1 | #
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2 | # For a description of the syntax of this configuration file,
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3 | # see scripts/kbuild/config-language.txt.
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4 | #
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5 |
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6 | menu "Archival Utilities"
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7 |
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8 | INSERT
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9 |
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10 | config FEATURE_SEAMLESS_XZ
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11 | bool "Make tar, rpm, modprobe etc understand .xz data"
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12 | default y
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13 | help
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14 | Make tar, rpm, modprobe etc understand .xz data.
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15 |
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16 | config FEATURE_SEAMLESS_LZMA
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17 | bool "Make tar, rpm, modprobe etc understand .lzma data"
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18 | default y
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19 | help
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20 | Make tar, rpm, modprobe etc understand .lzma data.
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21 |
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22 | config FEATURE_SEAMLESS_BZ2
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23 | bool "Make tar, rpm, modprobe etc understand .bz2 data"
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24 | default y
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25 | help
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26 | Make tar, rpm, modprobe etc understand .bz2 data.
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27 |
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28 | config FEATURE_SEAMLESS_GZ
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29 | bool "Make tar, rpm, modprobe etc understand .gz data"
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30 | default y
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31 | help
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32 | Make tar, rpm, modprobe etc understand .gz data.
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33 |
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34 | config FEATURE_SEAMLESS_Z
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35 | bool "Make tar and gunzip understand .Z data"
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36 | default n
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37 | help
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38 | Make tar and gunzip understand .Z data.
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39 |
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40 | config AR
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41 | bool "ar"
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42 | default n # needs to be improved to be able to replace binutils ar
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43 | help
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44 | ar is an archival utility program used to create, modify, and
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45 | extract contents from archives. An archive is a single file holding
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46 | a collection of other files in a structure that makes it possible to
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47 | retrieve the original individual files (called archive members).
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48 | The original files' contents, mode (permissions), timestamp, owner,
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49 | and group are preserved in the archive, and can be restored on
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50 | extraction.
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51 |
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52 | The stored filename is limited to 15 characters. (for more information
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53 | see long filename support).
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54 | ar has 60 bytes of overheads for every stored file.
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55 |
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56 | This implementation of ar can extract archives, it cannot create or
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57 | modify them.
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58 | On an x86 system, the ar applet adds about 1K.
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59 |
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60 | Unless you have a specific application which requires ar, you should
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61 | probably say N here.
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62 |
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63 | config FEATURE_AR_LONG_FILENAMES
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64 | bool "Support for long filenames (not needed for debs)"
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65 | default y
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66 | depends on AR
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67 | help
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68 | By default the ar format can only store the first 15 characters
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69 | of the filename, this option removes that limitation.
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70 | It supports the GNU ar long filename method which moves multiple long
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71 | filenames into a the data section of a new ar entry.
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72 |
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73 | config FEATURE_AR_CREATE
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74 | bool "Support archive creation"
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75 | default y
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76 | depends on AR
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77 | help
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78 | This enables archive creation (-c and -r) with busybox ar.
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79 |
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80 | config BUNZIP2
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81 | bool "bunzip2"
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82 | default y
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83 | help
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84 | bunzip2 is a compression utility using the Burrows-Wheeler block
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85 | sorting text compression algorithm, and Huffman coding. Compression
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86 | is generally considerably better than that achieved by more
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87 | conventional LZ77/LZ78-based compressors, and approaches the
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88 | performance of the PPM family of statistical compressors.
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89 |
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90 | Unless you have a specific application which requires bunzip2, you
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91 | should probably say N here.
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92 |
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93 | config BZIP2
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94 | bool "bzip2"
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95 | default y
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96 | help
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97 | bzip2 is a compression utility using the Burrows-Wheeler block
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98 | sorting text compression algorithm, and Huffman coding. Compression
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99 | is generally considerably better than that achieved by more
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100 | conventional LZ77/LZ78-based compressors, and approaches the
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101 | performance of the PPM family of statistical compressors.
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102 |
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103 | Unless you have a specific application which requires bzip2, you
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104 | should probably say N here.
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105 |
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106 | config CPIO
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107 | bool "cpio"
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108 | default y
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109 | help
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110 | cpio is an archival utility program used to create, modify, and
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111 | extract contents from archives.
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112 | cpio has 110 bytes of overheads for every stored file.
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113 |
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114 | This implementation of cpio can extract cpio archives created in the
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115 | "newc" or "crc" format, it cannot create or modify them.
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116 |
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117 | Unless you have a specific application which requires cpio, you
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118 | should probably say N here.
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119 |
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120 | config FEATURE_CPIO_O
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121 | bool "Support for archive creation"
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122 | default y
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123 | depends on CPIO
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124 | help
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125 | This implementation of cpio can create cpio archives in the "newc"
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126 | format only.
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127 |
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128 | config FEATURE_CPIO_P
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129 | bool "Support for passthrough mode"
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130 | default y
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131 | depends on FEATURE_CPIO_O
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132 | help
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133 | Passthrough mode. Rarely used.
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134 |
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135 | config DPKG
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136 | bool "dpkg"
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137 | default n
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138 | select FEATURE_SEAMLESS_GZ
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139 | help
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140 | dpkg is a medium-level tool to install, build, remove and manage
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141 | Debian packages.
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142 |
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143 | This implementation of dpkg has a number of limitations,
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144 | you should use the official dpkg if possible.
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145 |
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146 | config DPKG_DEB
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147 | bool "dpkg_deb"
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148 | default n
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149 | select FEATURE_SEAMLESS_GZ
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150 | help
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151 | dpkg-deb unpacks and provides information about Debian archives.
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152 |
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153 | This implementation of dpkg-deb cannot pack archives.
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154 |
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155 | Unless you have a specific application which requires dpkg-deb,
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156 | say N here.
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157 |
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158 | config FEATURE_DPKG_DEB_EXTRACT_ONLY
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159 | bool "Extract only (-x)"
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160 | default n
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161 | depends on DPKG_DEB
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162 | help
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163 | This reduces dpkg-deb to the equivalent of
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164 | "ar -p <deb> data.tar.gz | tar -zx". However it saves space as none
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165 | of the extra dpkg-deb, ar or tar options are needed, they are linked
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166 | to internally.
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167 |
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168 | config GUNZIP
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169 | bool "gunzip"
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170 | default y
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171 | help
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172 | gunzip is used to decompress archives created by gzip.
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173 | You can use the `-t' option to test the integrity of
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174 | an archive, without decompressing it.
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175 |
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176 | config GZIP
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177 | bool "gzip"
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178 | default y
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179 | help
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180 | gzip is used to compress files.
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181 | It's probably the most widely used UNIX compression program.
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182 |
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183 | config FEATURE_GZIP_LONG_OPTIONS
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184 | bool "Enable long options"
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185 | default y
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186 | depends on GZIP && LONG_OPTS
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187 | help
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188 | Enable use of long options, increases size by about 106 Bytes
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189 |
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190 | config LZOP
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191 | bool "lzop"
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192 | default y
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193 | help
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194 | Lzop compression/decompresion.
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195 |
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196 | config LZOP_COMPR_HIGH
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197 | bool "lzop compression levels 7,8,9 (not very useful)"
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198 | default n
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199 | depends on LZOP
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200 | help
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201 | High levels (7,8,9) of lzop compression. These levels
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202 | are actually slower than gzip at equivalent compression ratios
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203 | and take up 3.2K of code.
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204 |
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205 | config RPM2CPIO
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206 | bool "rpm2cpio"
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207 | default y
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208 | help
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209 | Converts a RPM file into a CPIO archive.
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210 |
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211 | config RPM
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212 | bool "rpm"
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213 | default y
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214 | help
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215 | Mini RPM applet - queries and extracts RPM packages.
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216 |
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217 | config TAR
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218 | bool "tar"
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219 | default y
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220 | help
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221 | tar is an archiving program. It's commonly used with gzip to
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222 | create compressed archives. It's probably the most widely used
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223 | UNIX archive program.
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224 |
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225 | config FEATURE_TAR_CREATE
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226 | bool "Enable archive creation"
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227 | default y
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228 | depends on TAR
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229 | help
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230 | If you enable this option you'll be able to create
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231 | tar archives using the `-c' option.
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232 |
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233 | config FEATURE_TAR_AUTODETECT
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234 | bool "Autodetect compressed tarballs"
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235 | default y
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236 | depends on TAR && (FEATURE_SEAMLESS_Z || FEATURE_SEAMLESS_GZ || FEATURE_SEAMLESS_BZ2 || FEATURE_SEAMLESS_LZMA || FEATURE_SEAMLESS_XZ)
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237 | help
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238 | With this option tar can automatically detect compressed
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239 | tarballs. Currently it works only on files (not pipes etc).
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240 |
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241 | config FEATURE_TAR_FROM
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242 | bool "Enable -X (exclude from) and -T (include from) options)"
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243 | default y
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244 | depends on TAR
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245 | help
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246 | If you enable this option you'll be able to specify
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247 | a list of files to include or exclude from an archive.
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248 |
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249 | config FEATURE_TAR_OLDGNU_COMPATIBILITY
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250 | bool "Support for old tar header format"
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251 | default y
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252 | depends on TAR || DPKG
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253 | help
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254 | This option is required to unpack archives created in
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255 | the old GNU format; help to kill this old format by
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256 | repacking your ancient archives with the new format.
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257 |
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258 | config FEATURE_TAR_OLDSUN_COMPATIBILITY
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259 | bool "Enable untarring of tarballs with checksums produced by buggy Sun tar"
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260 | default y
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261 | depends on TAR || DPKG
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262 | help
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263 | This option is required to unpack archives created by some old
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264 | version of Sun's tar (it was calculating checksum using signed
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265 | arithmetic). It is said to be fixed in newer Sun tar, but "old"
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266 | tarballs still exist.
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267 |
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268 | config FEATURE_TAR_GNU_EXTENSIONS
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269 | bool "Support for GNU tar extensions (long filenames)"
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270 | default y
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271 | depends on TAR || DPKG
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272 | help
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273 | With this option busybox supports GNU long filenames and
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274 | linknames.
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275 |
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276 | config FEATURE_TAR_LONG_OPTIONS
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277 | bool "Enable long options"
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278 | default y
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279 | depends on TAR && LONG_OPTS
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280 | help
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281 | Enable use of long options, increases size by about 400 Bytes
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282 |
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283 | config FEATURE_TAR_TO_COMMAND
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284 | bool "Support for writing to an external program"
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285 | default y
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286 | depends on TAR && FEATURE_TAR_LONG_OPTIONS
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287 | help
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288 | If you enable this option you'll be able to instruct tar to send
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289 | the contents of each extracted file to the standard input of an
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290 | external program.
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291 |
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292 | config FEATURE_TAR_UNAME_GNAME
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293 | bool "Enable use of user and group names"
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294 | default y
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295 | depends on TAR
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296 | help
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297 | Enables use of user and group names in tar. This affects contents
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298 | listings (-t) and preserving permissions when unpacking (-p).
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299 | +200 bytes.
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300 |
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301 | config FEATURE_TAR_NOPRESERVE_TIME
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302 | bool "Enable -m (do not preserve time) option"
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303 | default y
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304 | depends on TAR
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305 | help
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306 | With this option busybox supports GNU tar -m
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307 | (do not preserve time) option.
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308 |
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309 | config FEATURE_TAR_SELINUX
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310 | bool "Support for extracting SELinux labels"
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311 | default n
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312 | depends on TAR && SELINUX
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313 | help
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314 | With this option busybox supports restoring SELinux labels
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315 | when extracting files from tar archives.
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316 |
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317 | config UNCOMPRESS
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318 | bool "uncompress"
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319 | default n
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320 | help
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321 | uncompress is used to decompress archives created by compress.
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322 | Not much used anymore, replaced by gzip/gunzip.
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323 |
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324 | config UNLZMA
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325 | bool "unlzma"
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326 | default y
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327 | help
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328 | unlzma is a compression utility using the Lempel-Ziv-Markov chain
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329 | compression algorithm, and range coding. Compression
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330 | is generally considerably better than that achieved by the bzip2
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331 | compressors.
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332 |
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333 | The BusyBox unlzma applet is limited to de-compression only.
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334 | On an x86 system, this applet adds about 4K.
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335 |
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336 | Unless you have a specific application which requires unlzma, you
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337 | should probably say N here.
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338 |
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339 | config FEATURE_LZMA_FAST
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340 | bool "Optimize unlzma for speed"
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341 | default y
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342 | depends on UNLZMA
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343 | help
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344 | This option reduces decompression time by about 25% at the cost of
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345 | a 1K bigger binary.
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346 |
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347 | config LZMA
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348 | bool "Provide lzma alias which supports only unpacking"
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349 | default y
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350 | depends on UNLZMA
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351 | help
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352 | Enable this option if you want commands like "lzma -d" to work.
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353 | IOW: you'll get lzma applet, but it will always require -d option.
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354 |
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355 | config UNXZ
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356 | bool "unxz"
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357 | default y
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358 | help
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359 | unxz is a unlzma successor.
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360 |
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361 | config XZ
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362 | bool "Provide xz alias which supports only unpacking"
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363 | default y
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364 | depends on UNXZ
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365 | help
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366 | Enable this option if you want commands like "xz -d" to work.
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367 | IOW: you'll get xz applet, but it will always require -d option.
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368 |
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369 | config UNZIP
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370 | bool "unzip"
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371 | default y
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372 | help
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373 | unzip will list or extract files from a ZIP archive,
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374 | commonly found on DOS/WIN systems. The default behavior
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375 | (with no options) is to extract the archive into the
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376 | current directory. Use the `-d' option to extract to a
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377 | directory of your choice.
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378 |
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379 | endmenu
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