When I try to install odesolve > install.packages("odesolve") I get the following error: ----------------------- gcc -bundle -flat_namespace -undefined suppress -L/usr/local/lib -o odesolve.so bnorm.o call_lsoda.o cfode.o dgbfa.o dgbsl.o dgefa.o dgesl.o ewset.o fdump.o fnorm.o i1mach.o intdy.o j4save.o lsoda.o odesolve_utils.o prja.o solsy.o stoda.o vmnorm.o xercnt.o xerrwv.o xsetf.o -framework vecLib -L/usr/local/lib -L/usr/local/lib/gcc/powerpc-apple-darwin6.6/3.4 -L/usr/local/lib/gcc/powerpc-apple-darwin6.6/3.4/../../.. -lfrtbegin -lg2c -lSystem -lcc_dynamic ld: warning -L: directory name (/usr/local/lib/gcc/powerpc-apple-darwin6.6/3.4) does not exist ld: warning -L: directory name (/usr/local/lib/gcc/powerpc-apple-darwin6.6/3.4/../../..) does not exist ld: can't locate file for: -lfrtbegin make: *** [odesolve.so] Error 1 ERROR: compilation failed for package 'odesolve' ** Removing '/Applications/StartR.app/RAqua.app/Contents/library/odesolve' ---------------------- and sure enough /usr/local/lib/gcc does not exist in my machine! Anybody knows how to get around this? I am using OS 10.3.2, R 1.8.1 thx, Jorge