GCC-Ada-4.9.2

Installation of the GNAT binary

Before unpacking and changing into the GCC source directory, first unpack the GNAT tarball, and change to the GNAT directory. Then, install the GNAT binary by running the following command as the root user:

make ins-all prefix=/opt/gnat

The GNAT compiler can be invoked by executing the gcc binary installed in /opt/gnat/bin.

You may now remove the GNAT source directory if desired.

Prepare to compile GCC by placing the GNAT version of gcc at the beginning of the PATH variable by using the following commands:

PATH_HOLD=$PATH &&
export PATH=/opt/gnat/bin:$PATH_HOLD

Doing so has the drawback that the GCC and Binutils executables are taken from the just installed GNAT package, but the versions of those executables are outdated compared to those installed in LFS. This is not important for the GCC compilers, since they recompile themselves during the bootstrap process. On the other hand, the outdated ld and as tools are used all along. In order to use the LFS tools, issue as the root user:

find /opt/gnat -name ld -exec mv -v {} {}.old \;
find /opt/gnat -name as -exec mv -v {} {}.old \;

Installation of GCC Ada

Install GCC Ada by running the following commands:

sed -i -e 's@/libx32/ld-linux-x32.so.2@/tools/libx32/ld-linux-x32.so.2@g' gcc/config/i386/linux64.h
sed -i -e 's@/lib/ld-linux.so.2@/lib32/ld-linux.so.2@g' gcc/config/i386/linux64.h
sed -i -e '/MULTILIB_OSDIRNAMES/d' gcc/config/i386/t-linux64
echo "MULTILIB_OSDIRNAMES = m64=../lib m32=../lib32 mx32=../libx32" >> gcc/config/i386/t-linux64

mkdir ../gcc-build &&
cd    ../gcc-build &&

../gcc-4.9.2/configure          \
    --prefix=/usr               \
    --libdir=/usr/lib           \
    --enable-shared             \
    --enable-threads=posix      \
    --enable-__cxa_atexit       \
    --with-multilib-list=m32,m64,mx32 \
    --enable-clocale=gnu        \
    --with-system-zlib          \
    --enable-cloog-backend=isl  \
    --enable-languages=ada &&
make

If you have installed additional packages such as Valgrind and GDB, the GCC part of the testsuite will run more tests than in LFS. Some of those will report FAIL and others XPASS (pass when expected to FAIL). To run the tests, issue:

ulimit -s 32768 &&
make -k check

The tests are very long, and the results may be hard to find in the logs, specially if you use parallel jobs with make. You can get a summary of the tests with:

../gcc-4.9.2/contrib/test_summary

Now, as the root user:

make install &&

mkdir -pv /usr/share/gdb/auto-load/usr/lib              &&
mv -v /usr/lib/*gdb.py /usr/share/gdb/auto-load/usr/lib &&

chown -v -R root:root \
    /usr/lib/gcc/*linux-gnu/4.9.2/include{,-fixed} \
    /usr/lib/gcc/*linux-gnu/4.9.2/ada{lib,include}

You should now remove the GNAT installation and perform other cleanups:

rm -rf /opt/gnat &&
export PATH=$PATH_HOLD &&
unset PATH_HOLD