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Re: texinfo-6.0.91 pretest

From: Eli Zaretskii
Subject: Re: texinfo-6.0.91 pretest
Date: Sat, 02 Jan 2016 15:53:03 +0200

> Cc: address@hidden, address@hidden
> From: Ken Brown <address@hidden>
> Date: Sat, 2 Jan 2016 08:31:26 -0500
> >> -XSParagraph_la_LDFLAGS=-no-undefined -avoid-version -module 
> >> $(PERL_CONF_cccdlflags)
> >> +XSParagraph_la_LDFLAGS=-no-undefined -avoid-version -module 
> >> $(PERL_CONF_cccdlflags) -L$(PERL_INC) -lperl
> >
> > I don't think it's correct to use literally "-L$(PERL_INC) -lperl",
> > although it might be in many installations.  The correct values should
> > obtained from "perl -V:<variable>", and I already provided the
> > variables that should be used here.  E.g., if the user has Active Perl
> > installed, like I do, the "-lperl" part should be replaced with
> > "-lperl520" (for Perl 5.20.X).
> On Cygwin, "perl -V:libperl" returns "libperl='cygperl5_22.dll';", but 
> you wouldn't guess from this that you should use "-lperl" for linking 
> (i.e., the actual import library is libperl.dll.a).

That's an unfortunate choice by the Cygwin Perl maintainers, I'd say.
Why isn't the import library named libcygperl.dll.a or something

> > Moreover, on Posix hosts I'm not sure it's TRT to link against
> > libperl.a, as that's a static library, and Unix doesn't need import
> > libraries to link against shared libraries at run time.
> Are you sure that using -lperl on Posix hosts would link against 
> libperl.a rather than libperl.so?  I thought the whole point of the '-l' 
> was so that the linker would choose the appropriate library, depending 
> on the context.

You may be right.  I think we need to talk to a Perl expert (which I
am not).

I think the Windows ports will have to use PERL_EXT_LDFLAGS when
configuring Texinfo.

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