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Questions tagged [duplicate-symbol]

99 questions
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Why do C++ member functions defined in a class not produce duplicate symbols, whereas they do in C?

C Example bb.c: #include "bb.h" #include void bb() { printf("aa()...\n"); aa(); } main.c: #include "aa.h" #include "bb.h" int main(int argc, const char** argv) { aa(); bb(); return 0; } aa.h: #ifndef aa_h #define…
magnus
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About linker command failed with exit code 1

I defined namespace "MAPDATA" in a header file(MapData.h) that I have created,and I defined a variable in "MAPDATA". MapData.h namespace MAPDATA{ cocos2d::CCSize MapSizeData; cocos2d::CCSize TileSizeData; int MaxTileXData; int…
user3321541
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the issue with exit code 1 (use -v to see invocation)

I'm having a problem about xcode. Please help me check this issue This is my log from xcode Ld /Users/admin/Library/Developer/Xcode/DerivedData/Management-dbumnvnvxcjatwgwzoxobimmdmvo/Build/Products/Debug-iphonesimulator/Management.app/Management…
iOS dev
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Duplicate symbol in admob static library

In my application i am using libGoogleAdMobAds.a and libGDataTouchStaticLib.a for ads and video sharing on YouTube but it shows the duplicate symbols for architecture i386 for libGDataTouchStaticLib.a(SBJSON.o) How can i avoid this error in my app?
BADRI
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XCode: Duplicate Symbol

I have a C function heightParameter that is a simple tool that I use in a couple of my UIViewControllers. I am declaring this only in my main implementation of each UIViewController subclass (in the .m) above my other functions, so that I didn't…
RileyE
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I am expecting to get duplicate symbol linker error but I don't get it, why?

As far as I know if I define a function in a header file and include that header file in multiple source files(translation units), and link them together I should get duplicate symbol linker error. However I don't get that error having the following…
Erik Nouroyan
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iOS : duplicate symbols for architecture arm64 after pod install

I am getting error when added a new pod. My initial pod file was #platform :ios, '9.0' target 'xxxxxx' do # Comment the next line if you don't want to use dynamic frameworks use_frameworks! # Pods for TPV Plus pod 'IQKeyboardManagerSwift' …
RP89
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Symbols already defined with C++ templates used by static and shared libraries

I have the following problem in my project that contains several modules (I am sorry but I could not find a simpler example) : Module1 defines a full template class ILocatable Module2 defines a class Component Module3 defines a class…
ConanLord
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Where to start troubleshooting with "duplicate symbol"?

I'm learning C++ on Mac and trying to follow along with the SFML Game Development by Example book. Any obvious places to start looking for problems when I get: duplicate symbol __Z2dpi in: …
johnnywz00
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Duplicate Symbols Error - Am I doing my includes right?

I am working on a project with several modules and I'm getting a lot of duplicate symbols errors. I've tried to create a stripped-down version of my project to diagnose the error. I have the code and dependency structure below. Every .hpp and .tpp…
Paradox
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Duplicate symbols, GTMOAuth2 and Facebook SDK for IOS both using SBJSON

I have an app in which I have implemented facebook login. I copied the sources from the facebook sdk directly into my project. Now I need to add google login. This time I have added GTMOAuth2 as a static library. (I also have the source for this too…
gyozo kudor
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Build Error: ld: Duplicate Symbol _canVirate

Below is my build log. I've tried all the usual error-fixing solutions: Deleting build folder, cleaning, restarting Xcode, etc. Ld build/Debug-iphonesimulator/SquirrelGame.app/SquirrelGame normal i386 cd /Users/Student/Desktop/SquirrelGame …
user764362
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Including header library in a new project shows duplicate 'constexpr' error

I have two separate projects. The first project uses the range-v3 header only library and I want to use the range library in my new project too, but including the library shows the duplicate constexpr error. I don't have any duplicate error in my…
M.Mac
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ionic | duplicate symbols error when having cordova-plugin-firebase and cordova-plugin-firebase-analytics installed

I have cordova-plugin-firebase(1.1.3) and cordova-plugin-firebase-analytics(1.0.0) installed in my ionic project. But when I build, I get duplicate symbols error in Xcode like below: ld:110 duplicate symbols for archetecture arm64 clang: error:…
dan.oy
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UITesting with Multiple XCTestCase Class

I am writing UITest cases for my Project. So I want to have multiple files either subclassed to XCTestCase or subclassed to my Other Test Classes. Whenever I create a such File, I am getting the following error. duplicate symbol…
Rahul Singh
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