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<font face="arial, helvetica, sans-serif" style="color:rgb(34,34,34);font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial">Hello Christoph,</font><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial"><font face="arial, helvetica, sans-serif">I apologize for the delayed response, and appreciate your input. I am not aware of anyone in my group related to DuMuX; I received my .opts file from a post-doc who has worked with DUNE in the past, but as far as I know he is not related to the DuMuX group either. That being said, I may just be unaware of the affiliation!<br></font><div><font face="arial, helvetica, sans-serif"><br></font></div><div><font face="arial, helvetica, sans-serif">I may have misunderstood your suggestion, but adding the line</font></div><div><font face="arial, helvetica, sans-serif">-DCMAKE_CXX_FLAGS = </font><span style="color:rgb(0,0,0);font-family:arial,helvetica,sans-serif;white-space:pre-wrap">" \</span></div><div><pre style="white-space:pre-wrap;color:rgb(0,0,0);font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial"><font face="arial, helvetica, sans-serif">     -fopenmp \
     -fno-strict-aliasing \
     -fstrict-overflow \
     -ffast-math \
     -fno-finite-math-only \
     -O3 \
     -g \
     -march=native \
     -DNDEBUG=1"</font></pre></div><div><font face="arial, helvetica, sans-serif">to my CMAKE_FLAGS variable in my .opts file gave me the same error as before; everything builds without issue, but when using GDB I get a "no debugging symbols found" error. Is there something else I need to add in order to get the -g flag to be passed to the C++ compiler?</font></div><div><font face="arial, helvetica, sans-serif"><br></font></div><div><font face="arial, helvetica, sans-serif">In regards to using the verbose option, I make my executable using dune-control:</font></div><div><span style="font-family:arial,helvetica,sans-serif;color:rgb(0,0,0);white-space:pre-wrap">./dune/dune-common-2.5.1/bin/dunecontrol</span></div><div><font face="arial, helvetica, sans-serif">Do you know if there is an analogous option to VERBOSE=ON for dune-control, in order to see what flags are actually used?</font></div></div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial"><font face="arial, helvetica, sans-serif"><br></font></div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial"><font face="arial, helvetica, sans-serif">Any input you or anyone else may have would be greatly appreciated!</font></div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial"><font face="arial, helvetica, sans-serif"><br></font></div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial"><font face="arial, helvetica, sans-serif">Thank you,</font></div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial"><font face="arial, helvetica, sans-serif">Bryan</font></div></div>