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Date:	Tue, 14 Nov 2006 01:29:26 +0100
From:	"Salvatore D'Angelo" <koala DOT gnu AT tiscali DOT it>
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To:	cygwin AT cygwin DOT com
Subject:	ld: cannot perform PE operations on non PE output file 'bootsect'.
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Hi all,

I have a problem compiling the bootsect.S file above using the Makefile. 
Basically the project create a boot sector on floppy that print "Hello 
World" at compuer boot.
On Linux it works fine but in cygwin I go the following link problem:

*ld: cannot perform PE operations on non PE output file 'bootsect'.

*In the cygwin mail archive I saw question like this without response 
please can someone suggest me what is wrong in my Makefile and what I 
have to change?
To build the project do the following steps:

1. download the two file in a directory <dir>
2. in cygwin move to this directory
3. type make

In linux the final file bootsect should have a size of 512 bytes. Using 
the command

make disk

you can copy it on a floppy making it bootable.

PS
I am not subscribed to this mail list so, please, put my address in cc
Thanks in advance for your help.

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 name="Makefile"
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 filename="Makefile"

AS=as
LD=ld

all: bootsect

bootsect: bootsect.o
	@echo "[LD] $@"
	@$(LD) -Ttext 0x0 -s --oformat binary -o $@ $<

bootsect.o: bootsect.S
	@echo "[AS] $@"
	@$(AS) -o $@ $<

disk: image
	@echo "[DISK]"
	@dd if=image of=/dev/fd0 bs=512

image: bootsect
	@echo "[KERNEL IMAGE]"
	@cat bootsect > image

clean:
	@echo [CLEAN]
	@rm -rf *.o image bootsect

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Content-Type: text/plain;
 name="bootsect.S"
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Content-Disposition: inline;
 filename="bootsect.S"

.code16
.text

.global _start

_start:
    movb $0xE, %ah              # Function 0x0E of Interrupt 0x10
    movb $'H', %al              # write 'H'
    int  $0x10
    movb $'e', %al              # write 'e'
    int  $0x10
    movb $'l', %al              # write 'l'
    int  $0x10
    movb $'l', %al              # write 'l'
    int  $0x10
    movb $'o', %al              # write 'o'
    int  $0x10
    movb $' ', %al              # write ' '
    int  $0x10
    movb $'W', %al              # write 'W'
    int  $0x10
    movb $'o', %al              # write 'o'
    int  $0x10
    movb $'r', %al              # write 'r'
    int  $0x10
    movb $'l', %al              # write 'l'
    int  $0x10
    movb $'d', %al              # write 'd'
    int  $0x10
    movb $'!', %al              # write '!'
    int  $0x10
    movb $'!', %al              # write '!'
    int  $0x10
    movb $'!', %al              # write '!'
    int  $0x10
    ret

.org 510# Last 2 bytes of the boot sector.

boot_flag:		.word 0xAA55	# Flag indicating a boot disk


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