You haven't figured out the basic concept. Start reading here: http://tldp.org/HOWTO/Program-Library-HOWTO/shared-libraries.html
Basically all those -lsomethings are libgsl.so, libm.so etc. Now you will need to make your main program and link it against your libEx.so with -lEx in the linking command. Or then start using the generated libEx.so with julia ccall like you tried in the first post. On Wednesday, February 3, 2016 at 7:50:25 PM UTC+2, Chris Rackauckas wrote: > > Thanks for the replies. I mixed the compile commands from here > <http://stackoverflow.com/questions/14884126/build-so-file-from-c-file-using-gcc-command-line> > with > the information on the libraries to link > <https://www.gnu.org/software/gsl/manual/html_node/Linking-programs-with-the-library.html#Linking-programs-with-the-library> > from > the GSL site to make the following command: > > gcc -Wall -g -shared -o libEx.so -lgsl -lgslcblas -lm -fPIC example.c > > However, when I ./libEx.so I get a segfault. So I opened it in gdb and ran > it to get: > > (gdb) run > Starting program: /home/crackauc/Public/libEx.so > > Program received signal SIGSEGV, Segmentation fault. > 0x0000000000000001 in ?? () > > > What does that error even mean? Since the object works and the shared > library doesn't. I assume that I compiled it wrong. > >
