Re: multiple definition of `MAIN__'

[Toon Moene <toon at moene dot indiv dot nluug dot nl>]

Fabian Braennstroem wrote:
> Hello,
>
> I am still trying to adjust an sgi-fortran-code to linux g77.  I get
> this error-message:
>
> main.o(.text+0x10c3): In function `MAIN__':
> : undefined reference to `save_vel__'
> main.o(.text+0x10d2): In function `MAIN__':
> : undefined reference to `save_pres__'
> collect2: ld returned 1 exit status
> make: *** [calc_les_03_cube] Error 1
>
> Without the two subroutines 'save_vel.f''save_pres.f' the program works
> well.

Did you compile save_vel.f and save_pres.f with g77 as well ?

Note that g77 appends two underscores to the name of a subroutine that 
contains an underscore.

If you just assume the loader will get save_vel and save_pres from a 
library compiled with another compiler that doesn't append the extra 
underscore, you're out of luck.

Anyways, don't assume g77-compiled code and code compiled with another 
compiler on your SGI machine will work together flawlessly, even if the 
loader phase succeeds ...

Hope this helps,

--
Toon Moene - mailto:toon@moene.indiv.nluug.nl - phoneto: +31 346 214290
Saturnushof 14, 3738 XG  Maartensdijk, The Netherlands
Maintainer, GNU Fortran 77: http://gcc.gnu.org/onlinedocs/g77_news.html
GNU Fortran 95: http://gcc.gnu.org/fortran/ (under construction)