Hazel Russman <hazeldebian <at> googlemail.com> writes:
>
> I am trying to build a 64-bit lfs-7.4 system using a host system based
> on Slackware-14. Currently I am having a problem with the first pass of
> building gcc. During the internal build of libmpc, a search is made for
> /usr/lib64/libgmp.la. It is not found, so the build crashes.
>
> libtool: link: ar rc .libs/libmpc.a abs.o acos.o acosh.oo add_ui.o
> arg.o asin.o asinh.o atan.o atanh.o clear.o cmcos.o cosh.o div_2si.o
> div_2ui.o div.o div_fr.o div_ui.o _sub.o get_prec2.o get_prec.o
> get_version.o get_x.o imag.tr.o log.o log10.o mem.o mul_2si.o mul_2ui.o
> mul.o mul_fr_ui.o neg.o norm.o out_str.o pow.o pow_fr.o pow_ld.o
> pow_ow_z.o proj.o real.o urandom.o set.o set_prec.o set_str.oo sin_cos.o
> sinh.o sqr.o sqrt.o strtoc.o sub.o sub_fr.o snh.o uceil_log2.o ui_div.o
> ui_ui_sub.o
> libtool: link: ranlib .libs/libmpc.a
> /bin/sed: can't read /usr/lib64/libgmp.la: No such file or directory
> libtool: link: `/usr/lib64/libgmp.la' is not a valid libtool archive
> make[4]: *** [libmpc.la] Error 1
> make[4]: Leaving directory `/mnt/lfs/sources/gcc-build/mpc/src
> make[3]: *** [all-recursive] Error 1
> make[3]: Leaving directory `/mnt/lfs/sources/gcc-build/mpc
> make[2]: *** [all] Error 2
> make[2]: Leaving directory `/mnt/lfs/sources/gcc-build/mpc
> make[1]: *** [all-mpc] Error 2
> make[1]: Leaving directory `/mnt/lfs/sources/gcc-build'
> make: *** [all] Error 2
>
> I have tried two experimental builds. In the first, I used two
> additional configuration parameters in the hope that they would tell the
> compiler the correct place to look for information on gmp:
> --with_gmp_include=$(pwd)/gmp and --with_gmp_lib=$(pwd)/gmp/.libs. But
> this did not have any effect on the error.
>
> For the second try, I simply put a symbolic link into /usr/lib64
> pointing to /mnt/lfs/sources/gcc-build/gmp/.libs/libgmp.la. Then the
> build was successful.
>
> I have not installed this build because it was not done "by the book"
> and I am afraid of polluting my tool chain. Can someone please tell me:
> 1) If it is safe to install it?
> 2) Why the error occurred, given that the configuration options and
> global edits set out in the book should prevent this kind of
> back-reference to the host system?
> 3) What would be the proper way to correct an error like this? My way
> feels rather kludgy.
>
G'day,
I was coming across that error while trying to cross compile mpc for later use
with gcc using Optware building system (nothing to do with LFS I agree). In my
case it was mpc which did complain but mpfr was the one causing it. In the
libmpfr.la there was the path to /opt/lib/libgmp.la (/opt/lib in my case cause
of Optware). MPC seems to look at the libmpfr.la (and libgmp.la) I assume.
--- <path to the libmpfr.la> ---
...
# Libraries that this one depends upon.
dependency_libs=' -L<some-path-to-my-project> opt/lib/libgmp.la'
...
---------------------------
I still don't know the source of the problem but I simply did sed the
/opt/lib/*.la out of the libmpfr.la file and mpc and gcc compiled fine. And I
may add that "/opt/lib/libgmp.la" is is not in 'dependency_libs the libmpfr.la
file right after compilation in ./src/.libs/libmpfr.la and ./src/libmpfr.la.
Instead the complete path to were it really gets copied. It seems to happen
during the "$make install" phase.
Maybe that a) helps someone else too - as did your post me - and b) maybe
someone
with deeper knowledge of libs/libtool and compiling knows what's the source of
the problem is. The method with linking to - in my case - /opt/lib would be a
bit more work since I do cross compile for i686 and x86_64 bit.
Additionally, in libmpc.la the two paths to /opt/lib/libgmp.la and
/opt/lib/libmpfr.la appear again but gcc seems not to mind and compiles fine
anyway.
Below the sed I used, although probaly obvious:
$ sed -i 's%^\(dependency_libs=.*\) \(/opt/lib/.*la\)%/\1%g' \
/home/jane/Projects/slug/optware/asustor-i686/staging/opt/lib/libmpfr.la
System involved:
- Ubuntu 12.04 32-bit, 4 logical CPU's, 4GB RAM (Parallels VM)
- cross compiler : gcc 4.6.3
- latest Optware and latest GMP,MPFR and MPC
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