Gcc on Blue Gene / Q

[Jonathan Wakely]

On 21 February 2018 at 22:33, Fatih Ertinaz wrote:
> Dear all
>
> I am trying to install Gcc-5.5.0 on a BGQ Cluster using a build script
> which successfully installs Gcc-4.8.1.
>
> I didn't change much of that script, just the versions of required libs:
> binutils-2.30
> gmp-6.1.2
> mpfr-4.0.1
> mpc-1.1.0
> isl-0.17.1
> cloog-0.18.

Did you read the prerequisites requirements for gcc-5.5.0? Because it
doesn't need cloog, and it requires isl 0.14 or 1.12.2 not 0.17.1

See the file gcc-5.5.0/gcc/doc/install.texi, or just follow the
suggestions in https://gcc.gnu.org/wiki/InstallingGCC


> In my attempts, make fails at:
> /usr/bin/install -c -m 644 unwind.h
> ...../gcc-5.5.0/lib/gcc/powerpc64-bgq-linux/5.5.0/include
> make[2]: Leaving directory `...../gcc/gcc-5.5.0-work/powerpc64-bgq-linux/libgcc'
> /bin/sh: line 3: cd: powerpc64-bgq-linux/libstdc++-v3: No such file or directory
> make[1]: *** [install-target-libstdc++-v3] Error 1
>
> "libstdc++-v3" exists in gcc-5.5.0 source folder. So it comes with the
> package however is not copied to gcc-5.5.0-work folder somehow.

It's not supposed to get copied anywhere, the gcc-5.5.0/libstdc++-v3
directory contains the source code. powerpc64-bgq.linux/libstdc++-v3
is  supposed to contain the compiled objects and libraries.

> Also from the log.make:
> checking whether the ...../gcc/gcc-5.5.0-work/./gcc/xgcc
> -B/..../gcc/gcc-5.5.0-work/./gcc/
> -B/..../gcc-5.5.0/powerpc64-bgq-linux/bin/
> -B/..../gcc-5.5.0/powerpc64-bgq-linux/lib/ -isystem
> /..../gcc-5.5.0/powerpc64-bgq-linux/include -isystem
> /..../gcc-5.5.0/powerpc64-bgq-linux/sys-include    linker
> (/..../gcc/gcc-5.5.0-work/./gcc/collect-ld) supports shared
> libraries... yes
> checking whether -lc should be explicitly linked in... no
> checking dynamic linker characteristics... no
> checking dynamic linker characteristics... make[1]: Leaving directory
> `...../gcc/gcc-5.5.0-work'
>
> Any help is much appreciated

We don't know what your script does so can't really help.

> Fatih Ertinaz
>
> Configuration flags:
> configure --prefix $INSTALLDIR --disable-bootstrap
>               --program-suffix=${GCC_VER} --enable-lto \
>               --disable-checking --enable-shared \
>               --enable-threads=posix --enable-gomp \
>               --target=powerpc64-bgq-linux \
>               --host=powerpc64-linux-gnu \
>               --build=powerpc64-linux-gnu \

Those host and build values look wrong.


>               --enable-secureplt --disable-libmudflap \
>               --disable-libspp --disable-libgcj \
>               --enable-languages=c,c++,fortran,lto \
>               --disable-multilib --with-long-double-128 \
>               --with-headers=${SYSROOT}/sys-include \
>               --with-libs=${SYSROOT}/lib \
>               --with-bin=${SYSROOT}/bin \
>               --with-sbin=${SYSROOT}/sbin \
>               --with-gmp=$INSTALLDIR/requiredLibs \
>               --with-mpc=$INSTALLDIR/requiredLibs \
>               --with-mpfr=$INSTALLDIR/requiredLibs \

You're doing this the complicated way (IMHO the wrong way). See
https://gcc.gnu.org/wiki/InstallingGCC for a better way.


>               --with-ppl=$INSTALLDIR/requiredLibs \
>               --with-cloog=$INSTALLDIR/requiredLibs --enable-cloog-backend=isl

Do you really need the Graphite optimizations? If not you can just
avoid using ISL (or ppl, or cloog) entirely.