From: Richard Dawe <rich AT phekda DOT freeserve DOT co DOT uk>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: make + ld problem
Date: Tue, 02 Sep 2003 22:17:22 +0100
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To: djgpp AT delorie DOT com
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Hello.

"R.Karthick" wrote:
> I am using a make file for creating a bin file out of many C files. I
> am using win2k cmd shell
> 
> with djpp gcc version 3.1 installed with GNU Make version 3.79. The
> version of ld is 2.13.
> 
> My src for the makefile is
> 
> ----------
> 
> objects = kernel32.o pic.o stdio.o keyboard.o gdt.o string.o idt.o
> asm_c.o screen.o writexy.o
> 
> login.o
> allobjects = $(objects) asm.o
> 
> header = include/stdio.h \
>         include/pic.h \
>         include/gdt.h \
>         include/types.h \
>         include/string.h \
>         include/idt.h \
>         include/asm.h \
>         include/screen.h \
>         include/keyboard.h \
>         include/keydefs.h \
>         include/login.h \
>         include/writexy.h
> 
> kernel32.bin : $(objects) asm.o
>         ld -Ttext=0x9000 -o kernel32 $(allobjects)  -e 0x0
>         objcopy -R .note -R .comment -S -O binary kernel32 kernel32.bin
> 
> $(objects) : $(header)
> 
> asm.o :
>         nasm -f coff asm.asm
> 
> --------------
> 
> Now if i run "make" it returns the error
> 
>         make: execvp: ld: Invalid argument
>         make: *** [kernel32.bin] Error 127

Did you try the ld command manually? make should have displayed the ld command
on the screen. It may be worth trying that and then removing options, just to
see if it doesn't like some of the options you've used.

> I removed the login.o from the compilation( objects variable ) and
> added the functions from
> 
> login.c in kernel32.c, so that it will be included in kernel32.o, and
> the binary file gets
> 
> created smoothly in that way. Does ld have any maximum number of files
> limitation which can be
> 
> included to it from the command line or the make file??

There is a limit on the length of the command-line. It depends whether the
command is a normal DOS program, a DJGPP program or a Windows program (*). DOS
command-lines are limited to ~128 characters (I can't remember the exact
number). Command-lines between DJGPP programs are limited to the size of the
transfer buffer, but that's usually several kilobytes.

(*) Windows programs can have longer command-lines with DJGPP 2.04 alpha.

I don't think you are reaching the maximum command-line length. It seems the
problem is in your ld command-line.

> I tried to remove all the .o files in the directory and started a
> fresh make, and even that didnt
> 
> seem to work.
[snip]

What error did you get?

Regards,

-- 
Richard Dawe [ http://www.phekda.freeserve.co.uk/richdawe/ ]