[Clfs-support] [Native Compiler] Problem Cross-compiling GMP MPFR and MPC

Sat Apr 15 01:17:09 PDT 2017

Il 15 apr 2017 9:58 AM, "akhiezer" <lfs65 at cruziero.com> ha scritto:
>
> > From: Michele Bucca <michele.bucca at gmail.com>
> > Date: Sat, 15 Apr 2017 09:18:24 +0200
> > To: CLFS Support <clfs-support at lists.clfs.org>
> > Subject: Re: [Clfs-support] [Native Compiler] Problem Cross-compiling
GMP
> >  MPFR and MPC
> >
> > Il 14 apr 2017 5:34 PM, "William Harrington" <kb0iic at berzerkula.org> ha
scritto:
> > >
> > > On Fri, April 14, 2017 13:27, Michele Bucca wrote:
> > > > Il 14 apr 2017 3:15 PM, "William Harrington" <kb0iic at berzerkula.org>
ha
> > > > scritto:
> > > >>
> > > >> On Fri, April 14, 2017 08:15, Michele Bucca wrote:
> > > >> > Hello Everyone,
> > > >> >
> > > >> > I'm trying to cross-compile a native host-x-host compiler with
the
> > > >> > musl-libc library
> > > >> >
> > > >> > To do that I have to
> > > >> >
> > > >> > 1) compile a cross-compiler. (Done)
> > > >> > 2) Install GMP, MPFR and MPC on the cross-compiler
> > > >> > 3) make a host-x-host cross-compile to make a native compiler
> > > >> >
> > > >>
> > > >> Hello Michele,
> > > >>
> > > >> I also wanted to add, in case there is any confusion, that this
may shed
> > > >> some light:
> > > >>
> > > >> https://gcc.gnu.org/onlinedocs/gccint/Configure-Terms.html
> > > >>
> > > >> Another option, which may be better, is to build gmp, mpfr and mpc
> > > >> in-tree
> > > >> with the GCC source when you build it.  Extract mpfr, gmp and mpc
into
> > > >> the
> > > >> source code so it is laid out:
> > > >>
> > > >> gcc-5.3.0/gmp
> > > >> gcc-5.3.0/mpfr
> > > >> gcc-5.3.0/mpc
> > > >> gcc-5.3.0/isl (if also inclulding isl)
> > > >>
> > > >> then configure:  mkdir gcc-build && cd ../gcc-build && (needed
flags
> > > >> here)
> > > >> ../gcc-5.3.0/configure (configure options here excluding --with-gmp
> > > >> --with-mpfr --with-mpc)
> > > >>
> > > >
> > > > As I want to build a static version of GCC I will specify these
variables:
> > > >
> > > > export CC="i486-linux-musl-gcc -static -Wl,-Bstatic -static-libgcc"
> > > > export CXX="i486-linux-musl-gcc -static -Wl,-Bstatic -static-libgcc"
> > > >
> > > > will this have weird effects if I extract those three libraries
source
> > > > inside the GCC source tree and compile them with it?
> > > > --Michele
> > > >
> > > >> Sincerely,
> > > >>
> > > >> William
> > >
> > > Hello Michele,
> > >
> > > GCC will use the gmp/mpfr/mpc in-tree without issue. I do it quite a
bit
> > > with my own cross-compiles. Just make sure you follow the GCC
installation
> > > documentation regarding gmp/mpfr/mpc at:
> > >
> > > https://gcc.gnu.org/install/prerequisites.html
> > >
> > > Also, since this mailing list is specific to the CLFS books, you may
wish
> > > to mention which book you are following as a guide for the musl
> > > cross-toolchain build.
> >
> > I'm following CLFS-Embedded (Development)
>
>
> You _say_ here that you are 'following' clfs-embedded-dev ... tho'
> don't say _which_ variant of it ...
>

CLFS-EMBEDDED GIT-20161228-X86

>
> >
> > >
> > > Sincerely,
> > >
> > > William
> >
> > To compile GCC (the first pass) first I export some variables
> >
> > export CC="i486-linux-musl-gcc -static -Wl,-Bstatic -static-libgcc"
> > export CXX="i486-linux-musl-g++ -static -Wl,-Bstatic -static-libgcc"
> >
> > This should make the gcc executable static
> >
> > ../gcc-6.2.0/configure \
> >   --prefix=/home/michele/tmp/musl-native-toolchain/output \
> >   --build=x86_64-linux-gnu \
> >   --host=i486-linux-musl \
> >   --target=i486-linux-musl \
> >   --disable-nls  \
> >   --disable-shared \
> >   --without-headers \
> >   --with-newlib \
> >   --disable-decimal-float \
> >   --disable-libgomp \
> >   --disable-libmudflap \
> >   --disable-libssp \
> >   --disable-libatomic \
> >   --disable-libquadmath \
> >   --disable-threads \
> >   --enable-languages=c \
> >   --disable-multilib \
> >
>
>
>  ... but here you are _clearly_ _not_ 'following' clfs-embedded-dev:
> where, e.g., are the mpfr/mpc/gmp .

What I wanted to do in the first place was to install libgmp libmpfr and
libmpc inside the toolchain so that it could be used to build a static gcc
binary

>
>
> > then I give the commands
> >
> > make all-gcc all-target-libgcc
> >
> >
> > but the compile process fails with this error
> >
> > # If this is the top-level multilib, build all the other
> > # multilibs.
> > i486-linux-musl-gcc   -g -O2 -O2  -g -O2 -DIN_GCC    -W -Wall
> > -Wno-narrowing -Wwrite-strings -Wcast-qual -Wstrict-prototypes
> > -Wmissing-prototypes -Wold-style-definition  -isystem ./include
> > -fpic -mlong-double-80 -DUSE_ELF_SYMVER -g -DIN_LIBGCC2
> > -fbuilding-libgcc -fno-stack-protector -Dinhibit_libc  -fpic
> > -mlong-double-80 -DUSE_ELF_SYMVER -I. -I. -I../.././gcc
> > -I../../../gcc-6.2.0/libgcc -I../../../gcc-6.2.0/libgcc/.
> > -I../../../gcc-6.2.0/libgcc/../gcc
> > -I../../../gcc-6.2.0/libgcc/../include
> > -I../../../gcc-6.2.0/libgcc/../libdecnumber/no
> > -I../../../gcc-6.2.0/libgcc/../libdecnumber -DHAVE_CC_TLS  -DUSE_TLS
> > -o decLibrary.o -MT decLibrary.o -MD -MP -MF decLibrary.dep -c
> > ../../../gcc-6.2.0/libgcc/../libdecnumber/decLibrary.c
> > ../../../gcc-6.2.0/libgcc/../libdecnumber/decLibrary.c:27:24: fatal
> > error: decimal128.h: No such file or directory
> >  #include "decimal128.h"
> >                         ^
> > compilation terminated.
> > Makefile:612: set di istruzioni per l'obiettivo "decLibrary.o" non
riuscito
> > make[1]: *** [decLibrary.o] Errore 1
> > make[1]: uscita dalla directory
> > "/home/michele/tmp/musl-native-toolchain/obj-gcc/i486-linux-musl/libgcc"
> > Makefile:12314: set di istruzioni per l'obiettivo "all-target-libgcc"
> > non riuscito
> > make: *** [all-target-libgcc] Errore 2
> >
> > I don't use the sysroot so I can move the toolchain in a different
> > directory without breaking it. Yes I know that the host and target
> > swith are the same..I want to obtain a compiler like the one that is
> > used to create a CLFS temporary system.
> >
> >
> > See Here:
> > http://www.clfs.org/view/CLFS-3.0.0-SYSVINIT/x86/temp-system/gcc.html
> >
>
>
>  ... and now you're referring to a non-embedded, non-dev book.
>
>
> >
> > Any help? Thanks
> >
>
>
> Are you trying to follow clfs-embedded-dev-x86, but are trying to do
> mpfr/mpc/gmp as separate steps from gcc ?

See above

>
>
> Have you built clfs-embedded-dev-x86 as-is, from start to end, at least
> once successfully yet, prior to any deviations from the book?
>
Yes
>
-- Michele _______________________________________________
> Clfs-support mailing list
> Clfs-support at lists.clfs.org
> http://lists.clfs.org/listinfo.cgi/clfs-support-clfs.org
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