cross compiler problem..

suthers · Post by **suthers** » Fri Apr 25, 2008 3:21 pm

I have finally managed to make a cross compiler through bash.
I uses this script:

i586-elf-gcc -Wall -O -fstrength-reduce -fomit-frame-pointer -finline-functions -nostdinc -fno-builtin -o /MyOS/SOS/kernel.o -c /MyOS/SOS/kernel.c 
i586-elf-ld -T /MyOS/SOS/link.ld -O /MyOS/SOS/kernel.bin /MyOS/SOS/kernel_start.elf /MyOS/SOS/kernel.o 
exit 0

But it gives me this:

Code: Select all

: No such file or directory
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s: Assembler messages:
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:4: Warning: .type pseudo-op
used outside of .def/.endef ignored.
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:4: Error: junk at end of lin
e, first unrecognized character is `i'
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:14: Warning: .size pseudo-op
 used outside of .def/.endef ignored.
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:14: Error: junk at end of li
ne, first unrecognized character is `i'
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:16: Warning: .type pseudo-op
 used outside of .def/.endef ignored.
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:16: Error: junk at end of li
ne, first unrecognized character is `o'
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:26: Warning: .size pseudo-op
 used outside of .def/.endef ignored.
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:26: Error: junk at end of li
ne, first unrecognized character is `o'
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:28: Warning: .type pseudo-op
 used outside of .def/.endef ignored.
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:28: Error: junk at end of li
ne, first unrecognized character is `u'
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:50: Warning: .size pseudo-op
 used outside of .def/.endef ignored.
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:50: Error: junk at end of li
ne, first unrecognized character is `u'
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:52: Warning: .type pseudo-op
 used outside of .def/.endef ignored.
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:52: Error: junk at end of li
ne, first unrecognized character is `k'
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:100: Warning: .size pseudo-o
p used outside of .def/.endef ignored.
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:100: Error: junk at end of l
ine, first unrecognized character is `k'
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:102: Warning: .type pseudo-o
p used outside of .def/.endef ignored.
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:102: Error: junk at end of l
ine, first unrecognized character is `k'
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:115: Warning: .size pseudo-o
p used outside of .def/.endef ignored.
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:115: Error: junk at end of l
ine, first unrecognized character is `k'
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:117: Warning: .type pseudo-o
p used outside of .def/.endef ignored.
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:117: Error: junk at end of l
ine, first unrecognized character is `a'
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:121: Warning: .size pseudo-o
p used outside of .def/.endef ignored.
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:121: Error: junk at end of l
ine, first unrecognized character is `a'
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:123: Warning: .type pseudo-o
p used outside of .def/.endef ignored.
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:123: Error: junk at end of l
ine, first unrecognized character is `i'
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:131: Warning: .size pseudo-o
p used outside of .def/.endef ignored.
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:131: Error: junk at end of l
ine, first unrecognized character is `i'
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:133: Warning: .type pseudo-o
p used outside of .def/.endef ignored.
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:133: Error: junk at end of l
ine, first unrecognized character is `i'
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:141: Warning: .size pseudo-o
p used outside of .def/.endef ignored.
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:141: Error: junk at end of l
ine, first unrecognized character is `i'
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:143: Warning: .type pseudo-o
p used outside of .def/.endef ignored.
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:143: Error: junk at end of l
ine, first unrecognized character is `h'
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:154: Warning: .size pseudo-o
p used outside of .def/.endef ignored.
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:154: Error: junk at end of l
ine, first unrecognized character is `h'
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:156: Warning: .type pseudo-o
p used outside of .def/.endef ignored.
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:156: Error: junk at end of l
ine, first unrecognized character is `s'
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:168: Warning: .size pseudo-o
p used outside of .def/.endef ignored.
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:168: Error: junk at end of l
ine, first unrecognized character is `s'
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:174: Warning: .type pseudo-o
p used outside of .def/.endef ignored.
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:174: Error: junk at end of l
ine, first unrecognized character is `k'
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:184: Warning: .size pseudo-o
p used outside of .def/.endef ignored.
/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/ccqkC2xT.s:184: Error: junk at end of l
ine, first unrecognized character is `k'
i586-elf-ld: cannot open /MyOS/SOS/kernel.o: No such file or directory

The file does exist, when i access directly using bash and not through a script it finds the file.
Anybody know what the proble is?

Thanks in advance,

Jules

Solar · Post by **Solar** » Fri Apr 25, 2008 3:35 pm

You are running on Cygwin. You access your files unter /MyOS/SOS/, but the error messages refer to "/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/"? How come?

when i access directly using bash and not through a script it finds the file.

Please provide a copy & paste or screenshot of how you cd' into the working directory, call the bash script, and then call directly.

Oh, and try adding "#!/bin/bash" to the top of the script, just to be sure.

suthers · Post by **suthers** » Fri Apr 25, 2008 3:44 pm

Here's my the batch file i use:

Code: Select all

"C:\cygwin\MyOS\nasm-0.98.35-win32\nasm.exe" -o bootloader.bin bootloader.asm -f bin
"C:\cygwin\MyOS\nasm-0.98.35-win32\nasm.exe" -o kernel_start.elf kernel_start.asm -f elf -w+gnu-elf-extensions
C:\cygwin\bin\bash.exe --login -i "C:\cygwin\MyOS\SOS\build.bashrc"
copy /b "bootloader.bin"+"a.out" "SOS v0.0.1.img"
"C:\cygwin\MyOS\bochs-2.0.2\bochs.exe" -q -f "C:\cygwin\MyOS\bochs-2.0.2\bochsrc.txt"

don't see anything wrong with it and i added #!/bin/bash to the beginning of the script and made no diference.
Thanks in advance,

Jules

jnc100 · Post by **jnc100** » Fri Apr 25, 2008 3:47 pm

Solar wrote:You are running on Cygwin. You access your files unter /MyOS/SOS/, but the error messages refer to "/cygdrive/c/DOCUME~1/Jules/LOCALS~1/Temp/"? How come?

gcc uses your temporary directory to store the intermediate .s file it produces if you compile direct from .c to .o. You could use the -pipe option to bypass the production of an intermediate file. Don't think its the problem in this case though.

Regards,
John.

Zenith · Post by **Zenith** » Fri Apr 25, 2008 3:53 pm

A few things:

So it seems like, the assembler's choking on the compiler's output...

Note that the path /MyOS/* is an absolute path, which points to <cygwin folder>/MyOS/*. Do you really want this? Remember that these kinds of Unix paths are only valid in the bash shell. Make sure you're using this shell!!!

: No such file or directory

Very suspicious...

And does the compile >work< (not just finds the file, but actually builds) when using the bash script?

I had to edit this because two people had already responded before I finished my reply... I am slooooow...

suthers · Post by **suthers** » Fri Apr 25, 2008 3:54 pm

By adding pipe i got:

Code: Select all

: No such file or directory
{standard input}: Assembler messages:
{standard input}:4: Warning: .type pseudo-op used outside of .def/.endef ignored
.
{standard input}:4: Error: junk at end of line, first unrecognized character is
`i'
{standard input}:14: Warning: .size pseudo-op used outside of .def/.endef ignore
d.
{standard input}:14: Error: junk at end of line, first unrecognized character is
 `i'
{standard input}:16: Warning: .type pseudo-op used outside of .def/.endef ignore
d.
{standard input}:16: Error: junk at end of line, first unrecognized character is
 `o'
{standard input}:26: Warning: .size pseudo-op used outside of .def/.endef ignore
d.
{standard input}:26: Error: junk at end of line, first unrecognized character is
 `o'
{standard input}:28: Warning: .type pseudo-op used outside of .def/.endef ignore
d.
{standard input}:28: Error: junk at end of line, first unrecognized character is
 `u'
{standard input}:50: Warning: .size pseudo-op used outside of .def/.endef ignore
d.
{standard input}:50: Error: junk at end of line, first unrecognized character is
 `u'
{standard input}:52: Warning: .type pseudo-op used outside of .def/.endef ignore
d.
{standard input}:52: Error: junk at end of line, first unrecognized character is
 `k'
{standard input}:100: Warning: .size pseudo-op used outside of .def/.endef ignor
ed.
{standard input}:100: Error: junk at end of line, first unrecognized character i
s `k'
{standard input}:102: Warning: .type pseudo-op used outside of .def/.endef ignor
ed.
{standard input}:102: Error: junk at end of line, first unrecognized character i
s `k'
{standard input}:115: Warning: .size pseudo-op used outside of .def/.endef ignor
ed.
{standard input}:115: Error: junk at end of line, first unrecognized character i
s `k'
{standard input}:117: Warning: .type pseudo-op used outside of .def/.endef ignor
ed.
{standard input}:117: Error: junk at end of line, first unrecognized character i
s `a'
{standard input}:121: Warning: .size pseudo-op used outside of .def/.endef ignor
ed.
{standard input}:121: Error: junk at end of line, first unrecognized character i
s `a'
{standard input}:123: Warning: .type pseudo-op used outside of .def/.endef ignor
ed.
{standard input}:123: Error: junk at end of line, first unrecognized character i
s `i'
{standard input}:131: Warning: .size pseudo-op used outside of .def/.endef ignor
ed.
{standard input}:131: Error: junk at end of line, first unrecognized character i
s `i'
{standard input}:133: Warning: .type pseudo-op used outside of .def/.endef ignor
ed.
{standard input}:133: Error: junk at end of line, first unrecognized character i
s `i'
{standard input}:141: Warning: .size pseudo-op used outside of .def/.endef ignor
ed.
{standard input}:141: Error: junk at end of line, first unrecognized character i
s `i'
{standard input}:143: Warning: .type pseudo-op used outside of .def/.endef ignor
ed.
{standard input}:143: Error: junk at end of line, first unrecognized character i
s `h'
{standard input}:154: Warning: .size pseudo-op used outside of .def/.endef ignor
ed.
{standard input}:154: Error: junk at end of line, first unrecognized character i
s `h'
{standard input}:156: Warning: .type pseudo-op used outside of .def/.endef ignor
ed.
{standard input}:156: Error: junk at end of line, first unrecognized character i
s `s'
{standard input}:168: Warning: .size pseudo-op used outside of .def/.endef ignor
ed.
{standard input}:168: Error: junk at end of line, first unrecognized character i
s `s'
{standard input}:174: Warning: .type pseudo-op used outside of .def/.endef ignor
ed.
{standard input}:174: Error: junk at end of line, first unrecognized character i
s `k'
{standard input}:184: Warning: .size pseudo-op used outside of .def/.endef ignor
ed.
{standard input}:184: Error: junk at end of line, first unrecognized character i
s `k'
i586-elf-ld: cannot open /MyOS/SOS/kernel.o: No such file or directory

So what am i doing wrong?
Thanks in advance,

Jules

Zenith · Post by **Zenith** » Fri Apr 25, 2008 3:57 pm

And where does this:

Code: Select all

i586-elf-gcc -Wall -O -fstrength-reduce -fomit-frame-pointer -finline-functions -nostdinc -fno-builtin -o /MyOS/SOS/kernel.o -c /MyOS/SOS/kernel.c
i586-elf-ld -T /MyOS/SOS/link.ld -O /MyOS/SOS/kernel.bin /MyOS/SOS/kernel_start.elf /MyOS/SOS/kernel.o
exit 0

fit into your batch script?

Code: Select all

"C:\cygwin\MyOS\nasm-0.98.35-win32\nasm.exe" -o bootloader.bin bootloader.asm -f bin
"C:\cygwin\MyOS\nasm-0.98.35-win32\nasm.exe" -o kernel_start.elf kernel_start.asm -f elf -w+gnu-elf-extensions
C:\cygwin\bin\bash.exe --login -i "C:\cygwin\MyOS\SOS\build.bashrc"
copy /b "bootloader.bin"+"a.out" "SOS v0.0.1.img"
"C:\cygwin\MyOS\bochs-2.0.2\bochs.exe" -q -f "C:\cygwin\MyOS\bochs-2.0.2\bochsrc.txt"

suthers · Post by **suthers** » Fri Apr 25, 2008 4:11 pm

C:\cygwin\MyOS\SOS\build.bashrc contains my bash script.
Thanks in advance Jules

Zenith · Post by **Zenith** » Fri Apr 25, 2008 4:26 pm

And does the compile >work< (not just finds the file, but actually builds) when using bash directly as opposed to your script? Otherwise, I don't think there should be a problem since your object/source paths are absolute to begin with.

Just trying to figure out if this is a directory problem or a compiler problem...

suthers · Post by **suthers** » Sat Apr 26, 2008 9:02 am

Ok i went straight through bash without using a script, and used the -pipe option i still got the same thing but without the "No Such File or Directory".
Though i think that has to be wrong because it tries to compile it anyway...
Any ideas whats wrong?
Thanks in advance,

Jules

Combuster · Post by **Combuster** » Sat Apr 26, 2008 9:42 am

The exact message is contained within the troubleshooting section of GCC Cross-Compiler, so I really suggest you have a look at that.

suthers · Post by **suthers** » Sat Apr 26, 2008 11:33 am

Ok I've tried to rebuild my cross compiler too fix the problem, because i am definitely using the right compiler...
but now i get an error saying:
'Error: C compiler cannot create executables'
Any ideas whats gone wrong this time.
Thanks in advance,

Jules

Combuster · Post by **Combuster** » Sat Apr 26, 2008 3:53 pm

My guess is that you have overwritten cygwin's toolchain with half a crosscompiling toolchain.
Since you probably don't use cygwin for other purposes, your best bet is to remove it completely, reinstall it, and then follow the tutorial again (this time, without omissions)

suthers · Post by **suthers** » Sat Apr 26, 2008 4:33 pm

how do i make a my cross compiler without destroying the normal tool chain?
Thanks in advance,

Jules

pcmattman · Post by **pcmattman** » Sat Apr 26, 2008 10:02 pm

That's what --prefix is for. It'll install to that folder (I use /usr/cross in cygwin, but you could use anything you want - even a subdirectory of your OS folders).