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Re: gdb darwin target on Linux host?

On Wed, 2010-10-20 at 16:20 +0200, Tristan Gingold wrote:
> Could you post the log messages ?  I suppose that if no binary is
> built, then an error has occurred.
> Not sure why you try to build such a tool, as it would be basically
> useless to debug.

found the bug - there must be some typo/bug in your build system as it
does not build the gdb/ directory at all with --target=x86_64-darwin!

I had to run configure in topdir first then after it finishes cd gdb,
then rerun same configure (--target=x86_64-darwin) in gdb dir, make,
cd .. && make install.

This worked and gives me:

l /usr/local/gdb/bin/
total 44032
drwxr-xr-x 2 root root     4096 2010-10-20 16:22 ./
drwxr-xr-x 6 root root     4096 2010-10-20 16:05 ../
-rwxr-xr-x 1 root root 17567402 2010-10-20 16:22
-rwxr-xr-x 1 root root 17567431 2010-10-20 16:22

BUT, there is another issue now. The so generated
x86_64-apple-darwin-gdb* does not recognize 64bit binaries:

(e.g. /home/exchange/ls is the binary I want to debug)

/usr/local/gdb/bin/x86_64-apple-darwin-gdb /home/exchange/ls
GNU gdb (GDB) 7.2
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show
and "show warranty" for details.
This GDB was configured as "--host= --target=x86_64-apple-darwin".
For bug reporting instructions, please see:
"/home/exchange/ls": not in executable format: File format not
Setting up the environment for debugging gdb.

WHY it says:

"/home/exchange/ls": not in executable format: File format not


as I built for the darwin target?

file /home/exchange/ls
/home/exchange/ls: Mach-O fat file with 2 architectures

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