Library doesn't properly link at command 'make'

Question

I am trying to use some open-source CFD code, and it uses PETSC and some other libraries, so I installed them. But when I try to compile program useing 'make', it seems like libraries are not properly linked with makefile

It seems like petsc isn't properly linked, but I can't know why...

Answer 1

The problem is that PETSc depends on some more libraries (X11) than the CFD package counted on. It should have a proper configure that figures these out. However, you can get the link line you need using

cd PETSC_DIR; make getlinklibs

which you can then put in LIBFLAG.