Error: Too many arguments in call to 'idate' at (1)

[FX Coudert]

>  In file /sw/src/fink.build/ccp4-6.0.1-1005/ccp4-6.0.1/src/refmac5_/ 
> make_unix_ccp4.f:100
>
>       CALL IDATE(IMON,IDAY,IYR)
>                                                                        
>  1
> Error: Too many arguments in call to 'idate' at (1)

This error message is right according to the doc: http://gcc.gnu.org/ 
onlinedocs/gfortran/IDATE.html

It looks like the behaviour you expect is an undocumented g77 extension.

FX