1 /* Specific flags and argument handling of the front-end of the 2 GNU compiler for the Java(TM) language. 3 Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc. 4 5This file is part of GNU CC. 6 7GNU CC is free software; you can redistribute it and/or modify 8it under the terms of the GNU General Public License as published by 9the Free Software Foundation; either version 2, or (at your option) 10any later version. 11 12GNU CC is distributed in the hope that it will be useful, 13but WITHOUT ANY WARRANTY; without even the implied warranty of 14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15GNU General Public License for more details. 16 17You should have received a copy of the GNU General Public License 18along with GNU CC; see the file COPYING. If not, write to 19the Free Software Foundation, 59 Temple Place - Suite 330, 20Boston, MA 02111-1307, USA. 21 22Java and all Java-based marks are trademarks or registered trademarks 23of Sun Microsystems, Inc. in the United States and other countries. 24The Free Software Foundation is independent of Sun Microsystems, Inc. */ 25 26#include "config.h" 27 28#include "system.h" 29 30#include "gansidecl.h" 31 32/* Name of spec file. */ 33#define SPEC_FILE "libgcj.spec" 34 35/* This bit is set if we saw a `-xfoo' language specification. */ 36#define LANGSPEC (1<<1) 37/* True if this arg is a parameter to the previous option-taking arg. */ 38#define PARAM_ARG (1<<2) 39/* True if this arg is a .java input file name. */ 40#define JAVA_FILE_ARG (1<<3) 41/* True if this arg is a .class input file name. */ 42#define CLASS_FILE_ARG (1<<4) 43 44extern int do_spec PROTO((char *)); 45extern char *input_filename; 46extern size_t input_filename_length; 47 48char *main_class_name = NULL; 49int lang_specific_extra_outfiles = 0; 50 51/* Once we have the proper support in jc1 (and gcc.c) working, 52 set COMBINE_INPUTS to one. This enables combining multiple *.java 53 and *.class input files to be passed to a single jc1 invocation. */ 54#define COMBINE_INPUTS 0 55 56char jvgenmain_spec[] = 57 "jvgenmain %i %{!pipe:%umain.i} |\n\ 58 cc1 %{!pipe:%Umain.i} %1 \ 59 %{!Q:-quiet} -dumpbase %b.c %{d*} %{m*} %{a*}\ 60 %{g*} %{O*} \ 61 %{v:-version} %{pg:-p} %{p} %{f*}\ 62 %{aux-info*}\ 63 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\ 64 %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%Umain.s}} |\n\ 65 %{!S:as %a %Y -o %d%w%umain%O %{!pipe:%Umain.s} %A\n }"; 66 67/* Return full path name of spec file if it is in DIR, or NULL if 68 not. */ 69static char * 70find_spec_file (dir) 71 char *dir; 72{ 73 char *spec; 74 int x; 75 struct stat sb; 76 77 spec = (char *) xmalloc (strlen (dir) + sizeof (SPEC_FILE) 78 + sizeof ("-specs=") + 4); 79 strcpy (spec, "-specs="); 80 x = strlen (spec); 81 strcat (spec, dir); 82 strcat (spec, "/"); 83 strcat (spec, SPEC_FILE); 84 if (! stat (spec + x, &sb)) 85 return spec; 86 free (spec); 87 return NULL; 88} 89 90void 91lang_specific_driver (fn, in_argc, in_argv, in_added_libraries) 92 void (*fn)(); 93 int *in_argc; 94 char ***in_argv; 95 int *in_added_libraries; 96{ 97 int i, j; 98 99 /* If non-zero, the user gave us the `-v' flag. */ 100 int saw_verbose_flag = 0; 101 102 /* This will be 0 if we encounter a situation where we should not 103 link in libgcj. */ 104 int library = 1; 105 106#if COMBINE_INPUTS 107 /* This will be 1 if multiple input files (.class and/or .java) 108 should be passed to a single jc1 invocation. */ 109 int combine_inputs = 0; 110 111 /* Index of last .java or .class argument. */ 112 int last_input_index; 113 114 /* A buffer containing the concatenation of the inputs files 115 (e.g. "foo.java&bar.class&baz.class"). if combine_inputs. */ 116 char* combined_inputs_buffer; 117 118 /* Next available location in combined_inputs_buffer. */ 119 int combined_inputs_pos; 120 121 /* Number of .java and .class source file arguments seen. */ 122 int java_files_count = 0; 123 int class_files_count = 0; 124 125 /* Cumulative length of the .java and .class source file names. */ 126 int java_files_length = 0; 127 int class_files_length = 0; 128#endif 129 130 /* The number of arguments being added to what's in argv, other than 131 libraries. We use this to track the number of times we've inserted 132 -xc++/-xnone. */ 133 int added = 2; 134 135 /* Used to track options that take arguments, so we don't go wrapping 136 those with -xc++/-xnone. */ 137 char *quote = NULL; 138 139 /* The new argument list will be contained in this. */ 140 char **arglist; 141 142 /* Non-zero if we saw a `-xfoo' language specification on the 143 command line. Used to avoid adding our own -xc++ if the user 144 already gave a language for the file. */ 145 int saw_speclang = 0; 146 147 /* "-lm" or "-lmath" if it appears on the command line. */ 148 char *saw_math ATTRIBUTE_UNUSED = 0; 149 150 /* "-lc" if it appears on the command line. */ 151 char *saw_libc ATTRIBUTE_UNUSED = 0; 152 153 /* "-lgcjgc" if it appears on the command line. */ 154 char *saw_gc ATTRIBUTE_UNUSED = 0; 155 156 /* Saw `-l' option for the thread library. */ 157 char *saw_threadlib ATTRIBUTE_UNUSED = 0; 158 159 /* Saw `-lgcj' on command line. */ 160 int saw_libgcj ATTRIBUTE_UNUSED = 0; 161 162 /* Saw -C or -o option, respectively. */ 163 int saw_C = 0; 164 int saw_o = 0; 165 166 /* Saw some -O* or -g* option, respectively. */ 167 int saw_O = 0; 168 int saw_g = 0; 169 170 /* An array used to flag each argument that needs a bit set for 171 LANGSPEC, MATHLIB, WITHLIBC, or GCLIB. */ 172 int *args; 173 174 /* The total number of arguments with the new stuff. */ 175 int argc; 176 177 /* The argument list. */ 178 char **argv; 179 180 /* The number of libraries added in. */ 181 int added_libraries; 182 183 /* The total number of arguments with the new stuff. */ 184 int num_args = 1; 185 186 /* Non-zero if linking is supposed to happen. */ 187 int will_link = 1; 188 189 /* The argument we use to specify the spec file. */ 190 char *spec_file = NULL; 191 192 argc = *in_argc; 193 argv = *in_argv; 194 added_libraries = *in_added_libraries; 195 196 args = (int *) xmalloc (argc * sizeof (int)); 197 bzero ((char *) args, argc * sizeof (int)); 198 199 for (i = 1; i < argc; i++) 200 { 201 /* If the previous option took an argument, we swallow it here. */ 202 if (quote) 203 { 204 quote = NULL; 205 args[i] |= PARAM_ARG; 206 continue; 207 } 208 209 /* We don't do this anymore, since we don't get them with minus 210 signs on them. */ 211 if (argv[i][0] == '\0' || argv[i][1] == '\0') 212 continue; 213 214 if (argv[i][0] == '-') 215 { 216 if (library != 0 && (strcmp (argv[i], "-nostdlib") == 0 217 || strcmp (argv[i], "-nodefaultlibs") == 0)) 218 { 219 library = 0; 220 } 221 else if (strncmp (argv[i], "-fmain=", 7) == 0) 222 { 223 main_class_name = argv[i] + 7; 224 added--; 225 } 226 else if (strcmp (argv[i], "-fhelp") == 0) 227 will_link = 0; 228 else if (strcmp (argv[i], "-v") == 0) 229 { 230 saw_verbose_flag = 1; 231 if (argc == 2) 232 { 233 /* If they only gave us `-v', don't try to link 234 in libgcj. */ 235 library = 0; 236 } 237 } 238 else if (strncmp (argv[i], "-x", 2) == 0) 239 saw_speclang = 1; 240 else if (strcmp (argv[i], "-C") == 0) 241 { 242 saw_C = 1; 243#if COMBINE_INPUTS 244 combine_inputs = 1; 245#endif 246 if (library != 0) 247 added -= 2; 248 library = 0; 249 will_link = 0; 250 } 251 else if (argv[i][1] == 'g') 252 saw_g = 1; 253 else if (argv[i][1] == 'O') 254 saw_O = 1; 255 else if (((argv[i][2] == '\0' 256 && (char *)strchr ("bBVDUoeTuIYmLiA", argv[i][1]) != NULL) 257 || strcmp (argv[i], "-Tdata") == 0)) 258 { 259 if (strcmp (argv[i], "-o") == 0) 260 saw_o = 1; 261 quote = argv[i]; 262 } 263 else if (strcmp(argv[i], "-classpath") == 0 264 || strcmp(argv[i], "-CLASSPATH") == 0) 265 { 266 quote = argv[i]; 267 added -= 1; 268 } 269 else if (library != 0 270 && ((argv[i][2] == '\0' 271 && (char *) strchr ("cSEM", argv[i][1]) != NULL) 272 || strcmp (argv[i], "-MM") == 0)) 273 { 274 /* Don't specify libraries if we won't link, since that would 275 cause a warning. */ 276 library = 0; 277 added -= 2; 278 279 /* Remember this so we can confirm -fmain option. */ 280 will_link = 0; 281 } 282 else if (strcmp (argv[i], "-d") == 0) 283 { 284 /* `-d' option is for javac compatibility. */ 285 quote = argv[i]; 286 added -= 1; 287 } 288 else if (strcmp (argv[i], "-fsyntax-only") == 0 289 || strcmp (argv[i], "--syntax-only") == 0) 290 { 291 library = 0; 292 will_link = 0; 293 continue; 294 } 295 else 296 /* Pass other options through. */ 297 continue; 298 } 299 else 300 { 301#if COMBINE_INPUTS 302 int len; 303#endif 304 305 if (saw_speclang) 306 { 307 saw_speclang = 0; 308 continue; 309 } 310 311#if COMBINE_INPUTS 312 len = strlen (argv[i]); 313 if (len > 5 && strcmp (argv[i] + len - 5, ".java") == 0) 314 { 315 args[i] |= JAVA_FILE_ARG; 316 java_files_count++; 317 java_files_length += len; 318 last_input_index = i; 319 } 320 if (len > 6 && strcmp (argv[i] + len - 6, ".class") == 0) 321 { 322 args[i] |= CLASS_FILE_ARG; 323 class_files_count++; 324 class_files_length += len; 325 last_input_index = i; 326 } 327#endif 328 } 329 } 330 331 if (quote) 332 (*fn) ("argument to `%s' missing\n", quote); 333 334 num_args = argc + added; 335 if (saw_C) 336 { 337 num_args += 3; 338#if COMBINE_INPUTS 339 class_files_length = 0; 340 num_args -= class_files_count; 341 num_args += 2; /* For -o NONE. */ 342#endif 343 if (saw_o) 344 (*fn) ("cannot specify both -C and -o"); 345 } 346#if COMBINE_INPUTS 347 if (saw_o && java_files_count + (saw_C ? 0 : class_files_count) > 1) 348 combine_inputs = 1; 349 350 if (combine_inputs) 351 { 352 int len = java_files_length + java_files_count - 1; 353 num_args -= java_files_count; 354 num_args++; /* Add one for the combined arg. */ 355 if (class_files_length > 0) 356 { 357 len += class_files_length + class_files_count - 1; 358 num_args -= class_files_count; 359 } 360 combined_inputs_buffer = (char*) xmalloc (len); 361 combined_inputs_pos = 0; 362 } 363 /* If we know we don't have to do anything, bail now. */ 364#endif 365#if 0 366 if (! added && ! library && main_class_name == NULL && ! saw_C) 367 { 368 free (args); 369 return; 370 } 371#endif 372 373 if (main_class_name) 374 { 375 lang_specific_extra_outfiles++; 376 } 377 if (saw_g + saw_O == 0) 378 num_args++; 379 if (will_link) 380 num_args++; 381 arglist = (char **) xmalloc ((num_args + 1) * sizeof (char *)); 382 383 for (i = 0, j = 0; i < argc; i++, j++) 384 { 385 arglist[j] = argv[i]; 386 387 if ((args[i] & PARAM_ARG) || i == 0) 388 continue; 389 390 if (strcmp (argv[i], "-classpath") == 0 391 || strcmp (argv[i], "-CLASSPATH") == 0) 392 { 393 char* patharg 394 = (char*) xmalloc (strlen (argv[i]) + strlen (argv[i+1]) + 3); 395 sprintf (patharg, "-f%s=%s", argv[i]+1, argv[i+1]); 396 arglist[j] = patharg; 397 i++; 398 continue; 399 } 400 401 if (strcmp (argv[i], "-d") == 0) 402 { 403 char *patharg = (char *) xmalloc (sizeof ("-foutput-class-dir=") 404 + strlen (argv[i + 1]) + 1); 405 sprintf (patharg, "-foutput-class-dir=%s", argv[i + 1]); 406 arglist[j] = patharg; 407 ++i; 408 continue; 409 } 410 411 if (will_link && spec_file == NULL && strncmp (argv[i], "-L", 2) == 0) 412 spec_file = find_spec_file (argv[i] + 2); 413 414 if (strncmp (argv[i], "-fmain=", 7) == 0) 415 { 416 if (! will_link) 417 (*fn) ("cannot specify `main' class when not linking"); 418 --j; 419 continue; 420 } 421 422 if ((args[i] & CLASS_FILE_ARG) && saw_C) 423 { 424 --j; 425 continue; 426 } 427 428#if COMBINE_INPUTS 429 if (combine_inputs && (args[i] & (CLASS_FILE_ARG|JAVA_FILE_ARG)) != 0) 430 { 431 if (combined_inputs_pos > 0) 432 combined_inputs_buffer[combined_inputs_pos++] = '&'; 433 strcpy (&combined_inputs_buffer[combined_inputs_pos], argv[i]); 434 combined_inputs_pos += strlen (argv[i]); 435 --j; 436 continue; 437 } 438#endif 439 } 440 441#if COMBINE_INPUTS 442 if (combine_inputs) 443 { 444 combined_inputs_buffer[combined_inputs_pos] = '\0'; 445#if 0 446 if (! saw_C) 447#endif 448 arglist[j++] = combined_inputs_buffer; 449 } 450#endif 451 452 /* If we saw no -O or -g option, default to -g1, for javac compatibility. */ 453 if (saw_g + saw_O == 0) 454 arglist[j++] = "-g1"; 455 456 /* Read the specs file corresponding to libgcj, but only if linking. 457 If we didn't find the spec file on the -L path, then we hope it 458 is somewhere in the standard install areas. */ 459 if (will_link) 460 arglist[j++] = spec_file == NULL ? "-specs=libgcj.spec" : spec_file; 461 462 if (saw_C) 463 { 464 arglist[j++] = "-fsyntax-only"; 465 arglist[j++] = "-femit-class-files"; 466 arglist[j++] = "-S"; 467#if COMBINE_INPUTS 468 arglist[j++] = "-o"; 469 arglist[j++] = "NONE"; 470#endif 471 } 472 473 arglist[j] = NULL; 474 475 *in_argc = j; 476 *in_argv = arglist; 477 *in_added_libraries = added_libraries; 478} 479 480int 481lang_specific_pre_link () 482{ 483 if (main_class_name == NULL) 484 return 0; 485 input_filename = main_class_name; 486 input_filename_length = strlen (main_class_name); 487 return do_spec (jvgenmain_spec); 488} 489