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Hi Po-Yu,
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<div>It's great to hear it's working for you now! Those are the same packages I have for running Flash as well.</div>
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<div>Thanks,</div>
<div>Baowei</div>
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<div>On Nov 30, 2025, at 9:45 PM, pchang <pchang@mail.ncku.edu.tw> wrote:</div>
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<p>Hi Baowei,</p>
<p>Thank you! Yes, it was the problem that lapack library was not installed. After installing the lapack library and adding the line you suggested in Makefile.h, it worked. </p>
<p>I didn't install lapack library before and have no issues running other examples. Right now, I have HDF5, HYPRE, NetCDF, Lapack installed for runing FLASH. Are there any other libraries that may be needed? Thank you.</p>
<p>Cheers,</p>
<p>Po-Yu</p>
<div class="moz-cite-prefix">Liu, Baowei 於 2025/12/1 上午 04:53 寫道:<br>
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<blockquote type="cite" cite="mid:E034D628-6F50-48CE-99F9-2D1968865D3F@ur.rochester.edu">
Sorry I meant to say: in your Makefile.h<br id="lineBreakAtBeginningOfMessage">
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<div>On Nov 30, 2025, at 3:44 PM, Liu, Baowei <a class="moz-txt-link-rfc2396E" href="mailto:baowei.liu@rochester.edu">
<baowei.liu@rochester.edu></a> wrote:</div>
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Hello Po-Yu,
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<div>These look like Lapack functions. Do you have the lapack library installed and linked? You might want to try manually adding the installed path to LIB_LAPACK = in your Makefile.in file — something like:</div>
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<div>LIB_LAPACK = -L YOUR_LAPACK_LIB_PATH -llapack -lblas</div>
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<div>Let me know if still issues or other questions.</div>
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<div>Thanks,</div>
<div>Baowei <br id="lineBreakAtBeginningOfMessage">
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<div>________________________________<br>
Baowei Liu<br>
Center for Integrated Research Computing<br>
University of Rochester<br>
Bausch&Lomb 455A<br>
(585)276-4105<br>
________________________________</div>
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<div>On Nov 27, 2025, at 11:45 PM, pchang <a class="moz-txt-link-rfc2396E" href="mailto:pchang@mail.ncku.edu.tw">
<pchang@mail.ncku.edu.tw></a> wrote:</div>
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<div>Dear FLASH developers and users,<br>
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I am using FLASH (v4.8) to simulate a 1D cylindrical Z-Pinch as a start for simulating Z-pinch. I tried to use the example "Z-pinch Simulation" and followed the manual to setup:<br>
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./setup -auto magnetoHD/ZPinch -1d +cylindrical +ug +usm3t +mtmmmt species=fill,line,vacu +mgd mgd_meshgroups=6 +hdf5typeio<br>
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However, when I compiled the code by using "make", I got the following error messages:<br>
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/bin/ld: /tmp/cc0mvl41.ltrans23.ltrans.o: in function `__gr_uhyprelinearleastsquares_MOD_lsq.constprop.0':<br>
/home/pchang/Downloads/FLASH4.8/object/gr_uhypreLinearLeastSquares.F90:129: undefined reference to `dgelsy_'<br>
/bin/ld: /home/pchang/Downloads/FLASH4.8/object/gr_uhypreLinearLeastSquares.F90:129: undefined reference to `dgelsy_'<br>
/bin/ld: /tmp/cc0mvl41.ltrans23.ltrans.o: in function `__gr_uhypreparamesh_MOD_initweightset.constprop.0':<br>
/home/pchang/Downloads/FLASH4.8/object/gr_uhypreLinearLeastSquares.F90:76: undefined reference to `dgeqrf_'<br>
/bin/ld: /tmp/cc0mvl41.ltrans23.ltrans.o:/home/pchang/Downloads/FLASH4.8/object/gr_uhypreLinearLeastSquares.F90:83: undefined reference to `dorgqr_'<br>
/bin/ld: /tmp/cc0mvl41.ltrans23.ltrans.o: in function `__gr_uhypreparamesh_MOD_initweightset.constprop.0':<br>
/home/pchang/Downloads/FLASH4.8/object/gr_uhypreLinearLeastSquares.F90:146: undefined reference to `dgesv_'<br>
/bin/ld: /tmp/cc0mvl41.ltrans23.ltrans.o:/home/pchang/Downloads/FLASH4.8/object/gr_uhypreLinearLeastSquares.F90:76: undefined reference to `dgeqrf_'<br>
/bin/ld: /tmp/cc0mvl41.ltrans23.ltrans.o:/home/pchang/Downloads/FLASH4.8/object/gr_uhypreLinearLeastSquares.F90:146: undefined reference to `dgesv_'<br>
collect2: error: ld returned 1 exit status<br>
make: *** [Makefile:384: flash4] Error 1<br>
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Did I miss anything that caused the error? Thank you.<br>
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Cheers,<br>
<br>
Po-Yu<br>
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-- <br>
Po-Yu Chang<br>
Associate Professor<br>
Institute of Space and Plasma Sciences (ISAPS)<br>
National Cheng Kung University (NCKU)<br>
No.1, University Road,<br>
Tainan City 70101, Taiwan<br>
(TEL) +886-6-2757575 ext. 65916<br>
<a class="moz-txt-link-abbreviated" href="mailto:pchang@mail.ncku.edu.tw">pchang@mail.ncku.edu.tw</a><br>
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<pre class="moz-signature" cols="72">--
Po-Yu Chang
Associate Professor
Institute of Space and Plasma Sciences (ISAPS)
National Cheng Kung University (NCKU)
No.1, University Road,
Tainan City 70101, Taiwan
(TEL) +886-6-2757575 ext. 65916
<a class="moz-txt-link-abbreviated" href="mailto:pchang@mail.ncku.edu.tw">pchang@mail.ncku.edu.tw</a>
<a class="moz-txt-link-freetext" href="https://urldefense.com/v3/__https://capst.ncku.edu.tw/PGS/__;!!CGUSO5OYRnA7CQ!bzuoP2uXsqmR4LLb3xk1c4Lu9TpVJVEJ6TI6uXvZsFBlG8_KE8hLMlO8I6M4CdmcCt5strklXS-keWOAIFoWYK1rekdQ$">https://capst.ncku.edu.tw/PGS/</a></pre>
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