Error generating c++ shared library in ubuntu 12.04 MATLAB R2012a

I am getting an error while using matlab compiler to generate c++ shared library .I am using MATLAB R2012a in ubuntu 12.4.I also read that it may be because of the ubuntu 12.4 and I should degrade to 10.10 but I am not sure if the error is beacause of that:

ant:

<mkdir dir="/home/fashion/handbag/trial1/distrib" />
<mkdir dir="/home/fashion/handbag/trial1/src" />
mcc -W cpplib:trial1 -T link:lib -d /home/fashion/handbag/trial1/src -N -p vision -p stats -w enable:specified_file_mismatch -w enable:repeated_file -w enable:switch_ignored -w enable:missing_lib_sentinel -w enable:demo_license -v /home/fashion/handbag/handbagtest.m -a /home/fashion/handbag/allfeatures_mat.mat -a /home/fashion/handbag/cluster_lab_pixels.m -a /home/fashion/handbag/color_labels_for_means.m -a /home/fashion/handbag/color_space_file.mat -a /home/fashion/handbag/compute_color_signature.m -a /home/fashion/handbag/extract_canny_prelim_mask.m -a /home/fashion/handbag/extract_phog_features.m -a /home/fashion/handbag/generate_pyramid.m -a /home/fashion/handbag/pb_raster_scan.m -a /home/fashion/handbag/rank_query_L2.m -a /home/fashion/handbag/rec_structdisp.m -a /home/fashion/handbag/renew_mask.m -a /home/fashion/handbag/single_handbag_description_seq.m
Compiler version: 4.17 (R2012a)
Warning: The name of a shared library should begin with the letters "lib".
'trial1' doesn't.
Processing /usr/local/MATLAB/R2012a/toolbox/matlab/mcc.enc
Processing /usr/local/MATLAB/R2012a/toolbox/images/mcc.enc
Processing /usr/local/MATLAB/R2012a/toolbox/stats/mcc.enc
Processing /usr/local/MATLAB/R2012a/toolbox/shared/statslib/mcc.enc
Processing /usr/local/MATLAB/R2012a/toolbox/shared/imageslib/mcc.enc
Processing include files...
2 item(s) added.
Processing directories installed with MCR...
The file /home/fashion/handbag/trial1/src/mccExcludedFiles.log contains a list of functions excluded from the CTF archive.
0 item(s) added.
Generating MATLAB path for the compiled application...
Created 48 path items.
Begin validation of MEX files: Tue Jun 4 18:05:18 2013
Validating '/usr/local/MATLAB/R2012a/toolbox/images/images/private/applylutc.mexa64'.
No conflicting MATLAB file found.
Validating '/usr/local/MATLAB/R2012a/toolbox/images/images/private/computeedge.mexa64'.
No conflicting MATLAB file found.
Validating '/usr/local/MATLAB/R2012a/toolbox/images/images/private/grayto8.mexa64'.
Found MATLAB file '/usr/local/MATLAB/R2012a/toolbox/images/images/private/grayto8.m'.
MEX file
'/usr/local/MATLAB/R2012a/toolbox/images/images/private/grayto8.mexa64'
is valid. It contains 'mexFunction.'
Validating '/usr/local/MATLAB/R2012a/toolbox/images/images/private/imapplymatrixc.mexa64'.
No conflicting MATLAB file found.
Validating '/usr/local/MATLAB/R2012a/toolbox/images/images/private/imcomplementmex.mexa64'.
No conflicting MATLAB file found.
Validating '/usr/local/MATLAB/R2012a/toolbox/images/images/private/imfilter_mex.mexa64'.
No conflicting MATLAB file found.
Validating '/usr/local/MATLAB/R2012a/toolbox/images/images/private/imhistc.mexa64'.
Found MATLAB file '/usr/local/MATLAB/R2012a/toolbox/images/images/private/imhistc.m'.
MEX file
'/usr/local/MATLAB/R2012a/toolbox/images/images/private/imhistc.mexa64'
is valid. It contains 'mexFunction.'
Validating '/usr/local/MATLAB/R2012a/toolbox/images/images/private/imlincombc.mexa64'.
No conflicting MATLAB file found.
Validating '/usr/local/MATLAB/R2012a/toolbox/images/images/private/imreconstructmex.mexa64'.
No conflicting MATLAB file found.
Validating '/usr/local/MATLAB/R2012a/toolbox/images/images/private/imresizemex.mexa64'.
No conflicting MATLAB file found.
Validating '/usr/local/MATLAB/R2012a/toolbox/images/images/private/ind2rgb8c.mexa64'.
No conflicting MATLAB file found.
Validating '/usr/local/MATLAB/R2012a/toolbox/images/images/private/int16touint16.mexa64'.
No conflicting MATLAB file found.
Validating '/usr/local/MATLAB/R2012a/toolbox/images/images/private/int32touint32.mexa64'.
No conflicting MATLAB file found.
Validating '/usr/local/MATLAB/R2012a/toolbox/images/images/private/int8touint8.mexa64'.
No conflicting MATLAB file found.
Validating '/usr/local/MATLAB/R2012a/toolbox/images/iptformats/private/bitparse.mexa64'.
No conflicting MATLAB file found.
Validating '/usr/local/MATLAB/R2012a/toolbox/images/iptformats/private/dicom_decode_rle_segment.mexa64'.
No conflicting MATLAB file found.
Validating '/usr/local/MATLAB/R2012a/toolbox/images/iptformats/private/dicomlookup_helper.mexa64'.
No conflicting MATLAB file found.
Validating '/usr/local/MATLAB/R2012a/toolbox/images/iptformats/private/dicomparse.mexa64'.
No conflicting MATLAB file found.
Validating '/usr/local/MATLAB/R2012a/toolbox/images/iptformats/private/rnitfc.mexa64'.
No conflicting MATLAB file found.
Validating '/usr/local/MATLAB/R2012a/toolbox/images/iptformats/private/tobits.mexa64'.
No conflicting MATLAB file found.
Validating '/usr/local/MATLAB/R2012a/toolbox/shared/statslib/@categorical/private/issqrbrktliteral.mexa64'.
No conflicting MATLAB file found.
Validating '/usr/local/MATLAB/R2012a/toolbox/stats/stats/@sobolset/private/DNToMatrix.mexa64'.
No conflicting MATLAB file found.
Validating '/usr/local/MATLAB/R2012a/toolbox/stats/stats/@sobolset/private/MatrixToDN.mexa64'.
No conflicting MATLAB file found.
Validating '/usr/local/MATLAB/R2012a/toolbox/stats/stats/@sobolset/private/computeDN.mexa64'.
No conflicting MATLAB file found.
Validating '/usr/local/MATLAB/R2012a/toolbox/stats/stats/@sobolset/private/convertToDouble.mexa64'.
No conflicting MATLAB file found.
Validating '/usr/local/MATLAB/R2012a/toolbox/stats/stats/@sobolset/private/matrixBitXor.mexa64'.
No conflicting MATLAB file found.
Validating '/usr/local/MATLAB/R2012a/toolbox/stats/stats/@sobolset/private/sobolIndexed.mexa64'.
No conflicting MATLAB file found.
Validating '/usr/local/MATLAB/R2012a/toolbox/stats/stats/@sobolset/private/sobolNet.mexa64'.
No conflicting MATLAB file found.
Validating '/usr/local/MATLAB/R2012a/toolbox/stats/stats/@sobolset/private/sobolPoint.mexa64'.
No conflicting MATLAB file found.
Validating '/usr/local/MATLAB/R2012a/toolbox/stats/stats/@sobolset/private/sobolSequence.mexa64'.
No conflicting MATLAB file found.
Validating '/usr/local/MATLAB/R2012a/toolbox/stats/stats/private/statsizechk.mexa64'.
Found MATLAB file '/usr/local/MATLAB/R2012a/toolbox/stats/stats/private/statsizechk.m'.
MEX file
'/usr/local/MATLAB/R2012a/toolbox/stats/stats/private/statsizechk.mexa64'
is valid. It contains 'mexFunction.'
End validation of MEX files: Tue Jun 4 18:05:18 2013
Warning: Adding path "/home/fashion/handbag" to Compiler path instance.
Parsing file "/home/fashion/handbag/handbagtest.m"
    (Referenced from: "Compiler Command Line").
Parsing file "/usr/local/MATLAB/R2012a/toolbox/compiler/deploy/deployprint.m"
    (Referenced from: "Compiler Command Line").
Parsing file "/usr/local/MATLAB/R2012a/toolbox/compiler/deploy/printdlg.m"
    (Referenced from: "Compiler Command Line").
Deleting 31 temporary MEX authorization files.
Removing: '/tmp/01665T6Wb9X_5733.auth'.
Removing: '/tmp/01665UXFol1_5733.auth'.
Removing: '/tmp/01665HZrCx4_5733.auth'.
Removing: '/tmp/01665Wp8QJ7_5733.auth'.
Removing: '/tmp/01665LsG6Va_5733.auth'.
Removing: '/tmp/01665q25m8d_5733.auth'.
Removing: '/tmp/016651RmEkh_5733.auth'.
Removing: '/tmp/01665CLtWwk_5733.auth'.
Removing: '/tmp/01665NDufJn_5733.auth'.
Removing: '/tmp/016658QmzVq_5733.auth'.
Removing: '/tmp/01665lg9T7t_5733.auth'.
Removing: '/tmp/01665syNfkx_5733.auth'.
Removing: '/tmp/01665NNmCwA_5733.auth'.
Removing: '/tmp/01665Y5PZID_5733.auth'.
Removing: '/tmp/01665ZAetVG_5733.auth'.
Removing: '/tmp/01665WJBX7J_5733.auth'.
Removing: '/tmp/01665d7ytkN_5733.auth'.
Removing: '/tmp/01665gLp0wQ_5733.auth'.
Removing: '/tmp/016659juzJT_5733.auth'.
Removing: '/tmp/01665eJq9VW_5733.auth'.
Removing: '/tmp/01665HiLO8Z_5733.auth'.
Removing: '/tmp/01665IxxBl3_5733.auth'.
Removing: '/tmp/01665towpy6_5733.auth'.
Removing: '/tmp/01665mRyeL9_5733.auth'.
Removing: '/tmp/01665Tku4Xc_5733.auth'.
Removing: '/tmp/016652HoVag_5733.auth'.
Removing: '/tmp/016651JgNnj_5733.auth'.
Removing: '/tmp/016650lKHAm_5733.auth'.
Removing: '/tmp/01665pnbDNp_5733.auth'.
Removing: '/tmp/01665aMyz0s_5733.auth'.
Removing: '/tmp/01665houxdw_5733.auth'.
Generating file "/home/fashion/handbag/trial1/src/trial1.h".
Generating file "/home/fashion/handbag/trial1/src/trial1.cpp".
Generating file "/home/fashion/handbag/trial1/src/trial1.exports".
Generating file "/home/fashion/handbag/trial1/src/readme.txt".
Executing command: "/usr/local/MATLAB/R2012a/bin/mbuild" -O -v -output "trial1" -I"/home/fashion/handbag/trial1/src" "/home/fashion/handbag/trial1/src/trial1.cpp" "/home/fashion/handbag/trial1/src/trial1.exports" -link shared -outdir "/home/fashion/handbag/trial1/src"
Warning: You are using gcc version "4.7.2-2ubuntu1)". The version
currently supported with MATLAB Compiler is "4.4.6".
For a list of currently supported compilers see:
http://www.mathworks.com/support/compilers/current_release/
----------------------------------------------------------------
-> mbuildopts.sh sourced from directory (DIR = .)
FILE = ./mbuildopts.sh
----------------------------------------------------------------
-> TMW_ROOT = /usr/local/MATLAB/R2012a
-> CC = g++
-> CC flags:
CFLAGS = -fPIC -ansi -D_GNU_SOURCE -I/usr/local/MATLAB/R2012a/extern/include/cpp -I/usr/local/MATLAB/R2012a/extern/include -DUNIX -DX11 -DGLNXA64 -DGCC -pthread
CDEBUGFLAGS = -g
COPTIMFLAGS = -O -DNDEBUG
CLIBS = -Wl,-rpath-link,/usr/local/MATLAB/R2012a/bin/glnxa64 -L/usr/local/MATLAB/R2012a/runtime/glnxa64 -lmwmclmcrrt -lm
arguments =
-> LD = g++
-> Link flags:
LDFLAGS = -pthread -shared
LDDEBUGFLAGS = -g
LDOPTIMFLAGS = -O
arguments =
----------------------------------------------------------------
-> g++ -c -I/home/fashion/handbag/trial1/src -fPIC -ansi -D_GNU_SOURCE -I/usr/local/MATLAB/R2012a/extern/include/cpp -I/usr/local/MATLAB/R2012a/extern/include -DUNIX -DX11 -DGLNXA64 -DGCC -pthread -O -DNDEBUG "/home/fashion/handbag/trial1/src/trial1.cpp" -o /home/fashion/handbag/trial1/src/trial1.o
/usr/local/MATLAB/R2012a/bin/mbuild: 1: eval: g++: not found
mbuild: compile of ' "/home/fashion/handbag/trial1/src/trial1.cpp"' failed.
Error: An error occurred while shelling out to mbuild (error code = 1).
Unable to build executable.

IS it because of the compiler??I used

mbuild -setup

      Options files control which compiler to use, the compiler and link command
      options, and the runtime libraries to link against.

      Using the 'mbuild -setup' command selects an options file that is
      placed in /home/fashion/.matlab/R2012a and used by default for 'mbuild'. An options 
      file in the current working directory or specified on the command line 
      overrides the default options file in /home/fashion/.matlab/R2012a.

      To override the default options file, use the 'mbuild -f' command
      (see 'mbuild -help' for more information).

The options files available for mbuild are:

    1: /usr/local/MATLAB/R2012a/bin/mbuildopts.sh : 
        Build and link with MATLAB Compiler generated library via the system ANSI C/C++ compiler

    0: Exit with no changes

Enter the number of the compiler (0-1):
1

/usr/local/MATLAB/R2012a/bin/mbuildopts.sh is being copied to 
/home/fashion/.matlab/R2012a/mbuildopts.sh

Answer 1

[Walter Roberson]

You do not have any "g++" on your Linux path. You do have "gcc" (though it is a newer version than is officially supported by that mbuild.)

It is possible that you have a g++-4.7.2 on your path that is not linked to g++ so you should look around a bit.

!ls $(dirname $(which gcc))/g+*

[ab]

how can I find whether I have g++ on m linux machine? And how can I link it?Sorry i am new to linux so I don't have much idea. I tried running !ls $(dirname $(which gcc))/g+* it gives gcc:fatal error: no input files compilation terminated. ls:cannot access /g+*:No such file or directory

[ab]

when I tired which g++ it shoes /usr/bin/g++. In bin I have g++,g++4.4 and g++-4.7 Now how can I link it?

$ g++ --version g++ (Ubuntu/Linaro 4.7.2-2ubuntu1) 4.7.2

[Walter Roberson]

Open a Linux command terminal (outside MATLAB) and give the command

which gcc

what does it report?

Also what does

which g++

report?

[ab]

which gcc gives

/usr/bin/gcc

which g++ gives

/usr/bin/g++

$ gcc --version gcc (Ubuntu/Linaro 4.7.2-2ubuntu1) 4.7.2

$ g++ --version g++ (Ubuntu/Linaro 4.7.2-2ubuntu1) 4.7.2

[Walter Roberson]

Try editing mbuildopts.sh and changing

CC = g++

to

CC = /usr/bin/g++

Also please notice the warning you got near the beginning: shared libraries should begin with "lib". You could name yours "libtrial1" for example.