                 }
 362             }
 363
 364           close (fd[0]);
 365
 366           /* Remove zombie process from process list, and retrieve exit
 367              status.  */
 368           exitstatus =
 369             wait_subprocess (child, "csc", false, true, true, false);
 370           if (exitstatus != 0)
 371             csc_present = false;
 372         }
 373       csc_tested = true;
 374     }
 375
 376   if (csc_present)
 377     {
 378       unsigned int argc;
 379       char **argv;
 380       char **argp;
 381       int exitstatus;
 382       unsigned int i;
 383
 384       argc =
 385         1 + 1 + 1 + libdirs_count + libraries_count
 386         + (optimize ? 1 : 0) + (debug ? 1 : 0) + sources_count;
 387       argv = (char **) xallocsa ((argc + 1) * sizeof (char *));
 388
 389       argp = argv;
 390       *argp++ = "csc";
 391       *argp++ = (output_is_library ? "-target:library" : "-target:exe");
 392       {
 393         char *option = (char *) xallocsa (5 + strlen (output_file) + 1);
 394         memcpy (option, "-out:", 5);
 395         strcpy (option + 5, output_file);
 396         *argp++ = option;
 397       }
 398       for (i = 0; i < libdirs_count; i++)
 399         {
 400           char *option = (char *) xallocsa (5 + strlen (libdirs[i]) + 1);
 401           memcpy (option, "-lib:", 5);
 402           strcpy (option + 5, libdirs[i]);
 403           *argp++ = option;
 404         }
 405       for (i = 0; i < libraries_count; i++)
 406         {
 407           char *option = (char *) xallocsa (11 + strlen (libraries[i]) + 1);
 408           memcpy (option, "-reference:", 11);
 409           strcpy (option + 11, libraries[i]);
 410           *argp++ = option;
 411         }
 412       if (optimize)
 413         *argp++ = "-optimize+";
 414       if (debug)
 415         *argp++ = "-debug+";
 416       for (i = 0; i < sources_count; i++)
 417         {
 418           const char *source_file = sources[i];
 419           if (strlen (source_file) >= 9
 420               && memcmp (source_file + strlen (source_file) - 9, ".resource",
 421                          9) == 0)
 422             {
 423               char *option = (char *) xallocsa (10 + strlen (source_file) + 1);
 424
 425               memcpy (option, "-resource:", 10);
 426               strcpy (option + 10, source_file);
 427               *argp++ = option;
 428             }
 429           else
 430             *argp++ = (char *) source_file;
 431         }
 432       *argp = NULL;
 433       /* Ensure argv length was correctly calculated.  */
 434       if (argp - argv != argc)
 435         abort ();
 436
 437       if (verbose)
 438         {
 439           char *command = shell_quote_argv (argv);
 440           printf ("%s\n", command);
 441           free (command);
 442         }
 443
 444       exitstatus = execute ("csc", "csc", argv, false, false, false, false,
 445                             true, true);
 446
 447       for (i = 2; i < 3 + libdirs_count + libraries_count; i++)
 448         freesa (argv[i]);
 449       for (i = 0; i < sources_count; i++)
 450         if (argv[argc - sources_count + i] != sources[i])
 451           freesa (argv[argc - sources_count + i]);
 452       freesa (argv);
 453
 454       return (exitstatus != 0);
 455     }
 456   else
 457     return -1;
 458 }
 459
 460 bool
 461 compile_csharp_class (const char * const *sources,
 462                       unsigned int sources_count,
 463                       const char * const *libdirs,
 464                       unsigned int libdirs_count,
 465                       const char * const *libraries,
 466                       unsigned int libraries_count,
 467                       const char *output_file,
 468                       bool optimize, bool debug,
 469                       bool verbose)
 470 {
 471   bool output_is_library =
 472     (strlen (output_file) >= 4
 473      && memcmp (output_file + strlen (output_file) - 4, ".dll", 4) == 0);
 474   int result;
 475
 476   /* First try the C# implementation specified through --enable-csharp.  */
 477 #if CSHARP_CHOICE_PNET
 478   result = compile_csharp_using_pnet (sources, sources_count,
 479                                       libdirs, libdirs_count,
 480                                       libraries, libraries_count,
 481                                       output_file, output_is_library,
 482                                       optimize, debug, verbose);
 483   if (result >= 0)
 484     return (bool) result;
 485 #endif
 486
 487 #if CSHARP_CHOICE_MONO
 488   result = compile_csharp_using_mono (sources, sources_count,
 489                                       libdirs, libdirs_count,
 490                                       libraries, libraries_count,
 491                                       output_file, output_is_library,
 492                                       optimize, debug, verbose);
 493   if (result >= 0)
 494     return (bool) result;
 495 #endif
 496
 497   /* Then try the remaining C# implementations in our standard order.  */
 498 #if !CSHARP_CHOICE_PNET
 499   result = compile_csharp_using_pnet (sources, sources_count,
 500                                       libdirs, libdirs_count,
 501                                       libraries, libraries_count,
 502                                       output_file, output_is_library,
 503                                       optimize, debug, verbose);
 504   if (result >= 0)
 505     return (bool) result;
 506 #endif
 507
 508 #if !CSHARP_CHOICE_MONO
 509   result = compile_csharp_using_mono (sources, sources_count,
 510                                       libdirs, libdirs_count,
 511                                       libraries, libraries_count,
 512                                       output_file, output_is_library,
 513                                       optimize, debug, verbose);
 514   if (result >= 0)
 515     return (bool) result;
 516 #endif
 517
 518   result = compile_csharp_using_sscli (sources, sources_count,
 519                                        libdirs, libdirs_count,
 520                                        libraries, libraries_count,
 521                                        output_file, output_is_library,
 522                                        optimize, debug, verbose);
 523   if (result >= 0)
 524     return (bool) result;
 525
 526   error (0, 0, _("C# compiler not found, try installing pnet"));
 527   return true;
 528 }