• Carlos Rodriguez <Carlos_member pathlink.com> Jul 31 2003
• "Walter" <walter digitalmars.com> Jul 31 2003
• Carlos Rodriguez <Carlos_member pathlink.com> Aug 01 2003
• "Walter" <walter digitalmars.com> Aug 01 2003

Carlos Rodriguez <Carlos_member pathlink.com> writes:

Hello, I'm trying to build an almost-ROMable program, but I have some trouble
linking it: optlink says:
"Error 18: GROUP cannot be both relocatale and absolute : DGROUP"

I have written a custom startup module, where all segments are defined with
desired absolute addresses, and it is the first file input to the linker; I also
have a couple more files written in assembler, and there is no problem with
them.

But when it tries to link an obj file generated from a C source, that error
appears, so I think I'm missing something with the compiler; the command line
I'm using is:
dmc -3 -c -A -msuw -a1 -r -R -Nc -Ns -NL -HS -Mc -ostartup_c.obj startup_c.c

As you can see, standard libraries are omitted, as in the linker:
link -BINARY -DOSSEG -NOD -FIXED ....

So, simplifying: how can I set up the compiler so it generates non-relocatable
code?

Thanks..

"Walter" <walter digitalmars.com> writes:

The easiest way is go ahead and generate an 'MZ' executable which contains
relocation information, and then run a 'locater' program on the result,
which will bind it to a particular address and output the data in a form
suitable for downloading to a ROM programmer.

"Carlos Rodriguez" <Carlos_member pathlink.com> wrote in message
news:bgcetl$26ul$1 digitaldaemon.com...
 Hello, I'm trying to build an almost-ROMable program, but I have some


 linking it: optlink says:
 "Error 18: GROUP cannot be both relocatale and absolute : DGROUP"

 I have written a custom startup module, where all segments are defined


 desired absolute addresses, and it is the first file input to the linker;


 have a couple more files written in assembler, and there is no problem


 them.

 But when it tries to link an obj file generated from a C source, that


 appears, so I think I'm missing something with the compiler; the command


 I'm using is:
 dmc -3 -c -A -msuw -a1 -r -R -Nc -Ns -NL -HS -Mc -ostartup_c.obj


 As you can see, standard libraries are omitted, as in the linker:
 link -BINARY -DOSSEG -NOD -FIXED ....

 So, simplifying: how can I set up the compiler so it generates


 code?

 Thanks..

Carlos Rodriguez <Carlos_member pathlink.com> writes:

Ok, I have only found Paradigm's locater, but I'm not sure the evaluation
version will work as I expect... (maybe it is too limited) do you know any other
locaters I could use? (while waiting for Paradigm to send me their eval.
package)

BTW, I know GNU's linker, ld, can do this, but I'm almost sure it cannot handle
16 bit code, am I right?

Thanks again!

In article <bgcj5c$2aqq$1 digitaldaemon.com>, Walter says...
The easiest way is go ahead and generate an 'MZ' executable which contains
relocation information, and then run a 'locater' program on the result,
which will bind it to a particular address and output the data in a form
suitable for downloading to a ROM programmer.

"Carlos Rodriguez" <Carlos_member pathlink.com> wrote in message
news:bgcetl$26ul$1 digitaldaemon.com...
 Hello, I'm trying to build an almost-ROMable program, but I have some


 linking it: optlink says:
 "Error 18: GROUP cannot be both relocatale and absolute : DGROUP"

 I have written a custom startup module, where all segments are defined


 desired absolute addresses, and it is the first file input to the linker;


 have a couple more files written in assembler, and there is no problem


 them.

 But when it tries to link an obj file generated from a C source, that


 appears, so I think I'm missing something with the compiler; the command


 I'm using is:
 dmc -3 -c -A -msuw -a1 -r -R -Nc -Ns -NL -HS -Mc -ostartup_c.obj


 As you can see, standard libraries are omitted, as in the linker:
 link -BINARY -DOSSEG -NOD -FIXED ....

 So, simplifying: how can I set up the compiler so it generates


 code?

 Thanks..

"Walter" <walter digitalmars.com> writes:

"Carlos Rodriguez" <Carlos_member pathlink.com> wrote in message
news:bgdj5d$7r3$1 digitaldaemon.com...
 Ok, I have only found Paradigm's locater, but I'm not sure the evaluation
 version will work as I expect... (maybe it is too limited) do you know any


 locaters I could use? (while waiting for Paradigm to send me their eval.
 package)


Datalight used to sell one called 'Blaze'. I have no idea if I have a copy
left anymore <g>.

 BTW, I know GNU's linker, ld, can do this, but I'm almost sure it cannot


 16 bit code, am I right?


Yup.

 Thanks again!


You're welcome.