tcc.c

   1 /*
   2  *  TCC - Tiny C Compiler
   3  *
   4  *  Copyright (c) 2001-2004 Fabrice Bellard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #ifdef ONE_SOURCE
  22 #include "libtcc.c"
  23 #else
  24 #include "tcc.h"
  25 #endif
  26 #include "tcctools.c"
  27
  28 static void help(void)
  29 {
  30     printf("Tiny C Compiler "TCC_VERSION" - Copyright (C) 2001-2006 Fabrice Bellard\n"
  31            "Usage: tcc [options...] [-o outfile] [-c] infile(s)...\n"
  32            "       tcc [options...] -run infile [arguments...]\n"
  33            "General options:\n"
  34            "  -c          compile only - generate an object file\n"
  35            "  -o outfile  set output filename\n"
  36            "  -run        run compiled source\n"
  37            "  -fflag      set or reset (with 'no-' prefix) 'flag' (see man page)\n"
  38            "  -Wwarning   set or reset (with 'no-' prefix) 'warning' (see man page)\n"
  39            "  -w          disable all warnings\n"
  40            "  -v          show version\n"
  41            "  -vv         show included files (as sole argument show search paths)\n"
  42            "  -h          show this help\n"
  43            "  -bench      show compilation statistics\n"
  44            "Preprocessor options:\n"
  45            "  -Idir       add include path 'dir'\n"
  46            "  -Dsym[=val] define 'sym' with value 'val'\n"
  47            "  -Usym       undefine 'sym'\n"
  48            "  -E          preprocess only\n"
  49            "  -P[1]       no / alternative #line output with -E\n"
  50            "  -dD -dM     output #define directives with -E\n"
  51            "  -include file  include file above each input file\n"
  52            "Linker options:\n"
  53            "  -Ldir       add library path 'dir'\n"
  54            "  -llib       link with dynamic or static library 'lib'\n"
  55            "  -r          generate (relocatable) object file\n"
  56            "  -shared     generate a shared library\n"
  57            "  -rdynamic   export all global symbols to dynamic linker\n"
  58            "  -soname     set name for shared library to be used at runtime\n"
  59            "  -static     static linking\n"
  60            "  -pthread    link with -lpthread and -D_REENTRANT (POSIX Linux)\n"
  61            "  -Wl,-opt[=val]  set linker option (see manual)\n"
  62            "Debugger options:\n"
  63            "  -g          generate runtime debug info\n"
  64 #ifdef CONFIG_TCC_BCHECK
  65            "  -b          compile with built-in memory and bounds checker (implies -g)\n"
  66 #endif
  67 #ifdef CONFIG_TCC_BACKTRACE
  68            "  -bt N       show N callers in stack traces\n"
  69 #endif
  70            "Misc options:\n"
  71            "  -x[c|a|n]   specify type of the next infile\n"
  72            "  -nostdinc   do not use standard system include paths\n"
  73            "  -nostdlib   do not link with standard crt and libraries\n"
  74            "  -Bdir       use 'dir' as tcc's private library/include path\n"
  75            "  -MD         generate target dependencies for make\n"
  76            "  -MF depfile put generated dependencies here\n"
  77            "  -dumpversion  print version\n"
  78            "  -           use stdin pipe as infile\n"
  79            "  @listfile   read arguments from listfile\n"
  80            "Target specific options:\n"
  81            "  -m32/64     execute i386/x86-64 cross compiler\n"
  82            "  -mms-bitfields  use MSVC bitfield layout\n"
  83 #ifdef TCC_TARGET_ARM
  84            "  -mfloat-abi hard/softfp on arm\n"
  85 #endif
  86 #ifdef TCC_TARGET_X86_64
  87            "  -mno-sse    disable floats on x86-64\n"
  88 #endif
  89            "Tools:\n"
  90            "  create library    : tcc -ar [rcsv] lib.a files\n"
  91 #ifdef TCC_TARGET_PE
  92            "  create .def file  : tcc -impdef lib.dll [-v] [-o lib.def]\n"
  93 #endif
  94            );
  95 }
  96
  97
  98 static void version(void)
  99 {
 100     printf("tcc version %s ("
 101 #ifdef TCC_TARGET_I386
 102         "i386"
 103 #elif defined TCC_TARGET_X86_64
 104         "x86-64"
 105 #elif defined TCC_TARGET_C67
 106         "C67"
 107 #elif defined TCC_TARGET_ARM
 108         "ARM"
 109 # ifdef TCC_ARM_HARDFLOAT
 110         " Hard Float"
 111 # endif
 112 #elif defined TCC_TARGET_ARM64
 113         "AArch64"
 114 # ifdef TCC_ARM_HARDFLOAT
 115         " Hard Float"
 116 # endif
 117 #endif
 118 #ifdef TCC_TARGET_PE
 119         " Windows"
 120 #elif defined(__APPLE__)
 121         /* Current Apple OS name as of 2016 */
 122         " macOS"
 123 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
 124         " FreeBSD"
 125 #elif defined(__DragonFly__)
 126         " DragonFly BSD"
 127 #elif defined(__NetBSD__)
 128         " NetBSD"
 129 #elif defined(__OpenBSD__)
 130         " OpenBSD"
 131 #elif defined(__linux__)
 132         " Linux"
 133 #else
 134         " Unidentified system"
 135 #endif
 136         ")\n", TCC_VERSION);
 137 }
 138
 139 static void print_dirs(const char *msg, char **paths, int nb_paths)
 140 {
 141     int i;
 142     printf("%s:\n%s", msg, nb_paths ? "" : "  -\n");
 143     for(i = 0; i < nb_paths; i++)
 144         printf("  %s\n", paths[i]);
 145 }
 146
 147 static void print_search_dirs(TCCState *s)
 148 {
 149     printf("install: %s\n", s->tcc_lib_path);
 150     /* print_dirs("programs", NULL, 0); */
 151     print_dirs("include", s->sysinclude_paths, s->nb_sysinclude_paths);
 152     print_dirs("libraries", s->library_paths, s->nb_library_paths);
 153 #ifndef TCC_TARGET_PE
 154     print_dirs("crt", s->crt_paths, s->nb_crt_paths);
 155     printf("elfinterp:\n  %s\n",  DEFAULT_ELFINTERP(s));
 156 #endif
 157 }
 158
 159 static char *default_outputfile(TCCState *s, const char *first_file)
 160 {
 161     char buf[1024];
 162     char *ext;
 163     const char *name = "a";
 164
 165     if (first_file && strcmp(first_file, "-"))
 166         name = tcc_basename(first_file);
 167     snprintf(buf, sizeof(buf), "%s", name);
 168     ext = tcc_fileextension(buf);
 169 #ifdef TCC_TARGET_PE
 170     if (s->output_type == TCC_OUTPUT_DLL)
 171         strcpy(ext, ".dll");
 172     else
 173     if (s->output_type == TCC_OUTPUT_EXE)
 174         strcpy(ext, ".exe");
 175     else
 176 #endif
 177     if (s->output_type == TCC_OUTPUT_OBJ && !s->option_r && *ext)
 178         strcpy(ext, ".o");
 179     else
 180         strcpy(buf, "a.out");
 181     return tcc_strdup(buf);
 182 }
 183
 184 static unsigned getclock_ms(void)
 185 {
 186 #ifdef _WIN32
 187     return GetTickCount();
 188 #else
 189     struct timeval tv;
 190     gettimeofday(&tv, NULL);
 191     return tv.tv_sec*1000 + (tv.tv_usec+500)/1000;
 192 #endif
 193 }
 194
 195 int main(int argc, char **argv)
 196 {
 197     TCCState *s;
 198     int ret, opt, n = 0;
 199     unsigned start_time = 0;
 200     const char *first_file;
 201
 202 redo:
 203     s = tcc_new();
 204     opt = tcc_parse_args(s, &argc, &argv, 1);
 205
 206     if (n == 0) {
 207         if (opt == OPT_HELP)
 208             return help(), 1;
 209         if (opt == OPT_M32 || opt == OPT_M64)
 210             tcc_tool_cross(s, argv, opt); /* never returns */
 211         if (s->verbose)
 212             version();
 213         if (opt == OPT_AR)
 214             return tcc_tool_ar(s, argc, argv);
 215 #ifdef TCC_TARGET_PE
 216         if (opt == OPT_IMPDEF)
 217             return tcc_tool_impdef(s, argc, argv);
 218 #endif
 219         if (opt == OPT_V)
 220             return 0;
 221
 222         tcc_set_environment(s);
 223
 224         if (opt == OPT_PRINT_DIRS) {
 225             /* initialize search dirs */
 226             tcc_set_output_type(s, TCC_OUTPUT_MEMORY);
 227             print_search_dirs(s);
 228             return 0;
 229         }
 230
 231         n = s->nb_files;
 232         if (n == 0)
 233             tcc_error("no input files\n");
 234
 235         if (s->output_type == TCC_OUTPUT_PREPROCESS) {
 236             if (!s->outfile) {
 237                 s->ppfp = stdout;
 238             } else {
 239                 s->ppfp = fopen(s->outfile, "w");
 240                 if (!s->ppfp)
 241                     tcc_error("could not write '%s'", s->outfile);
 242             }
 243         } else if (s->output_type == TCC_OUTPUT_OBJ) {
 244             if (s->nb_libraries != 0 && !s->option_r)
 245                 tcc_error("cannot specify libraries with -c");
 246             if (n > 1 && s->outfile)
 247                 tcc_error("cannot specify output file with -c many files");
 248         } else {
 249             if (s->option_pthread)
 250                 tcc_set_options(s, "-lpthread");
 251         }
 252
 253         if (s->do_bench)
 254             start_time = getclock_ms();
 255     }
 256
 257     if (s->output_type == 0)
 258         s->output_type = TCC_OUTPUT_EXE;
 259     tcc_set_output_type(s, s->output_type);
 260
 261     /* compile or add each files or library */
 262     for (first_file = NULL, ret = 0;;) {
 263         struct filespec *f = s->files[s->nb_files - n];
 264         s->filetype = f->type;
 265         s->alacarte_link = f->alacarte;
 266         if (f->type == AFF_TYPE_LIB) {
 267             if (tcc_add_library_err(s, f->name) < 0)
 268                 ret = 1;
 269         } else {
 270             if (1 == s->verbose)
 271                 printf("-> %s\n", f->name);
 272             if (!first_file)
 273                 first_file = f->name;
 274             if (tcc_add_file(s, f->name) < 0)
 275                 ret = 1;
 276         }
 277         s->filetype = 0;
 278         s->alacarte_link = 1;
 279         if (ret || --n == 0 || s->output_type == TCC_OUTPUT_OBJ)
 280             break;
 281     }
 282
 283     if (s->output_type == TCC_OUTPUT_PREPROCESS) {
 284         if (s->outfile)
 285             fclose(s->ppfp);
 286     } else if (0 == ret) {
 287         if (s->output_type == TCC_OUTPUT_MEMORY) {
 288 #ifdef TCC_IS_NATIVE
 289             ret = tcc_run(s, argc, argv);
 290 #endif
 291         } else {
 292             if (!s->outfile)
 293                 s->outfile = default_outputfile(s, first_file);
 294             if (tcc_output_file(s, s->outfile))
 295                 ret = 1;
 296             else if (s->gen_deps)
 297                 gen_makedeps(s, s->outfile, s->deps_outfile);
 298         }
 299     }
 300
 301     if (s->do_bench && ret == 0 && n == 0)
 302         tcc_print_stats(s, getclock_ms() - start_time);
 303     tcc_delete(s);
 304     if (ret == 0 && n)
 305         goto redo; /* compile more files with -c */
 306     return ret;
 307 }