undefined reference to `std::ios_base::Init::Init()'

Question

I write this code to read 3 files, TM is the size of square matrix, LER the No. of rows of an array and from last value define a non-square matrix of (ler/2)*2

Then... the code read a file with some relations, all are numbers and are assign to C[ler].

Then ... C[ler] is assigned to B[ler/2][2].

Those coordinates, per row, in B[ler/2][2] are assign to a and b.

a and b are the row and the column of the matrix A[tm][tm] where to add 1.

My code crashes and I don't see what the error is.

When I try to compile it, the compiler gcc -g -o MatSim MatSim.cpp prompted:

/usr/include/c++/4.6/iostream:75: undefined reference to `std::ios_base::Init::Init()'
/usr/include/c++/4.6/iostream:75: undefined reference to `std::ios_base::Init::~Init()'
collect2: ld returned 1 exit status

Also, when I try to compile it, the compiler f77 -o MatSim MatSim.cpp prompted:

/tmp/cc6ewlkf.o: In function `__static_initialization_and_destruction_0(int, int)':
MatSim.cpp:(.text+0x17ad4a): undefined reference to `std::ios_base::Init::Init()'
MatSim.cpp:(.text+0x17ad4f): undefined reference to `std::ios_base::Init::~Init()'
collect2: ld returned 1 exit status

Solution

The main problem was a library problem, Compile your code using:

 g++ -g -o MatSim MatSim.cpp -lstdc

Still not working? Install libraries:

sudo apt-get install g++-multilib

Does the compiler give an error? Are you sure you are correct when saying "the compiler gave an exit status of 1" and not the program gave an exit status of 1? — Celeritas, Jun 05 '12 at 23:24
Celeritas, yes, this is what I receive right after I execute any of the compilers [gcc o f77] — Another.Chemist, Jun 05 '12 at 23:27
possible duplicate of [Can't find c++ libraries on unix](http://stackoverflow.com/questions/10867164/cant-find-c-libraries-on-unix) — Jonathan Leffler, Jun 06 '12 at 01:51
Thanks Jonathan Leffler!!!! you and Reinier have enlightment my code and now I can really go forward!!!! — Another.Chemist, Jun 06 '12 at 02:48

score 203 · Accepted Answer · edited Nov 07 '18 at 19:58

203

You can resolve this in several ways:

Use g++ in stead of gcc: g++ -g -o MatSim MatSim.cpp
Add -lstdc++: gcc -g -o MatSim MatSim.cpp -lstdc++
Replace <string.h> by <string>

This is a linker problem, not a compiler issue. The same problem is covered in the question iostream linker error – it explains what is going on.

edited Nov 07 '18 at 19:58

Baum mit Augen

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answered Jun 06 '12 at 01:46

Reinier Torenbeek

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Thanks Reiner... I tried your suggestion and I get: _g++ -g -o MatSim MatSim.cpp -lstdc /usr/bin/ld: cannot find -lstdc collect2: ld returned 1 exit status_ – Another.Chemist Jun 06 '12 at 02:06
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If you go with the extra library option, then you should use `-lstdc++`, not `-lstdc`. But if you use g++, then it is not necessary to add that library. – Reinier Torenbeek Jun 06 '12 at 02:17
Thanks Reinier!!!! you and Jonathan Leffler have enlightment my code and now I can really go forward!!!! – Another.Chemist Jun 06 '12 at 02:48
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I think this is an human error: it is not right to compile c++ code with gcc (instead of g++) (as I was doing wrong myself and googled here :) – Zac Sep 18 '12 at 13:45
I tried to ndk-build to jni directory. I think your answer for one .cpp not for the directory. Do you have solution? – CleanCoder Jul 19 '20 at 11:42

score 7 · Answer 2 · answered Jun 30 '15 at 14:57

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Most of these linker errors occur because of missing libraries.

I added the libstdc++.6.dylib in my Project->Targets->Build Phases-> Link Binary With Libraries.

That solved it for me on Xcode 6.3.2 for iOS 8.3

Cheers!

answered Jun 30 '15 at 14:57

Arjun Shukla

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Thanks for sharing this, man. You just solved my problem. I was trying to compiling a target for unity test in my project using gtest-1.7.0 Framework and Xcode Version 6.3.2. – Eduardo Reis Jul 23 '15 at 20:49

score 2 · Answer 3 · answered May 14 '21 at 12:07

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g++ is equivalent to gcc -xc++ -lstdc++ -shared-libgcc

I was getting a similar error while using sizeof() method. By using g++ or above tags with gcc, the code got compiled.

answered May 14 '21 at 12:07

Deepak Sharma

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undefined reference to `std::ios_base::Init::Init()'

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