ngscxx generated is invalid when netgen is already installed

NGSolve / ngsolve

Netgen/NGSolve is a high performance multiphysics finite element software. It is widely used to analyze models from solid mechanics, fluid dynamics and electromagnetics. Due to its flexible Python interface new physical equations and solution algorithms can be implemented easily.

https://ngsolve.org/

GNU Lesser General Public License v2.1

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ngscxx generated is invalid when netgen is already installed #25

Closed Trophime closed 3 years ago

Trophime commented 3 years ago

Hi, I'm trying to package ngsolve on top of netgen fro Debian. I ran into an issue with ngcxx, ngsld.

Would it be possible to change the main ngsolve CMakeLists.txt to account for an already installed netgen and not looking into NGSCXX_DIR for netgen headers?

ChrLackner commented 3 years ago

Hi, ngcxx and ngsld are scripts we install alongside with ngsolve to easier compile addon libraries. So NGSCXX_DIR should point to /usr/bin or something alike and add the paths for the netgen/ngsolve libraries to compiler/linker calls. If you want to build ngsolve with an already installed netgen call cmake with -DUSE_SUPERBUILD=OFF this disables the superbuild that builds netgen+dependencies.

If this doesn't answer your question please feel free to reopen this issue.

Best