Hi,<br><br>   I was able to compile ipopt 3.7.0 with pardiso using the following configure command:<br><br>./configure --prefix=$HOME/octave-src/ipopt370/install ADD_CXXFLAGS=&quot;-fPIC -fexceptions&quot; ADD_CFLAGS=&quot;-fPIC -fexceptions&quot; ADD_FFLAGS=&quot;-fPIC -fexceptions&quot; --with-pardiso=&quot;-fopenmp $HOME/octave-src/ipopt370/libpardiso_GNU43_AMD64_INT64_P.so&quot;<br>

<br>Now when I run ipopt on my problem, via mex interface, I get the following error:<br><br>symbol lookup error: /home/rishiamrit/octave-src/ipopt370/libpardiso_GNU43_AMD64_INT64_P.so: undefined symbol: GOMP_parallel_start<br>

<br>Any ideas ? Am I supposed to link gomp library (/usr/lib/gcc/x86_64-linux-gnu/4.3/libgomp.a) somehow ? If so, how ?<br><br>Thanks,<br><br>Best,<br>Rishi<br>