nm does not handle binaries compiled with GCC

[Colin Fowler]

With ACK, nm works fine. with GCC, it produces garbage output.

am I doing something wrong? Even on a simple helloword file nm doesn't work

Colin

[Erik van der Kouwe]

Hi,

ACK and GNU use different variations of the a.out binary format, with
different symbol tables. Use ACK tools (like nm) for ACK binaries and
GNU tools (like /usr/gnu/bin/gnm) for GNU binaries.

With kind regards,
Erik

[Elethiomel]

NM ;)

It's gnm for GNU nm.

Colin

[Colin Fowler]

Hi Erik,
I need to start getting more sleep. I actually had to read the binutils
Makefile to figure that it. Stupid of me as GNU ar is gar etc.

Colin

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[Ben Gras]

Extra note - if you're using nm to find in which function a pc /
stacktrace points to, use the 'unstack' script. It completely decodes
a stacktrace for you (you can copypaste it from /var/log/messages) and
knows the difference between ack and gcc binaries.