I have a simulink model created with Matlab 2013, which was working fine in the rapid accelerator mode on Debian 7 machine.
However, after an update to Debian 8 (and Matlab 2013) the simulation fails with a compilation warning and an error:
Warning:
matlab Warning: You are using gcc version 4.9.2 The version currently supported with MEX is 4.4.x. For a list of currently supported compilers see:...
Fatal error:
matlab 2013 /usr/bin/ld: cannot find -lstdc++collect2: error: ld returned 1 exit statusmex: link of ' "TestModel_sfun.mexa64"' failed.gmake Error 1
A related post is here, which is also a failure at the link step. However the solution, which for me is to install the package libstdc++-4.8-dev did not help, so something else seems to be missing.
Solution: install the build-essential package.
Turns out a colleague had the same problem earlier.
Related
Trying to run codegen with MATLAB 2019a on a linux box and got the error:
... /lib64/libstdc++.so.6: version: 'GLIBCXX_3.4_20' not found ...
I have /lib64/libstdc++.so.6, just (apparently) not the right version. How can I resolve this?
Here is a list of supported compilers for your version of MATLAB.
Apparently MATLAB R2019a on Linux requires GCC 6.3.x. Make sure you have that version installed.
Ive installed matlab,gcc and CUDA toolkit on ubuntu .to use mexcuda .
but when i compile i get the following errors and i cant find any references on them anywhere .
Error using mex
/tmp/mex_42185702054896_15548/testmem04.o: In function `mexFunction':
tmpxft_00003e3a_00000000-5_testmem04.compute_70.cudafe1.cpp:(.text+0x152): undefined reference
to `__cudaPushCallConfiguration'
/tmp/mex_42185702054896_15548/testmem04.o: In function `__device_stub__Z9MulKernelPhPi(unsigned
char*, int*)':
tmpxft_00003e3a_00000000-5_testmem04.compute_70.cudafe1.cpp:(.text+0x35e): undefined reference
to `__cudaPopCallConfiguration'
collect2: error: ld returned 1 exit status
please note that when i first installed matlab, cuda 10 (my current version) was not supported by it , ive encountered the same thing when i installed matlab on windows , and fixed it by commenting a line in file "nvcc_g++.xml" and it works . when i did this in ubuntu matlab,matlab now detects the nvcc compiler but i get the previous error .
i realize "undefined reference errors " are linker errors , what should i do here ? i tried linking to cuda library but it didnt work .
For mexcuda, it is crucial that you match the CUDA toolkit to the version shipping with your installation of MATLAB (and Parallel Computing Toolbox). This is because Parallel Computing Toolbox ships a selection of libraries from the CUDA toolkit, and expects to be able to link against them. If you use the wrong version of the CUDA toolkit, all sorts of things can go wrong.
To check the appropriate version of the CUDA toolkit, look at the CUDA ToolkitVersion Version showing in the output from gpuDevice.
(Note that it is only the toolkit version that needs to match with MATLAB & PCT - it's almost always fine to get the latest driver).
For more details, see my answer https://uk.mathworks.com/matlabcentral/answers/432360-after-uninstalling-cuda-toolkit-still-matlab-responds-for-gpudevice over there on MATLAB Answers.
I am installing aerospike-server(https://github.com/aerospike/aerospike-server) on centos6.3 from source, when $make (GCC 4.7.2), i meet this error:
ld terminated with signal 11 segmentation fault core dumped
/usr/bin/ld: Dwarf Error: Invalid or unhandled Form value: 32.
make[2]: *** [../../target/Linux-x86_64/bin/asd] Error 1.
...
what should i try? can someone help me? thanks!
I used all the default tools in centos 6.3 and could build aerospike successfully from source.
The default gcc in centos 6.3 is 4.4.7. Any reason why you are using a different gcc ? Make sure you are using the correct binutils corresponding to your gcc version.
I have tried to install the libsvm package with
mex -setup
(since "make" resulted in an error). This was followed by one choice for a compiler, so I chose "1".
Afterwards I typed in "make" got the following error though:
xcrun: error: SDK "macosx10.7" cannot be located
clang: warning: no such sysroot directory: '-mmacosx-version-min=10.7'
libsvmread.c:1:10: fatal error: 'stdio.h' file not found
#include <stdio.h>
^
1 error generated.
mex: compile of ' "libsvmread.c"' failed.
If make.m fails, please check README about detailed instructions.
What can I do?
I think the following answer from the matlab support might be helpful (http://www.mathworks.com/matlabcentral/answers/103904-can-i-use-xcode-5-as-my-c-or-c-compiler-in-matlab-8-1-r2013a-or-matlab-8-2-r2013b):
The Mac OS X 10.7 SDK, available in Xcode 4.1 through 4.6, is used by
MEX and related capabilities. This SDK is no longer available in Xcode
5, resulting in errors similar to the following when compiling:
xcodebuild: error: SDK "macosx10.7" cannot be located.
xcrun: error: unable to find utility "clang", not a developer tool or
in PATH
The simplest solution is to avoid updating Xcode to version 5 if you
are using R2013a or R2013b. If you need Xcode 5, or you have already
irreversibly upgraded to it, you can update MEX to use the 10.8 SDK:
In the MATLAB Command Window, execute the following commands:
cd(matlabroot)
cd bin
edit mexopts.sh
Save a backup copy of this file somewhere in case you make a mistake and you need to revert your changes.
Scroll down to the Mac (“maci64”) section of this file, beginning around line 120.
Replace all instances of 10.7 with 10.8; there are four of these in all (a fifth may be found in comments only)
Save the file, then execute the following command in the MATLAB Command Window:
mex -setup
Please note that this workaround links MEX files with a different SDK
than with which MATLAB was tested. Although there are no known
compatibility issues, support may be limited.
Here is the situation:
Ubuntu 13.04, Matlab 2012a and Intel C++ Composer XE 2013 for Linux.
I downloaded a matlab code archive and followed the instructions in it to compile the .cpp files. Formerly when I finished installing Matlab 2012a and started it, some error messages showed up and I googled out an answer which is:
sudo ln -s /lib/x86_64-linux-gnu/libc.so.6 /lib64/libc.so.6
And then there came out another error message which told me 'missing lstdc++' when I started compiling, the idea of re-installing g++ first came into my mind, and the error message disappeared after I did so. However, finally I got an error which I could not find an answer anywhere:
>> compilemex
ld: cannot find -lguide
mex: link of ' "max_pool.mexa64"' failed.
Error using mex (line 206)
Unable to complete successfully.
Error in compilemex (line 20)
eval(exec_string{1});
During the the process of searching for a solution, I found a thread for my previous 'missing lstdc++' error which differed from what I did to fix it, does this matter or not? And another hint is that I could not find any file named like 'libguide' under the /opt/intel/ directory, how could I fix it?
Thanks in advance!
Googl'ing for libguide, i found this:
http://software.intel.com/en-us/forums/topic/284445
According to this, the build script you're using refers to an old version of the intel compiler. Newer versions seem to have the functions in libguide.so moved to libiomp5.so.
So try replacing -lguide by -liomp5.
Disclaimer: this is pure google knowledge. Personally I have no idea what either library is good for :)