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1899
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1 /*
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2 a re-implementation of the compilercache scripts in C
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3
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4 The idea is based on the shell-script compilercache by Erik Thiele <erikyyy@erikyyy.de>
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5
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6 Copyright (C) Andrew Tridgell 2002
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7 Copyright (C) Martin Pool 2003
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8
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9 This program is free software; you can redistribute it and/or modify
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10 it under the terms of the GNU General Public License as published by
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11 the Free Software Foundation; either version 2 of the License, or
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12 (at your option) any later version.
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13
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14 This program is distributed in the hope that it will be useful,
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15 but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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17 GNU General Public License for more details.
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18
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19 You should have received a copy of the GNU General Public License
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20 along with this program; if not, write to the Free Software
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21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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22 */
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23
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24 #include "ccache.h"
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25
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26 /* verbose mode */
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27 int ccache_verbose = 0;
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28
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29 /* the base cache directory */
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30 char *cache_dir = NULL;
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31
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32 /* the directory for temporary files */
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33 static char *temp_dir = NULL;
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34
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35 /* the debug logfile name, if set */
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36 char *cache_logfile = NULL;
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37
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38 /* the argument list after processing */
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39 static ARGS *stripped_args;
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40
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41 /* the original argument list */
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42 static ARGS *orig_args;
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43
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44 /* the output filename being compiled to */
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45 static char *output_file;
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46
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47 /* the source file */
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48 static char *input_file;
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49
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50 /* the name of the file containing the cached object code */
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51 static char *hashname;
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52
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53 /* the extension of the file after pre-processing */
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54 static const char *i_extension;
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55
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56 /* the name of the temporary pre-processor file */
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57 static char *i_tmpfile;
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58
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59 /* are we compiling a .i or .ii file directly? */
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60 static int direct_i_file;
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61
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62 /* the name of the cpp stderr file */
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63 static char *cpp_stderr;
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64
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65 /* the name of the statistics file */
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66 char *stats_file = NULL;
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67
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68 /* can we safely use the unification hashing backend? */
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69 static int enable_unify;
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70
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71 /* should we strip -c when running the preprocessor only? */
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72 static int strip_c_option;
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73
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74 /* customisation for using the SWIG compiler */
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75 static int swig;
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76
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77 /* a list of supported file extensions, and the equivalent
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78 extension for code that has been through the pre-processor
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79 */
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80 static struct {
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81 char *extension;
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82 char *i_extension;
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83 } extensions[] = {
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84 {"c", "i"},
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85 {"C", "ii"},
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86 {"m", "mi"},
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87 {"cc", "ii"},
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88 {"CC", "ii"},
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89 {"cpp", "ii"},
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90 {"CPP", "ii"},
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91 {"cxx", "ii"},
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92 {"CXX", "ii"},
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93 {"c++", "ii"},
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94 {"C++", "ii"},
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95 {"i", "i"},
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96 {"ii", "ii"},
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97 {NULL, NULL}};
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98
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99 /*
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100 something went badly wrong - just execute the real compiler
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101 */
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102 static void failed(void)
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103 {
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104 char *e;
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105
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106 /* delete intermediate pre-processor file if needed */
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107 if (i_tmpfile) {
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108 if (!direct_i_file) {
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109 unlink(i_tmpfile);
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110 }
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111 free(i_tmpfile);
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112 i_tmpfile = NULL;
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113 }
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114
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115 /* delete the cpp stderr file if necessary */
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116 if (cpp_stderr) {
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117 unlink(cpp_stderr);
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118 free(cpp_stderr);
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119 cpp_stderr = NULL;
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120 }
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121
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122 /* strip any local args */
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123 args_strip(orig_args, "--ccache-");
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124
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125 if ((e=getenv("CCACHE_PREFIX"))) {
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126 char *p = find_executable(e, MYNAME);
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127 if (!p) {
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128 cc_log("could not find executable (%s)\n", e);
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129 perror(e);
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130 exit(1);
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131 }
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132 args_add_prefix(orig_args, p);
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133 }
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134
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135 if (ccache_verbose) {
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136 display_execute_args(orig_args->argv);
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137 }
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138
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139 if (swig) {
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140 putenv("CCACHE_OUTFILES");
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141 }
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142
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143 #ifndef _WIN32
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144 execv(orig_args->argv[0], orig_args->argv);
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145 cc_log("execv returned (%s)!\n", strerror(errno));
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146 perror(orig_args->argv[0]);
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147 exit(1);
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148 #else
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149 /* execv on Windows causes the 'non-regular' testcase to fail, so use Win32 API instead */
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150 {
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151 PROCESS_INFORMATION pinfo;
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152 STARTUPINFO sinfo;
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153 BOOL ret;
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154 DWORD exitcode;
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155 char *args;
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156
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157 ZeroMemory(&pinfo, sizeof(PROCESS_INFORMATION));
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158 ZeroMemory(&sinfo, sizeof(STARTUPINFO));
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159 sinfo.cb = sizeof(STARTUPINFO);
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160 args = argvtos(orig_args->argv);
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161 ret = CreateProcessA(orig_args->argv[0], args, NULL, NULL, TRUE, 0, NULL, NULL,
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162 &sinfo, &pinfo);
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163 if (!ret) {
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164 exitcode = 1;
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165 cc_log("CreateProcessA failed starting %s\n", orig_args->argv[0]);
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166 perror_win32(orig_args->argv[0]);
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167 } else {
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168 WaitForSingleObject(pinfo.hProcess, INFINITE);
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169 GetExitCodeProcess(pinfo.hProcess, &exitcode);
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170 CloseHandle(pinfo.hProcess);
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171 CloseHandle(pinfo.hThread);
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172 }
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173 free(args);
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174 exit(exitcode);
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175 }
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176 #endif
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177 }
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178
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179
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180 /* return a string to be used to distinguish temporary files
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181 this also tries to cope with NFS by adding the local hostname
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182 */
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183 static const char *tmp_string(void)
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184 {
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185 static char *ret;
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186
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187 if (!ret) {
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188 char hostname[200];
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189 strcpy(hostname, "unknown");
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190 #if HAVE_GETHOSTNAME
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191 gethostname(hostname, sizeof(hostname)-1);
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192 #endif
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193 hostname[sizeof(hostname)-1] = 0;
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194 if (asprintf(&ret, "%s.%u", hostname, (unsigned)getpid()) == -1) {
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195 fatal("could not allocate tmp_string");
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196 }
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197 }
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198
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199 return ret;
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200 }
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201
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202 /* update cached file sizes and count helper function for to_cache() */
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203 static void to_cache_stats_helper(struct stat *pstat, char *cached_filename, char *tmp_outfiles, int *files_size, int *cached_files_count)
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204 {
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205 #if ENABLE_ZLIB
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206 /* do an extra stat on the cache file for the size statistics */
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207 if (stat(cached_filename, pstat) != 0) {
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208 cc_log("failed to stat cache files - %s\n", strerror(errno));
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209 stats_update(STATS_ERROR);
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210 if (tmp_outfiles) {
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211 unlink(tmp_outfiles);
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212 }
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213 failed();
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214 }
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215 #else
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216 (void)cached_filename;
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217 (void)tmp_outfiles;
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218 #endif
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219 (*files_size) += file_size(pstat);
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220 (*cached_files_count)++;
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221 }
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222
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223 /* run the real compiler and put the result in cache */
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224 static void to_cache(ARGS *args)
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225 {
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226 char *path_stderr;
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227 char *tmp_stdout, *tmp_stderr, *tmp_outfiles;
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228 struct stat st1;
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229 int status;
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230 int cached_files_count = 0;
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231 int files_size = 0;
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232
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233 x_asprintf(&tmp_stdout, "%s/tmp.stdout.%s", temp_dir, tmp_string());
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234 x_asprintf(&tmp_stderr, "%s/tmp.stderr.%s", temp_dir, tmp_string());
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235 x_asprintf(&tmp_outfiles, "%s/tmp.outfiles.%s", temp_dir, tmp_string());
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236
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237 if (strip_c_option && !swig) {
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238 args_add(stripped_args, "-c");
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239 }
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240
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241 if (output_file) {
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242 args_add(args, "-o");
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243 args_add(args, output_file);
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244 }
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245
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246 /* Turn off DEPENDENCIES_OUTPUT when running cc1, because
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247 * otherwise it will emit a line like
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248 *
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249 * tmp.stdout.vexed.732.o: /home/mbp/.ccache/tmp.stdout.vexed.732.i
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250 *
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251 * unsetenv() is on BSD and Linux but not portable. */
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252 putenv("DEPENDENCIES_OUTPUT");
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253
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254 /* Give SWIG a filename for it to create and populate with a list of files that it generates */
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255 if (swig) {
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256 char *ccache_outfiles;
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257 x_asprintf(&ccache_outfiles, "CCACHE_OUTFILES=%s", tmp_outfiles);
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258 unlink(tmp_outfiles);
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259 if (getenv("CCACHE_OUTFILES") || putenv(ccache_outfiles) == -1) {
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260 cc_log("CCACHE_OUTFILES env variable already set or could not be set\n");
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261 stats_update(STATS_ERROR);
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262 failed();
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263 }
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264 }
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265
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266 if (getenv("CCACHE_CPP2")) {
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267 args_add(args, input_file);
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268 } else {
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269 if (swig) {
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270 args_add(args, "-nopreprocess");
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271 }
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272 args_add(args, i_tmpfile);
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273 }
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274 status = execute(args->argv, tmp_stdout, tmp_stderr);
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275 args_pop(args, 3);
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276
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277 if (stat(tmp_stdout, &st1) != 0 || st1.st_size != 0) {
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278 cc_log("compiler produced stdout for %s\n", input_file);
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279 stats_update(STATS_STDOUT);
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280 unlink(tmp_stdout);
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281 unlink(tmp_stderr);
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282 unlink(tmp_outfiles);
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283 if (!swig) unlink(output_file);
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284 failed();
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285 }
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286 unlink(tmp_stdout);
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287
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288 if (status != 0) {
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289 int fd;
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290 cc_log("compile of %s gave status = %d\n", input_file, status);
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291 stats_update(STATS_STATUS);
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292
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293 fd = open(tmp_stderr, O_RDONLY | O_BINARY);
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294 if (fd != -1) {
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295 if (cpp_stderr) {
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296 /* we might have some stderr from cpp */
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297 int fd2 = open(cpp_stderr, O_RDONLY | O_BINARY);
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298 if (fd2 != -1) {
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299 copy_fd(fd2, 2);
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300 close(fd2);
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301 unlink(cpp_stderr);
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302 cpp_stderr = NULL;
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303 }
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304 }
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305
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306 /* we can use a quick method of
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307 getting the failed output */
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308 copy_fd(fd, 2);
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309 close(fd);
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310 unlink(tmp_stderr);
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311 if (i_tmpfile && !direct_i_file) {
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312 unlink(i_tmpfile);
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313 }
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314 exit(status);
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315 }
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316
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317 unlink(tmp_stderr);
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318 unlink(tmp_outfiles);
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319 if (!swig) unlink(output_file);
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320 failed();
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321 } else {
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322 int hardlink = (getenv("CCACHE_NOCOMPRESS") != 0) && (getenv("CCACHE_HARDLINK") != 0);
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323 if (swig) {
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324 /* read the list of generated files and copy each of them into the cache */
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325 FILE *file;
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326 file = fopen(tmp_outfiles, "r");
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327 if (file) {
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328 char out_filename[FILENAME_MAX + 1];
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329 char out_filename_cache[FILENAME_MAX + 1];
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330 while (fgets(out_filename, FILENAME_MAX, file)) {
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331 char *linefeed = strchr(out_filename, '\n');
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332 if (linefeed) {
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333 char *potential_cr = linefeed - 1;
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334 if (potential_cr >= out_filename && *potential_cr == '\r')
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335 *potential_cr = 0;
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336 *linefeed = 0;
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337
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338 if (cached_files_count == 0) {
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339 strcpy(out_filename_cache, hashname);
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340 } else {
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341 sprintf(out_filename_cache, "%s.%d", hashname, cached_files_count);
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342 }
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343
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344 if (commit_to_cache(out_filename, out_filename_cache, hardlink) != 0) {
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345 fclose(file);
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346 unlink(tmp_outfiles);
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347 failed();
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348 }
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349 to_cache_stats_helper(&st1, out_filename_cache, tmp_outfiles, &files_size, &cached_files_count);
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350 } else {
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351 cached_files_count = 0;
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352 break;
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353 }
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354 }
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355 fclose(file);
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356 if (cached_files_count == 0) {
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357 cc_log("failed to copy output files to cache - internal error\n");
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358 stats_update(STATS_ERROR);
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359 unlink(tmp_outfiles);
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360 failed();
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361 }
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362
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363 /* also copy the (uncompressed) file containing the list of generated files into the cache */
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364 sprintf(out_filename_cache, "%s.outfiles", hashname);
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365 if (stat(tmp_outfiles, &st1) != 0 ||
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366 safe_rename(tmp_outfiles, out_filename_cache) != 0) {
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367 cc_log("failed to copy outfiles file to cache - %s\n", strerror(errno));
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368 stats_update(STATS_ERROR);
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369 unlink(tmp_outfiles);
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370 failed();
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371 }
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372 to_cache_stats_helper(&st1, out_filename_cache, tmp_outfiles, &files_size, &cached_files_count);
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373 unlink(tmp_outfiles);
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374 } else {
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375 cc_log("failed to open temp outfiles file - %s\n", strerror(errno));
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376 stats_update(STATS_ERROR);
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377 failed();
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378 }
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379 } else {
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380 if (commit_to_cache(output_file, hashname, hardlink) != 0) {
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381 failed();
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382 }
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383 to_cache_stats_helper(&st1, hashname, 0, &files_size, &cached_files_count);
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384 }
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385 }
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386
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387 x_asprintf(&path_stderr, "%s.stderr", hashname);
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388
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389 if (stat(tmp_stderr, &st1) != 0 ||
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390 move_file(tmp_stderr, path_stderr) != 0) {
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391 cc_log("failed to rename tmp files - %s\n", strerror(errno));
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392 stats_update(STATS_ERROR);
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393 failed();
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394 }
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395
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396 to_cache_stats_helper(&st1, path_stderr, 0, &files_size, &cached_files_count);
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397
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398 cc_log("Placed %d files for %s into cache\n", cached_files_count, input_file);
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399 stats_tocache(files_size, cached_files_count);
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400
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401 free(tmp_stderr);
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402 free(tmp_stdout);
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403 free(tmp_outfiles);
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404 free(path_stderr);
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405 }
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406
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407 /* find the hash for a command. The hash includes all argument lists,
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408 plus the output from running the compiler with -E */
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409 static void find_hash(ARGS *args)
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410 {
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411 int i;
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412 char *path_stdout, *path_stderr;
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413 char *hash_dir;
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414 char *s;
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415 struct stat st;
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|
416 int status;
|
|
|
417 int nlevels = 2;
|
|
|
418 char *input_base;
|
|
|
419 char *tmp;
|
|
|
420
|
|
|
421 if ((s = getenv("CCACHE_NLEVELS"))) {
|
|
|
422 nlevels = atoi(s);
|
|
|
423 if (nlevels < 1) nlevels = 1;
|
|
|
424 if (nlevels > 8) nlevels = 8;
|
|
|
425 }
|
|
|
426
|
|
|
427 hash_start();
|
|
|
428
|
|
|
429 /* when we are doing the unifying tricks we need to include
|
|
|
430 the input file name in the hash to get the warnings right */
|
|
|
431 if (enable_unify || swig) {
|
|
|
432 hash_string(input_file);
|
|
|
433 }
|
|
|
434
|
|
|
435 if (swig) {
|
|
|
436 if (output_file) {
|
|
|
437 hash_string(output_file);
|
|
|
438 }
|
|
|
439 } else {
|
|
|
440 /* we have to hash the extension, as a .i file isn't treated the same
|
|
|
441 by the compiler as a .ii file */
|
|
|
442 hash_string(i_extension);
|
|
|
443 }
|
|
|
444
|
|
|
445 /* first the arguments */
|
|
|
446 for (i=1;i<args->argc;i++) {
|
|
|
447 /* some arguments don't contribute to the hash. The
|
|
|
448 theory is that these arguments will change the
|
|
|
449 output of -E if they are going to have any effect
|
|
|
450 at all, or they only affect linking */
|
|
|
451 if (i < args->argc-1) {
|
|
|
452 if (strcmp(args->argv[i], "-I") == 0 ||
|
|
|
453 strcmp(args->argv[i], "-include") == 0 ||
|
|
|
454 strcmp(args->argv[i], "-L") == 0 ||
|
|
|
455 strcmp(args->argv[i], "-D") == 0 ||
|
|
|
456 strcmp(args->argv[i], "-idirafter") == 0 ||
|
|
|
457 strcmp(args->argv[i], "-isystem") == 0) {
|
|
|
458 i++;
|
|
|
459 continue;
|
|
|
460 }
|
|
|
461 }
|
|
|
462 if (strncmp(args->argv[i], "-I", 2) == 0 ||
|
|
|
463 strncmp(args->argv[i], "-L", 2) == 0 ||
|
|
|
464 strncmp(args->argv[i], "-D", 2) == 0 ||
|
|
|
465 strncmp(args->argv[i], "-idirafter", 10) == 0 ||
|
|
|
466 strncmp(args->argv[i], "-isystem", 8) == 0) {
|
|
|
467 continue;
|
|
|
468 }
|
|
|
469
|
|
|
470 if (strncmp(args->argv[i], "--specs=", 8) == 0 &&
|
|
|
471 stat(args->argv[i]+8, &st) == 0) {
|
|
|
472 /* if given a explicit specs file, then hash that file, but
|
|
|
473 don't include the path to it in the hash */
|
|
|
474 hash_file(args->argv[i]+8);
|
|
|
475 continue;
|
|
|
476 }
|
|
|
477
|
|
|
478 /* all other arguments are included in the hash */
|
|
|
479 hash_string(args->argv[i]);
|
|
|
480 }
|
|
|
481
|
|
|
482 /* the compiler driver size and date. This is a simple minded way
|
|
|
483 to try and detect compiler upgrades. It is not 100% reliable */
|
|
|
484 if (stat(args->argv[0], &st) != 0) {
|
|
|
485 cc_log("Couldn't stat the compiler!? (argv[0]='%s')\n", args->argv[0]);
|
|
|
486 stats_update(STATS_COMPILER);
|
|
|
487 failed();
|
|
|
488 }
|
|
|
489
|
|
|
490 /* also include the hash of the compiler name - as some compilers
|
|
|
491 use hard links and behave differently depending on the real name */
|
|
|
492 if (st.st_nlink > 1) {
|
|
|
493 hash_string(str_basename(args->argv[0]));
|
|
|
494 }
|
|
|
495
|
|
|
496 hash_int(st.st_size);
|
|
|
497 hash_int(st.st_mtime);
|
|
|
498
|
|
|
499 /* possibly hash the current working directory */
|
|
|
500 if (getenv("CCACHE_HASHDIR")) {
|
|
|
501 char *cwd = gnu_getcwd();
|
|
|
502 if (cwd) {
|
|
|
503 hash_string(cwd);
|
|
|
504 free(cwd);
|
|
|
505 }
|
|
|
506 }
|
|
|
507
|
|
|
508 /* ~/hello.c -> tmp.hello.123.i
|
|
|
509 limit the basename to 10
|
|
|
510 characters in order to cope with filesystem with small
|
|
|
511 maximum filename length limits */
|
|
|
512 input_base = str_basename(input_file);
|
|
|
513 tmp = strchr(input_base, '.');
|
|
|
514 if (tmp != NULL) {
|
|
|
515 *tmp = 0;
|
|
|
516 }
|
|
|
517 if (strlen(input_base) > 10) {
|
|
|
518 input_base[10] = 0;
|
|
|
519 }
|
|
|
520
|
|
|
521 /* now the run */
|
|
|
522 x_asprintf(&path_stdout, "%s/%s.tmp.%s.%s", temp_dir,
|
|
|
523 input_base, tmp_string(),
|
|
|
524 i_extension);
|
|
|
525 x_asprintf(&path_stderr, "%s/tmp.cpp_stderr.%s", temp_dir, tmp_string());
|
|
|
526
|
|
|
527 if (!direct_i_file) {
|
|
|
528 /* run cpp on the input file to obtain the .i */
|
|
|
529 args_add(args, "-E");
|
|
|
530 args_add(args, input_file);
|
|
|
531 status = execute(args->argv, path_stdout, path_stderr);
|
|
|
532 args_pop(args, 2);
|
|
|
533 } else {
|
|
|
534 /* we are compiling a .i or .ii file - that means we
|
|
|
535 can skip the cpp stage and directly form the
|
|
|
536 correct i_tmpfile */
|
|
|
537 path_stdout = x_strdup(input_file);
|
|
|
538 if (create_empty_file(path_stderr) != 0) {
|
|
|
539 cc_log("failed to create empty stderr file\n");
|
|
|
540 stats_update(STATS_ERROR);
|
|
|
541 failed();
|
|
|
542 }
|
|
|
543 status = 0;
|
|
|
544 }
|
|
|
545
|
|
|
546 if (status != 0) {
|
|
|
547 if (!direct_i_file) {
|
|
|
548 unlink(path_stdout);
|
|
|
549 }
|
|
|
550 unlink(path_stderr);
|
|
|
551 cc_log("the preprocessor gave %d\n", status);
|
|
|
552 stats_update(STATS_PREPROCESSOR);
|
|
|
553 failed();
|
|
|
554 }
|
|
|
555
|
|
|
556 /* if the compilation is with -g then we have to include the whole of the
|
|
|
557 preprocessor output, which means we are sensitive to line number
|
|
|
558 information. Otherwise we can discard line number info, which makes
|
|
|
559 us less sensitive to reformatting changes
|
|
|
560
|
|
|
561 Note! I have now disabled the unification code by default
|
|
|
562 as it gives the wrong line numbers for warnings. Pity.
|
|
|
563 */
|
|
|
564 if (!enable_unify) {
|
|
|
565 hash_file(path_stdout);
|
|
|
566 } else {
|
|
|
567 if (unify_hash(path_stdout) != 0) {
|
|
|
568 stats_update(STATS_ERROR);
|
|
|
569 failed();
|
|
|
570 }
|
|
|
571 }
|
|
|
572 hash_file(path_stderr);
|
|
|
573
|
|
|
574 i_tmpfile = path_stdout;
|
|
|
575
|
|
|
576 if (!getenv("CCACHE_CPP2")) {
|
|
|
577 /* if we are using the CPP trick then we need to remember this stderr
|
|
|
578 data and output it just before the main stderr from the compiler
|
|
|
579 pass */
|
|
|
580 cpp_stderr = path_stderr;
|
|
|
581 } else {
|
|
|
582 unlink(path_stderr);
|
|
|
583 free(path_stderr);
|
|
|
584 }
|
|
|
585
|
|
|
586 /* we use a N level subdir for the cache path to reduce the impact
|
|
|
587 on filesystems which are slow for large directories
|
|
|
588 */
|
|
|
589 s = hash_result();
|
|
|
590 x_asprintf(&hash_dir, "%s/%c", cache_dir, s[0]);
|
|
|
591 x_asprintf(&stats_file, "%s/stats", hash_dir);
|
|
|
592 for (i=1; i<nlevels; i++) {
|
|
|
593 char *p;
|
|
|
594 if (create_dir(hash_dir) != 0) {
|
|
|
595 cc_log("failed to create %s\n", hash_dir);
|
|
|
596 stats_update(STATS_ERROR);
|
|
|
597 failed();
|
|
|
598 }
|
|
|
599 x_asprintf(&p, "%s/%c", hash_dir, s[i]);
|
|
|
600 free(hash_dir);
|
|
|
601 hash_dir = p;
|
|
|
602 }
|
|
|
603 if (create_dir(hash_dir) != 0) {
|
|
|
604 cc_log("failed to create %s\n", hash_dir);
|
|
|
605 stats_update(STATS_ERROR);
|
|
|
606 failed();
|
|
|
607 }
|
|
|
608 x_asprintf(&hashname, "%s/%s", hash_dir, s+nlevels);
|
|
|
609 free(hash_dir);
|
|
|
610 }
|
|
|
611
|
|
|
612 /*
|
|
|
613 try to return the compile result from cache. If we can return from
|
|
|
614 cache then this function exits with the correct status code,
|
|
|
615 otherwise it returns */
|
|
|
616 static void from_cache(int first)
|
|
|
617 {
|
|
|
618 int fd_stderr, fd_cpp_stderr;
|
|
|
619 char *stderr_file;
|
|
|
620 struct stat st;
|
|
|
621
|
|
|
622 x_asprintf(&stderr_file, "%s.stderr", hashname);
|
|
|
623 fd_stderr = open(stderr_file, O_RDONLY | O_BINARY);
|
|
|
624 if (fd_stderr == -1) {
|
|
|
625 /* it isn't in cache ... */
|
|
|
626 free(stderr_file);
|
|
|
627 return;
|
|
|
628 }
|
|
|
629
|
|
|
630 /* make sure the output is there too */
|
|
|
631 if (stat(hashname, &st) != 0) {
|
|
|
632 close(fd_stderr);
|
|
|
633 unlink(stderr_file);
|
|
|
634 free(stderr_file);
|
|
|
635 return;
|
|
|
636 }
|
|
|
637
|
|
|
638 /* the user might be disabling cache hits */
|
|
|
639 #ifndef ENABLE_ZLIB
|
|
|
640 /* if the cache file is compressed we must recache */
|
|
|
641 if ((first && getenv("CCACHE_RECACHE")) ||
|
|
|
642 test_if_compressed(hashname) == 1)
|
|
|
643 #else
|
|
|
644 if (first && getenv("CCACHE_RECACHE"))
|
|
|
645 #endif
|
|
|
646 {
|
|
|
647 close(fd_stderr);
|
|
|
648 unlink(stderr_file);
|
|
|
649 free(stderr_file);
|
|
|
650 return;
|
|
|
651 }
|
|
|
652
|
|
|
653 if (first) {
|
|
|
654 int hardlink;
|
|
|
655 int passfail = -1;
|
|
|
656
|
|
|
657 /* update timestamps for LRU cleanup
|
|
|
658 also gives output_file a sensible mtime when hard-linking (for make) */
|
|
|
659 x_utimes(stderr_file);
|
|
|
660
|
|
|
661 hardlink = (getenv("CCACHE_HARDLINK") != 0);
|
|
|
662
|
|
|
663 if (swig) {
|
|
|
664 /* read the list of generated files and copy each of them out of the cache */
|
|
|
665 FILE *file;
|
|
|
666 char *outfiles;
|
|
|
667 x_asprintf(&outfiles, "%s.outfiles", hashname);
|
|
|
668 file = fopen(outfiles, "r");
|
|
|
669 if (file) {
|
|
|
670 char out_filename[FILENAME_MAX + 1];
|
|
|
671 char out_filename_cache[FILENAME_MAX + 1];
|
|
|
672 int retrieved_files_count = 0;
|
|
|
673 x_utimes(outfiles);
|
|
|
674 while (fgets(out_filename, FILENAME_MAX, file)) {
|
|
|
675 char *linefeed = strchr(out_filename, '\n');
|
|
|
676 if (linefeed) {
|
|
|
677 char *potential_cr = linefeed - 1;
|
|
|
678 if (potential_cr >= out_filename && *potential_cr == '\r')
|
|
|
679 *potential_cr = 0;
|
|
|
680 *linefeed = 0;
|
|
|
681
|
|
|
682 if (retrieved_files_count == 0) {
|
|
|
683 strcpy(out_filename_cache, hashname);
|
|
|
684 } else {
|
|
|
685 sprintf(out_filename_cache, "%s.%d", hashname, retrieved_files_count);
|
|
|
686 }
|
|
|
687
|
|
|
688 passfail = retrieve_from_cache(out_filename_cache, out_filename, hardlink);
|
|
|
689 if (passfail == -1) {
|
|
|
690 break;
|
|
|
691 }
|
|
|
692
|
|
|
693 retrieved_files_count++;
|
|
|
694 } else {
|
|
|
695 cc_log("failed to copy output files from cache - internal error\n");
|
|
|
696 stats_update(STATS_ERROR);
|
|
|
697 passfail = -1;
|
|
|
698 break;
|
|
|
699 }
|
|
|
700 }
|
|
|
701 if (retrieved_files_count == 0) {
|
|
|
702 cc_log("failed to copy output files from cache - internal error\n");
|
|
|
703 stats_update(STATS_ERROR);
|
|
|
704 passfail = -1;
|
|
|
705 }
|
|
|
706 fclose(file);
|
|
|
707 } else {
|
|
|
708 cc_log("failed to open cached outfiles file - %s\n", strerror(errno));
|
|
|
709 stats_update(STATS_ERROR);
|
|
|
710 }
|
|
|
711 } else {
|
|
|
712 passfail = retrieve_from_cache(hashname, output_file, hardlink);
|
|
|
713 }
|
|
|
714
|
|
|
715 if (passfail == -1) {
|
|
|
716 close(fd_stderr);
|
|
|
717 unlink(stderr_file);
|
|
|
718 free(stderr_file);
|
|
|
719 return;
|
|
|
720 }
|
|
|
721 free(stderr_file);
|
|
|
722 }
|
|
|
723
|
|
|
724 /* get rid of the intermediate preprocessor file */
|
|
|
725 if (i_tmpfile) {
|
|
|
726 if (!direct_i_file) {
|
|
|
727 unlink(i_tmpfile);
|
|
|
728 }
|
|
|
729 free(i_tmpfile);
|
|
|
730 i_tmpfile = NULL;
|
|
|
731 }
|
|
|
732
|
|
|
733 /* send the cpp stderr, if applicable */
|
|
|
734 fd_cpp_stderr = open(cpp_stderr, O_RDONLY | O_BINARY);
|
|
|
735 if (fd_cpp_stderr != -1) {
|
|
|
736 copy_fd(fd_cpp_stderr, 2);
|
|
|
737 close(fd_cpp_stderr);
|
|
|
738 unlink(cpp_stderr);
|
|
|
739 free(cpp_stderr);
|
|
|
740 cpp_stderr = NULL;
|
|
|
741 }
|
|
|
742
|
|
|
743 /* send the stderr */
|
|
|
744 copy_fd(fd_stderr, 2);
|
|
|
745 close(fd_stderr);
|
|
|
746
|
|
|
747 /* and exit with the right status code */
|
|
|
748 if (first) {
|
|
|
749 cc_log("got cached result for %s\n", input_file);
|
|
|
750 stats_update(STATS_CACHED);
|
|
|
751 }
|
|
|
752
|
|
|
753 exit(0);
|
|
|
754 }
|
|
|
755
|
|
|
756 /* find the real compiler. We just search the PATH to find a executable of the
|
|
|
757 same name that isn't a link to ourselves */
|
|
|
758 static void find_compiler(int argc, char **argv)
|
|
|
759 {
|
|
|
760 char *base;
|
|
|
761 char *path;
|
|
|
762
|
|
|
763 orig_args = args_init(argc, argv);
|
|
|
764
|
|
|
765 base = str_basename(argv[0]);
|
|
|
766
|
|
|
767 /* we might be being invoked like "ccache gcc -c foo.c" */
|
|
|
768 if (strcmp(base, MYNAME) == 0) {
|
|
|
769 args_remove_first(orig_args);
|
|
|
770 free(base);
|
|
|
771 if (strchr(argv[1],'/')
|
|
|
772 #ifdef _WIN32
|
|
|
773 || strchr(argv[1],'\\')
|
|
|
774 #endif
|
|
|
775 ) {
|
|
|
776 /* a full path was given */
|
|
|
777 return;
|
|
|
778 }
|
|
|
779 base = str_basename(argv[1]);
|
|
|
780 }
|
|
|
781
|
|
|
782 /* support user override of the compiler */
|
|
|
783 if ((path=getenv("CCACHE_CC"))) {
|
|
|
784 base = x_strdup(path);
|
|
|
785 }
|
|
|
786
|
|
|
787 orig_args->argv[0] = find_executable(base, MYNAME);
|
|
|
788
|
|
|
789 /* can't find the compiler! */
|
|
|
790 if (!orig_args->argv[0]) {
|
|
|
791 stats_update(STATS_COMPILER);
|
|
|
792 cc_log("could not find compiler (%s)\n", base);
|
|
|
793 perror(base);
|
|
|
794 exit(1);
|
|
|
795 }
|
|
|
796 }
|
|
|
797
|
|
|
798
|
|
|
799 /* check a filename for C/C++ extension. Return the pre-processor
|
|
|
800 extension */
|
|
|
801 static const char *check_extension(const char *fname, int *direct_i)
|
|
|
802 {
|
|
|
803 int i;
|
|
|
804 const char *p;
|
|
|
805
|
|
|
806 if (direct_i) {
|
|
|
807 *direct_i = 0;
|
|
|
808 }
|
|
|
809
|
|
|
810 if (swig) return "ii"; /* any file extension is acceptable as input for SWIG */
|
|
|
811
|
|
|
812 p = strrchr(fname, '.');
|
|
|
813 if (!p) return NULL;
|
|
|
814 p++;
|
|
|
815 for (i=0; extensions[i].extension; i++) {
|
|
|
816 if (strcmp(p, extensions[i].extension) == 0) {
|
|
|
817 if (direct_i && strcmp(p, extensions[i].i_extension) == 0) {
|
|
|
818 *direct_i = 1;
|
|
|
819 }
|
|
|
820 p = getenv("CCACHE_EXTENSION");
|
|
|
821 if (p) return p;
|
|
|
822 return extensions[i].i_extension;
|
|
|
823 }
|
|
|
824 }
|
|
|
825 return NULL;
|
|
|
826 }
|
|
|
827
|
|
|
828
|
|
|
829 /*
|
|
|
830 process the compiler options to form the correct set of options
|
|
|
831 for obtaining the preprocessor output
|
|
|
832 */
|
|
|
833 static void process_args(int argc, char **argv)
|
|
|
834 {
|
|
|
835 int i;
|
|
|
836 int found_c_opt = 0;
|
|
|
837 int found_S_opt = 0;
|
|
|
838 struct stat st;
|
|
|
839 char *e;
|
|
|
840 /* is gcc being asked to output dependencies? */
|
|
|
841 int generating_dependencies = 0;
|
|
|
842 /* is the dependency makefile name overridden with -MF? */
|
|
|
843 int dependency_filename_specified = 0;
|
|
|
844 /* is the dependency makefile target name specified with -MQ or -MF? */
|
|
|
845 int dependency_target_specified = 0;
|
|
|
846
|
|
|
847
|
|
|
848 stripped_args = args_init(0, NULL);
|
|
|
849
|
|
|
850 args_add(stripped_args, argv[0]);
|
|
|
851
|
|
|
852 /* -c not required for SWIG */
|
|
|
853 if (swig) {
|
|
|
854 found_c_opt = 1;
|
|
|
855 }
|
|
|
856
|
|
|
857 for (i=1; i<argc; i++) {
|
|
|
858 /* some options will never work ... */
|
|
|
859 if (strcmp(argv[i], "-E") == 0) {
|
|
|
860 failed();
|
|
|
861 }
|
|
|
862
|
|
|
863 /* these are too hard */
|
|
|
864 if (strcmp(argv[i], "-fbranch-probabilities")==0 ||
|
|
|
865 strcmp(argv[i], "-fprofile-arcs") == 0 ||
|
|
|
866 strcmp(argv[i], "-ftest-coverage") == 0 ||
|
|
|
867 strcmp(argv[i], "--coverage") == 0 ||
|
|
|
868 strcmp(argv[i], "-M") == 0 ||
|
|
|
869 strcmp(argv[i], "-MM") == 0 ||
|
|
|
870 strcmp(argv[i], "-x") == 0) {
|
|
|
871 cc_log("argument %s is unsupported\n", argv[i]);
|
|
|
872 stats_update(STATS_UNSUPPORTED);
|
|
|
873 failed();
|
|
|
874 continue;
|
|
|
875 }
|
|
|
876
|
|
|
877 /* we must have -c */
|
|
|
878 if (strcmp(argv[i], "-c") == 0) {
|
|
|
879 if (!strip_c_option) {
|
|
|
880 args_add(stripped_args, argv[i]);
|
|
|
881 }
|
|
|
882 found_c_opt = 1;
|
|
|
883 continue;
|
|
|
884 }
|
|
|
885
|
|
|
886 /* -S changes the default extension */
|
|
|
887 if (strcmp(argv[i], "-S") == 0) {
|
|
|
888 args_add(stripped_args, argv[i]);
|
|
|
889 found_S_opt = 1;
|
|
|
890 continue;
|
|
|
891 }
|
|
|
892
|
|
|
893 /* we need to work out where the output was meant to go */
|
|
|
894 if (strcmp(argv[i], "-o") == 0) {
|
|
|
895 if (i == argc-1) {
|
|
|
896 cc_log("missing argument to %s\n", argv[i]);
|
|
|
897 stats_update(STATS_ARGS);
|
|
|
898 failed();
|
|
|
899 }
|
|
|
900 output_file = argv[i+1];
|
|
|
901 i++;
|
|
|
902 continue;
|
|
|
903 }
|
|
|
904
|
|
|
905 /* alternate form of -o, with no space */
|
|
|
906 if (!swig) { /* some of SWIG's arguments begin with -o */
|
|
|
907 if (strncmp(argv[i], "-o", 2) == 0) {
|
|
|
908 output_file = &argv[i][2];
|
|
|
909 continue;
|
|
|
910 }
|
|
|
911 }
|
|
|
912
|
|
|
913 /* debugging is handled specially, so that we know if we
|
|
|
914 can strip line number info
|
|
|
915 */
|
|
|
916 if (strncmp(argv[i], "-g", 2) == 0) {
|
|
|
917 args_add(stripped_args, argv[i]);
|
|
|
918 if (strcmp(argv[i], "-g0") != 0) {
|
|
|
919 enable_unify = 0;
|
|
|
920 }
|
|
|
921 continue;
|
|
|
922 }
|
|
|
923
|
|
|
924 /* The user knows best: just swallow the next arg */
|
|
|
925 if (strcmp(argv[i], "--ccache-skip") == 0) {
|
|
|
926 i++;
|
|
|
927 if (i == argc) {
|
|
|
928 failed();
|
|
|
929 }
|
|
|
930 args_add(stripped_args, argv[i]);
|
|
|
931 continue;
|
|
|
932 }
|
|
|
933
|
|
|
934 /* These options require special handling, because they
|
|
|
935 behave differently with gcc -E, when the output
|
|
|
936 file is not specified. */
|
|
|
937
|
|
|
938 if (strcmp(argv[i], "-MD") == 0 || strcmp(argv[i], "-MMD") == 0) {
|
|
|
939 generating_dependencies = 1;
|
|
|
940 } else if (strcmp(argv[i], "-MF") == 0) {
|
|
|
941 dependency_filename_specified = 1;
|
|
|
942 } else if (strcmp(argv[i], "-MQ") == 0 || strcmp(argv[i], "-MT") == 0) {
|
|
|
943 dependency_target_specified = 1;
|
|
|
944 }
|
|
|
945
|
|
|
946 /* the input file is already preprocessed */
|
|
|
947 if (swig && strcmp(argv[i], "-nopreprocess") == 0) {
|
|
|
948 direct_i_file = 1;
|
|
|
949 continue;
|
|
|
950 }
|
|
|
951
|
|
|
952 /* options that take an argument */
|
|
|
953 {
|
|
|
954 const char *opts[] = {"-I", "-include", "-imacros", "-iprefix",
|
|
|
955 "-iwithprefix", "-iwithprefixbefore",
|
|
|
956 "-L", "-D", "-U", "-x", "-MF",
|
|
|
957 "-MT", "-MQ", "-isystem", "-aux-info",
|
|
|
958 "--param", "-A", "-Xlinker", "-u",
|
|
|
959 "-idirafter",
|
|
|
960 NULL};
|
|
|
961 int j;
|
|
|
962 for (j=0;opts[j];j++) {
|
|
|
963 if (strcmp(argv[i], opts[j]) == 0) {
|
|
|
964 if (i == argc-1) {
|
|
|
965 cc_log("missing argument to %s\n",
|
|
|
966 argv[i]);
|
|
|
967 stats_update(STATS_ARGS);
|
|
|
968 failed();
|
|
|
969 }
|
|
|
970
|
|
|
971 args_add(stripped_args, argv[i]);
|
|
|
972 args_add(stripped_args, argv[i+1]);
|
|
|
973 i++;
|
|
|
974 break;
|
|
|
975 }
|
|
|
976 }
|
|
|
977 if (opts[j]) continue;
|
|
|
978 }
|
|
|
979
|
|
|
980 /* other options */
|
|
|
981 if (argv[i][0] == '-') {
|
|
|
982 args_add(stripped_args, argv[i]);
|
|
|
983 continue;
|
|
|
984 }
|
|
|
985
|
|
|
986 /* if an argument isn't a plain file then assume its
|
|
|
987 an option, not an input file. This allows us to
|
|
|
988 cope better with unusual compiler options */
|
|
|
989 if (stat(argv[i], &st) != 0 || !S_ISREG(st.st_mode)) {
|
|
|
990 args_add(stripped_args, argv[i]);
|
|
|
991 continue;
|
|
|
992 }
|
|
|
993
|
|
|
994 if (input_file) {
|
|
|
995 if (check_extension(argv[i], NULL)) {
|
|
|
996 cc_log("multiple input files (%s and %s)\n",
|
|
|
997 input_file, argv[i]);
|
|
|
998 stats_update(STATS_MULTIPLE);
|
|
|
999 } else if (!found_c_opt) {
|
|
|
1000 cc_log("called for link with %s\n", argv[i]);
|
|
|
1001 if (strstr(argv[i], "conftest.")) {
|
|
|
1002 stats_update(STATS_CONFTEST);
|
|
|
1003 } else {
|
|
|
1004 stats_update(STATS_LINK);
|
|
|
1005 }
|
|
|
1006 } else {
|
|
|
1007 cc_log("non C/C++ file %s\n", argv[i]);
|
|
|
1008 stats_update(STATS_NOTC);
|
|
|
1009 }
|
|
|
1010 failed();
|
|
|
1011 }
|
|
|
1012
|
|
|
1013 input_file = argv[i];
|
|
|
1014 }
|
|
|
1015
|
|
|
1016 if (!input_file) {
|
|
|
1017 cc_log("No input file found\n");
|
|
|
1018 stats_update(STATS_NOINPUT);
|
|
|
1019 failed();
|
|
|
1020 }
|
|
|
1021
|
|
|
1022 if (swig) {
|
|
|
1023 i_extension = check_extension(input_file, NULL);
|
|
|
1024 } else {
|
|
|
1025 i_extension = check_extension(input_file, &direct_i_file);
|
|
|
1026 }
|
|
|
1027 if (i_extension == NULL) {
|
|
|
1028 cc_log("Not a C/C++ file - %s\n", input_file);
|
|
|
1029 stats_update(STATS_NOTC);
|
|
|
1030 failed();
|
|
|
1031 }
|
|
|
1032
|
|
|
1033 if (!found_c_opt) {
|
|
|
1034 cc_log("No -c option found for %s\n", input_file);
|
|
|
1035 /* I find that having a separate statistic for autoconf tests is useful,
|
|
|
1036 as they are the dominant form of "called for link" in many cases */
|
|
|
1037 if (strstr(input_file, "conftest.")) {
|
|
|
1038 stats_update(STATS_CONFTEST);
|
|
|
1039 } else {
|
|
|
1040 stats_update(STATS_LINK);
|
|
|
1041 }
|
|
|
1042 failed();
|
|
|
1043 }
|
|
|
1044
|
|
|
1045
|
|
|
1046 /* don't try to second guess the compilers heuristics for stdout handling */
|
|
|
1047 if (output_file && strcmp(output_file, "-") == 0) {
|
|
|
1048 stats_update(STATS_OUTSTDOUT);
|
|
|
1049 failed();
|
|
|
1050 }
|
|
|
1051
|
|
|
1052 if (!swig && !output_file) {
|
|
|
1053 char *p;
|
|
|
1054 output_file = x_strdup(input_file);
|
|
|
1055 if ((p = strrchr(output_file, '/'))) {
|
|
|
1056 output_file = p+1;
|
|
|
1057 }
|
|
|
1058 p = strrchr(output_file, '.');
|
|
|
1059 if (!p || !p[1]) {
|
|
|
1060 cc_log("badly formed output_file %s\n", output_file);
|
|
|
1061 stats_update(STATS_ARGS);
|
|
|
1062 failed();
|
|
|
1063 }
|
|
|
1064 p[1] = found_S_opt ? 's' : 'o';
|
|
|
1065 p[2] = 0;
|
|
|
1066 }
|
|
|
1067
|
|
|
1068 /* If dependencies are generated, configure the preprocessor */
|
|
|
1069
|
|
|
1070 if (generating_dependencies && output_file) {
|
|
|
1071 if (!dependency_filename_specified) {
|
|
|
1072 char *default_depfile_name = x_strdup(output_file);
|
|
|
1073 char *p = strrchr(default_depfile_name, '.');
|
|
|
1074
|
|
|
1075 if (p) {
|
|
|
1076 if (strlen(p) < 2) {
|
|
|
1077 cc_log("badly formed dependency file %s\n", output_file);
|
|
|
1078 stats_update(STATS_ARGS);
|
|
|
1079 failed();
|
|
|
1080 return;
|
|
|
1081 }
|
|
|
1082 *p = 0;
|
|
|
1083 }
|
|
|
1084 else {
|
|
|
1085 int len = p - default_depfile_name;
|
|
|
1086
|
|
|
1087 p = x_malloc(len + 3);
|
|
|
1088 strncpy(default_depfile_name, p, len - 1);
|
|
|
1089 free(default_depfile_name);
|
|
|
1090 default_depfile_name = p;
|
|
|
1091 }
|
|
|
1092
|
|
|
1093 strcat(default_depfile_name, ".d");
|
|
|
1094 args_add(stripped_args, "-MF");
|
|
|
1095 args_add(stripped_args, default_depfile_name);
|
|
|
1096 }
|
|
|
1097
|
|
|
1098 if (!dependency_target_specified) {
|
|
|
1099 args_add(stripped_args, "-MT");
|
|
|
1100 args_add(stripped_args, output_file);
|
|
|
1101 }
|
|
|
1102 }
|
|
|
1103
|
|
|
1104 /* cope with -o /dev/null */
|
|
|
1105 if (output_file && strcmp(output_file,"/dev/null") != 0 && stat(output_file, &st) == 0 && !S_ISREG(st.st_mode)) {
|
|
|
1106 cc_log("Not a regular file %s\n", output_file);
|
|
|
1107 stats_update(STATS_DEVICE);
|
|
|
1108 failed();
|
|
|
1109 }
|
|
|
1110
|
|
|
1111 if ((e=getenv("CCACHE_PREFIX"))) {
|
|
|
1112 char *p = find_executable(e, MYNAME);
|
|
|
1113 if (!p) {
|
|
|
1114 cc_log("could not find executable (%s)\n", e);
|
|
|
1115 stats_update(STATS_ENVIRONMMENT);
|
|
|
1116 perror(e);
|
|
|
1117 exit(1);
|
|
|
1118 }
|
|
|
1119 args_add_prefix(stripped_args, p);
|
|
|
1120 }
|
|
|
1121 }
|
|
|
1122
|
|
|
1123 static void detect_swig()
|
|
|
1124 {
|
|
|
1125 char *basename = str_basename(orig_args->argv[0]);
|
|
|
1126 if (strstr(basename, "swig") || getenv("CCACHE_SWIG")) {
|
|
|
1127 swig = 1;
|
|
|
1128 }
|
|
|
1129 free(basename);
|
|
|
1130 }
|
|
|
1131
|
|
|
1132 /* the main ccache driver function */
|
|
|
1133 static void ccache(int argc, char *argv[])
|
|
|
1134 {
|
|
|
1135 /* find the real compiler */
|
|
|
1136 find_compiler(argc, argv);
|
|
|
1137
|
|
|
1138 /* use the real compiler if HOME is not set */
|
|
|
1139 if (!cache_dir) {
|
|
|
1140 cc_log("Unable to determine home directory\n");
|
|
|
1141 cc_log("ccache is disabled\n");
|
|
|
1142 failed();
|
|
|
1143 }
|
|
|
1144
|
|
|
1145 /* we might be disabled */
|
|
|
1146 if (getenv("CCACHE_DISABLE")) {
|
|
|
1147 cc_log("ccache is disabled\n");
|
|
|
1148 failed();
|
|
|
1149 }
|
|
|
1150
|
|
|
1151 if (getenv("CCACHE_STRIPC")) {
|
|
|
1152 strip_c_option = 1;
|
|
|
1153 }
|
|
|
1154
|
|
|
1155 if (getenv("CCACHE_UNIFY")) {
|
|
|
1156 enable_unify = 1;
|
|
|
1157 }
|
|
|
1158
|
|
|
1159 detect_swig();
|
|
|
1160
|
|
|
1161 /* process argument list, returning a new set of arguments for pre-processing */
|
|
|
1162 process_args(orig_args->argc, orig_args->argv);
|
|
|
1163
|
|
|
1164 /* run with -E to find the hash */
|
|
|
1165 find_hash(stripped_args);
|
|
|
1166
|
|
|
1167 /* if we can return from cache at this point then do */
|
|
|
1168 from_cache(1);
|
|
|
1169
|
|
|
1170 if (getenv("CCACHE_READONLY")) {
|
|
|
1171 cc_log("read-only set - doing real compile\n");
|
|
|
1172 failed();
|
|
|
1173 }
|
|
|
1174
|
|
|
1175 /* run real compiler, sending output to cache */
|
|
|
1176 to_cache(stripped_args);
|
|
|
1177
|
|
|
1178 /* return from cache */
|
|
|
1179 from_cache(0);
|
|
|
1180
|
|
|
1181 /* oh oh! */
|
|
|
1182 cc_log("secondary from_cache failed!\n");
|
|
|
1183 stats_update(STATS_ERROR);
|
|
|
1184 failed();
|
|
|
1185 }
|
|
|
1186
|
|
|
1187
|
|
|
1188 static void usage(void)
|
|
|
1189 {
|
|
|
1190 printf("%s, a compiler cache including support for SWIG. Version %s\n", MYNAME, CCACHE_VERSION);
|
|
|
1191 printf("Copyright Andrew Tridgell, 2002\n\n");
|
|
|
1192
|
|
|
1193 printf("Usage:\n");
|
|
|
1194 printf("\t" MYNAME " [options]\n");
|
|
|
1195 printf("\t" MYNAME " compiler [compile options]\n");
|
|
|
1196 printf("\tcompiler [compile options] (via symbolic link)\n");
|
|
|
1197 printf("\nOptions:\n");
|
|
|
1198
|
|
|
1199 printf("-s show statistics summary\n");
|
|
|
1200 printf("-z zero statistics\n");
|
|
|
1201 printf("-c run a cache cleanup\n");
|
|
|
1202 printf("-C clear the cache completely\n");
|
|
|
1203 printf("-F <maxfiles> set maximum files in cache\n");
|
|
|
1204 printf("-M <maxsize> set maximum size of cache (use G, M or K)\n");
|
|
|
1205 printf("-h this help page\n");
|
|
|
1206 printf("-V print version number\n");
|
|
|
1207 }
|
|
|
1208
|
|
|
1209 static void check_cache_dir(void)
|
|
|
1210 {
|
|
|
1211 if (!cache_dir) {
|
|
|
1212 fatal("Unable to determine home directory");
|
|
|
1213 }
|
|
|
1214 }
|
|
|
1215
|
|
|
1216 /* the main program when not doing a compile */
|
|
|
1217 static int ccache_main(int argc, char *argv[])
|
|
|
1218 {
|
|
|
1219 int c;
|
|
|
1220 size_t v;
|
|
|
1221
|
|
|
1222 while ((c = getopt(argc, argv, "hszcCF:M:V")) != -1) {
|
|
|
1223 switch (c) {
|
|
|
1224 case 'V':
|
|
|
1225 printf("%s version %s\n", MYNAME, CCACHE_VERSION);
|
|
|
1226 printf("Copyright Andrew Tridgell 2002\n");
|
|
|
1227 printf("Released under the GNU GPL v2 or later\n");
|
|
|
1228 exit(0);
|
|
|
1229
|
|
|
1230 case 'h':
|
|
|
1231 usage();
|
|
|
1232 exit(0);
|
|
|
1233
|
|
|
1234 case 's':
|
|
|
1235 check_cache_dir();
|
|
|
1236 stats_summary();
|
|
|
1237 break;
|
|
|
1238
|
|
|
1239 case 'c':
|
|
|
1240 check_cache_dir();
|
|
|
1241 cleanup_all(cache_dir);
|
|
|
1242 printf("Cleaned cache\n");
|
|
|
1243 break;
|
|
|
1244
|
|
|
1245 case 'C':
|
|
|
1246 check_cache_dir();
|
|
|
1247 wipe_all(cache_dir);
|
|
|
1248 printf("Cleared cache\n");
|
|
|
1249 break;
|
|
|
1250
|
|
|
1251 case 'z':
|
|
|
1252 check_cache_dir();
|
|
|
1253 stats_zero();
|
|
|
1254 printf("Statistics cleared\n");
|
|
|
1255 break;
|
|
|
1256
|
|
|
1257 case 'F':
|
|
|
1258 check_cache_dir();
|
|
|
1259 v = atoi(optarg);
|
|
|
1260 if (stats_set_limits(v, -1) == 0) {
|
|
|
1261 printf("Set cache file limit to %u\n", (unsigned)v);
|
|
|
1262 } else {
|
|
|
1263 printf("Could not set cache file limit.\n");
|
|
|
1264 exit(1);
|
|
|
1265 }
|
|
|
1266 break;
|
|
|
1267
|
|
|
1268 case 'M':
|
|
|
1269 check_cache_dir();
|
|
|
1270 v = value_units(optarg);
|
|
|
1271 if (stats_set_limits(-1, v) == 0) {
|
|
|
1272 printf("Set cache size limit to %uk\n", (unsigned)v);
|
|
|
1273 } else {
|
|
|
1274 printf("Could not set cache size limit.\n");
|
|
|
1275 exit(1);
|
|
|
1276 }
|
|
|
1277 break;
|
|
|
1278
|
|
|
1279 default:
|
|
|
1280 usage();
|
|
|
1281 exit(1);
|
|
|
1282 }
|
|
|
1283 }
|
|
|
1284
|
|
|
1285 return 0;
|
|
|
1286 }
|
|
|
1287
|
|
|
1288
|
|
|
1289 /* Make a copy of stderr that will not be cached, so things like
|
|
|
1290 distcc can send networking errors to it. */
|
|
|
1291 static void setup_uncached_err(void)
|
|
|
1292 {
|
|
|
1293 char *buf;
|
|
|
1294 int uncached_fd;
|
|
|
1295
|
|
|
1296 uncached_fd = dup(2);
|
|
|
1297 if (uncached_fd == -1) {
|
|
|
1298 cc_log("dup(2) failed\n");
|
|
|
1299 stats_update(STATS_ERROR);
|
|
|
1300 failed();
|
|
|
1301 }
|
|
|
1302
|
|
|
1303 /* leak a pointer to the environment */
|
|
|
1304 x_asprintf(&buf, "UNCACHED_ERR_FD=%d", uncached_fd);
|
|
|
1305
|
|
|
1306 if (putenv(buf) == -1) {
|
|
|
1307 cc_log("putenv failed\n");
|
|
|
1308 stats_update(STATS_ERROR);
|
|
|
1309 failed();
|
|
|
1310 }
|
|
|
1311 }
|
|
|
1312
|
|
|
1313
|
|
|
1314 int main(int argc, char *argv[])
|
|
|
1315 {
|
|
|
1316 char *p;
|
|
|
1317
|
|
|
1318 cache_dir = getenv("CCACHE_DIR");
|
|
|
1319 if (!cache_dir) {
|
|
|
1320 const char *home_directory = get_home_directory();
|
|
|
1321 if (home_directory) {
|
|
|
1322 x_asprintf(&cache_dir, "%s/.ccache", home_directory);
|
|
|
1323 }
|
|
|
1324 }
|
|
|
1325
|
|
|
1326 cache_logfile = getenv("CCACHE_LOGFILE");
|
|
|
1327
|
|
|
1328 if (getenv("CCACHE_VERBOSE")) {
|
|
|
1329 ccache_verbose = 1;
|
|
|
1330 }
|
|
|
1331
|
|
|
1332 setup_uncached_err();
|
|
|
1333
|
|
|
1334
|
|
|
1335 /* the user might have set CCACHE_UMASK */
|
|
|
1336 p = getenv("CCACHE_UMASK");
|
|
|
1337 if (p) {
|
|
|
1338 mode_t mask;
|
|
|
1339 errno = 0;
|
|
|
1340 mask = strtol(p, NULL, 8);
|
|
|
1341 if (errno == 0) {
|
|
|
1342 umask(mask);
|
|
|
1343 }
|
|
|
1344 }
|
|
|
1345
|
|
|
1346
|
|
|
1347 /* check if we are being invoked as "ccache" */
|
|
|
1348 if (strlen(argv[0]) >= strlen(MYNAME) &&
|
|
|
1349 strcmp(argv[0] + strlen(argv[0]) - strlen(MYNAME), MYNAME) == 0) {
|
|
|
1350 if (argc < 2) {
|
|
|
1351 usage();
|
|
|
1352 exit(1);
|
|
|
1353 }
|
|
|
1354 /* if the first argument isn't an option, then assume we are
|
|
|
1355 being passed a compiler name and options */
|
|
|
1356 if (argv[1][0] == '-') {
|
|
|
1357 return ccache_main(argc, argv);
|
|
|
1358 }
|
|
|
1359 }
|
|
|
1360
|
|
|
1361 /* make sure the cache dir exists */
|
|
|
1362 if (cache_dir && (create_dir(cache_dir) != 0)) {
|
|
|
1363 fprintf(stderr,"ccache: failed to create %s (%s)\n",
|
|
|
1364 cache_dir, strerror(errno));
|
|
|
1365 exit(1);
|
|
|
1366 }
|
|
|
1367
|
|
|
1368 temp_dir = getenv("CCACHE_TEMPDIR");
|
|
|
1369 if (!temp_dir) {
|
|
|
1370 x_asprintf(&temp_dir, "%s/temp", cache_dir);
|
|
|
1371 /* make sure temp dir exists if not supplied by user */
|
|
|
1372 if (temp_dir && create_dir(temp_dir) != 0) {
|
|
|
1373 fprintf(stderr,"ccache: failed to create %s (%s)\n",
|
|
|
1374 temp_dir, strerror(errno));
|
|
|
1375 exit(1);
|
|
|
1376 }
|
|
|
1377 }
|
|
|
1378
|
|
|
1379 if (!getenv("CCACHE_READONLY")) {
|
|
|
1380 if (create_cachedirtag(cache_dir) != 0) {
|
|
|
1381 fprintf(stderr,"ccache: failed to create %s/CACHEDIR.TAG (%s)\n",
|
|
|
1382 cache_dir, strerror(errno));
|
|
|
1383 exit(1);
|
|
|
1384 }
|
|
|
1385 }
|
|
|
1386
|
|
|
1387 ccache(argc, argv);
|
|
|
1388 return 1;
|
|
|
1389 }
|
