Dear all, after running the PGPLOT_install script, I'm trying to continue the installation using ./configure, and sudo make, but in this step appears the following error message, collect2: error: ld returned 1 exit status make[3]: *** [libifeffit.so] Error 1 make[3]: Leaving directory `/home/ernesto/ifeffit-master/src/lib' make[2]: *** [all-recursive] Error 1 make[2]: Leaving directory `/home/ernesto/ifeffit-master/src' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/home/ernesto/ifeffit-master' make: *** [all-recursive-am] Error 2 Could you help me to overcome this error? Thanks a lot! --------------------------------------------------------------------------- Ernesto Ramos Physical Engineer University of Brasilia, Campus Darcy Ribeiro 70910900 Brasilia DF, Brazil Tel. (+55) 61 30343370 Cel. (+55) 61 82317244 ---------------------------------------------------------------------------