Re: [gentoo-embedded] mpfr cross-compiles, but bails out on install

[Christopher Friedt]

I have another patch now that allows mpfr to compile properly - time 
will tell as to whether disabling rpath will create any errors down the 
road, but I can't imagine that being the case, since it's basically just 
a compile-time override for LD_LIBRARY_PATH. As long as that is set 
properly by the environment, then any application should have no 
problems linking dynamically.

http://forums.gentoo.org/viewtopic-p-4775252.html#4775252

~/Chris

Christopher Friedt wrote:
> Hi everyone,
>
> I'm cross compiling using arm-softfloat-linux-gnu, with the usual
> procedure using a SYSROOT of /usr/arm-softfloat-linux-gnu and the xmerge
> script.
>
> First of all, I should ask - has anyone found a fix for cross-compiling
> mpfr already? If so how? ... would something like
> ECONF_EXTRA="--with-gmp-lib=DIR" work?
>
> The original problem is exactly related to Simon's here:
>
> http://forums.gentoo.org/viewtopic-t-639572.html?sid=acbcac0d727bdaafa52ffc784641c0e7
>
>
> Mpfr would originally not compile because it linked to
> /usr/lib/libgmp.so always, instead of the libgmp.so in the compiler's
> search path.
>
> That was due to -rpath /usr/lib being present, so i created a very
> simple patch to remove the rpath (was that a bad idea?).
>
> In any event, mpfr-2.3.0_p3.ebuild now looks like [1], while
> mpfr-2.3.0_p3-disable-rpath-patch looks like [2].
>
> The patch applies perfectly and the compile is successful, but then
> during the install phase, the installer bails out with message [3].
>
> There is no .libs/libmpfr.lai file at all, but there is of course a
> .libs/libmpfr.la file.
>
> Why would the .la file suddenly be named .lai? Is it just a copy?
>
> It seems like an easy enough patch to just copy from one directory to
> another in Makefile.in, but I thought I'd write the list first and see
> if anyone else has a more elegant solution.
>
> ~/Chris
>
>
> =======================================[1]======================================
>
> src_compile()
> {
> ...
>     tc-is-cross-compiler && epatch
> "${FILESDIR}"/${PN}-${MY_PV}_p${PLEVEL}-disable-rpath.patch           ||
> die "disable rpath failed"
> }
>
> ========================================[2]=====================================
>
> --- Makefile.in_old     2008-01-25 02:59:01.000000000 +0100
> +++ Makefile.in 2008-01-25 02:59:21.000000000 +0100
> @@ -394,7 +394,7 @@
>           rm -f "$${dir}/so_locations"; \
>         done
>  libmpfr.la: $(libmpfr_la_OBJECTS) $(libmpfr_la_DEPENDENCIES)
> -       $(LINK) -rpath $(libdir) $(libmpfr_la_LDFLAGS)
> $(libmpfr_la_OBJECTS) $(libmpfr_la_LIBADD) $(LIBS)
> +       $(LINK) $(libmpfr_la_LDFLAGS) $(libmpfr_la_OBJECTS)
> $(libmpfr_la_LIBADD) $(LIBS)
>  tuneup$(EXEEXT): $(tuneup_OBJECTS) $(tuneup_DEPENDENCIES)
>         @rm -f tuneup$(EXEEXT)
>         $(LINK) $(tuneup_LDFLAGS) $(tuneup_OBJECTS) $(tuneup_LDADD) $(LIBS)
>
>
> =================================[3]================================
>  >>> Source compiled.
>  >>> Test phase [not enabled]: dev-libs/mpfr-2.3.0_p3
>
>  >>> Install mpfr-2.3.0_p3 into
> /var/tmp/portage/dev-libs/mpfr-2.3.0_p3/image/ category dev-libs
> .......
> /usr/bin/install -c .libs/libmpfr.lai
> /var/tmp/portage/dev-libs/mpfr-2.3.0_p3/image//usr/lib/libmpfr.la
> /usr/bin/install: cannot stat `.libs/libmpfr.lai': No such file or
> directory
> make[2]: *** [install-libLTLIBRARIES] Error 1
>
>
-- 
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