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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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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377 span.blue { color: blue; }
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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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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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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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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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491 border-style: hidden;
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498 text-align: center;
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505 vertical-align: top;
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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 /////////////////////////////////////////////////////////////////////
\r
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);
\r
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);
\r
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;
\r
730 asciidoc.install(2);
\r
734 <body class="article">
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736 <h1>ccache news</h1>
\r
737 <span id="revnumber">version 3.3.6</span>
\r
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">
\r
745 <h2 id="_ccache_3_3_6">ccache 3.3.6</h2>
\r
746 <div class="sectionbody">
\r
747 <div class="paragraph"><p>Release date: 2018-01-28</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 Improved instructions on how to get cache hits between different working
\r
759 <div class="sect2">
\r
760 <h3 id="_bug_fixes">Bug fixes</h3>
\r
761 <div class="ulist"><ul>
\r
764 Fixed regression in ccache 3.3.5 related to the <code>UNCACHED_ERR_FD</code> feature.
\r
771 <div class="sect1">
\r
772 <h2 id="_ccache_3_3_5">ccache 3.3.5</h2>
\r
773 <div class="sectionbody">
\r
774 <div class="paragraph"><p>Release date: 2018-01-13</p></div>
\r
775 <div class="sect2">
\r
776 <h3 id="_new_features_and_improvements_2">New features and improvements</h3>
\r
777 <div class="ulist"><ul>
\r
780 Documented how automatic cache cleanup works.
\r
785 <div class="sect2">
\r
786 <h3 id="_bug_fixes_2">Bug fixes</h3>
\r
787 <div class="ulist"><ul>
\r
790 Fixed a regression where the original order of debug options could be lost.
\r
791 This reverts the “Improved parsing of <code>-g*</code> options” feature in ccache 3.3.
\r
796 Multiple <code>-fdebug-prefix-map</code> options should now be handled correctly.
\r
801 Fixed matching of directories in the <code>ignore_headers_in_manifest</code>
\r
802 configuration option.
\r
807 Fixed detection of missing argument to <code>-opt</code>/<code>--options-file</code>.
\r
812 ccache now bails out when building a precompiled header if any of the
\r
813 corresponding header files have an updated timestamp. This fixes complaints
\r
819 Fixed a bug related to erroneously storing a dependency file with absolute
\r
820 paths in the cache on a preprocessed hit.
\r
825 <code>ccache -c/--cleanup</code> now works like documented: it just recalculates size
\r
826 counters and trims the cache to not exceed the max size and file number
\r
827 limits. Previously, the forced cleanup took “limit_multiple” into account,
\r
828 so that <code>ccache -c/--cleanup</code> by default would trim the cache to 80% of the
\r
834 ccache no longer ignores linker arguments for clang since clang warns about
\r
840 Plugged a couple of file descriptor leaks.
\r
845 Fixed a bug where ccache would skip hashing the compiler argument following a
\r
846 <code>-fno-working-directory</code>, <code>-fworking-directory</code>, <code>-nostdinc</code>, <code>-nostdinc++</code>,
\r
847 <code>-remap</code> or <code>-trigraphs</code> option in preprocessor mode.
\r
854 <div class="sect1">
\r
855 <h2 id="_ccache_3_3_4">ccache 3.3.4</h2>
\r
856 <div class="sectionbody">
\r
857 <div class="paragraph"><p>Release date: 2017-02-17</p></div>
\r
858 <div class="sect2">
\r
859 <h3 id="_new_features_and_improvements_3">New features and improvements</h3>
\r
860 <div class="ulist"><ul>
\r
863 Documented the different cache statistics counters.
\r
868 <div class="sect2">
\r
869 <h3 id="_bug_fixes_3">Bug fixes</h3>
\r
870 <div class="ulist"><ul>
\r
873 Fixed a regression in ccache 3.3 related to potentially bad content of
\r
874 dependency files when compiling identical source code but with different
\r
875 source paths. This was only partially fixed in 3.3.2 and reverts the new
\r
876 “Names of included files are no longer included in the hash of the
\r
877 compiler’s preprocessed output” feature in 3.3.
\r
882 Corrected statistics counter for <code>-optf</code>/<code>--options-file</code> failure.
\r
887 Fixed undefined behavior warnings in ccache found by <code>-fsanitize=undefined</code>.
\r
894 <div class="sect1">
\r
895 <h2 id="_ccache_3_3_3">ccache 3.3.3</h2>
\r
896 <div class="sectionbody">
\r
897 <div class="paragraph"><p>Release date: 2016-10-26</p></div>
\r
898 <div class="sect2">
\r
899 <h3 id="_bug_fixes_4">Bug fixes</h3>
\r
900 <div class="ulist"><ul>
\r
903 ccache now detects usage of <code>.incbin</code> assembler directives in the source code
\r
904 and avoids caching such compilations.
\r
911 <div class="sect1">
\r
912 <h2 id="_ccache_3_3_2">ccache 3.3.2</h2>
\r
913 <div class="sectionbody">
\r
914 <div class="paragraph"><p>Release date: 2016-09-28</p></div>
\r
915 <div class="sect2">
\r
916 <h3 id="_bug_fixes_5">Bug fixes</h3>
\r
917 <div class="ulist"><ul>
\r
920 Fixed a regression in ccache 3.3 related to potentially bad content of
\r
921 dependency files when compiling identical source code but with different
\r
927 Fixed a regression in ccache 3.3.1: ccache could get confused when using the
\r
928 compiler option <code>-Wp,</code> to pass multiple options to the preprocessor,
\r
929 resulting in missing dependency files from direct mode cache hits.
\r
936 <div class="sect1">
\r
937 <h2 id="_ccache_3_3_1">ccache 3.3.1</h2>
\r
938 <div class="sectionbody">
\r
939 <div class="paragraph"><p>Release date: 2016-09-07</p></div>
\r
940 <div class="sect2">
\r
941 <h3 id="_bug_fixes_6">Bug fixes</h3>
\r
942 <div class="ulist"><ul>
\r
945 Fixed a problem in the “multiple <code>-arch</code> options” support introduced in
\r
946 3.3. When using the direct mode (the default), different combinations of
\r
947 <code>-arch</code> options were not detected properly.
\r
952 Fixed an issue when compiler option <code>-Wp,-MT,path</code> is used instead of <code>-MT
\r
953 path</code> (and similar for <code>-MF</code>, <code>-MP</code> and <code>-MQ</code>) and <code>run_second_cpp</code>
\r
954 (<code>CCACHE_CPP2</code>) is enabled.
\r
961 <div class="sect1">
\r
962 <h2 id="_ccache_3_3">ccache 3.3</h2>
\r
963 <div class="sectionbody">
\r
964 <div class="paragraph"><p>Release date: 2016-08-27</p></div>
\r
965 <div class="sect2">
\r
966 <h3 id="_notes">Notes</h3>
\r
967 <div class="ulist"><ul>
\r
970 A C99-compatible compiler is now required to build ccache.
\r
975 <div class="sect2">
\r
976 <h3 id="_new_features_and_improvements_4">New features and improvements</h3>
\r
977 <div class="ulist"><ul>
\r
980 The configuration option <code>run_second_cpp</code> (<code>CCACHE_CPP2</code>) now defaults to
\r
981 true. This improves ccache’s out-of-the-box experience for compilers that
\r
982 can’t compile their own preprocessed output with the same outcome as if they
\r
983 compiled the real source code directly, e.g. newer versions of GCC and Clang.
\r
988 The configuration option <code>hash_dir</code> (<code>CCACHE_HASHDIR</code>) now defaults to true.
\r
993 Added a new <code>ignore_headers_in_manifest</code> configuration option, which
\r
994 specifies headers that should be ignored in the direct mode.
\r
999 Added a new <code>prefix_command_cpp</code> (<code>CCACHE_PREFIX_CPP</code>) configuration option,
\r
1000 which specifies one or several prefixes to add to the command line ccache
\r
1001 uses when invoking the preprocessor.
\r
1006 Added a new <code>limit_multiple</code> (<code>CCACHE_LIMIT_MULTIPLE</code>) configuration option,
\r
1007 which specifies how much of the cache to remove when cleaning.
\r
1012 Added a new <code>keep_comments_cpp</code> (<code>CCACHE_COMMENTS</code>) configuration option,
\r
1013 which tells ccache not to discard the comments before hashing preprocessor
\r
1014 output. This can be used to check documentation with <strong>-Wdocumentation</strong>.
\r
1019 Added a new sloppiness option <code>no_system_headers</code>, which tells ccache not to
\r
1020 include system headers in manifest files.
\r
1025 Added a new statistics counter that tracks the number of performed cleanups
\r
1026 due to the cache size being over the limit. The value is shown in the output
\r
1027 of “ccache -s”.
\r
1032 Added support for relocating debug info directory using <code>-fdebug-prefix-map</code>.
\r
1033 This allows for cache hits even when <code>hash_dir</code> is used in combination with
\r
1034 <code>base_dir</code>.
\r
1039 Added a new “cache hit rate” field to the output of “ccache -s”.
\r
1044 Added support for caching compilation of assembler code produced by e.g.
\r
1045 “gcc -S file.c”.
\r
1050 Added support for cuda including the -optf/--options-file option.
\r
1055 Added support for Fortran 77.
\r
1060 Added support for multiple <code>-arch</code> options to produce "fat binaries".
\r
1065 Multiple identical <code>-arch</code> arguments are now handled without bailing.
\r
1070 The concatenated form of some long compiler options is now recognized, for
\r
1071 example when using <code>-isystemPATH</code> instead of <code>-isystem PATH</code>.
\r
1076 If hard-linking is enabled and but fails (e.g. due to cross-device linking),
\r
1077 ccache now falls back to copying instead of running the compiler.
\r
1082 Made the <code>hash_dir</code> option only have effect when generating debug info.
\r
1087 ccache now knows how to convert absolute paths to relative paths inside
\r
1088 dependency files when using <code>base_dir</code>.
\r
1093 Improved parsing of <code>-g*</code> options.
\r
1098 Made ccache understand <code>-Wp,-D*</code> options.
\r
1103 ccache now understands the undocumented <code>-coverage</code> (only one dash) GCC
\r
1109 Names of included files are no longer included in the hash of the compiler’s
\r
1110 preprocessed output. This leads to more potential cache hits when not using
\r
1116 Increased buffer size used when reading file data. This improves performance
\r
1122 <div class="sect2">
\r
1123 <h3 id="_bug_fixes_7">Bug fixes</h3>
\r
1124 <div class="ulist"><ul>
\r
1127 Bail out on too hard compiler option <code>-P</code>.
\r
1132 Fixed clang test suite when running on Linux.
\r
1137 Fixed build and test for MinGW32 and Windows.
\r
1144 <div class="sect1">
\r
1145 <h2 id="_ccache_3_2_9">ccache 3.2.9</h2>
\r
1146 <div class="sectionbody">
\r
1147 <div class="paragraph"><p>Release date: 2016-09-28</p></div>
\r
1148 <div class="sect2">
\r
1149 <h3 id="_bug_fixes_8">Bug fixes</h3>
\r
1150 <div class="ulist"><ul>
\r
1153 Fixed a regression in ccache 3.2.8: ccache could get confused when using the
\r
1154 compiler option <code>-Wp,</code> to pass multiple options to the preprocessor,
\r
1155 resulting in missing dependency files from direct mode cache hits.
\r
1162 <div class="sect1">
\r
1163 <h2 id="_ccache_3_2_8">ccache 3.2.8</h2>
\r
1164 <div class="sectionbody">
\r
1165 <div class="paragraph"><p>Release date: 2016-09-07</p></div>
\r
1166 <div class="sect2">
\r
1167 <h3 id="_bug_fixes_9">Bug fixes</h3>
\r
1168 <div class="ulist"><ul>
\r
1171 Fixed an issue when compiler option <code>-Wp,-MT,path</code> is used instead of <code>-MT
\r
1172 path</code> (and similar for <code>-MF</code>, <code>-MP</code> and <code>-MQ</code>) and <code>run_second_cpp</code>
\r
1173 (<code>CCACHE_CPP2</code>) is enabled.
\r
1178 ccache now understands the undocumented <code>-coverage</code> (only one dash) GCC
\r
1186 <div class="sect1">
\r
1187 <h2 id="_ccache_3_2_7">ccache 3.2.7</h2>
\r
1188 <div class="sectionbody">
\r
1189 <div class="paragraph"><p>Release date: 2016-07-20</p></div>
\r
1190 <div class="sect2">
\r
1191 <h3 id="_bug_fixes_10">Bug fixes</h3>
\r
1192 <div class="ulist"><ul>
\r
1195 Fixed a bug which could lead to false cache hits for compiler command lines
\r
1196 with a missing argument to an option that takes an argument.
\r
1201 ccache now knows how to work around a glitch in the output of GCC 6’s
\r
1209 <div class="sect1">
\r
1210 <h2 id="_ccache_3_2_6">ccache 3.2.6</h2>
\r
1211 <div class="sectionbody">
\r
1212 <div class="paragraph"><p>Release date: 2016-07-12</p></div>
\r
1213 <div class="sect2">
\r
1214 <h3 id="_bug_fixes_11">Bug fixes</h3>
\r
1215 <div class="ulist"><ul>
\r
1218 Fixed build problem on QNX, which lacks “SA_RESTART”.
\r
1223 Bail out on compiler option <code>-fstack-usage</code> since it creates a <code>.su</code> file
\r
1224 which ccache currently doesn’t handle.
\r
1229 Fixed a bug where (due to ccache rewriting paths) the compiler could choose
\r
1230 incorrect include files if <code>CCACHE_BASEDIR</code> is used and the source file path
\r
1231 is absolute and is a symlink.
\r
1238 <div class="sect1">
\r
1239 <h2 id="_ccache_3_2_5">ccache 3.2.5</h2>
\r
1240 <div class="sectionbody">
\r
1241 <div class="paragraph"><p>Release date: 2016-04-17</p></div>
\r
1242 <div class="sect2">
\r
1243 <h3 id="_new_features_and_improvements_5">New features and improvements</h3>
\r
1244 <div class="ulist"><ul>
\r
1247 Only pass clang-specific <code>-stdlib=</code> to the preprocessor.
\r
1252 Improved handling of stale NFS handles.
\r
1257 Made it harder to misinterpret documentation of boolean environment settings'
\r
1263 <div class="sect2">
\r
1264 <h3 id="_bug_fixes_12">Bug fixes</h3>
\r
1265 <div class="ulist"><ul>
\r
1268 Include m4 files used by configure.ac in the source dist archives.
\r
1273 Corrected "Performance" section in the manual regarding <code>__DATE_</code>, <code>__TIME__</code>
\r
1274 and <code>__FILE__</code> macros.
\r
1279 Fixed build on Solaris 10+ and AIX 7.
\r
1284 Fixed failure to create directories on QNX.
\r
1289 Don’t (try to) update manifest file in “read-only” and “read-only direct”
\r
1295 Fixed a bug in caching of <code>stat</code> system calls in “file_stat_matches
\r
1296 sloppiness mode”.
\r
1301 Fixed bug in hashing of clang plugins, leading to unnecessary cache misses.
\r
1306 Fixed --print-config to show “pch_defines sloppiness”.
\r
1311 The man page is now built when running “make install” from Git repository
\r
1319 <div class="sect1">
\r
1320 <h2 id="_ccache_3_2_4">ccache 3.2.4</h2>
\r
1321 <div class="sectionbody">
\r
1322 <div class="paragraph"><p>Release date: 2015-10-08</p></div>
\r
1323 <div class="sect2">
\r
1324 <h3 id="_bug_fixes_13">Bug fixes</h3>
\r
1325 <div class="ulist"><ul>
\r
1328 Fixed build error related to zlib on systems with older make versions
\r
1329 (regression in ccache 3.2.3).
\r
1334 Made conversion-to-bool explicit to avoid build warnings (and potential
\r
1335 runtime errors) on legacy systems.
\r
1340 Improved signal handling: Kill compiler on SIGTERM; wait for compiler to exit
\r
1341 before exiting; die appropriately.
\r
1346 Minor fixes related to Windows support.
\r
1351 The correct compression level is now used if compression is requested.
\r
1356 Fixed a bug where cache cleanup could be run too early for caches larger than
\r
1357 64 GiB on 32-bit systems.
\r
1364 <div class="sect1">
\r
1365 <h2 id="_ccache_3_2_3">ccache 3.2.3</h2>
\r
1366 <div class="sectionbody">
\r
1367 <div class="paragraph"><p>Release date: 2015-08-16</p></div>
\r
1368 <div class="sect2">
\r
1369 <h3 id="_new_features_and_improvements_6">New features and improvements</h3>
\r
1370 <div class="ulist"><ul>
\r
1373 Added support for compiler option <code>-gsplit-dwarf</code>.
\r
1378 <div class="sect2">
\r
1379 <h3 id="_bug_fixes_14">Bug fixes</h3>
\r
1380 <div class="ulist"><ul>
\r
1383 Support external zlib in nonstandard directory.
\r
1388 Avoid calling <code>exit()</code> inside an exit handler.
\r
1393 Let exit handler terminate properly.
\r
1398 Bail out on compiler option <code>--save-temps</code> in addition to <code>-save-temps</code>.
\r
1403 Only log "Disabling direct mode" once when failing to read potential include
\r
1411 <div class="sect1">
\r
1412 <h2 id="_ccache_3_2_2">ccache 3.2.2</h2>
\r
1413 <div class="sectionbody">
\r
1414 <div class="paragraph"><p>Release date: 2015-05-10</p></div>
\r
1415 <div class="sect2">
\r
1416 <h3 id="_new_features_and_improvements_7">New features and improvements</h3>
\r
1417 <div class="ulist"><ul>
\r
1420 Added support for <code>CCACHE_COMPILERCHECK=string:<value></code>. This is a faster
\r
1421 alternative to <code>CCACHE_COMPILERCHECK=<command></code> if the command’s output can
\r
1422 be precalculated by the build system.
\r
1427 Add support for caching code coverage results (compiling for gcov).
\r
1432 <div class="sect2">
\r
1433 <h3 id="_bug_fixes_15">Bug fixes</h3>
\r
1434 <div class="ulist"><ul>
\r
1437 Made hash of cached result created with and without <code>CCACHE_CPP2</code> different.
\r
1438 This makes it possible to rebuild with <code>CCACHE_CPP2</code> set without having to
\r
1439 clear the cache to get new results.
\r
1444 Don’t try to reset a non-existing stats file. This avoids “No such file or
\r
1445 directory” messages in the ccache log when the cache directory doesn’t
\r
1451 Fixed a bug where ccache deleted clang diagnostics after compiler failures.
\r
1456 Avoid performing an unnecessary copy of the object file on a cache miss.
\r
1461 Bail out on too hard compiler option <code>-fmodules</code>.
\r
1466 Bail out on too hard compiler option <code>-fplugin=libcc1plugin</code> (interaction
\r
1472 Fixed build error when compiling ccache with recent clang versions.
\r
1477 Removed signal-unsafe code from signal handler.
\r
1482 Corrected logic for when to output cached stderr.
\r
1487 Wipe the whole cached result on failure retrieving a cached file.
\r
1492 Fixed build error when compiling ccache with recent clang versions.
\r
1499 <div class="sect1">
\r
1500 <h2 id="_ccache_3_2_1">ccache 3.2.1</h2>
\r
1501 <div class="sectionbody">
\r
1502 <div class="paragraph"><p>Release date: 2014-12-10</p></div>
\r
1503 <div class="sect2">
\r
1504 <h3 id="_bug_fixes_16">Bug fixes</h3>
\r
1505 <div class="ulist"><ul>
\r
1508 Fixed regression in temporary file handling, which lead to incorrect
\r
1509 permissions for stats, manifest and ccache.conf files in the cache.
\r
1514 <code>CACHEDIR.TAG</code> files are now created in the [0-9a-f] subdirectories so that
\r
1515 ccache.conf is not lost in backups.
\r
1520 Made the default cache size suffix <code>G</code>, as previously documented.
\r
1525 <code>-fdiagnostics-color=auto</code> is now passed to the compiler even if stderr is
\r
1526 redirected. This fixes a problem when, for instance, a configure test probes
\r
1527 if the compiler (wrapped via ccache) supports <code>-fdiagnostics-color=auto</code>.
\r
1532 Added missing documentation for <code>max_files</code> and <code>max_size</code> configuration
\r
1540 <div class="sect1">
\r
1541 <h2 id="_ccache_3_2">ccache 3.2</h2>
\r
1542 <div class="sectionbody">
\r
1543 <div class="paragraph"><p>Release date: 2014-11-17</p></div>
\r
1544 <div class="sect2">
\r
1545 <h3 id="_new_features_and_improvements_8">New features and improvements</h3>
\r
1546 <div class="ulist"><ul>
\r
1549 Added support for configuring ccache via one or several configuration files
\r
1550 instead of via environment variables. Environment variables still have
\r
1551 priority but are no longer the recommended way of customizing ccache
\r
1552 behavior. See the manual for more information.
\r
1557 Added support for compiler error/warning messages with color.
\r
1562 Made creation of temporary directories and cache directories smarter to avoid
\r
1563 unnecessary <code>stat</code> calls.
\r
1568 Improved efficiency of the algorithm that scans for <code>__DATE_</code> and <code>__TIME__</code>
\r
1569 tokens in the hashed source code.
\r
1574 Added support for several binaries (separated by space) in <code>CCACHE_PREFIX</code>.
\r
1579 The <code>-c</code> option is no longer passed to the preprocessor. This fixes problems
\r
1580 with clang and Solaris’s C++ compiler.
\r
1585 ccache no longer passes preprocessor options like <code>-D</code> and <code>-I</code> to the
\r
1586 compiler when compiling preprocessed output. This fixes warnings emitted by
\r
1592 Compiler options <code>-fprofile-generate</code>, <code>-fprofile-arcs</code>, <code>-fprofile-use</code> and
\r
1593 <code>-fbranch-probabilities</code> are now handled without bailing.
\r
1598 Added support for clang’s <code>--serialize-diagnostic</code> option, storing the
\r
1599 diagnostic file (<code>.dia</code>) in the cache.
\r
1604 Added support for precompiled headers when using clang.
\r
1609 Added support for clang <code>.pth</code> (pretokenized header) files.
\r
1614 Changed the <code>-x</code> language option to use the new objective C standard for GCC
\r
1620 On a cache miss, ccache now instructs the compiler to create the object file
\r
1621 at the real destination and then copies the file into the cache instead of
\r
1622 the other way around. This is needed to support compiler options like
\r
1623 <code>-fprofile-arcs</code> and <code>--serialize-diagnostics</code>.
\r
1628 ccache now checks that included files' ctimes aren’t too new. This check can
\r
1629 be turned off by adding <code>include_file_ctime</code> to the “ccache sloppiness”
\r
1635 Added possibility to get cache hits based on filename, size, mtime and ctime
\r
1636 only. On other words, source code files are not even read, only stat-ed. This
\r
1637 operation mode is opt-in by adding <code>file_stat_matches</code> to the “ccache
\r
1638 sloppiness” setting.
\r
1643 The filename part of options like <code>-Wp,-MDfilename</code> is no longer included in
\r
1644 the hash since the filename doesn’t have any bearing on the result.
\r
1649 Added a “read-only direct” configuration setting, which is like the
\r
1650 ordinary read-only setting except that ccache will only try to retrieve
\r
1651 results from the cache using the direct mode, not the preprocessor mode.
\r
1656 The display and interpretation of cache size has been changed to use SI
\r
1662 Default cache size is now 5 GB (was previously 1 GiB).
\r
1667 Added configuration option to set the compression level of compressed object
\r
1668 files in the cache.
\r
1673 Added support for <code>@file</code> and <code>-@file</code> arguments (reading options from a
\r
1679 <code>-Wl,</code> options are no longer included in the hash since they don’t affect
\r
1685 Bail out on too hard compiler option <code>-Wp,-P</code>.
\r
1690 Optimized MD4 calculation code on little-endian systems.
\r
1695 Various improvements and fixes on win32.
\r
1700 Improved logging to the ccache log file.
\r
1705 Added <code>--dump-manifest</code> command-line option for debugging purposes.
\r
1710 Added <code>--with-bundled-zlib</code> configure option.
\r
1715 Upgraded bundled zlib to version 1.2.8.
\r
1720 Improved <code>dev.mk</code> to be more platform independent.
\r
1725 Made the test suite work with clang and gcc-llvm on OS X.
\r
1730 Various other improvements of the test suite.
\r
1735 <div class="sect2">
\r
1736 <h3 id="_bug_fixes_17">Bug fixes</h3>
\r
1737 <div class="ulist"><ul>
\r
1740 Any previous <code>.stderr</code> is now removed from the cache when recaching.
\r
1745 Fixed an issue when handling the <code>-arch</code> compiler option with an argument.
\r
1750 Fixed race condition when creating the initial cache directory.
\r
1755 Fixed test suite failures when <code>CC</code> is a ccache-wrapped compiler.
\r
1762 <div class="sect1">
\r
1763 <h2 id="_ccache_3_1_12">ccache 3.1.12</h2>
\r
1764 <div class="sectionbody">
\r
1765 <div class="paragraph"><p>Release date: 2016-07-12</p></div>
\r
1766 <div class="sect2">
\r
1767 <h3 id="_bug_fixes_18">Bug fixes</h3>
\r
1768 <div class="ulist"><ul>
\r
1771 Fixed a bug where (due to ccache rewriting paths) the compiler could choose
\r
1772 incorrect include files if <code>CCACHE_BASEDIR</code> is used and the source file path
\r
1773 is absolute and is a symlink.
\r
1780 <div class="sect1">
\r
1781 <h2 id="_ccache_3_1_11">ccache 3.1.11</h2>
\r
1782 <div class="sectionbody">
\r
1783 <div class="paragraph"><p>Release date: 2015-03-07</p></div>
\r
1784 <div class="sect2">
\r
1785 <h3 id="_bug_fixes_19">Bug fixes</h3>
\r
1786 <div class="ulist"><ul>
\r
1789 Fixed bug which could result in false cache hits when source code contains
\r
1790 <code>'"'</code> followed by <code>" /*"</code> or <code>" //"</code> (with variations).
\r
1795 Made hash of cached result created with and without <code>CCACHE_CPP2</code> different.
\r
1796 This makes it possible to rebuild with <code>CCACHE_CPP2</code> set without having to
\r
1797 clear the cache to get new results.
\r
1802 Don’t try to reset a non-existing stats file. This avoids “No such file or
\r
1803 directory” messages in the ccache log when the cache directory doesn’t
\r
1811 <div class="sect1">
\r
1812 <h2 id="_ccache_3_1_10">ccache 3.1.10</h2>
\r
1813 <div class="sectionbody">
\r
1814 <div class="paragraph"><p>Release date: 2014-10-19</p></div>
\r
1815 <div class="sect2">
\r
1816 <h3 id="_new_features_and_improvements_9">New features and improvements</h3>
\r
1817 <div class="ulist"><ul>
\r
1820 Added support for the <code>-Xclang</code> compiler option.
\r
1825 Improved handling of exit code of internally executed processes.
\r
1830 Zero length object files in the cache are now rejected as invalid.
\r
1835 Bail out on option <code>-gsplit-dwarf</code> (since it produces multiple output files).
\r
1840 Compiler option <code>-fdebug-prefix-map</code> is now ignored (not part of the hash).
\r
1841 (The <code>-fdebug-prefix-map</code> option may be used in combination with
\r
1842 <code>CCACHE_BASEDIR</code> to reuse results across different directories.)
\r
1847 Added note in documentation that <code>--ccache-skip</code> currently does not mean
\r
1848 “don’t hash the following option”.
\r
1853 To enable support for precompiled headers (PCH), <code>CCACHE_SLOPPINESS</code> now also
\r
1854 needs to include the new <code>pch_defines</code> sloppiness. This is because ccache
\r
1855 can’t detect changes in the source code when only defined macros have been
\r
1861 Stale files in the internal temporary directory (<code><ccache_dir>/tmp</code>) are now
\r
1862 cleaned up if they are older than one hour.
\r
1867 <div class="sect2">
\r
1868 <h3 id="_bug_fixes_20">Bug fixes</h3>
\r
1869 <div class="ulist"><ul>
\r
1872 Fixed path canonicalization in <code>make_relative_path()</code> when path doesn’t
\r
1878 Fixed bug in <code>common_dir_prefix_length()</code>. This corrects the <code>CCACHE_BASEDIR</code>
\r
1884 ccache no longer tries to create the cache directory when <code>CCACHE_DISABLE</code> is
\r
1890 Fixed bug when reading manifests with a very large number of file info
\r
1896 Fixed problem with logging of current working directory.
\r
1903 <div class="sect1">
\r
1904 <h2 id="_ccache_3_1_9">ccache 3.1.9</h2>
\r
1905 <div class="sectionbody">
\r
1906 <div class="paragraph"><p>Release date: 2013-01-06</p></div>
\r
1907 <div class="sect2">
\r
1908 <h3 id="_bug_fixes_21">Bug fixes</h3>
\r
1909 <div class="ulist"><ul>
\r
1912 The EAGAIN signal is now handled correctly when emitting cached stderr
\r
1913 output. This fixes a problem triggered by large error outputs from the
\r
1919 Subdirectories in the cache are no longer created in read-only mode.
\r
1924 Fixed so that ccache’s log file descriptor is not made available to the
\r
1930 Improved error reporting when failing to create temporary stdout/stderr files
\r
1931 when executing the compiler.
\r
1936 Disappearing temporary stdout/stderr files are now handled gracefully.
\r
1941 <div class="sect2">
\r
1942 <h3 id="_other">Other</h3>
\r
1943 <div class="ulist"><ul>
\r
1946 Fixed test suite to work on ecryptfs.
\r
1953 <div class="sect1">
\r
1954 <h2 id="_ccache_3_1_8">ccache 3.1.8</h2>
\r
1955 <div class="sectionbody">
\r
1956 <div class="paragraph"><p>Release date: 2012-08-11</p></div>
\r
1957 <div class="sect2">
\r
1958 <h3 id="_new_features_and_improvements_10">New features and improvements</h3>
\r
1959 <div class="ulist"><ul>
\r
1962 Made paths to dependency files relative in order to increase cache hits.
\r
1967 Added work-around to make ccache work with buggy GCC 4.1 when creating a
\r
1968 pre-compiled header.
\r
1973 Clang plugins are now hashed to catch plugin upgrades.
\r
1978 <div class="sect2">
\r
1979 <h3 id="_bug_fixes_22">Bug fixes</h3>
\r
1980 <div class="ulist"><ul>
\r
1983 Fixed crash when the current working directory has been removed.
\r
1988 Fixed crash when stderr is closed.
\r
1993 Corrected a corner case when parsing backslash escapes in string
\r
1999 Paths are now correctly canonicalized when computing paths relative to the
\r
2005 <div class="sect2">
\r
2006 <h3 id="_other_2">Other</h3>
\r
2007 <div class="ulist"><ul>
\r
2010 Made git version macro work when compiling outside of the source directory.
\r
2015 Fixed <code>static_assert</code> macro definition clash with GCC 4.7.
\r
2022 <div class="sect1">
\r
2023 <h2 id="_ccache_3_1_7">ccache 3.1.7</h2>
\r
2024 <div class="sectionbody">
\r
2025 <div class="paragraph"><p>Release date: 2012-01-08</p></div>
\r
2026 <div class="sect2">
\r
2027 <h3 id="_bug_fixes_23">Bug fixes</h3>
\r
2028 <div class="ulist"><ul>
\r
2031 Non-writable <code>CCACHE_DIR</code> is now handled gracefully when <code>CCACHE_READONLY</code> is
\r
2037 Made failure to create files (typically due to bad directory permissions) in
\r
2038 the cache directory fatal. Previously, such failures were silently and
\r
2039 erroneously flagged as "compiler produced stdout".
\r
2044 Both the <code>-specs=file</code> and <code>--specs=file</code> forms are now recognized.
\r
2049 Added recognition and hashing of GCC plugins specified with <code>-fplugin=file</code>.
\r
2054 <code>CCACHE_COMPILERCHECK</code> now also determines how to hash explicit specs files
\r
2055 (<code>-specs=file</code>).
\r
2060 Added <code>CPATH</code>, <code>C_INCLUDE_PATH</code> and similar environment variables to the hash
\r
2061 to avoid false cache hits when such variables have changed.
\r
2066 Corrected log message when unify mode is enabled.
\r
2071 Reverted the GCC bug compatibility introduced in ccache 3.1.5 for <code>-MT</code>/<code>-MQ</code>
\r
2072 options with concatenated arguments. (The bug is fixed in recent GCC
\r
2078 <div class="sect2">
\r
2079 <h3 id="_other_3">Other</h3>
\r
2080 <div class="ulist"><ul>
\r
2083 Corrected license header for <code>mdfour.c</code>.
\r
2088 Improved documentation on how to fix bad object files in the cache.
\r
2095 <div class="sect1">
\r
2096 <h2 id="_ccache_3_1_6">ccache 3.1.6</h2>
\r
2097 <div class="sectionbody">
\r
2098 <div class="paragraph"><p>Release date: 2011-08-21</p></div>
\r
2099 <div class="sect2">
\r
2100 <h3 id="_new_features_and_improvements_11">New features and improvements</h3>
\r
2101 <div class="ulist"><ul>
\r
2104 Rewrite argument to <code>--sysroot</code> if <code>CCACHE_BASEDIR</code> is used.
\r
2109 <div class="sect2">
\r
2110 <h3 id="_bug_fixes_24">Bug fixes</h3>
\r
2111 <div class="ulist"><ul>
\r
2114 Don’t crash if <code>getcwd()</code> fails.
\r
2119 Fixed alignment of “called for preprocessing” counter.
\r
2126 <div class="sect1">
\r
2127 <h2 id="_ccache_3_1_5">ccache 3.1.5</h2>
\r
2128 <div class="sectionbody">
\r
2129 <div class="paragraph"><p>Release date: 2011-05-29</p></div>
\r
2130 <div class="sect2">
\r
2131 <h3 id="_new_features_and_improvements_12">New features and improvements</h3>
\r
2132 <div class="ulist"><ul>
\r
2135 Added a new statistics counter named “called for preprocessing”.
\r
2140 The original command line is now logged to the file specified with
\r
2141 <code>CCACHE_LOGFILE</code>.
\r
2146 Improved error logging when system calls fail.
\r
2151 Added support for rewriting absolute paths in <code>-F</code>/<code>-iframework</code> GCC
\r
2157 Improved order of statistics counters in <code>ccache -s</code> output.
\r
2162 <div class="sect2">
\r
2163 <h3 id="_bug_fixes_25">Bug fixes</h3>
\r
2164 <div class="ulist"><ul>
\r
2167 The <code>-MF</code>/<code>-MT</code>/<code>-MQ</code> options with concatenated argument are now handled
\r
2168 correctly when they are last on the command line.
\r
2173 ccache is now bug compatible with GCC for the <code>-MT</code>/<code>-MQ</code> options with
\r
2174 concatenated arguments.
\r
2179 Fixed a minor memory leak.
\r
2184 Systems that lack (and don’t need to be linked with) libm are now supported.
\r
2191 <div class="sect1">
\r
2192 <h2 id="_ccache_3_1_4">ccache 3.1.4</h2>
\r
2193 <div class="sectionbody">
\r
2194 <div class="paragraph"><p>Release date: 2011-01-09</p></div>
\r
2195 <div class="sect2">
\r
2196 <h3 id="_bug_fixes_26">Bug fixes</h3>
\r
2197 <div class="ulist"><ul>
\r
2200 Made a work-around for a bug in <code>gzputc()</code> in zlib 1.2.5.
\r
2205 Corrupt manifest files are now removed so that they won’t block direct mode
\r
2211 ccache now copes with file systems that don’t know about symbolic links.
\r
2216 The file handle in now correctly closed on write error when trying to create
\r
2224 <div class="sect1">
\r
2225 <h2 id="_ccache_3_1_3">ccache 3.1.3</h2>
\r
2226 <div class="sectionbody">
\r
2227 <div class="paragraph"><p>Release date: 2010-11-28</p></div>
\r
2228 <div class="sect2">
\r
2229 <h3 id="_bug_fixes_27">Bug fixes</h3>
\r
2230 <div class="ulist"><ul>
\r
2233 The -MFarg, -MTarg and -MQarg compiler options (i.e, without space between
\r
2234 option and argument) are now handled correctly.
\r
2239 <div class="sect2">
\r
2240 <h3 id="_other_4">Other</h3>
\r
2241 <div class="ulist"><ul>
\r
2244 Portability fixes for HP-UX 11.00 and other esoteric systems.
\r
2251 <div class="sect1">
\r
2252 <h2 id="_ccache_3_1_2">ccache 3.1.2</h2>
\r
2253 <div class="sectionbody">
\r
2254 <div class="paragraph"><p>Release date: 2010-11-21</p></div>
\r
2255 <div class="sect2">
\r
2256 <h3 id="_bug_fixes_28">Bug fixes</h3>
\r
2257 <div class="ulist"><ul>
\r
2260 Bail out on too hard compiler options <code>-fdump-*</code>.
\r
2265 NULL return values from malloc/calloc of zero bytes are now handled
\r
2271 Fixed issue when parsing precompiler output on AIX.
\r
2276 <div class="sect2">
\r
2277 <h3 id="_other_5">Other</h3>
\r
2278 <div class="ulist"><ul>
\r
2281 Improved documentation on which information is included in the hash sum.
\r
2286 Made the “too new header file” test case work on file systems with
\r
2287 unsynchronized clocks.
\r
2292 The test suite now also works on systems that lack a /dev/zero.
\r
2299 <div class="sect1">
\r
2300 <h2 id="_ccache_3_1_1">ccache 3.1.1</h2>
\r
2301 <div class="sectionbody">
\r
2302 <div class="paragraph"><p>Release date: 2010-11-07</p></div>
\r
2303 <div class="sect2">
\r
2304 <h3 id="_bug_fixes_29">Bug fixes</h3>
\r
2305 <div class="ulist"><ul>
\r
2308 ccache now falls back to preprocessor mode when a non-regular include file
\r
2309 (device, socket, etc) has been detected so that potential hanging due to
\r
2310 blocking reads is avoided.
\r
2315 CRC errors are now detected when decompressing compressed files in the cache.
\r
2320 Fixed potential object file corruption race on NFS.
\r
2325 Minor documentation corrections.
\r
2330 Fixed configure detection of ar.
\r
2335 ccache development version (set by dev.mk) now works with gits whose
\r
2336 <code>describe</code> command doesn’t understand <code>--dirty</code>.
\r
2341 <div class="sect2">
\r
2342 <h3 id="_other_6">Other</h3>
\r
2343 <div class="ulist"><ul>
\r
2346 Minor debug log message improvements.
\r
2353 <div class="sect1">
\r
2354 <h2 id="_ccache_3_1">ccache 3.1</h2>
\r
2355 <div class="sectionbody">
\r
2356 <div class="paragraph"><p>Release date: 2010-09-16</p></div>
\r
2357 <div class="sect2">
\r
2358 <h3 id="_new_features_and_improvements_13">New features and improvements</h3>
\r
2359 <div class="ulist"><ul>
\r
2362 Added support for hashing the output of a custom command (e.g. <code>%compiler%
\r
2363 --version</code>) to identify the compiler instead of stat-ing or hashing the
\r
2364 compiler binary. This can improve robustness when the compiler (as seen by
\r
2365 ccache) actually isn’t the real compiler but another compiler wrapper.
\r
2370 Added support for caching compilations that use precompiled headers. (See the
\r
2371 manual for important instructions regarding this.)
\r
2376 Locking of the files containing statistics counters is now done using
\r
2377 symlinks instead of POSIX locks. This should make ccache behave a lot better
\r
2378 on file systems where POSIX locks are slow or broken (e.g. NFS on some
\r
2384 Manifest files are now updated without the need of taking locks.
\r
2389 Updates of statistics counters are now always done in one of the sub-level
\r
2390 statistics files. This reduces lock contention, which especially improves
\r
2391 performance on slow NFS mounts.
\r
2396 Reading and writing of statistics counters has been made forward-compatible
\r
2397 (unknown counters are retained).
\r
2402 Files are now read without using <code>mmap()</code>. This has two benefits: it’s more
\r
2403 robust against file changes during reading and it improves performance on
\r
2404 poor systems where <code>mmap()</code> doesn’t use the disk cache.
\r
2409 Added <code>.cp</code> and <code>.CP</code> as known C++ suffixes.
\r
2419 Added <code>-install_name</code> as an option known to take an argument. (This improves
\r
2420 statistics when using the Darwin linker.)
\r
2425 <div class="sect2">
\r
2426 <h3 id="_bug_fixes_30">Bug fixes</h3>
\r
2427 <div class="ulist"><ul>
\r
2430 Non-fatal error messages are now never printed to stderr but logged instead.
\r
2435 Fixed a bug affecting failing commands when <code>--ccache-skip</code> is used.
\r
2440 Made <code>--ccache-skip</code> work for all options.
\r
2445 EINTR is now handled correctly.
\r
2450 <div class="sect2">
\r
2451 <h3 id="_other_7">Other</h3>
\r
2452 <div class="ulist"><ul>
\r
2455 Work on porting ccache to win32 (native), mostly done by Ramiro Polla. The
\r
2456 port is not yet finished, but will hopefully be complete in some subsequent
\r
2462 Added a <code>--nostats</code> flag to the performance benchmark program.
\r
2467 Made the performance benchmark program more accurate when measuring cache
\r
2473 Added a new test framework for unit tests written in C.
\r
2478 Got rid of <code>configure-dev</code>; dev mode is now given by <code>dev.mk.in</code> presence.
\r
2483 Improved documentation on how to combine ccache with other compiler wrappers
\r
2484 (like <code>distcc</code>).
\r
2489 New <code>LICENSE.txt</code> file with licensing and copyright details about bundled
\r
2495 New <code>AUTHORS.txt</code> file with a list of ccache contributors.
\r
2500 New <code>HACKING.txt</code> file with some notes about ccache code conventions.
\r
2507 <div class="sect1">
\r
2508 <h2 id="_ccache_3_0_1">ccache 3.0.1</h2>
\r
2509 <div class="sectionbody">
\r
2510 <div class="paragraph"><p>Release date: 2010-07-15</p></div>
\r
2511 <div class="sect2">
\r
2512 <h3 id="_bug_fixes_31">Bug fixes</h3>
\r
2513 <div class="ulist"><ul>
\r
2516 The statistics counter “called for link” is now correctly updated when
\r
2517 linking with a single object file.
\r
2522 Fixed a problem with out-of-source builds.
\r
2529 <div class="sect1">
\r
2530 <h2 id="_ccache_3_0">ccache 3.0</h2>
\r
2531 <div class="sectionbody">
\r
2532 <div class="paragraph"><p>Release date: 2010-06-20</p></div>
\r
2533 <div class="sect2">
\r
2534 <h3 id="_general">General</h3>
\r
2535 <div class="ulist"><ul>
\r
2538 ccache is now licensed under the GNU General Public License (GPL) version 3
\r
2544 <div class="sect2">
\r
2545 <h3 id="_upgrade_notes">Upgrade notes</h3>
\r
2546 <div class="ulist"><ul>
\r
2549 The way the hashes are calculated has changed, so you won’t get cache hits
\r
2550 for compilation results stored by older ccache versions. Because of this, you
\r
2551 might as well clear the old cache directory with <code>ccache --clear</code> if you
\r
2552 want, unless you plan to keep using an older ccache version.
\r
2557 <div class="sect2">
\r
2558 <h3 id="_new_features_and_improvements_14">New features and improvements</h3>
\r
2559 <div class="ulist"><ul>
\r
2562 ccache now has a “direct mode” where it computes a hash of the source code
\r
2563 (including all included files) and compiler options without running the
\r
2564 preprocessor. By not running the preprocessor, CPU usage is reduced; the
\r
2565 speed is somewhere between 1 and 5 times that of ccache running in
\r
2566 traditional mode, depending on the circumstances. The speedup will be higher
\r
2567 when I/O is fast (e.g., when files are in the disk cache). The direct mode
\r
2568 can be disabled by setting <code>CCACHE_NODIRECT</code>.
\r
2573 Support has been added for rewriting absolute paths to relative paths when
\r
2574 hashing, in order to increase cache hit rate when building the same source
\r
2575 code in different directories even when compiling with <code>-g</code> and when using
\r
2576 absolute include directory paths. This is done by setting the
\r
2577 <code>CCACHE_BASEDIR</code> environment variable to an absolute path that specifies
\r
2578 which paths to rewrite.
\r
2583 Object files are now optionally stored compressed in the cache. The runtime
\r
2584 cost is negligible, and more files will fit in the ccache directory and in
\r
2585 the disk cache. Set <code>CCACHE_COMPRESS</code> to enable object file compression. Note
\r
2586 that you can’t use compression in combination with the hard link feature.
\r
2591 A <code>CCACHE_COMPILERCHECK</code> option has been added. This option tells ccache what
\r
2592 compiler-identifying information to hash to ensure that results retrieved
\r
2593 from the cache are accurate. Possible values are: none (don’t hash anything),
\r
2594 mtime (hash the compiler’s mtime and size) and content (hash the content of
\r
2595 the compiler binary). The default is mtime.
\r
2600 It is now possible to specify extra files whose contents should be included
\r
2601 in the hash sum by setting the <code>CCACHE_EXTRAFILES</code> option.
\r
2606 Added support for Objective-C and Objective-C++. The statistics counter
\r
2607 “not a C/C++ file” has been renamed to “unsupported source language”.
\r
2612 Added support for the <code>-x</code> compiler option.
\r
2617 Added support for long command-line options.
\r
2622 A <code>CACHEDIR.TAG</code> file is now created in the cache directory. See
\r
2623 <a href="http://www.brynosaurus.com/cachedir/">http://www.brynosaurus.com/cachedir/</a>.
\r
2628 Messages printed to the debug log (specified by <code>CCACHE_LOGFILE</code>) have been
\r
2634 You can relax some checks that ccache does in direct mode by setting
\r
2635 <code>CCACHE_SLOPPINESS</code>. See the manual for more information.
\r
2640 <code>CCACHE_TEMPDIR</code> no longer needs to be on the same filesystem as
\r
2641 <code>CCACHE_DIR</code>.
\r
2646 The default value of <code>CCACHE_TEMPDIR</code> has been changed to <code>$CCACHE_DIR/tmp</code>
\r
2647 to avoid cluttering the top directory.
\r
2652 Temporary files that later will be moved into the cache are now created in
\r
2653 the cache directory they will end up in. This makes ccache more friendly to
\r
2654 Linux’s directory layout.
\r
2659 Improved the test suite and added tests for most of the new functionality.
\r
2660 It’s now also possible to specify a subset of tests to run.
\r
2665 Standard error output from the compiler is now only stored in the cache if
\r
2666 it’s non-empty.
\r
2671 If the compiler produces no object file or an empty object file, but gives a
\r
2672 zero exit status (could be due to a file system problem, a buggy program
\r
2673 specified by <code>CCACHE_PREFIX</code>, etc.), ccache copes with it properly.
\r
2678 Added <code>installcheck</code> and <code>distcheck</code> make targets.
\r
2683 Clarified cache size limit options' and cleanup semantics.
\r
2688 Improved display of cache max size values.
\r
2693 The following options are no longer hashed in the preprocessor mode:
\r
2694 <code>-imacros</code>, <code>-imultilib</code>, <code>-iprefix</code>, <code>-iquote</code>, <code>-isysroot</code>, <code>-iwithprefix</code>,
\r
2695 <code>-iwithprefixbefore</code>, <code>-nostdinc</code>, <code>-nostdinc++</code> and <code>-U</code>.
\r
2700 <div class="sect2">
\r
2701 <h3 id="_bug_fixes_32">Bug fixes</h3>
\r
2702 <div class="ulist"><ul>
\r
2705 Various portability improvements.
\r
2710 Improved detection of home directory.
\r
2715 User-defined <code>CPPFLAGS</code> and <code>LDFLAGS</code> are now respected in the Makefile.
\r
2725 Computation of the hash sum has been improved to decrease the risk of hash
\r
2726 collisions. For instance, the compiler options <code>-X -Y</code> and <code>-X-Y</code> previously
\r
2727 contributed equally to the hash sum.
\r
2732 Bail out on too hard compiler options <code>--coverage</code>, <code>-fprofile-arcs</code>,
\r
2733 <code>-fprofile-generate</code>, <code>-fprofile-use</code>, <code>-frepo</code>, <code>-ftest-coverage</code> and
\r
2734 <code>-save-temps</code>. Also bail out on <code>@file</code> style options.
\r
2739 Errors when using multiple <code>-arch</code> compiler options are now noted as
\r
2740 “unsupported compiler option”.
\r
2745 <code>-MD</code>/<code>-MMD</code> options without <code>-MT</code>/<code>-MF</code> are now handled correctly.
\r
2750 The <code>-finput-charset</code> option is now handled correctly.
\r
2755 Added support for <code>-Wp,-MD</code> and <code>-Wp,-MMD</code> options.
\r
2760 The compiler options <code>-Xassembler</code>, <code>-b</code>, <code>-G</code> and <code>-V</code> are now correctly
\r
2761 recognized as taking an argument.
\r
2766 Debug information containing line numbers of predefined and command-line
\r
2767 macros (enabled with the compiler option <code>-g3</code>) will now be correct.
\r
2772 Corrected LRU cleanup handling of object files.
\r
2777 <code>utimes()</code> is now used instead of <code>utime()</code> when available.
\r
2782 Non-writable cache directories are now handled gracefully.
\r
2787 Corrected documentation about sharing the cache directory.
\r
2792 Fixed compilation warnings from GCC 4.3.
\r
2797 The command specified by <code>CCACHE_PREFIX</code> is no longer part of the hash.
\r
2802 Fixed bad memory access spotted by Valgrind.
\r
2807 Fixed a bug in <code>x_realloc</code>.
\r
2812 Freed memory is no longer referenced when compiling a <code>.i</code>/<code>.ii</code> file and
\r
2813 falling back to running the real compiler.
\r
2818 The test suite is now immune to external values of the <code>CCACHE_*</code> environment
\r
2824 Improved detection of recursive invocation.
\r
2829 The ccache binary is now not unconditionally stripped when installing.
\r
2834 Statistics counters are now correctly updated for -E option failures and
\r
2843 <div id="footnotes"><hr /></div>
\r
2845 <div id="footer-text">
\r
2846 Version 3.3.6<br />
\r
2848 2018-01-28 16:21:15 CET
\r
projects / platform / upstream / ccache.git / blob