Erro no ifort intel fortran compiler 10

[vitormsales]

Quando tento usar o compilador aparece o seguinte erro!! o q devo fazer para resolver??

patricia@paty-desktop:~/patricia/Projeto_07$ ifort Projeto_07.f90 -opro
ld: skipping incompatible /usr/lib/libm.so when searching for -lm
ld: skipping incompatible /usr/lib/libm.a when searching for -lm
ld: skipping incompatible /usr/bin/../lib/libm.so when searching for -lm
ld: skipping incompatible /usr/bin/../lib/libm.a when searching for -lm
ld: skipping incompatible /usr/lib/libm.so when searching for -lm
ld: skipping incompatible /usr/lib/libm.a when searching for -lm
ld: cannot find -lm