gcc fatal error :no such file or directory question

NoobLion · 08-25-2011, 09:42 PM

sloan@Nexus:~/Desktop/Research/olb-0.6r0/examples/poiseuille2d> gcc -c poiseuille.cpp -o poise

poiseuille.cpp:24:19: fatal error: olb2D.h: No such file or directory
compilation terminated.

anyways i have the olb2D.h file in anouther directory but im not really sure what im doing wrong here in compiling this. Kinda tired so forgive me

anyhelp would be appreciated

a4z · 08-26-2011, 12:07 AM

you need to tell the compiler about additional include directories via -I/path/to/dir

Nylex · 08-26-2011, 12:53 AM

I've just downloaded the source for OpenLB and there's a Makefile in that directory. So, just type "make" to build the executable. Also, for what it's worth, using -c wouldn't build the complete exectuable; it would only generate object files and you'd need to perform the linking step manually.

Edit: There is also a user's guide on the OpenLB website, so reading that would probably have told you how to build the examples.