1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
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2 "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
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3 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
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5 <meta http-equiv="Content-Type" content="application/xhtml+xml; charset=UTF-8" />
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6 <meta name="generator" content="AsciiDoc 8.6.9" />
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7 <title>ccache news</title>
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8 <style type="text/css">
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9 /* Shared CSS for AsciiDoc xhtml11 and html5 backends */
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13 font-family: Georgia,serif;
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17 h1, h2, h3, h4, h5, h6,
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18 div.title, caption.title,
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19 thead, p.table.header,
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21 #author, #revnumber, #revdate, #revremark,
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23 font-family: Arial,Helvetica,sans-serif;
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27 margin: 1em 5% 1em 5%;
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32 text-decoration: underline;
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48 h1, h2, h3, h4, h5, h6 {
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51 margin-bottom: 0.5em;
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56 border-bottom: 2px solid silver;
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76 border: 1px solid silver;
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81 margin-bottom: 0.5em;
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87 ul > li { color: #aaa; }
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88 ul > li > * { color: black; }
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90 .monospaced, code, pre {
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91 font-family: "Courier New", Courier, monospace;
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98 white-space: pre-wrap;
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108 #revnumber, #revdate, #revremark {
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113 border-top: 2px solid silver;
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114 padding-top: 0.5em;
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119 padding-bottom: 0.5em;
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123 padding-bottom: 0.5em;
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128 margin-bottom: 1.5em;
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130 div.imageblock, div.exampleblock, div.verseblock,
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131 div.quoteblock, div.literalblock, div.listingblock, div.sidebarblock,
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132 div.admonitionblock {
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134 margin-bottom: 1.5em;
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136 div.admonitionblock {
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138 margin-bottom: 2.0em;
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143 div.content { /* Block element content. */
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147 /* Block element titles. */
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148 div.title, caption.title {
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153 margin-bottom: 0.5em;
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159 td div.title:first-child {
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162 div.content div.title:first-child {
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165 div.content + div.title {
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169 div.sidebarblock > div.content {
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170 background: #ffffee;
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171 border: 1px solid #dddddd;
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172 border-left: 4px solid #f0f0f0;
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176 div.listingblock > div.content {
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177 border: 1px solid #dddddd;
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178 border-left: 5px solid #f0f0f0;
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179 background: #f8f8f8;
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183 div.quoteblock, div.verseblock {
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184 padding-left: 1.0em;
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185 margin-left: 1.0em;
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187 border-left: 5px solid #f0f0f0;
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191 div.quoteblock > div.attribution {
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192 padding-top: 0.5em;
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196 div.verseblock > pre.content {
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197 font-family: inherit;
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198 font-size: inherit;
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200 div.verseblock > div.attribution {
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201 padding-top: 0.75em;
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204 /* DEPRECATED: Pre version 8.2.7 verse style literal block. */
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205 div.verseblock + div.attribution {
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209 div.admonitionblock .icon {
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210 vertical-align: top;
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213 text-decoration: underline;
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215 padding-right: 0.5em;
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217 div.admonitionblock td.content {
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218 padding-left: 0.5em;
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219 border-left: 3px solid #dddddd;
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222 div.exampleblock > div.content {
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223 border-left: 3px solid #dddddd;
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224 padding-left: 0.5em;
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227 div.imageblock div.content { padding-left: 0; }
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228 span.image img { border-style: none; vertical-align: text-bottom; }
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229 a.image:visited { color: white; }
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233 margin-bottom: 0.8em;
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238 font-style: normal;
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241 dd > *:first-child {
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246 list-style-position: outside;
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249 list-style-type: decimal;
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252 list-style-type: lower-alpha;
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255 list-style-type: upper-alpha;
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258 list-style-type: lower-roman;
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261 list-style-type: upper-roman;
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264 div.compact ul, div.compact ol,
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265 div.compact p, div.compact p,
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266 div.compact div, div.compact div {
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268 margin-bottom: 0.1em;
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280 margin-bottom: 0.8em;
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283 padding-bottom: 15px;
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285 dt.hdlist1.strong, td.hdlist1.strong {
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289 vertical-align: top;
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290 font-style: normal;
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291 padding-right: 0.8em;
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295 vertical-align: top;
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297 div.hdlist.compact tr {
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303 background: yellow;
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306 .footnote, .footnoteref {
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310 span.footnote, span.footnoteref {
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311 vertical-align: super;
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315 margin: 20px 0 20px 0;
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316 padding: 7px 0 0 0;
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319 #footnotes div.footnote {
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325 border-top: 1px solid silver;
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334 padding-right: 0.5em;
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335 padding-bottom: 0.3em;
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336 vertical-align: top;
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338 div.colist td img {
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343 #footer-badges { display: none; }
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347 margin-bottom: 2.5em;
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355 margin-bottom: 0.1em;
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358 div.toclevel0, div.toclevel1, div.toclevel2, div.toclevel3, div.toclevel4 {
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375 span.aqua { color: aqua; }
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376 span.black { color: black; }
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377 span.blue { color: blue; }
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378 span.fuchsia { color: fuchsia; }
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379 span.gray { color: gray; }
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380 span.green { color: green; }
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381 span.lime { color: lime; }
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382 span.maroon { color: maroon; }
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383 span.navy { color: navy; }
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384 span.olive { color: olive; }
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385 span.purple { color: purple; }
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386 span.red { color: red; }
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387 span.silver { color: silver; }
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388 span.teal { color: teal; }
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389 span.white { color: white; }
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390 span.yellow { color: yellow; }
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392 span.aqua-background { background: aqua; }
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393 span.black-background { background: black; }
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394 span.blue-background { background: blue; }
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395 span.fuchsia-background { background: fuchsia; }
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396 span.gray-background { background: gray; }
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397 span.green-background { background: green; }
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398 span.lime-background { background: lime; }
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399 span.maroon-background { background: maroon; }
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400 span.navy-background { background: navy; }
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401 span.olive-background { background: olive; }
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402 span.purple-background { background: purple; }
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403 span.red-background { background: red; }
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404 span.silver-background { background: silver; }
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405 span.teal-background { background: teal; }
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406 span.white-background { background: white; }
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407 span.yellow-background { background: yellow; }
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409 span.big { font-size: 2em; }
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410 span.small { font-size: 0.6em; }
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412 span.underline { text-decoration: underline; }
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413 span.overline { text-decoration: overline; }
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414 span.line-through { text-decoration: line-through; }
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416 div.unbreakable { page-break-inside: avoid; }
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426 margin-bottom: 1.5em;
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428 div.tableblock > table {
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429 border: 3px solid #527bbd;
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431 thead, p.table.header {
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438 /* Because the table frame attribute is overriden by CSS in most browsers. */
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439 div.tableblock > table[frame="void"] {
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440 border-style: none;
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442 div.tableblock > table[frame="hsides"] {
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443 border-left-style: none;
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444 border-right-style: none;
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446 div.tableblock > table[frame="vsides"] {
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447 border-top-style: none;
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448 border-bottom-style: none;
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459 margin-bottom: 1.5em;
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461 thead, p.tableblock.header {
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470 border-spacing: 0px;
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471 border-style: solid;
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472 border-color: #527bbd;
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473 border-collapse: collapse;
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475 th.tableblock, td.tableblock {
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478 border-style: solid;
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479 border-color: #527bbd;
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482 table.tableblock.frame-topbot {
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483 border-left-style: hidden;
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484 border-right-style: hidden;
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486 table.tableblock.frame-sides {
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487 border-top-style: hidden;
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488 border-bottom-style: hidden;
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490 table.tableblock.frame-none {
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491 border-style: hidden;
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494 th.tableblock.halign-left, td.tableblock.halign-left {
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497 th.tableblock.halign-center, td.tableblock.halign-center {
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498 text-align: center;
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500 th.tableblock.halign-right, td.tableblock.halign-right {
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504 th.tableblock.valign-top, td.tableblock.valign-top {
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505 vertical-align: top;
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507 th.tableblock.valign-middle, td.tableblock.valign-middle {
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508 vertical-align: middle;
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510 th.tableblock.valign-bottom, td.tableblock.valign-bottom {
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511 vertical-align: bottom;
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521 padding-top: 0.5em;
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522 padding-bottom: 0.5em;
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523 border-top: 2px solid silver;
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524 border-bottom: 2px solid silver;
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527 border-style: none;
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529 body.manpage div.sectionbody {
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534 body.manpage div#toc { display: none; }
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539 <script type="text/javascript">
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541 var asciidoc = { // Namespace.
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543 /////////////////////////////////////////////////////////////////////
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544 // Table Of Contents generator
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545 /////////////////////////////////////////////////////////////////////
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547 /* Author: Mihai Bazon, September 2002
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548 * http://students.infoiasi.ro/~mishoo
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550 * Table Of Content generator
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553 * Feel free to use this script under the terms of the GNU General Public
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554 * License, as long as you do not remove or alter this notice.
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557 /* modified by Troy D. Hanson, September 2006. License: GPL */
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558 /* modified by Stuart Rackham, 2006, 2009. License: GPL */
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560 // toclevels = 1..4.
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561 toc: function (toclevels) {
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563 function getText(el) {
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565 for (var i = el.firstChild; i != null; i = i.nextSibling) {
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566 if (i.nodeType == 3 /* Node.TEXT_NODE */) // IE doesn't speak constants.
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568 else if (i.firstChild != null)
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569 text += getText(i);
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574 function TocEntry(el, text, toclevel) {
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577 this.toclevel = toclevel;
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580 function tocEntries(el, toclevels) {
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581 var result = new Array;
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582 var re = new RegExp('[hH]([1-'+(toclevels+1)+'])');
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583 // Function that scans the DOM tree for header elements (the DOM2
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584 // nodeIterator API would be a better technique but not supported by all
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586 var iterate = function (el) {
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587 for (var i = el.firstChild; i != null; i = i.nextSibling) {
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588 if (i.nodeType == 1 /* Node.ELEMENT_NODE */) {
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589 var mo = re.exec(i.tagName);
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590 if (mo && (i.getAttribute("class") || i.getAttribute("className")) != "float") {
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591 result[result.length] = new TocEntry(i, getText(i), mo[1]-1);
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601 var toc = document.getElementById("toc");
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606 // Delete existing TOC entries in case we're reloading the TOC.
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607 var tocEntriesToRemove = [];
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609 for (i = 0; i < toc.childNodes.length; i++) {
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610 var entry = toc.childNodes[i];
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611 if (entry.nodeName.toLowerCase() == 'div'
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612 && entry.getAttribute("class")
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613 && entry.getAttribute("class").match(/^toclevel/))
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614 tocEntriesToRemove.push(entry);
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616 for (i = 0; i < tocEntriesToRemove.length; i++) {
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617 toc.removeChild(tocEntriesToRemove[i]);
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620 // Rebuild TOC entries.
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621 var entries = tocEntries(document.getElementById("content"), toclevels);
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622 for (var i = 0; i < entries.length; ++i) {
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623 var entry = entries[i];
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624 if (entry.element.id == "")
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625 entry.element.id = "_toc_" + i;
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626 var a = document.createElement("a");
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627 a.href = "#" + entry.element.id;
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628 a.appendChild(document.createTextNode(entry.text));
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629 var div = document.createElement("div");
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630 div.appendChild(a);
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631 div.className = "toclevel" + entry.toclevel;
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632 toc.appendChild(div);
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634 if (entries.length == 0)
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635 toc.parentNode.removeChild(toc);
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639 /////////////////////////////////////////////////////////////////////
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640 // Footnotes generator
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641 /////////////////////////////////////////////////////////////////////
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643 /* Based on footnote generation code from:
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644 * http://www.brandspankingnew.net/archive/2005/07/format_footnote.html
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647 footnotes: function () {
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648 // Delete existing footnote entries in case we're reloading the footnodes.
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650 var noteholder = document.getElementById("footnotes");
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654 var entriesToRemove = [];
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655 for (i = 0; i < noteholder.childNodes.length; i++) {
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656 var entry = noteholder.childNodes[i];
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657 if (entry.nodeName.toLowerCase() == 'div' && entry.getAttribute("class") == "footnote")
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658 entriesToRemove.push(entry);
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660 for (i = 0; i < entriesToRemove.length; i++) {
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661 noteholder.removeChild(entriesToRemove[i]);
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664 // Rebuild footnote entries.
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665 var cont = document.getElementById("content");
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666 var spans = cont.getElementsByTagName("span");
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669 for (i=0; i<spans.length; i++) {
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670 if (spans[i].className == "footnote") {
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672 var note = spans[i].getAttribute("data-note");
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674 // Use [\s\S] in place of . so multi-line matches work.
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675 // Because JavaScript has no s (dotall) regex flag.
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676 note = spans[i].innerHTML.match(/\s*\[([\s\S]*)]\s*/)[1];
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677 spans[i].innerHTML =
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678 "[<a id='_footnoteref_" + n + "' href='#_footnote_" + n +
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679 "' title='View footnote' class='footnote'>" + n + "</a>]";
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680 spans[i].setAttribute("data-note", note);
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682 noteholder.innerHTML +=
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683 "<div class='footnote' id='_footnote_" + n + "'>" +
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684 "<a href='#_footnoteref_" + n + "' title='Return to text'>" +
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685 n + "</a>. " + note + "</div>";
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686 var id =spans[i].getAttribute("id");
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687 if (id != null) refs["#"+id] = n;
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691 noteholder.parentNode.removeChild(noteholder);
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693 // Process footnoterefs.
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694 for (i=0; i<spans.length; i++) {
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695 if (spans[i].className == "footnoteref") {
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696 var href = spans[i].getElementsByTagName("a")[0].getAttribute("href");
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697 href = href.match(/#.*/)[0]; // Because IE return full URL.
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699 spans[i].innerHTML =
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700 "[<a href='#_footnote_" + n +
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701 "' title='View footnote' class='footnote'>" + n + "</a>]";
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707 install: function(toclevels) {
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710 function reinstall() {
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711 asciidoc.footnotes();
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713 asciidoc.toc(toclevels);
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717 function reinstallAndRemoveTimer() {
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718 clearInterval(timerId);
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722 timerId = setInterval(reinstall, 500);
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723 if (document.addEventListener)
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724 document.addEventListener("DOMContentLoaded", reinstallAndRemoveTimer, false);
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726 window.onload = reinstallAndRemoveTimer;
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730 asciidoc.install(2);
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734 <body class="article">
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736 <h1>ccache news</h1>
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737 <span id="revnumber">version 3.2.3</span>
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739 <div id="toctitle">Table of Contents</div>
740 <noscript><p><b>JavaScript must be enabled in your browser to display the table of contents.</b></p></noscript>
744 <div class="sect1">
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745 <h2 id="_ccache_3_2_3">ccache 3.2.3</h2>
\r
746 <div class="sectionbody">
\r
747 <div class="paragraph"><p>Release date: 2015-08-16</p></div>
\r
748 <div class="sect2">
\r
749 <h3 id="_new_features_and_improvements">New features and improvements</h3>
\r
750 <div class="ulist"><ul>
\r
753 Added support for compiler option <code>-gsplit-dwarf</code>.
\r
758 <div class="sect2">
\r
759 <h3 id="_bug_fixes">Bug fixes</h3>
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760 <div class="ulist"><ul>
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763 Support external zlib in nonstandard directory.
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768 Avoid calling <code>exit()</code> inside an exit handler.
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773 Let exit handler terminate properly.
\r
778 Bail out on compiler option <code>--save-temps</code> in addition to <code>-save-temps</code>.
\r
783 Only log "Disabling direct mode" once when failing to read potential include
\r
791 <div class="sect1">
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792 <h2 id="_ccache_3_2_2">ccache 3.2.2</h2>
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793 <div class="sectionbody">
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794 <div class="paragraph"><p>Release date: 2015-05-10</p></div>
\r
795 <div class="sect2">
\r
796 <h3 id="_new_features_and_improvements_2">New features and improvements</h3>
\r
797 <div class="ulist"><ul>
\r
800 Added support for <code>CCACHE_COMPILERCHECK=string:<value></code>. This is a faster
\r
801 alternative to <code>CCACHE_COMPILERCHECK=<command></code> if the command’s output can
\r
802 be precalculated by the build system.
\r
807 Add support for caching code coverage results (compiling for gcov).
\r
812 <div class="sect2">
\r
813 <h3 id="_bug_fixes_2">Bug fixes</h3>
\r
814 <div class="ulist"><ul>
\r
817 Made hash of cached result created with and without <code>CCACHE_CPP2</code> different.
\r
818 This makes it possible to rebuild with <code>CCACHE_CPP2</code> set without having to
\r
819 clear the cache to get new results.
\r
824 Don’t try to reset a non-existing stats file. This avoids “No such file or
\r
825 directory” messages in the ccache log when the cache directory doesn’t
\r
831 Fixed a bug where ccache deleted clang diagnostics after compiler failures.
\r
836 Avoid performing an unnecessary copy of the object file on a cache miss.
\r
841 Bail out on too hard compiler option <code>-fmodules</code>.
\r
846 Bail out on too hard compiler option <code>-fplugin=libcc1plugin</code> (interaction
\r
852 Fixed build error when compiling ccache with recent clang versions.
\r
857 Removed signal-unsafe code from signal handler.
\r
862 Corrected logic for when to output cached stderr.
\r
867 Wipe the whole cached result on failure retrieving a cached file.
\r
872 Fixed build error when compiling ccache with recent clang versions.
\r
879 <div class="sect1">
\r
880 <h2 id="_ccache_3_2_1">ccache 3.2.1</h2>
\r
881 <div class="sectionbody">
\r
882 <div class="paragraph"><p>Release date: 2014-12-10</p></div>
\r
883 <div class="sect2">
\r
884 <h3 id="_bug_fixes_3">Bug fixes</h3>
\r
885 <div class="ulist"><ul>
\r
888 Fixed regression in temporary file handling, which lead to incorrect
\r
889 permissions for stats, manifest and ccache.conf files in the cache.
\r
894 <code>CACHEDIR.TAG</code> files are now created in the [0-9a-f] subdirectories so that
\r
895 ccache.conf is not lost in backups.
\r
900 Made the default cache size suffix <code>G</code>, as previously documented.
\r
905 <code>-fdiagnostics-color=auto</code> is now passed to the compiler even if stderr is
\r
906 redirected. This fixes a problem when, for instance, a configure test probes
\r
907 if the compiler (wrapped via ccache) supports <code>-fdiagnostics-color=auto</code>.
\r
912 Added missing documentation for <code>max_files</code> and <code>max_size</code> configuration
\r
920 <div class="sect1">
\r
921 <h2 id="_ccache_3_2">ccache 3.2</h2>
\r
922 <div class="sectionbody">
\r
923 <div class="paragraph"><p>Release date: 2014-11-17</p></div>
\r
924 <div class="sect2">
\r
925 <h3 id="_new_features_and_improvements_3">New features and improvements</h3>
\r
926 <div class="ulist"><ul>
\r
929 Added support for configuring ccache via one or several configuration files
\r
930 instead of via environment variables. Environment variables still have
\r
931 priority but are no longer the recommended way of customizing ccache
\r
932 behavior. See the manual for more information.
\r
937 Added support for compiler error/warning messages with color.
\r
942 Made creation of temporary directories and cache directories smarter to avoid
\r
943 unnecessary <code>stat</code> calls.
\r
948 Improved efficiency of the algorithm that scans for <code>__DATE_</code> and <code>__TIME__</code>
\r
949 tokens in the hashed source code.
\r
954 Added support for several binaries (separated by space) in <code>CCACHE_PREFIX</code>.
\r
959 The <code>-c</code> option is no longer passed to the preprocessor. This fixes problems
\r
960 with clang and Solaris’s C++ compiler.
\r
965 ccache no longer passes preprocessor options like <code>-D</code> and <code>-I</code> to the
\r
966 compiler when compiling preprocessed output. This fixes warnings emitted by
\r
972 Compiler options <code>-fprofile-generate</code>, <code>-fprofile-arcs</code>, <code>-fprofile-use</code> and
\r
973 <code>-fbranch-probabilities</code> are now handled without bailing.
\r
978 Added support for clang’s <code>--serialize-diagnostic</code> option, storing the
\r
979 diagnostic file (<code>.dia</code>) in the cache.
\r
984 Added support for precompiled headers when using clang.
\r
989 Added support for clang <code>.pth</code> (pretokenized header) files.
\r
994 Changed the <code>-x</code> language option to use the new objective C standard for GCC
\r
1000 On a cache miss, ccache now instructs the compiler to create the object file
\r
1001 at the real destination and then copies the file into the cache instead of
\r
1002 the other way around. This is needed to support compiler options like
\r
1003 <code>-fprofile-arcs</code> and <code>--serialize-diagnostics</code>.
\r
1008 ccache now checks that included files' ctimes aren’t too new. This check can
\r
1009 be turned off by adding <code>include_file_ctime</code> to the “ccache sloppiness”
\r
1015 Added possibility to get cache hits based on filename, size, mtime and ctime
\r
1016 only. On other words, source code files are not even read, only stat-ed. This
\r
1017 operation mode is opt-in by adding <code>file_stat_matches</code> to the “ccache
\r
1018 sloppiness” setting.
\r
1023 The filename part of options like <code>-Wp,-MDfilename</code> is no longer included in
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1024 the hash since the filename doesn’t have any bearing on the result.
\r
1029 Added a “read-only direct” configuration setting, which is like the
\r
1030 ordinary read-only setting except that ccache will only try to retrieve
\r
1031 results from the cache using the direct mode, not the preprocessor mode.
\r
1036 The display and interpretation of cache size has been changed to use SI
\r
1042 Default cache size is now 5 GB (was previously 1 GiB).
\r
1047 Added configuration option to set the compression level of compressed object
\r
1048 files in the cache.
\r
1053 Added support for <code>@file</code> and <code>-@file</code> arguments (reading options from a
\r
1059 <code>-Wl,</code> options are no longer included in the hash since they don’t affect
\r
1065 Bail out on too hard compiler option <code>-Wp,-P</code>.
\r
1070 Optimized MD4 calculation code on little-endian systems.
\r
1075 Various improvements and fixes on win32.
\r
1080 Improved logging to the ccache log file.
\r
1085 Added <code>--dump-manifest</code> command-line option for debugging purposes.
\r
1090 Added <code>--with-bundled-zlib</code> configure option.
\r
1095 Upgraded bundled zlib to version 1.2.8.
\r
1100 Improved <code>dev.mk</code> to be more platform independent.
\r
1105 Made the test suite work with clang and gcc-llvm on OS X.
\r
1110 Various other improvements of the test suite.
\r
1115 <div class="sect2">
\r
1116 <h3 id="_bug_fixes_4">Bug fixes</h3>
\r
1117 <div class="ulist"><ul>
\r
1120 Any previous <code>.stderr</code> is now removed from the cache when recaching.
\r
1125 Fixed an issue when handling the <code>-arch</code> compiler option with an argument.
\r
1130 Fixed race condition when creating the initial cache directory.
\r
1135 Fixed test suite failures when <code>CC</code> is a ccache-wrapped compiler.
\r
1142 <div class="sect1">
\r
1143 <h2 id="_ccache_3_1_11">ccache 3.1.11</h2>
\r
1144 <div class="sectionbody">
\r
1145 <div class="paragraph"><p>Release date: 2015-03-07</p></div>
\r
1146 <div class="sect2">
\r
1147 <h3 id="_bug_fixes_5">Bug fixes</h3>
\r
1148 <div class="ulist"><ul>
\r
1151 Fixed bug which could result in false cache hits when source code contains
\r
1152 <code>'"'</code> followed by <code>" /*"</code> or <code>" //"</code> (with variations).
\r
1157 Made hash of cached result created with and without <code>CCACHE_CPP2</code> different.
\r
1158 This makes it possible to rebuild with <code>CCACHE_CPP2</code> set without having to
\r
1159 clear the cache to get new results.
\r
1164 Don’t try to reset a non-existing stats file. This avoids “No such file or
\r
1165 directory” messages in the ccache log when the cache directory doesn’t
\r
1173 <div class="sect1">
\r
1174 <h2 id="_ccache_3_1_10">ccache 3.1.10</h2>
\r
1175 <div class="sectionbody">
\r
1176 <div class="paragraph"><p>Release date: 2014-10-19</p></div>
\r
1177 <div class="sect2">
\r
1178 <h3 id="_new_features_and_improvements_4">New features and improvements</h3>
\r
1179 <div class="ulist"><ul>
\r
1182 Added support for the <code>-Xclang</code> compiler option.
\r
1187 Improved handling of exit code of internally executed processes.
\r
1192 Zero length object files in the cache are now rejected as invalid.
\r
1197 Bail out on option <code>-gsplit-dwarf</code> (since it produces multiple output files).
\r
1202 Compiler option <code>-fdebug-prefix-map</code> is now ignored (not part of the hash).
\r
1203 (The <code>-fdebug-prefix-map</code> option may be used in combination with
\r
1204 <code>CCACHE_BASEDIR</code> to reuse results across different directories.)
\r
1209 Added note in documentation that <code>--ccache-skip</code> currently does not mean
\r
1210 “don’t hash the following option”.
\r
1215 To enable support for precompiled headers (PCH), <code>CCACHE_SLOPPINESS</code> now also
\r
1216 needs to include the new <code>pch_defines</code> sloppiness. This is because ccache
\r
1217 can’t detect changes in the source code when only defined macros have been
\r
1223 Stale files in the internal temporary directory (<code><ccache_dir>/tmp</code>) are now
\r
1224 cleaned up if they are older than one hour.
\r
1229 <div class="sect2">
\r
1230 <h3 id="_bug_fixes_6">Bug fixes</h3>
\r
1231 <div class="ulist"><ul>
\r
1234 Fixed path canonicalization in <code>make_relative_path()</code> when path doesn’t
\r
1240 Fixed bug in <code>common_dir_prefix_length()</code>. This corrects the <code>CCACHE_BASEDIR</code>
\r
1246 ccache no longer tries to create the cache directory when <code>CCACHE_DISABLE</code> is
\r
1252 Fixed bug when reading manifests with a very large number of file info
\r
1258 Fixed problem with logging of current working directory.
\r
1265 <div class="sect1">
\r
1266 <h2 id="_ccache_3_1_9">ccache 3.1.9</h2>
\r
1267 <div class="sectionbody">
\r
1268 <div class="paragraph"><p>Release date: 2013-01-06</p></div>
\r
1269 <div class="sect2">
\r
1270 <h3 id="_bug_fixes_7">Bug fixes</h3>
\r
1271 <div class="ulist"><ul>
\r
1274 The EAGAIN signal is now handled correctly when emitting cached stderr
\r
1275 output. This fixes a problem triggered by large error outputs from the
\r
1281 Subdirectories in the cache are no longer created in read-only mode.
\r
1286 Fixed so that ccache’s log file descriptor is not made available to the
\r
1292 Improved error reporting when failing to create temporary stdout/stderr files
\r
1293 when executing the compiler.
\r
1298 Disappearing temporary stdout/stderr files are now handled gracefully.
\r
1303 <div class="sect2">
\r
1304 <h3 id="_other">Other</h3>
\r
1305 <div class="ulist"><ul>
\r
1308 Fixed test suite to work on ecryptfs.
\r
1315 <div class="sect1">
\r
1316 <h2 id="_ccache_3_1_8">ccache 3.1.8</h2>
\r
1317 <div class="sectionbody">
\r
1318 <div class="paragraph"><p>Release date: 2012-08-11</p></div>
\r
1319 <div class="sect2">
\r
1320 <h3 id="_new_features_and_improvements_5">New features and improvements</h3>
\r
1321 <div class="ulist"><ul>
\r
1324 Made paths to dependency files relative in order to increase cache hits.
\r
1329 Added work-around to make ccache work with buggy GCC 4.1 when creating a
\r
1330 pre-compiled header.
\r
1335 Clang plugins are now hashed to catch plugin upgrades.
\r
1340 <div class="sect2">
\r
1341 <h3 id="_bug_fixes_8">Bug fixes</h3>
\r
1342 <div class="ulist"><ul>
\r
1345 Fixed crash when the current working directory has been removed.
\r
1350 Fixed crash when stderr is closed.
\r
1355 Corrected a corner case when parsing backslash escapes in string
\r
1361 Paths are now correctly canonicalized when computing paths relative to the
\r
1367 <div class="sect2">
\r
1368 <h3 id="_other_2">Other</h3>
\r
1369 <div class="ulist"><ul>
\r
1372 Made git version macro work when compiling outside of the source directory.
\r
1377 Fixed <code>static_assert</code> macro definition clash with GCC 4.7.
\r
1384 <div class="sect1">
\r
1385 <h2 id="_ccache_3_1_7">ccache 3.1.7</h2>
\r
1386 <div class="sectionbody">
\r
1387 <div class="paragraph"><p>Release date: 2012-01-08</p></div>
\r
1388 <div class="sect2">
\r
1389 <h3 id="_bug_fixes_9">Bug fixes</h3>
\r
1390 <div class="ulist"><ul>
\r
1393 Non-writable <code>CCACHE_DIR</code> is now handled gracefully when <code>CCACHE_READONLY</code> is
\r
1399 Made failure to create files (typically due to bad directory permissions) in
\r
1400 the cache directory fatal. Previously, such failures were silently and
\r
1401 erroneously flagged as "compiler produced stdout".
\r
1406 Both the <code>-specs=file</code> and <code>--specs=file</code> forms are now recognized.
\r
1411 Added recognition and hashing of GCC plugins specified with <code>-fplugin=file</code>.
\r
1416 <code>CCACHE_COMPILERCHECK</code> now also determines how to hash explicit specs files
\r
1417 (<code>-specs=file</code>).
\r
1422 Added <code>CPATH</code>, <code>C_INCLUDE_PATH</code> and similar environment variables to the hash
\r
1423 to avoid false cache hits when such variables have changed.
\r
1428 Corrected log message when unify mode is enabled.
\r
1433 Reverted the GCC bug compatibility introduced in ccache 3.1.5 for <code>-MT</code>/<code>-MQ</code>
\r
1434 options with concatenated arguments. (The bug is fixed in recent GCC
\r
1440 <div class="sect2">
\r
1441 <h3 id="_other_3">Other</h3>
\r
1442 <div class="ulist"><ul>
\r
1445 Corrected license header for <code>mdfour.c</code>.
\r
1450 Improved documentation on how to fix bad object files in the cache.
\r
1457 <div class="sect1">
\r
1458 <h2 id="_ccache_3_1_6">ccache 3.1.6</h2>
\r
1459 <div class="sectionbody">
\r
1460 <div class="paragraph"><p>Release date: 2011-08-21</p></div>
\r
1461 <div class="sect2">
\r
1462 <h3 id="_new_features_and_improvements_6">New features and improvements</h3>
\r
1463 <div class="ulist"><ul>
\r
1466 Rewrite argument to <code>--sysroot</code> if <code>CCACHE_BASEDIR</code> is used.
\r
1471 <div class="sect2">
\r
1472 <h3 id="_bug_fixes_10">Bug fixes</h3>
\r
1473 <div class="ulist"><ul>
\r
1476 Don’t crash if <code>getcwd()</code> fails.
\r
1481 Fixed alignment of “called for preprocessing” counter.
\r
1488 <div class="sect1">
\r
1489 <h2 id="_ccache_3_1_5">ccache 3.1.5</h2>
\r
1490 <div class="sectionbody">
\r
1491 <div class="paragraph"><p>Release date: 2011-05-29</p></div>
\r
1492 <div class="sect2">
\r
1493 <h3 id="_new_features_and_improvements_7">New features and improvements</h3>
\r
1494 <div class="ulist"><ul>
\r
1497 Added a new statistics counter named “called for preprocessing”.
\r
1502 The original command line is now logged to the file specified with
\r
1503 <code>CCACHE_LOGFILE</code>.
\r
1508 Improved error logging when system calls fail.
\r
1513 Added support for rewriting absolute paths in <code>-F</code>/<code>-iframework</code> GCC
\r
1519 Improved order of statistics counters in <code>ccache -s</code> output.
\r
1524 <div class="sect2">
\r
1525 <h3 id="_bug_fixes_11">Bug fixes</h3>
\r
1526 <div class="ulist"><ul>
\r
1529 The <code>-MF</code>/<code>-MT</code>/<code>-MQ</code> options with concatenated argument are now handled
\r
1530 correctly when they are last on the command line.
\r
1535 ccache is now bug compatible with GCC for the <code>-MT</code>/<code>-MQ</code> options with
\r
1536 concatenated arguments.
\r
1541 Fixed a minor memory leak.
\r
1546 Systems that lack (and don’t need to be linked with) libm are now supported.
\r
1553 <div class="sect1">
\r
1554 <h2 id="_ccache_3_1_4">ccache 3.1.4</h2>
\r
1555 <div class="sectionbody">
\r
1556 <div class="paragraph"><p>Release date: 2011-01-09</p></div>
\r
1557 <div class="sect2">
\r
1558 <h3 id="_bug_fixes_12">Bug fixes</h3>
\r
1559 <div class="ulist"><ul>
\r
1562 Made a work-around for a bug in <code>gzputc()</code> in zlib 1.2.5.
\r
1567 Corrupt manifest files are now removed so that they won’t block direct mode
\r
1573 ccache now copes with file systems that don’t know about symbolic links.
\r
1578 The file handle in now correctly closed on write error when trying to create
\r
1586 <div class="sect1">
\r
1587 <h2 id="_ccache_3_1_3">ccache 3.1.3</h2>
\r
1588 <div class="sectionbody">
\r
1589 <div class="paragraph"><p>Release date: 2010-11-28</p></div>
\r
1590 <div class="sect2">
\r
1591 <h3 id="_bug_fixes_13">Bug fixes</h3>
\r
1592 <div class="ulist"><ul>
\r
1595 The -MFarg, -MTarg and -MQarg compiler options (i.e, without space between
\r
1596 option and argument) are now handled correctly.
\r
1601 <div class="sect2">
\r
1602 <h3 id="_other_4">Other</h3>
\r
1603 <div class="ulist"><ul>
\r
1606 Portability fixes for HP-UX 11.00 and other esoteric systems.
\r
1613 <div class="sect1">
\r
1614 <h2 id="_ccache_3_1_2">ccache 3.1.2</h2>
\r
1615 <div class="sectionbody">
\r
1616 <div class="paragraph"><p>Release date: 2010-11-21</p></div>
\r
1617 <div class="sect2">
\r
1618 <h3 id="_bug_fixes_14">Bug fixes</h3>
\r
1619 <div class="ulist"><ul>
\r
1622 Bail out on too hard compiler options <code>-fdump-*</code>.
\r
1627 NULL return values from malloc/calloc of zero bytes are now handled
\r
1633 Fixed issue when parsing precompiler output on AIX.
\r
1638 <div class="sect2">
\r
1639 <h3 id="_other_5">Other</h3>
\r
1640 <div class="ulist"><ul>
\r
1643 Improved documentation on which information is included in the hash sum.
\r
1648 Made the “too new header file” test case work on file systems with
\r
1649 unsynchronized clocks.
\r
1654 The test suite now also works on systems that lack a /dev/zero.
\r
1661 <div class="sect1">
\r
1662 <h2 id="_ccache_3_1_1">ccache 3.1.1</h2>
\r
1663 <div class="sectionbody">
\r
1664 <div class="paragraph"><p>Release date: 2010-11-07</p></div>
\r
1665 <div class="sect2">
\r
1666 <h3 id="_bug_fixes_15">Bug fixes</h3>
\r
1667 <div class="ulist"><ul>
\r
1670 ccache now falls back to preprocessor mode when a non-regular include file
\r
1671 (device, socket, etc) has been detected so that potential hanging due to
\r
1672 blocking reads is avoided.
\r
1677 CRC errors are now detected when decompressing compressed files in the cache.
\r
1682 Fixed potential object file corruption race on NFS.
\r
1687 Minor documentation corrections.
\r
1692 Fixed configure detection of ar.
\r
1697 ccache development version (set by dev.mk) now works with gits whose
\r
1698 <code>describe</code> command doesn’t understand <code>--dirty</code>.
\r
1703 <div class="sect2">
\r
1704 <h3 id="_other_6">Other</h3>
\r
1705 <div class="ulist"><ul>
\r
1708 Minor debug log message improvements.
\r
1715 <div class="sect1">
\r
1716 <h2 id="_ccache_3_1">ccache 3.1</h2>
\r
1717 <div class="sectionbody">
\r
1718 <div class="paragraph"><p>Release date: 2010-09-16</p></div>
\r
1719 <div class="sect2">
\r
1720 <h3 id="_new_features_and_improvements_8">New features and improvements</h3>
\r
1721 <div class="ulist"><ul>
\r
1724 Added support for hashing the output of a custom command (e.g. <code>%compiler%
\r
1725 --version</code>) to identify the compiler instead of stat-ing or hashing the
\r
1726 compiler binary. This can improve robustness when the compiler (as seen by
\r
1727 ccache) actually isn’t the real compiler but another compiler wrapper.
\r
1732 Added support for caching compilations that use precompiled headers. (See the
\r
1733 manual for important instructions regarding this.)
\r
1738 Locking of the files containing statistics counters is now done using
\r
1739 symlinks instead of POSIX locks. This should make ccache behave a lot better
\r
1740 on file systems where POSIX locks are slow or broken (e.g. NFS on some
\r
1746 Manifest files are now updated without the need of taking locks.
\r
1751 Updates of statistics counters are now always done in one of the sub-level
\r
1752 statistics files. This reduces lock contention, which especially improves
\r
1753 performance on slow NFS mounts.
\r
1758 Reading and writing of statistics counters has been made forward-compatible
\r
1759 (unknown counters are retained).
\r
1764 Files are now read without using <code>mmap()</code>. This has two benefits: it’s more
\r
1765 robust against file changes during reading and it improves performance on
\r
1766 poor systems where <code>mmap()</code> doesn’t use the disk cache.
\r
1771 Added <code>.cp</code> and <code>.CP</code> as known C++ suffixes.
\r
1781 Added <code>-install_name</code> as an option known to take an argument. (This improves
\r
1782 statistics when using the Darwin linker.)
\r
1787 <div class="sect2">
\r
1788 <h3 id="_bug_fixes_16">Bug fixes</h3>
\r
1789 <div class="ulist"><ul>
\r
1792 Non-fatal error messages are now never printed to stderr but logged instead.
\r
1797 Fixed a bug affecting failing commands when <code>--ccache-skip</code> is used.
\r
1802 Made <code>--ccache-skip</code> work for all options.
\r
1807 EINTR is now handled correctly.
\r
1812 <div class="sect2">
\r
1813 <h3 id="_other_7">Other</h3>
\r
1814 <div class="ulist"><ul>
\r
1817 Work on porting ccache to win32 (native), mostly done by Ramiro Polla. The
\r
1818 port is not yet finished, but will hopefully be complete in some subsequent
\r
1824 Added a <code>--nostats</code> flag to the performance benchmark program.
\r
1829 Made the performance benchmark program more accurate when measuring cache
\r
1835 Added a new test framework for unit tests written in C.
\r
1840 Got rid of <code>configure-dev</code>; dev mode is now given by <code>dev.mk.in</code> presence.
\r
1845 Improved documentation on how to combine ccache with other compiler wrappers
\r
1846 (like <code>distcc</code>).
\r
1851 New <code>LICENSE.txt</code> file with licensing and copyright details about bundled
\r
1857 New <code>AUTHORS.txt</code> file with a list of ccache contributors.
\r
1862 New <code>HACKING.txt</code> file with some notes about ccache code conventions.
\r
1869 <div class="sect1">
\r
1870 <h2 id="_ccache_3_0_1">ccache 3.0.1</h2>
\r
1871 <div class="sectionbody">
\r
1872 <div class="paragraph"><p>Release date: 2010-07-15</p></div>
\r
1873 <div class="sect2">
\r
1874 <h3 id="_bug_fixes_17">Bug fixes</h3>
\r
1875 <div class="ulist"><ul>
\r
1878 The statistics counter “called for link” is now correctly updated when
\r
1879 linking with a single object file.
\r
1884 Fixed a problem with out-of-source builds.
\r
1891 <div class="sect1">
\r
1892 <h2 id="_ccache_3_0">ccache 3.0</h2>
\r
1893 <div class="sectionbody">
\r
1894 <div class="paragraph"><p>Release date: 2010-06-20</p></div>
\r
1895 <div class="sect2">
\r
1896 <h3 id="_general">General</h3>
\r
1897 <div class="ulist"><ul>
\r
1900 ccache is now licensed under the GNU General Public License (GPL) version 3
\r
1906 <div class="sect2">
\r
1907 <h3 id="_upgrade_notes">Upgrade notes</h3>
\r
1908 <div class="ulist"><ul>
\r
1911 The way the hashes are calculated has changed, so you won’t get cache hits
\r
1912 for compilation results stored by older ccache versions. Because of this, you
\r
1913 might as well clear the old cache directory with <code>ccache --clear</code> if you
\r
1914 want, unless you plan to keep using an older ccache version.
\r
1919 <div class="sect2">
\r
1920 <h3 id="_new_features_and_improvements_9">New features and improvements</h3>
\r
1921 <div class="ulist"><ul>
\r
1924 ccache now has a “direct mode” where it computes a hash of the source code
\r
1925 (including all included files) and compiler options without running the
\r
1926 preprocessor. By not running the preprocessor, CPU usage is reduced; the
\r
1927 speed is somewhere between 1 and 5 times that of ccache running in
\r
1928 traditional mode, depending on the circumstances. The speedup will be higher
\r
1929 when I/O is fast (e.g., when files are in the disk cache). The direct mode
\r
1930 can be disabled by setting <code>CCACHE_NODIRECT</code>.
\r
1935 Support has been added for rewriting absolute paths to relative paths when
\r
1936 hashing, in order to increase cache hit rate when building the same source
\r
1937 code in different directories even when compiling with <code>-g</code> and when using
\r
1938 absolute include directory paths. This is done by setting the
\r
1939 <code>CCACHE_BASEDIR</code> environment variable to an absolute path that specifies
\r
1940 which paths to rewrite.
\r
1945 Object files are now optionally stored compressed in the cache. The runtime
\r
1946 cost is negligible, and more files will fit in the ccache directory and in
\r
1947 the disk cache. Set <code>CCACHE_COMPRESS</code> to enable object file compression. Note
\r
1948 that you can’t use compression in combination with the hard link feature.
\r
1953 A <code>CCACHE_COMPILERCHECK</code> option has been added. This option tells ccache what
\r
1954 compiler-identifying information to hash to ensure that results retrieved
\r
1955 from the cache are accurate. Possible values are: none (don’t hash anything),
\r
1956 mtime (hash the compiler’s mtime and size) and content (hash the content of
\r
1957 the compiler binary). The default is mtime.
\r
1962 It is now possible to specify extra files whose contents should be included
\r
1963 in the hash sum by setting the <code>CCACHE_EXTRAFILES</code> option.
\r
1968 Added support for Objective-C and Objective-C++. The statistics counter
\r
1969 “not a C/C++ file” has been renamed to “unsupported source language”.
\r
1974 Added support for the <code>-x</code> compiler option.
\r
1979 Added support for long command-line options.
\r
1984 A <code>CACHEDIR.TAG</code> file is now created in the cache directory. See
\r
1985 <a href="http://www.brynosaurus.com/cachedir/">http://www.brynosaurus.com/cachedir/</a>.
\r
1990 Messages printed to the debug log (specified by <code>CCACHE_LOGFILE</code>) have been
\r
1996 You can relax some checks that ccache does in direct mode by setting
\r
1997 <code>CCACHE_SLOPPINESS</code>. See the manual for more information.
\r
2002 <code>CCACHE_TEMPDIR</code> no longer needs to be on the same filesystem as
\r
2003 <code>CCACHE_DIR</code>.
\r
2008 The default value of <code>CCACHE_TEMPDIR</code> has been changed to <code>$CCACHE_DIR/tmp</code>
\r
2009 to avoid cluttering the top directory.
\r
2014 Temporary files that later will be moved into the cache are now created in
\r
2015 the cache directory they will end up in. This makes ccache more friendly to
\r
2016 Linux’s directory layout.
\r
2021 Improved the test suite and added tests for most of the new functionality.
\r
2022 It’s now also possible to specify a subset of tests to run.
\r
2027 Standard error output from the compiler is now only stored in the cache if
\r
2028 it’s non-empty.
\r
2033 If the compiler produces no object file or an empty object file, but gives a
\r
2034 zero exit status (could be due to a file system problem, a buggy program
\r
2035 specified by <code>CCACHE_PREFIX</code>, etc.), ccache copes with it properly.
\r
2040 Added <code>installcheck</code> and <code>distcheck</code> make targets.
\r
2045 Clarified cache size limit options' and cleanup semantics.
\r
2050 Improved display of cache max size values.
\r
2055 The following options are no longer hashed in the preprocessor mode:
\r
2056 <code>-imacros</code>, <code>-imultilib</code>, <code>-iprefix</code>, <code>-iquote</code>, <code>-isysroot</code>, <code>-iwithprefix</code>,
\r
2057 <code>-iwithprefixbefore</code>, <code>-nostdinc</code>, <code>-nostdinc++</code> and <code>-U</code>.
\r
2062 <div class="sect2">
\r
2063 <h3 id="_bug_fixes_18">Bug fixes</h3>
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2064 <div class="ulist"><ul>
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2067 Various portability improvements.
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2072 Improved detection of home directory.
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2077 User-defined <code>CPPFLAGS</code> and <code>LDFLAGS</code> are now respected in the Makefile.
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2087 Computation of the hash sum has been improved to decrease the risk of hash
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2088 collisions. For instance, the compiler options <code>-X -Y</code> and <code>-X-Y</code> previously
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2089 contributed equally to the hash sum.
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2094 Bail out on too hard compiler options <code>--coverage</code>, <code>-fprofile-arcs</code>,
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2095 <code>-fprofile-generate</code>, <code>-fprofile-use</code>, <code>-frepo</code>, <code>-ftest-coverage</code> and
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2096 <code>-save-temps</code>. Also bail out on <code>@file</code> style options.
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2101 Errors when using multiple <code>-arch</code> compiler options are now noted as
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2102 “unsupported compiler option”.
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2107 <code>-MD</code>/<code>-MMD</code> options without <code>-MT</code>/<code>-MF</code> are now handled correctly.
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2112 The <code>-finput-charset</code> option is now handled correctly.
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2117 Added support for <code>-Wp,-MD</code> and <code>-Wp,-MMD</code> options.
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2122 The compiler options <code>-Xassembler</code>, <code>-b</code>, <code>-G</code> and <code>-V</code> are now correctly
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2123 recognized as taking an argument.
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2128 Debug information containing line numbers of predefined and command-line
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2129 macros (enabled with the compiler option <code>-g3</code>) will now be correct.
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2134 Corrected LRU cleanup handling of object files.
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2139 <code>utimes()</code> is now used instead of <code>utime()</code> when available.
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2144 Non-writable cache directories are now handled gracefully.
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2149 Corrected documentation about sharing the cache directory.
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2154 Fixed compilation warnings from GCC 4.3.
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2159 The command specified by <code>CCACHE_PREFIX</code> is no longer part of the hash.
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2164 Fixed bad memory access spotted by Valgrind.
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2169 Fixed a bug in <code>x_realloc</code>.
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2174 Freed memory is no longer referenced when compiling a <code>.i</code>/<code>.ii</code> file and
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2175 falling back to running the real compiler.
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2180 The test suite is now immune to external values of the <code>CCACHE_*</code> environment
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2186 Improved detection of recursive invocation.
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2191 The ccache binary is now not unconditionally stripped when installing.
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2196 Statistics counters are now correctly updated for -E option failures and
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2205 <div id="footnotes"><hr /></div>
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2207 <div id="footer-text">
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2208 Version 3.2.3<br />
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2210 2015-08-16 14:00:42 CEST
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projects / platform / upstream / ccache.git / blob