Date: Fri, 22 Sep 2000 18:07:48 +0300 From: Maxim Sobolev <sobomax@FreeBSD.org> To: Espen Skoglund <esk@ira.uka.de> Cc: ports@FreeBSD.org Subject: Re: Modifying linkopts in libtool Message-ID: <39CB75C4.FD5FA957@FreeBSD.org> References: <14795.15262.123604.865457@i30nb2.ira.uka.de> <39CB6ADF.2976F4EF@FreeBSD.org> <14795.28046.251154.85719@i30nb2.ira.uka.de> <39CB72B3.4B256183@FreeBSD.org> <14795.29665.324923.882046@i30nb2.ira.uka.de>
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Espen Skoglund wrote:
> [Maxim Sobolev]
> > Espen Skoglund wrote:
> >> [Maxim Sobolev]
> >>> Espen Skoglund wrote:
> >>>> Hi,
> >>>>
> >>>> I was trying to create a port containing a shared library using
> >>>> the _fini() function for cleanup. The package was also using
> >>>> libtool, and it had put `linkopts=-nostdlib' in its ltmain.sh in
> >>>> order avoid conflicts with the _fini() function in crtbeginS.o.
> >>>> However, when I specify USE_LIBTOOL in the port-makefile, the
> >>>> port-version of libtool is used instead of the one inside the
> >>>> package. Does anyone have any suggestion of how to cope with
> >>>> this? I thought about modifying the package makefile or
> >>>> something, but this is sort of troublesome because libtool
> >>>> ignores most of the command line options that you pass to it.
> >>>> The soultion that I've currently come up with is to add a
> >>>> pre-build target that patches the produced libtool script to
> >>>> include the linkopts line above, but I would prefer something
> >>>> that could be incorporated into the package.
> >>
> >>> Add `CONFIGURE_ENV= LDFLAGS="linkopts=-nostdlib"' into port's
> >>> Makefile or patch appropriate Makefile.in.
> >>
> >> Well, this won't work. First of all, the linkopts is a shell
> >> variable which is defined in the generated libtool script. Second,
> >> setting LDFLAGS or anything in the Makefile won't work because the
> >> libtool script tends to ignore most of the arguments given to gcc.
> >> As far as I can tell by a quick look through the script, the
> >> command line for linking is produced by:
> >>
> >> archive_cmds="\$CC -shared \$compile_rpath \$libobjs \$deplibs \
> >> \$linkopts \${wl}-soname \$wl \$soname -o \$lib"
> >>
> >> which does not really give any room for extra flags.
>
> > Oh, I see my error. Here is right version:
> > `CONFIGURE_ENV= LDFLAGS="-nostdlib"'
>
> Does not work since the libtool script ignores the -nostdlib flag when
> producing the actual command line.
Oh, ok:
post-configure:
${PERL} -pi -e 's|\$$linkopts|\$$linkopts -nostdlib|' ${WRKSRC}/libtool
-Maxim
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