1 | /*
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2 | * TCC - Tiny C Compiler
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3 | *
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4 | * Copyright (c) 2001-2004 Fabrice Bellard
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5 | *
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6 | * This library is free software; you can redistribute it and/or
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7 | * modify it under the terms of the GNU Lesser General Public
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8 | * License as published by the Free Software Foundation; either
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9 | * version 2 of the License, or (at your option) any later version.
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10 | *
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11 | * This library is distributed in the hope that it will be useful,
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | * Lesser General Public License for more details.
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15 | *
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16 | * You should have received a copy of the GNU Lesser General Public
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17 | * License along with this library; if not, write to the Free Software
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18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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19 | */
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20 |
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21 | #include "tcc.h"
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22 | #if ONE_SOURCE
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23 | # include "libtcc.c"
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24 | #endif
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25 | #include "tcctools.c"
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26 |
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27 | static const char help[] =
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28 | "Tiny C Compiler "TCC_VERSION" - Copyright (C) 2001-2006 Fabrice Bellard\n"
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29 | "Usage: tcc [options...] [-o outfile] [-c] infile(s)...\n"
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30 | " tcc [options...] -run infile [arguments...]\n"
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31 | "General options:\n"
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32 | " -c compile only - generate an object file\n"
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33 | " -o outfile set output filename\n"
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34 | " -run run compiled source\n"
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35 | " -fflag set or reset (with 'no-' prefix) 'flag' (see tcc -hh)\n"
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36 | " -Wwarning set or reset (with 'no-' prefix) 'warning' (see tcc -hh)\n"
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37 | " -w disable all warnings\n"
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38 | " -v -vv show version, show search paths or loaded files\n"
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39 | " -h -hh show this, show more help\n"
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40 | " -bench show compilation statistics\n"
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41 | " - use stdin pipe as infile\n"
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42 | " @listfile read arguments from listfile\n"
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43 | "Preprocessor options:\n"
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44 | " -Idir add include path 'dir'\n"
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45 | " -Dsym[=val] define 'sym' with value 'val'\n"
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46 | " -Usym undefine 'sym'\n"
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47 | " -E preprocess only\n"
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48 | "Linker options:\n"
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49 | " -Ldir add library path 'dir'\n"
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50 | " -llib link with dynamic or static library 'lib'\n"
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51 | " -r generate (relocatable) object file\n"
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52 | " -shared generate a shared library/dll\n"
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53 | " -rdynamic export all global symbols to dynamic linker\n"
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54 | " -soname set name for shared library to be used at runtime\n"
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55 | " -Wl,-opt[=val] set linker option (see tcc -hh)\n"
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56 | "Debugger options:\n"
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57 | " -g generate runtime debug info\n"
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58 | #ifdef CONFIG_TCC_BCHECK
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59 | " -b compile with built-in memory and bounds checker (implies -g)\n"
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60 | #endif
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61 | #ifdef CONFIG_TCC_BACKTRACE
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62 | " -bt N show N callers in stack traces\n"
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63 | #endif
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64 | "Misc. options:\n"
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65 | " -x[c|a|n] specify type of the next infile\n"
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66 | " -nostdinc do not use standard system include paths\n"
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67 | " -nostdlib do not link with standard crt and libraries\n"
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68 | " -Bdir set tcc's private include/library dir\n"
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69 | " -MD generate dependency file for make\n"
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70 | " -MF file specify dependency file name\n"
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71 | " -m32/64 defer to i386/x86_64 cross compiler\n"
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72 | "Tools:\n"
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73 | " create library : tcc -ar [rcsv] lib.a files\n"
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74 | #ifdef TCC_TARGET_PE
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75 | " create def file : tcc -impdef lib.dll [-v] [-o lib.def]\n"
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76 | #endif
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77 | ;
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78 |
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79 | static const char help2[] =
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80 | "Tiny C Compiler "TCC_VERSION" - More Options\n"
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81 | "Special options:\n"
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82 | " -P -P1 with -E: no/alternative #line output\n"
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83 | " -dD -dM with -E: output #define directives\n"
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84 | " -pthread same as -D_REENTRANT and -lpthread\n"
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85 | " -On same as -D__OPTIMIZE__ for n > 0\n"
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86 | " -Wp,-opt same as -opt\n"
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87 | " -include file include 'file' above each input file\n"
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88 | " -isystem dir add 'dir' to system include path\n"
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89 | " -static link to static libraries (not recommended)\n"
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90 | " -dumpversion print version\n"
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91 | " -print-search-dirs print search paths\n"
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92 | " -dt with -run/-E: auto-define 'test_...' macros\n"
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93 | "Ignored options:\n"
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94 | " --param -pedantic -pipe -s -std -traditional\n"
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95 | "-W... warnings:\n"
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96 | " all turn on some (*) warnings\n"
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97 | " error stop after first warning\n"
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98 | " unsupported warn about ignored options, pragmas, etc.\n"
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99 | " write-strings strings are const\n"
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100 | " implicit-function-declaration warn for missing prototype (*)\n"
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101 | "-f[no-]... flags:\n"
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102 | " unsigned-char default char is unsigned\n"
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103 | " signed-char default char is signed\n"
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104 | " common use common section instead of bss\n"
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105 | " leading-underscore decorate extern symbols\n"
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106 | " ms-extensions allow anonymous struct in struct\n"
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107 | " dollars-in-identifiers allow '$' in C symbols\n"
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108 | "-m... target specific options:\n"
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109 | " ms-bitfields use MSVC bitfield layout\n"
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110 | #ifdef TCC_TARGET_ARM
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111 | " float-abi hard/softfp on arm\n"
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112 | #endif
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113 | #ifdef TCC_TARGET_X86_64
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114 | " no-sse disable floats on x86_64\n"
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115 | #endif
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116 | "-Wl,... linker options:\n"
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117 | " -nostdlib do not link with standard crt/libs\n"
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118 | " -[no-]whole-archive load lib(s) fully/only as needed\n"
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119 | " -export-all-symbols same as -rdynamic\n"
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120 | " -image-base= -Ttext= set base address of executable\n"
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121 | " -section-alignment= set section alignment in executable\n"
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122 | #ifdef TCC_TARGET_PE
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123 | " -file-alignment= set PE file alignment\n"
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124 | " -stack= set PE stack reserve\n"
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125 | " -large-address-aware set related PE option\n"
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126 | " -subsystem=[console/windows] set PE subsystem\n"
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127 | " -oformat=[pe-* binary] set executable output format\n"
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128 | "Predefined macros:\n"
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129 | " tcc -E -dM - < nul\n"
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130 | #else
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131 | " -rpath= set dynamic library search path\n"
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132 | " -enable-new-dtags set DT_RUNPATH instead of DT_RPATH\n"
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133 | " -soname= set DT_SONAME elf tag\n"
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134 | " -Bsymbolic set DT_SYMBOLIC elf tag\n"
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135 | " -oformat=[elf32/64-* binary] set executable output format\n"
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136 | " -init= -fini= -as-needed -O (ignored)\n"
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137 | "Predefined macros:\n"
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138 | " tcc -E -dM - < /dev/null\n"
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139 | #endif
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140 | "See also the manual for more details.\n"
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141 | ;
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142 |
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143 | static const char version[] =
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144 | "tcc version "TCC_VERSION" ("
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145 | #ifdef TCC_TARGET_I386
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146 | "i386"
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147 | #elif defined TCC_TARGET_X86_64
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148 | "x86_64"
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149 | #elif defined TCC_TARGET_C67
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150 | "C67"
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151 | #elif defined TCC_TARGET_ARM
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152 | "ARM"
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153 | #elif defined TCC_TARGET_ARM64
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154 | "AArch64"
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155 | #endif
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156 | #ifdef TCC_ARM_HARDFLOAT
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157 | " Hard Float"
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158 | #endif
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159 | #ifdef TCC_TARGET_PE
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160 | " Windows"
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161 | #elif defined(TCC_TARGET_MACHO)
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162 | " Darwin"
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163 | #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
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164 | " FreeBSD"
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165 | #else
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166 | " Linux"
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167 | #endif
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168 | ")\n"
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169 | ;
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170 |
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171 | static void print_dirs(const char *msg, char **paths, int nb_paths)
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172 | {
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173 | int i;
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174 | printf("%s:\n%s", msg, nb_paths ? "" : " -\n");
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175 | for(i = 0; i < nb_paths; i++)
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176 | printf(" %s\n", paths[i]);
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177 | }
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178 |
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179 | static void print_search_dirs(TCCState *s)
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180 | {
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181 | printf("install: %s\n", s->tcc_lib_path);
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182 | /* print_dirs("programs", NULL, 0); */
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183 | print_dirs("include", s->sysinclude_paths, s->nb_sysinclude_paths);
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184 | print_dirs("libraries", s->library_paths, s->nb_library_paths);
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185 | printf("libtcc1:\n %s/"TCC_LIBTCC1"\n", s->tcc_lib_path);
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186 | #ifndef TCC_TARGET_PE
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187 | print_dirs("crt", s->crt_paths, s->nb_crt_paths);
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188 | printf("elfinterp:\n %s\n", DEFAULT_ELFINTERP(s));
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189 | #endif
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190 | }
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191 |
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192 | static void set_environment(TCCState *s)
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193 | {
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194 | char * path;
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195 |
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196 | path = getenv("C_INCLUDE_PATH");
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197 | if(path != NULL) {
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198 | tcc_add_sysinclude_path(s, path);
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199 | }
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200 | path = getenv("CPATH");
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201 | if(path != NULL) {
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202 | tcc_add_include_path(s, path);
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203 | }
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204 | path = getenv("LIBRARY_PATH");
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205 | if(path != NULL) {
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206 | tcc_add_library_path(s, path);
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207 | }
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208 | }
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209 |
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210 | static char *default_outputfile(TCCState *s, const char *first_file)
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211 | {
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212 | char buf[1024];
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213 | char *ext;
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214 | const char *name = "a";
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215 |
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216 | if (first_file && strcmp(first_file, "-"))
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217 | name = tcc_basename(first_file);
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218 | snprintf(buf, sizeof(buf), "%s", name);
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219 | ext = tcc_fileextension(buf);
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220 | #ifdef TCC_TARGET_PE
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221 | if (s->output_type == TCC_OUTPUT_DLL)
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222 | strcpy(ext, ".dll");
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223 | else
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224 | if (s->output_type == TCC_OUTPUT_EXE)
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225 | strcpy(ext, ".exe");
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226 | else
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227 | #endif
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228 | if (s->output_type == TCC_OUTPUT_OBJ && !s->option_r && *ext)
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229 | strcpy(ext, ".o");
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230 | else
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231 | strcpy(buf, "a.out");
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232 | return tcc_strdup(buf);
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233 | }
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234 |
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235 | static unsigned getclock_ms(void)
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236 | {
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237 | #ifdef _WIN32
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238 | return GetTickCount();
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239 | #else
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240 | struct timeval tv;
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241 | gettimeofday(&tv, NULL);
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242 | return tv.tv_sec*1000 + (tv.tv_usec+500)/1000;
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243 | #endif
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244 | }
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245 |
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246 | int tcc_main(int argc0, char **argv0)
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247 | {
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248 | TCCState *s;
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249 | int ret, opt, n = 0, t = 0;
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250 | unsigned start_time = 0;
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251 | const char *first_file;
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252 | int argc; char **argv;
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253 | FILE *ppfp = stdout;
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254 |
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255 | redo:
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256 | argc = argc0, argv = argv0;
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257 | s = tcc_new();
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258 | opt = tcc_parse_args(s, &argc, &argv, 1);
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259 |
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260 | if ((n | t) == 0) {
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261 | if (opt == OPT_HELP)
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262 | return printf(help), 1;
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263 | if (opt == OPT_HELP2)
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264 | return printf(help2), 1;
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265 | if (opt == OPT_M32 || opt == OPT_M64)
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266 | tcc_tool_cross(s, argv, opt); /* never returns */
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267 | if (s->verbose)
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268 | printf(version);
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269 | if (opt == OPT_AR)
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270 | return tcc_tool_ar(s, argc, argv);
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271 | #ifdef TCC_TARGET_PE
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272 | if (opt == OPT_IMPDEF)
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273 | return tcc_tool_impdef(s, argc, argv);
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274 | #endif
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275 | if (opt == OPT_V)
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276 | return 0;
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277 | if (opt == OPT_PRINT_DIRS) {
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278 | /* initialize search dirs */
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279 | set_environment(s);
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280 | tcc_set_output_type(s, TCC_OUTPUT_MEMORY);
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281 | print_search_dirs(s);
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282 | return 0;
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283 | }
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284 |
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285 | n = s->nb_files;
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286 | if (n == 0)
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287 | tcc_error("no input files\n");
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288 |
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289 | if (s->output_type == TCC_OUTPUT_PREPROCESS) {
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290 | if (s->outfile) {
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291 | ppfp = fopen(s->outfile, "w");
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292 | if (!ppfp)
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293 | tcc_error("could not write '%s'", s->outfile);
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294 | }
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295 | } else if (s->output_type == TCC_OUTPUT_OBJ && !s->option_r) {
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296 | if (s->nb_libraries)
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297 | tcc_error("cannot specify libraries with -c");
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298 | if (n > 1 && s->outfile)
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299 | tcc_error("cannot specify output file with -c many files");
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300 | } else {
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301 | if (s->option_pthread)
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302 | tcc_set_options(s, "-lpthread");
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303 | }
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304 |
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305 | if (s->do_bench)
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306 | start_time = getclock_ms();
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307 | }
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308 |
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309 | set_environment(s);
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310 | if (s->output_type == 0)
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311 | s->output_type = TCC_OUTPUT_EXE;
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312 | tcc_set_output_type(s, s->output_type);
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313 | s->ppfp = ppfp;
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314 |
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315 | if ((s->output_type == TCC_OUTPUT_MEMORY
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316 | || s->output_type == TCC_OUTPUT_PREPROCESS) && (s->dflag & 16))
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317 | s->dflag |= t ? 32 : 0, s->run_test = ++t, n = s->nb_files;
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318 |
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319 | /* compile or add each files or library */
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320 | for (first_file = NULL, ret = 0;;) {
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321 | struct filespec *f = s->files[s->nb_files - n];
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322 | s->filetype = f->type;
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323 | s->alacarte_link = f->alacarte;
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324 | if (f->type == AFF_TYPE_LIB) {
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325 | if (tcc_add_library_err(s, f->name) < 0)
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326 | ret = 1;
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327 | } else {
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328 | if (1 == s->verbose)
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329 | printf("-> %s\n", f->name);
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330 | if (!first_file)
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331 | first_file = f->name;
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332 | if (tcc_add_file(s, f->name) < 0)
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333 | ret = 1;
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334 | }
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335 | s->filetype = 0;
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336 | s->alacarte_link = 1;
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337 | if (--n == 0 || ret
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338 | || (s->output_type == TCC_OUTPUT_OBJ && !s->option_r))
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339 | break;
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340 | }
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341 |
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342 | if (s->run_test) {
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343 | t = 0;
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344 | } else if (s->output_type == TCC_OUTPUT_PREPROCESS) {
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345 | ;
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346 | } else if (0 == ret) {
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347 | if (s->output_type == TCC_OUTPUT_MEMORY) {
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348 | #ifdef TCC_IS_NATIVE
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349 | ret = tcc_run(s, argc, argv);
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350 | #endif
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351 | } else {
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352 | if (!s->outfile)
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353 | s->outfile = default_outputfile(s, first_file);
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354 | if (tcc_output_file(s, s->outfile))
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355 | ret = 1;
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356 | else if (s->gen_deps)
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357 | gen_makedeps(s, s->outfile, s->deps_outfile);
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358 | }
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359 | }
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360 |
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361 | if (s->do_bench && (n | t | ret) == 0)
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362 | tcc_print_stats(s, getclock_ms() - start_time);
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363 | tcc_delete(s);
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364 | if (ret == 0 && n)
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365 | goto redo; /* compile more files with -c */
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366 | if (t)
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367 | goto redo; /* run more tests with -dt -run */
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368 | if (ppfp && ppfp != stdout)
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369 | fclose(ppfp);
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370 | return ret;
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371 | }
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