[erlang-questions] can i tell what version or erlang a .beam was compiled with?

Garry Hodgson <>
Fri May 8 22:00:03 CEST 2015


On 05/08/2015 02:28 PM, Roger Lipscombe wrote:
> On 8 May 2015 at 18:41, Garry Hodgson <> wrote:
>> is there any way i can determine from a .beam file
>> what version of erlang was used to compile it? or, for that
>> matter, any other way to rule out or confirm this possibility?
> beam_lib has what you need:
> ...
> What's that "4.9.4"? It's the compiler version...
>
> <0.39.0> () 6> code:which(compile).
> "/usr/local/erlang-R16B03-1/lib/compiler-4.9.4/ebin/compile.beam"
ahh, perfect. i looked at beam_lib, but missed that.
thanks very much.


-- 
Garry Hodgson
Lead Member of Technical Staff
AT&T Chief Security Office (CSO)

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