After 11.3 upgrade, matlab compiler fails because of gcc

English Applications
1

Hi
I just upgraded from 11.2 to 11.3 and are facing now this mex compiling problem.
The error output is:

/usr/lib/gcc/i586-suse-linux/4.5/cc1: /usr/local/matlab/R2009a/sys/os/glnx86/libstdc++.so.6: version `GLIBCXX_3.4.14' not found (required by /usr/lib/libppl_c.so.2)
/usr/lib/gcc/i586-suse-linux/4.5/cc1: /usr/local/matlab/R2009a/sys/os/glnx86/libstdc++.so.6: version `GLIBCXX_3.4.11' not found (required by /usr/lib/libppl_c.so.2)
/usr/lib/gcc/i586-suse-linux/4.5/cc1: /usr/local/matlab/R2009a/sys/os/glnx86/libstdc++.so.6: version `GLIBCXX_3.4.14' not found (required by /usr/lib/libppl.so.7)
/usr/lib/gcc/i586-suse-linux/4.5/cc1: /usr/local/matlab/R2009a/sys/os/glnx86/libstdc++.so.6: version `GLIBCXX_3.4.11' not found (required by /usr/lib/libppl.so.7)
/usr/lib/gcc/i586-suse-linux/4.5/cc1: /usr/local/matlab/R2009a/sys/os/glnx86/libstdc++.so.6: version `GLIBCXX_3.4.11' not found (required by /usr/lib/libgmpxx.so.4)

    mex: compile of ' "littleCprogram.c"' failed.

My first guess is that gcc 4.5 was not installed before and is now causing problems
Any idea how I could switch to an older gcc or make this glibcXX found again?

my installed gcc libraries are:

rpm -qa |grep gcc
gcc41-info-4.1.2_20070115-16.1.i586
llvm-gcc-2.5-0.pm.3.8.i586
gcc43-4.3.4_20091019-3.1.i586
gcc45-4.5.0_20100604-1.12.i586
gcc33-3.3.3-22.1.i586
gcc41-4.1.2_20070115-16.1.i586
gcc-4.5-4.2.i586
libgcc45-4.5.0_20100604-1.12.i586
2

I found a workaround here

Matlab is using his own libraries which are not compatible with the newly installed ones. I therefore replaced two files with symbolic links inside the matlab path matlab/sys/os/glnx86/ as root:

rm libgcc_s.so.1 libstdc++.so.6
 ln -s /lib/libgcc_s.so.1 libgcc_s.so.1
 ln -s /usr/lib/libstdc++.so.6.0.9 libstdc++.so.6
3

A better fix would be not to remove the system ones but set LD_LIBRARY_PATH for matlab to search a specific directory for override libraries. Deleting the system libraries and replacing them with older ones risks breaking other apps that depend on those libraries.

Unless I misunderstood your post and you were replacing the matlab ones with the system ones.