-----Original Message-----
From: Dmitry Karasik
Sent: Sunday, May 29, 2016 5:58 AM
To: [email protected]
Cc: [email protected]
Subject: Re: [Pdl-devel] [OT] Prima-1.46 with perl-5.24.0 on Windows
>> It's 'gcc', but I think that when I do 'perl Makefile.PL
>> LIBS="-L/lib/location -l...." it overwrites the libs that you intend to
>> specify with exactly those libs that I've specified.
>> So, if i don't specify '-lgomp' in my LIBS arg, then it's not present
>> when needed. (I haven't verified this, btw.)
>
> Yes indeed, it seems that adding LIBS as arguments can only overwrite, not
> append ldflags as one might want here. I don't like and don't understand
> that perl feature, and therefore added EXTRA_LDFLAGS to Prima. I believe
> you can safely use it for prepending your /lib/location instead.
That nearly works.
I initially tried "EXTRA_LDFLAGS=-LC:/lib/location" but it seems that
because I use static libraries I have to link to libz - and Prima doesn't
provide the '-lz' argument.
So I tried "EXTRA_LDFLAGS=-LC:/lib/location -lz", but that places libz at
the head of the queue, and I think it needs to be *appended* to the other
end of the queue - so I still got "undefined references" to various libz
symbols.
It's unusual that there's a need to specify the location of the libraries as
that location is specified in $Config{libpth} and perl therefore has no
problem finding them.
I assume it's needed only because the configure process (conducted by the
Makefile.PL) is unaware of that location.
It's no big deal for me - my Prima build is scripted, and it doesn't really
bother me what that script contains.
And things are currently working fine if I prepend '-lgomp' to the LIBS arg
I give to Makefile.PL.
Cheers,
Rob
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