c++ - Eclipse CDT C++11_C++0x support - Stack Overflow

8/1/2014 c++ - Eclipse CDT C++11/C++0x support - Stack Overflow

http://stackoverflow.com/questions/9131763/eclipse-cdt-c11-c0x-support 1/6

Takethe2minutetour

Nick2,281 1 13 28

10Answers

Kazark2,453 3 14 44

CarstenGreiner1,401 1 6 14

Eclipse3.7.1CDT1.4.1GCC4.6.2

ThisisanexampleofapieceofC++11code:

autotext=std::unique_ptr(newchar[len])

TheEclipseeditorcomplainsabout:

Function'unique_ptr'couldnotberesolved

TheMakefilecompilationworksfine.HowtomakeEclipsestopcomplainingaboutthesesortoferrors?

c++ eclipse c++11 cdt

editedFeb6'12at7:44 askedFeb3'12at16:13

9 Attheveryleast,itshouldbe std::unique_ptrCubbiFeb3'12at16:16

Notsurethatiscorrectchar[]isconvertibletochar*andunique_ptrisapointertochar,likechar*Nick Feb3'12at16:24

1 Wouldn't unique_ptrcall delete,whichiswrongsinceitwascreatedwith new[]?DietrichEppFeb3'12at17:44

4 @Nick:No,he'sright.Thewayyouwroteitwillcause deletetobecalled,whenyouneed delete[]called.The unique_ptrassumesthatit'sgettingapointer,whichgetsdeletedwith delete.unique_ptrexpectsanarray,whichgetsdeletedwith delete[]correctly.NicolBolasFeb3'12at17:47

Related:stackoverflow.com/q/8889260/636019,stackoverflow.com/q/8763937/636019,stackoverflow.com/q/8564544/636019,stackoverflow.com/q/8312854/636019ildjarnFeb3'12at19:04

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IfoundthisarticleintheEclipseforum,justfollowedthosestepsanditworksforme.IamusingEclipseIndigo201106150604onWindowswithaCygwinsetup.

MakeanewC++projectDefaultoptionsforeverythingOncecreated,rightclicktheprojectandgoto"Properties"C/C++Build>Settings>ToolSettings>GCCC++Compiler>Miscellaneous>OtherFlags.Putstd=c++0xattheend....insteadofGCCC++CompilerIhavealsoCygwincompilerC/C++General>PathsandSymbols>Symbols>GNUC++.Click"Add..."andpaste__GXX_EXPERIMENTAL_CXX0X__(ensuretoappendandprependtwounderscores)into"Name"andleave"Value"blank.HitApply,dowhateveritasksyoutodo,thenhitOK.

ThereisadescriptionofthisintheEclipseFAQnowaswell:EclipseFAQ/C++11Features.

editedDec19'12at23:16 answeredFeb3'12at20:33

2 @EdHnottrue.CDThasitsownc++parser.thanksgodJohannesSchaublitbFeb4'12at21:53

2 Yey,itworked!But,makesuretoprepend&appendtwounderscorestoGXX_EXPERIMENTAL_CXX0XI

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communitywiki14revsJohanLundberg

willacceptthisinthemeantime Nick Feb6'12at7:49

3 Didthisremovespuriouseditorerrors?Ihavenoproblemwithcompiling,andnewstdtypesarerecognised,butIcan'tgetridofeditorsyntaxerrorsforrangebasedforloopsandrvaluereferences &&.juanchopanzaMay3'12at13:09

3 Thenaturalfollowupquestionnowbecomes:canweoptimizeourworkflowbysavingthesespecificC++ProjectSettingsintoanewEclipseProjecttemplatesay"C++11Project"?NordlwMay21'12at21:34

19 Note:foranyonelookingfortheanswerforJuno,thisdoesnotwork .ChristopherDec31'12at16:37

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There'snowanewwaytosolvethiswithouttheGXX_EXPERIMENTALhack.

Formostrecentversions:(CurrentlyJunoandKepler):

UndernewerversionsofJunothesettingsarelocatedat Projectpropierties>C/C++General>PreprocessorIncludePaths,Macrosetc.>tabProviders>CDTGCCBuiltinCompilerSettings().

Olderversions2012/2013:

1. UnderC/C++Build(atprojectsettings),findthePreprocessorInclude PathandgototheProvidersTab.DeselectallexceptCDTGCCBuiltinCompilerSettings.ThenuntagSharesettingsentries.Addtheoptionstd=c++11tothetextboxcalledCommandtogetcompilerspecs.

2. Gotopathsandsymbols.UnderSymbols,clickrestoredefaults,andthenapply.

Notes:

Eclipseispickyabouthittingapply,youneedtodoiteverytimeyouleaveasettingstab.

[Selfpromotion]:Iwrotemyownmoredetailedinstructionsbasedontheabove.http://scrupulousabstractions.tumblr.com/post/36441490955/eclipsemingwbuilds

Thankstotheuser Nobodyathttp://stackoverflow.com/a/13635080/1149664

editedNov29'13at19:24

2 Thankyoubutitdidn'thelpmetosolvec++11references.Programcompilescorrectly,buteclipsecannotresolvethem.WhenIcheck"array", #ifndef__GXX_EXPERIMENTAL_CXX0X__returnstrueandcodebelowitisnotparsed.WhenIadd __GXX_EXPERIMENTAL_CXX0X__toprojectsymbols,arraygetsresolvedbutmyproject'sreferencesgetsmessedup.Whatmightbetheproblemhere?HalilKaskavalciDec20'12at16:10

Notsurewhatyoumeanbycheckarray.Didyoutrytofollowtheinstructionsonmyblog?JohanLundbergDec20'12at16:22

1 Ithinkitisabug.Ireproduceditlikethis:Opennewproject.Enablec++11features.Addarandomclasswithapublicvariable.Createvectorofthisrandomclass.Gettheiterator.Trytoaccesspublicvariable.EithermyworkspaceiscorruptedorthereisabuginEclipsethatcannotparsethis.HalilKaskavalciDec20'12at17:00

1 @HalilKaskavalciIfoundthissamebug.IfIsettheeditorforc++11,iteratorscan'tresolve.IfIdon't,std::unique_ptrcan'tresolve.Reallyannoying,sinceIuseboth.KianDec20'12at22:24

1 @KianIreportedthebug.bugs.eclipse.org/bugs/show_bug.cgi?id=397027.ItisquiteannoyingandIstartedtouseboostlibraries,theydon'tproducetheerror:)HalilKaskavalciDec20'12at23:19

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Forthelatest(Juno)eclipsecdtthefollowingworkedforme,noneedtodeclare__GXX_EXPERIMENTAL_CXX0X__onmyself.ThisworksforthetheCDTindexerandasparameterforthecompiler:

"yourprojectname">rightclick>properties:

C/C++General>PreprocessorIncludePaths,Macrosetc.>switchtothetabnamed"Providers":

for"Configuration"select"Release"(andafterwards"debug")



Andreas160 1 6

ravwojdyla465 4 6

switchoffallprovidersandjustselect"CDTGCCBuiltinCompilerSettings"

uncheck"Sharesettingentriesbetweenprojects(globalprovider)"

inthe"Commandtogetcompilerspecs:"add"std=c++11"withoutthequotes(mayworkwithquotestoo)

hitapplyandclosetheoptions

rebuildtheindex

Nowallthec++11relatedstuffshouldberesolvedcorrectlybytheindexer.

win7x64,latestofficialeclipsewithcdtmingww64gcc4.7.2fromthemingwbuildsprojectonsourceforge

answeredMar10'13at11:34

stillgettingsameerroneouseditorwarnings,asinType'std::thread'couldnotberesolvedeventhoughitcompilesandexecutesOKScottStenslandMay31'13at11:27

uneedtocompileoncewiththenewsettings,sotheparserwill"learn"thatthestd=c++11flagissetAndreasJun11'13at9:16

Ican'tyetcommentsoamwritingmyownanswer:

It'srelatedto __GXX_EXPERIMENTAL_CXX0X__andit'svalidforEclipseJunoandCDT8.x.

SomepartsofthisanswerarealreadycoveredinotheranswersbutIwantittobecoherent.

Tomakeitpossibletobuildusingstdc++11,onehavetoaddspecificflagforcompiler.Youcandothatviaprojectproperties.Tomodifyprojectproperties RMBand Projectpropertiesor ALT+ENTER.ThenC/C++Build>Settings>ToolSettings>GCCC++Compiler>Miscellaneous>OtherFlags.Putstd=c++11attheendofline,forGCCitwilllooksomethinglike: cfmessagelength=0std=c++11.Byaddingstdc++11flagcompiler(GCC)willdeclare __GXX_EXPERIMENTAL_CXX0X__byitself.

AtthispointyoucanbuildprojectusingallthegoodnessofC++11.

TheproblemisthatEclipsehasit'sownparsertocheckforerrorsthat'swhyyou'restillgettingallthenastyerrorsinEclipseeditor,whileatthesametimeyoucanbuildandrunprojectwithoutany.Thereisawaytosolvethisproblembyexplicitlydeclaring __GXX_EXPERIMENTAL_CXX0X__flagfortheproject,onecandothat(justlikeCarstenGreinersaid):C/C++General>PathsandSymbols>Symbols>GNUC++.Click"Add..."andpast __GXX_EXPERIMENTAL_CXX0X__(ensuretoappendandprependtwounderscores)into"Name"andleave"Value"blank.AndnowistheextrapartIwantedtocoverincommenttothefirstanswer,goto:C/C++General>PreprocessorIncludePathMacrosetc.>Providers,andSelect CDTManagedBuildSettingEntriesthenclickAPPLYandgobacktoEntriestab,underGNUC++thereshouldbenowCDTManagedBuildSettingEntriescheckifinsidethereisdefined __GXX_EXPERIMENTAL_CXX0X__ifitis>APPLYandrebuildindexyoushouldbefineatthispoint.

answeredFeb26'13at20:23

ForEclipseCDTKeplerwhatworkedformetogetridofstd::threadunresolvedsymbolis:

1. GotoPreferences>C/C++>Build>Settings

2. SelecttheDiscoverytab

3. SelectCDTGCCBuiltinCompilerSettings[Shared]

4. Addthestd=c++11tothe"Commandtogetthecompilerspecs:"fieldsuchas:

${COMMAND}EPvdDstd=c++11${INPUTS}

1. OkandRebuildIndexfortheproject.

Addingstd=c++11toprojectProperties/C/C++Build>Settings>ToolSettings>GCCC++Compiler>Miscellaneous>OtherFlagswasn'tenoughforKepler,howeveritwasenoughforolderversionssuchasHelios.

answeredFeb24at23:33

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user334891551 1 1

Trismegistos588 3 12

InstructionForEclipseCDT4.4Luna

First,beforecreatingproject,configureEclipsesyntaxparser:

Window> Preferences> C/C++> Settings> Discovery> CDTGCCBuildinCompilerSettings

inthetextboxentitled Commandtogetcompilerspecsappend std=c++11

Nowyoucancreateproject,configurationdependsonwhatkindofprojectyoucreated:

Forprojectcreatedas:File>New>Project>C/C++>C++Project

Rightclickoncreatedprojectandopen

Properties> Settings> ToolSettings> GCCC++Compiler> Dialect

put std=c++11intotextboxentitled otherdialectflags

ForCMakeproject

Generateeclipseprojectfiles

cmakeG"EclipseCDT4UnixMakefiles"DCMAKE_BUILD_TYPE=Debug..

Thenimportgenerateddirectorytoeclipseasstandardeclipseproject.Rightclickprojectandopen

Properties> C/C++General> PreprocessorIncludePaths,Marcosetc.>Providers

enable CDTGCCBuildinCompilerSettingsandmoveithigherthen ContributedPathEntryContainers(Thisisimportant)

LastCommonStep

recompile,reganerate Project> C/C++IndexandrestartEclipse.

editedJul3at20:20 answeredJul3at19:12

Ihadseveralissuestoo(Ubuntu13.0464bit,g++4.8,eclipseJuno3.8.1,CDT6.0.0).Alotofthingsarementionedabove,sorrytorepeatthose,butadditionallyIhadproblemsutilizing

std::thread

aspartofc++11(addingpthreadforthelinkersolvesthatissue).Anyway,finallythesesettingsworkedfine:

Project>Properties>C/C++Build>Settings>Miscellaneous.Addthe

std=c++11

flagfortheGCCandG++compilers.ClickApply.

Forthelinker,samewindow,Miscellaneous,Linkerflags,addedthe

pthread

flag.Sharedlibrarysettings,Sharedobjectname,addthe

Wl,noasneeded

flagtoo.ClickApply.

C/C++General>Pathsandsymbols>SymbolsTAB,GNUC++selected,Addthe

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OlaAronsson21 2

Jerk3199 8

SameeraChanaka1

__GXX_EXPERIMENTAL_CXX0X__

(novalue)

flag.ClickApply.

C/C++General>PreprocessorIncludepaths..>Providerstab:check

CDTGCCbuiltinCompilerSettings

andfor"Commandtogetcompilerspecs",addthe

std=c++11

flag.UncheckShare.ClickApply.

CDTManagagesBuildSettingEntries,checkthistoo.Uncheckthetwoothers.ClickApply.

GoingbacktotheEntriestab,GNUC++CDTManagagesBuildSettingEntries,youshouldnowseeyouradded

__GXX_EXPERIMENTAL_CXX0X__

entry.

That'sit.Whencoding,typing

std::

cannowautocompletethethreadclassforinstance,buildsshouldworkfineandthereshouldbeno

std::system_error'what():Enablemultithreadingtousestd::thread:Operationnotpermitted

atruntime.

editedJan25at22:52 answeredJan25at22:42

Itwasthe Project>Properties>C/C++Build>Settings>Miscellaneousstepthatworkedforme.Thanksabunch:DJake88Feb14at16:19

IhadthesameproblemonmyEclipseJuno.Thesestepssolvedtheproblem:

Goto Project>Properties>C/C++General>PathandSymbols>Tab[Symbols].Addthesymbol:__cpluspluswiththevalue201103L

answeredMar8at17:21

rightclicktheprojectandgoto"Properties"C/C++Build>Settings>ToolSettings>GCCC++Compiler>Miscellaneous>OtherFlags.PutlmattheendofotherflagstextboxandOK.

answeredJul25'13at1:21

WhatversionofEclipseisthis?BraiamJul25'13at1:45

NeitherthehacknorthecleanerversionworkforIndigo.Thehackisignored,andtherequiredconfigurationoptionsaremissing.Fornoapparentreason,buildstartedworkingafternotworkingandnotprovidinganyusefulreasonwhy.Atleastfromthecommandline,Igetreproducibleresults.

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JerryMiller109 1 5

answeredMay5at16:36

Nottheansweryou'relookingfor?Browseotherquestionstagged c++ eclipse

c++11 cdt oraskyourownquestion.

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