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

Sat Apr 15 02:22:42 PDT 2017

2017-04-15 10:17 GMT+02:00 Michele Bucca <michele.bucca at gmail.com>:
>
> 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

My Original problem was this:

I'm having problems building MPC for the same reason: the
configure is like this:

../mpc-1.0.3/configure --host=i486-linux-musl
--build=x86_64-linux-gnu
--prefix=/home/michele/tmp/musl-native-toolchain/native/i486-linux-musl/

but instead of giving me a i486-linux-musl compatible library it
creates one that is compatible with my host system