Re: Re: Milliseconds on DOS

Re: Re: Milliseconds on DOS

[Daniel Finol]

On Apr 30, 2001, "Daniel Finol" <danielfinol@hotmail.com> wrote:

>   I'm using G77 on a DOS box under Windows98.  I need to measure time
>   in milliseconds.  But neither MClock, MCLock8, System_Clock,
>   Date_and_Time nor times is recognized by the compiler (I get the
>   "undefined symbol" error).

Alexandre Oliva wrote:

>This is a message from the linker, not from the compiler, and it
>indicates the C library (which is not part of the compiler either)
>doesn't contain the functions you called.  I don't know which C
>library you're using, so it's hard to tell which function to
>recommend.

Thanks to Alexandre for his answer but I still have some questions (I'm new 
to GNU software, I'm Borland C++ 3.1 user):

- G77 is a compiler and linker all in one isn't it? (I'm using the GNU G77 
version 0.5.19, it comes with the EMX Dos extender)

- What do C libraries have to do with this? Is G77 "just" a Fortran-2-C + 
C-Compiler? In any case I'm using (or trying to use) the libraries that come 
with the G77 package (the .a files in the lib directory).

- The g77_info-8 file describes the Date_and_Time routine, doesn't that mean 
that it is part of the package?

Thanks again to Alexandre and to any one who can give me further help.
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Re: Milliseconds on DOS

[Alexandre Oliva]

On May  2, 2001, "Daniel Finol" <danielfinol@hotmail.com> wrote:

> - G77 is a compiler and linker all in one isn't it?

Nope.  G77 is a compilation driver that runs f771 (the actual fortran
compiler), as (the assembler) and ld/collect-ld (the linker).

> - What do C libraries have to do with this?

Sorry.  I had missed the fact that you were talking about fortran.

Anyway, I believe the fortran library is built atop the C library.
But I know nothing of fortran, so I have no idea of which functions
are available to manipulate time.

> - The g77_info-8 file describes the Date_and_Time routine, doesn't
> that mean that it is part of the package?

Presumably, yes.

-- 
Alexandre Oliva   Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer                  aoliva@{cygnus.com, redhat.com}
CS PhD student at IC-Unicamp        oliva@{lsd.ic.unicamp.br, gnu.org}
Free Software Evangelist    *Please* write to mailing lists, not to me

Re: Milliseconds on DOS

[Alexandre Oliva]

On Apr 30, 2001, "Daniel Finol" <danielfinol@hotmail.com> wrote:

>   I'm using G77 on a DOS box under Windows98.  I need to measure time
>   in milliseconds.  But neither MClock, MCLock8, System_Clock,
>   Date_and_Time nor times is recognized by the compiler (I get the
>   "undefined symbol" error).

This is a message from the linker, not from the compiler, and it
indicates the C library (which is not part of the compiler either)
doesn't contain the functions you called.  I don't know which C
library you're using, so it's hard to tell which function to
recommend.

-- 
Alexandre Oliva   Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer                  aoliva@{cygnus.com, redhat.com}
CS PhD student at IC-Unicamp        oliva@{lsd.ic.unicamp.br, gnu.org}
Free Software Evangelist    *Please* write to mailing lists, not to me

Milliseconds on DOS

[Daniel Finol]

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Hello:

  I'm using G77 on a DOS box under Windows98.  I need to measure time in 
milliseconds.  But neither MClock, MCLock8, System_Clock, Date_and_Time nor 
times is recognized by the compiler (I get the "undefined symbol" error).  
In particular the MClock function is said to be supported under MS-DOS (in 
the g77intro.txt file). I've browsed the libraries that come with g77 and 
I've found that the functions system_clock (in the f2c library I think) and 
times are at least named. I've linked the libraries explicitly (although 
they linked by default just using g77 don´t they?) but it doesn´t work.  I 
did not get such error using other functions like Ctime, etc. What do I do?

  Thanking you in advance,

                             Daniel Finol
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