1 <html> 2 <head> 3 <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> 4 <title>1.The GNU General Public License</title> 5 <link rel="stylesheet" type="text/css" href="vg_basic.css"> 6 <meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7 <link rel="home" href="index.html" title="Valgrind Documentation"> 8 <link rel="up" href="licenses.html" title="GNU Licenses"> 9 <link rel="prev" href="licenses.html" title="GNU Licenses"> 10 <link rel="next" href="license.gfdl.html" title="2.The GNU Free Documentation License"> 11 </head> 12 <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 13 <div><table class="nav" width="100%" cellspacing="3" cellpadding="3" border="0" summary="Navigation header"><tr> 14 <td width="22px" align="center" valign="middle"><a accesskey="p" href="licenses.html"><img src="images/prev.png" width="18" height="21" border="0" alt="Prev"></a></td> 15 <td width="25px" align="center" valign="middle"><a 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ofthislicensedocument,butchangingitisnotallowed.<br> 31 <br> 32 Preamble<br> 33 <br> 34 Thelicensesformostsoftwarearedesignedtotakeawayyour<br> 35 freedomtoshareandchangeit.Bycontrast,theGNUGeneralPublic<br> 36 Licenseisintendedtoguaranteeyourfreedomtoshareandchangefree<br> 37 software--tomakesurethesoftwareisfreeforallitsusers.This<br> 38 GeneralPublicLicenseappliestomostoftheFreeSoftware<br> 39 Foundation'ssoftwareandtoanyotherprogramwhoseauthorscommitto<br> 40 usingit.(SomeotherFreeSoftwareFoundationsoftwareiscoveredby<br> 41 theGNULesserGeneralPublicLicenseinstead.)Youcanapplyitto<br> 42 yourprograms,too.<br> 43 <br> 44 Whenwespeakoffreesoftware,wearereferringtofreedom,not<br> 45 price.OurGeneralPublicLicensesaredesignedtomakesurethatyou<br> 46 havethefreedomtodistributecopiesoffreesoftware(andchargefor<br> 47 thisserviceifyouwish),thatyoureceivesourcecodeorcangetit<br> 48 ifyouwantit,thatyoucanchangethesoftwareorusepiecesofit<br> 49 innewfreeprograms;andthatyouknowyoucandothesethings.<br> 50 <br> 51 Toprotectyourrights,weneedtomakerestrictionsthatforbid<br> 52 anyonetodenyyoutheserightsortoaskyoutosurrendertherights.<br> 53 Theserestrictionstranslatetocertainresponsibilitiesforyouifyou<br> 54 distributecopiesofthesoftware,orifyoumodifyit.<br> 55 <br> 56 Forexample,ifyoudistributecopiesofsuchaprogram,whether<br> 57 gratisorforafee,youmustgivetherecipientsalltherightsthat<br> 58 youhave.Youmustmakesurethatthey,too,receiveorcangetthe<br> 59 sourcecode.Andyoumustshowthemthesetermssotheyknowtheir<br> 60 rights.<br> 61 <br> 62 Weprotectyourrightswithtwosteps:(1)copyrightthesoftware,and<br> 63 (2)offeryouthislicensewhichgivesyoulegalpermissiontocopy,<br> 64 distributeand/ormodifythesoftware.<br> 65 <br> 66 Also,foreachauthor'sprotectionandours,wewanttomakecertain<br> 67 thateveryoneunderstandsthatthereisnowarrantyforthisfree<br> 68 software.Ifthesoftwareismodifiedbysomeoneelseandpassedon,we<br> 69 wantitsrecipientstoknowthatwhattheyhaveisnottheoriginal,so<br> 70 thatanyproblemsintroducedbyotherswillnotreflectontheoriginal<br> 71 authors'reputations.<br> 72 <br> 73 Finally,anyfreeprogramisthreatenedconstantlybysoftware<br> 74 patents.Wewishtoavoidthedangerthatredistributorsofafree<br> 75 programwillindividuallyobtainpatentlicenses,ineffectmakingthe<br> 76 programproprietary.Topreventthis,wehavemadeitclearthatany<br> 77 patentmustbelicensedforeveryone'sfreeuseornotlicensedatall.<br> 78 <br> 79 Theprecisetermsandconditionsforcopying,distributionand<br> 80 modificationfollow.<br> 81 <br> 82 GNUGENERALPUBLICLICENSE<br> 83 TERMSANDCONDITIONSFORCOPYING,DISTRIBUTIONANDMODIFICATION<br> 84 <br> 85 0.ThisLicenseappliestoanyprogramorotherworkwhichcontains<br> 86 anoticeplacedbythecopyrightholdersayingitmaybedistributed<br> 87 underthetermsofthisGeneralPublicLicense.The"Program",below,<br> 88 referstoanysuchprogramorwork,anda"workbasedontheProgram"<br> 89 meanseithertheProgramoranyderivativeworkundercopyrightlaw:<br> 90 thatistosay,aworkcontainingtheProgramoraportionofit,<br> 91 eitherverbatimorwithmodificationsand/ortranslatedintoanother<br> 92 language.(Hereinafter,translationisincludedwithoutlimitationin<br> 93 theterm"modification".)Eachlicenseeisaddressedas"you".<br> 94 <br> 95 Activitiesotherthancopying,distributionandmodificationarenot<br> 96 coveredbythisLicense;theyareoutsideitsscope.Theactof<br> 97 runningtheProgramisnotrestricted,andtheoutputfromtheProgram<br> 98 iscoveredonlyifitscontentsconstituteaworkbasedonthe<br> 99 Program(independentofhavingbeenmadebyrunningtheProgram).<br> 100 WhetherthatistruedependsonwhattheProgramdoes.<br> 101 <br> 102 1.YoumaycopyanddistributeverbatimcopiesoftheProgram's<br> 103 sourcecodeasyoureceiveit,inanymedium,providedthatyou<br> 104 conspicuouslyandappropriatelypublishoneachcopyanappropriate<br> 105 copyrightnoticeanddisclaimerofwarranty;keepintactallthe<br> 106 noticesthatrefertothisLicenseandtotheabsenceofanywarranty;<br> 107 andgiveanyotherrecipientsoftheProgramacopyofthisLicense<br> 108 alongwiththeProgram.<br> 109 <br> 110 Youmaychargeafeeforthephysicalactoftransferringacopy,and<br> 111 youmayatyouroptionofferwarrantyprotectioninexchangeforafee.<br> 112 <br> 113 2.YoumaymodifyyourcopyorcopiesoftheProgramoranyportion<br> 114 ofit,thusformingaworkbasedontheProgram,andcopyand<br> 115 distributesuchmodificationsorworkunderthetermsofSection1<br> 116 above,providedthatyoualsomeetalloftheseconditions:<br> 117 <br> 118 a)Youmustcausethemodifiedfilestocarryprominentnotices<br> 119 statingthatyouchangedthefilesandthedateofanychange.<br> 120 <br> 121 b)Youmustcauseanyworkthatyoudistributeorpublish,thatin<br> 122 wholeorinpartcontainsorisderivedfromtheProgramorany<br> 123 partthereof,tobelicensedasawholeatnochargetoallthird<br> 124 partiesunderthetermsofthisLicense.<br> 125 <br> 126 c)Ifthemodifiedprogramnormallyreadscommandsinteractively<br> 127 whenrun,youmustcauseit,whenstartedrunningforsuch<br> 128 interactiveuseinthemostordinaryway,toprintordisplayan<br> 129 announcementincludinganappropriatecopyrightnoticeanda<br> 130 noticethatthereisnowarranty(orelse,sayingthatyouprovide<br> 131 awarranty)andthatusersmayredistributetheprogramunder<br> 132 theseconditions,andtellingtheuserhowtoviewacopyofthis<br> 133 License.(Exception:iftheProgramitselfisinteractivebut<br> 134 doesnotnormallyprintsuchanannouncement,yourworkbasedon<br> 135 theProgramisnotrequiredtoprintanannouncement.)<br> 136 <br> 137 Theserequirementsapplytothemodifiedworkasawhole.If<br> 138 identifiablesectionsofthatworkarenotderivedfromtheProgram,<br> 139 andcanbereasonablyconsideredindependentandseparateworksin<br> 140 themselves,thenthisLicense,anditsterms,donotapplytothose<br> 141 sectionswhenyoudistributethemasseparateworks.Butwhenyou<br> 142 distributethesamesectionsaspartofawholewhichisaworkbased<br> 143 ontheProgram,thedistributionofthewholemustbeonthetermsof<br> 144 thisLicense,whosepermissionsforotherlicenseesextendtothe<br> 145 entirewhole,andthustoeachandeverypartregardlessofwhowroteit.<br> 146 <br> 147 Thus,itisnottheintentofthissectiontoclaimrightsorcontest<br> 148 yourrightstoworkwrittenentirelybyyou;rather,theintentisto<br> 149 exercisetherighttocontrolthedistributionofderivativeor<br> 150 collectiveworksbasedontheProgram.<br> 151 <br> 152 Inaddition,mereaggregationofanotherworknotbasedontheProgram<br> 153 withtheProgram(orwithaworkbasedontheProgram)onavolumeof<br> 154 astorageordistributionmediumdoesnotbringtheotherworkunder<br> 155 thescopeofthisLicense.<br> 156 <br> 157 3.YoumaycopyanddistributetheProgram(oraworkbasedonit,<br> 158 underSection2)inobjectcodeorexecutableformunderthetermsof<br> 159 Sections1and2aboveprovidedthatyoualsodooneofthefollowing:<br> 160 <br> 161 a)Accompanyitwiththecompletecorrespondingmachine-readable<br> 162 sourcecode,whichmustbedistributedunderthetermsofSections<br> 163 1and2aboveonamediumcustomarilyusedforsoftwareinterchange;or,<br> 164 <br> 165 b)Accompanyitwithawrittenoffer,validforatleastthree<br> 166 years,togiveanythirdparty,forachargenomorethanyour<br> 167 costofphysicallyperformingsourcedistribution,acomplete<br> 168 machine-readablecopyofthecorrespondingsourcecode,tobe<br> 169 distributedunderthetermsofSections1and2aboveonamedium<br> 170 customarilyusedforsoftwareinterchange;or,<br> 171 <br> 172 c)Accompanyitwiththeinformationyoureceivedastotheoffer<br> 173 todistributecorrespondingsourcecode.(Thisalternativeis<br> 174 allowedonlyfornoncommercialdistributionandonlyifyou<br> 175 receivedtheprograminobjectcodeorexecutableformwithsuch<br> 176 anoffer,inaccordwithSubsectionbabove.)<br> 177 <br> 178 Thesourcecodeforaworkmeansthepreferredformoftheworkfor<br> 179 makingmodificationstoit.Foranexecutablework,completesource<br> 180 codemeansallthesourcecodeforallmodulesitcontains,plusany<br> 181 associatedinterfacedefinitionfiles,plusthescriptsusedto<br> 182 controlcompilationandinstallationoftheexecutable.However,asa<br> 183 specialexception,thesourcecodedistributedneednotinclude<br> 184 anythingthatisnormallydistributed(ineithersourceorbinary<br> 185 form)withthemajorcomponents(compiler,kernel,andsoon)ofthe<br> 186 operatingsystemonwhichtheexecutableruns,unlessthatcomponent<br> 187 itselfaccompaniestheexecutable.<br> 188 <br> 189 Ifdistributionofexecutableorobjectcodeismadebyoffering<br> 190 accesstocopyfromadesignatedplace,thenofferingequivalent<br> 191 accesstocopythesourcecodefromthesameplacecountsas<br> 192 distributionofthesourcecode,eventhoughthirdpartiesarenot<br> 193 compelledtocopythesourcealongwiththeobjectcode.<br> 194 <br> 195 4.Youmaynotcopy,modify,sublicense,ordistributetheProgram<br> 196 exceptasexpresslyprovidedunderthisLicense.Anyattempt<br> 197 otherwisetocopy,modify,sublicenseordistributetheProgramis<br> 198 void,andwillautomaticallyterminateyourrightsunderthisLicense.<br> 199 However,partieswhohavereceivedcopies,orrights,fromyouunder<br> 200 thisLicensewillnothavetheirlicensesterminatedsolongassuch<br> 201 partiesremaininfullcompliance.<br> 202 <br> 203 5.YouarenotrequiredtoacceptthisLicense,sinceyouhavenot<br> 204 signedit.However,nothingelsegrantsyoupermissiontomodifyor<br> 205 distributetheProgramoritsderivativeworks.Theseactionsare<br> 206 prohibitedbylawifyoudonotacceptthisLicense.Therefore,by<br> 207 modifyingordistributingtheProgram(oranyworkbasedonthe<br> 208 Program),youindicateyouracceptanceofthisLicensetodoso,and<br> 209 allitstermsandconditionsforcopying,distributingormodifying<br> 210 theProgramorworksbasedonit.<br> 211 <br> 212 6.EachtimeyouredistributetheProgram(oranyworkbasedonthe<br> 213 Program),therecipientautomaticallyreceivesalicensefromthe<br> 214 originallicensortocopy,distributeormodifytheProgramsubjectto<br> 215 thesetermsandconditions.Youmaynotimposeanyfurther<br> 216 restrictionsontherecipients'exerciseoftherightsgrantedherein.<br> 217 Youarenotresponsibleforenforcingcompliancebythirdpartiesto<br> 218 thisLicense.<br> 219 <br> 220 7.If,asaconsequenceofacourtjudgmentorallegationofpatent<br> 221 infringementorforanyotherreason(notlimitedtopatentissues),<br> 222 conditionsareimposedonyou(whetherbycourtorder,agreementor<br> 223 otherwise)thatcontradicttheconditionsofthisLicense,theydonot<br> 224 excuseyoufromtheconditionsofthisLicense.Ifyoucannot<br> 225 distributesoastosatisfysimultaneouslyyourobligationsunderthis<br> 226 Licenseandanyotherpertinentobligations,thenasaconsequenceyou<br> 227 maynotdistributetheProgramatall.Forexample,ifapatent<br> 228 licensewouldnotpermitroyalty-freeredistributionoftheProgramby<br> 229 allthosewhoreceivecopiesdirectlyorindirectlythroughyou,then<br> 230 theonlywayyoucouldsatisfybothitandthisLicensewouldbeto<br> 231 refrainentirelyfromdistributionoftheProgram.<br> 232 <br> 233 Ifanyportionofthissectionisheldinvalidorunenforceableunder<br> 234 anyparticularcircumstance,thebalanceofthesectionisintendedto<br> 235 applyandthesectionasawholeisintendedtoapplyinother<br> 236 circumstances.<br> 237 <br> 238 Itisnotthepurposeofthissectiontoinduceyoutoinfringeany<br> 239 patentsorotherpropertyrightclaimsortocontestvalidityofany<br> 240 suchclaims;thissectionhasthesolepurposeofprotectingthe<br> 241 integrityofthefreesoftwaredistributionsystem,whichis<br> 242 implementedbypubliclicensepractices.Manypeoplehavemade<br> 243 generouscontributionstothewiderangeofsoftwaredistributed<br> 244 throughthatsysteminrelianceonconsistentapplicationofthat<br> 245 system;itisuptotheauthor/donortodecideifheorsheiswilling<br> 246 todistributesoftwarethroughanyothersystemandalicenseecannot<br> 247 imposethatchoice.<br> 248 <br> 249 Thissectionisintendedtomakethoroughlyclearwhatisbelievedto<br> 250 beaconsequenceoftherestofthisLicense.<br> 251 <br> 252 8.Ifthedistributionand/oruseoftheProgramisrestrictedin<br> 253 certaincountrieseitherbypatentsorbycopyrightedinterfaces,the<br> 254 originalcopyrightholderwhoplacestheProgramunderthisLicense<br> 255 mayaddanexplicitgeographicaldistributionlimitationexcluding<br> 256 thosecountries,sothatdistributionispermittedonlyinoramong<br> 257 countriesnotthusexcluded.Insuchcase,thisLicenseincorporates<br> 258 thelimitationasifwritteninthebodyofthisLicense.<br> 259 <br> 260 9.TheFreeSoftwareFoundationmaypublishrevisedand/ornewversions<br> 261 oftheGeneralPublicLicensefromtimetotime.Suchnewversionswill<br> 262 besimilarinspirittothepresentversion,butmaydifferindetailto<br> 263 addressnewproblemsorconcerns.<br> 264 <br> 265 Eachversionisgivenadistinguishingversionnumber.IftheProgram<br> 266 specifiesaversionnumberofthisLicensewhichappliestoitand"any<br> 267 laterversion",youhavetheoptionoffollowingthetermsandconditions<br> 268 eitherofthatversionorofanylaterversionpublishedbytheFree<br> 269 SoftwareFoundation.IftheProgramdoesnotspecifyaversionnumberof<br> 270 thisLicense,youmaychooseanyversioneverpublishedbytheFreeSoftware<br> 271 Foundation.<br> 272 <br> 273 10.IfyouwishtoincorporatepartsoftheProgramintootherfree<br> 274 programswhosedistributionconditionsaredifferent,writetotheauthor<br> 275 toaskforpermission.ForsoftwarewhichiscopyrightedbytheFree<br> 276 SoftwareFoundation,writetotheFreeSoftwareFoundation;wesometimes<br> 277 makeexceptionsforthis.Ourdecisionwillbeguidedbythetwogoals<br> 278 ofpreservingthefreestatusofallderivativesofourfreesoftwareand<br> 279 ofpromotingthesharingandreuseofsoftwaregenerally.<br> 280 <br> 281 NOWARRANTY<br> 282 <br> 283 11.BECAUSETHEPROGRAMISLICENSEDFREEOFCHARGE,THEREISNOWARRANTY<br> 284 FORTHEPROGRAM,TOTHEEXTENTPERMITTEDBYAPPLICABLELAW.EXCEPTWHEN<br> 285 OTHERWISESTATEDINWRITINGTHECOPYRIGHTHOLDERSAND/OROTHERPARTIES<br> 286 PROVIDETHEPROGRAM"ASIS"WITHOUTWARRANTYOFANYKIND,EITHEREXPRESSED<br> 287 ORIMPLIED,INCLUDING,BUTNOTLIMITEDTO,THEIMPLIEDWARRANTIESOF<br> 288 MERCHANTABILITYANDFITNESSFORAPARTICULARPURPOSE.THEENTIRERISKAS<br> 289 TOTHEQUALITYANDPERFORMANCEOFTHEPROGRAMISWITHYOU.SHOULDTHE<br> 290 PROGRAMPROVEDEFECTIVE,YOUASSUMETHECOSTOFALLNECESSARYSERVICING,<br> 291 REPAIRORCORRECTION.<br> 292 <br> 293 12.INNOEVENTUNLESSREQUIREDBYAPPLICABLELAWORAGREEDTOINWRITING<br> 294 WILLANYCOPYRIGHTHOLDER,ORANYOTHERPARTYWHOMAYMODIFYAND/OR<br> 295 REDISTRIBUTETHEPROGRAMASPERMITTEDABOVE,BELIABLETOYOUFORDAMAGES,<br> 296 INCLUDINGANYGENERAL,SPECIAL,INCIDENTALORCONSEQUENTIALDAMAGESARISING<br> 297 OUTOFTHEUSEORINABILITYTOUSETHEPROGRAM(INCLUDINGBUTNOTLIMITED<br> 298 TOLOSSOFDATAORDATABEINGRENDEREDINACCURATEORLOSSESSUSTAINEDBY<br> 299 YOUORTHIRDPARTIESORAFAILUREOFTHEPROGRAMTOOPERATEWITHANYOTHER<br> 300 PROGRAMS),EVENIFSUCHHOLDEROROTHERPARTYHASBEENADVISEDOFTHE<br> 301 POSSIBILITYOFSUCHDAMAGES.<br> 302 <br> 303 ENDOFTERMSANDCONDITIONS<br> 304 <br> 305 HowtoApplyTheseTermstoYourNewPrograms<br> 306 <br> 307 Ifyoudevelopanewprogram,andyouwantittobeofthegreatest<br> 308 possibleusetothepublic,thebestwaytoachievethisistomakeit<br> 309 freesoftwarewhicheveryonecanredistributeandchangeundertheseterms.<br> 310 <br> 311 Todoso,attachthefollowingnoticestotheprogram.Itissafest<br> 312 toattachthemtothestartofeachsourcefiletomosteffectively<br> 313 conveytheexclusionofwarranty;andeachfileshouldhaveatleast<br> 314 the"copyright"lineandapointertowherethefullnoticeisfound.<br> 315 <br> 316 <onelinetogivetheprogram'snameandabriefideaofwhatitdoes.><br> 317 Copyright(C)<year><nameofauthor><br> 318 <br> 319 Thisprogramisfreesoftware;youcanredistributeitand/ormodify<br> 320 itunderthetermsoftheGNUGeneralPublicLicenseaspublishedby<br> 321 theFreeSoftwareFoundation;eitherversion2oftheLicense,or<br> 322 (atyouroption)anylaterversion.<br> 323 <br> 324 Thisprogramisdistributedinthehopethatitwillbeuseful,<br> 325 butWITHOUTANYWARRANTY;withouteventheimpliedwarrantyof<br> 326 MERCHANTABILITYorFITNESSFORAPARTICULARPURPOSE.Seethe<br> 327 GNUGeneralPublicLicenseformoredetails.<br> 328 <br> 329 YoushouldhavereceivedacopyoftheGNUGeneralPublicLicensealong<br> 330 withthisprogram;ifnot,writetotheFreeSoftwareFoundation,Inc.,<br> 331 51FranklinStreet,FifthFloor,Boston,MA02110-1301USA.<br> 332 <br> 333 Alsoaddinformationonhowtocontactyoubyelectronicandpapermail.<br> 334 <br> 335 Iftheprogramisinteractive,makeitoutputashortnoticelikethis<br> 336 whenitstartsinaninteractivemode:<br> 337 <br> 338 Gnomovisionversion69,Copyright(C)yearnameofauthor<br> 339 GnomovisioncomeswithABSOLUTELYNOWARRANTY;fordetailstype`showw'.<br> 340 Thisisfreesoftware,andyouarewelcometoredistributeit<br> 341 undercertainconditions;type`showc'fordetails.<br> 342 <br> 343 Thehypotheticalcommands`showw'and`showc'shouldshowtheappropriate<br> 344 partsoftheGeneralPublicLicense.Ofcourse,thecommandsyouusemay<br> 345 becalledsomethingotherthan`showw'and`showc';theycouldevenbe<br> 346 mouse-clicksormenuitems--whateversuitsyourprogram.<br> 347 <br> 348 Youshouldalsogetyouremployer(ifyouworkasaprogrammer)oryour<br> 349 school,ifany,tosigna"copyrightdisclaimer"fortheprogram,if<br> 350 necessary.Hereisasample;alterthenames:<br> 351 <br> 352 Yoyodyne,Inc.,herebydisclaimsallcopyrightinterestintheprogram<br> 353 `Gnomovision'(whichmakespassesatcompilers)writtenbyJamesHacker.<br> 354 <br> 355 <signatureofTyCoon>,1April1989<br> 356 TyCoon,PresidentofVice<br> 357 <br> 358 ThisGeneralPublicLicensedoesnotpermitincorporatingyourprograminto<br> 359 proprietaryprograms.Ifyourprogramisasubroutinelibrary,youmay<br> 360 consideritmoreusefultopermitlinkingproprietaryapplicationswiththe<br> 361 library.Ifthisiswhatyouwanttodo,usetheGNULesserGeneral<br> 362 PublicLicenseinsteadofthisLicense.<br> 363 <br> 364 </p></div> 365 </div> 366 <div> 367 <br><table class="nav" width="100%" cellspacing="3" cellpadding="2" border="0" summary="Navigation footer"> 368 <tr> 369 <td rowspan="2" width="40%" align="left"> 370 <a accesskey="p" href="licenses.html"><<GNU Licenses</a></td> 371 <td width="20%" align="center"><a accesskey="u" href="licenses.html">Up</a></td> 372 <td rowspan="2" width="40%" align="right"><a accesskey="n" href="license.gfdl.html">2.The GNU Free Documentation License>></a> 373 </td> 374 </tr> 375 <tr><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td></tr> 376 </table> 377 </div> 378 </body> 379 </html> 380