<span style=" font-size:10pt;font-family:sans-serif">Hi Chris.</span>
<br>
<br><span style=" font-size:10pt;font-family:sans-serif">I wrote that script
- and indeed use it to build the cross-compiler bundled in the TASTE VM.
</span>
<br>
<br><span style=" font-size:10pt;font-family:sans-serif">It's been a while
since I last performed a build - so my advice may be a bit outdated - but
your problems in all likelihood come from using an old GNAT. The Ada cross
compiler uses constructs that aren't supported in GNAT6.3 (<i>the default
policy in Debian stable - which is the basis of the TASTE VM - is to update
things.... very slowly</i>). So when I build the cross compiler, I simply
install a later GNAT from Debian testing or unstable (<i>edit /etc/apt/sources.list,
add the "testing" or "unstable" repos, "apt-get
update", and then install gnat 7 - or maybe we're at gnat 8 now (not
sure</i>).</span>
<br>
<br><span style=" font-size:10pt;font-family:sans-serif">Try it again this
way, and keep me in the loop (<i>you can contact me directly if you want</i>).
I make it a point to keep that script working - because we need Ada support
in our TASTE-bundled cross-compilers, regardless of how everything else
evolves.</span>
<br>
<br><span style=" font-size:10pt;font-family:sans-serif">BTW, even though
I periodically merge my script in the repo you pointed to, my "master"
copy is here:</span>
<br><a href="https://gitrepos.estec.esa.int/ttsiodras/RTEMS-build-workflows/tree/master/OAR/contrib"><span style=" font-size:10pt;color:blue;font-family:sans-serif">https://gitrepos.estec.esa.int/ttsiodras/RTEMS-build-workflows/tree/master/OAR/contrib</span></a>
<br>
<br><span style=" font-size:10pt;font-family:sans-serif">At some point
I need to create a Dockerfile to completely automate this thing - there's
too many variables to consider and people can easily trip over one of them.</span>
<br>
<br><span style=" font-size:10pt;font-family:sans-serif">Cheers,</span>
<br><span style=" font-size:10pt;font-family:sans-serif">Thanassis.</span>
<br>
<br><span style=" font-size:10pt;color:#000080;font-family:sans-serif"><b>Thanassis
Tsiodras</b></span>
<br><span style=" font-size:10pt;font-family:sans-serif">Real-time Embedded
Software Engineer </span>
<br><span style=" font-size:10pt;font-family:sans-serif">System, Software
and Technology Department</span>
<br>
<br><span style=" font-size:10pt;font-family:sans-serif"><b>ESTEC</b></span>
<br><span style=" font-size:10pt;font-family:sans-serif">Keplerlaan 1,
PO Box 299</span>
<br><span style=" font-size:10pt;font-family:sans-serif">NL-2200 AG Noordwijk,
The Netherlands</span>
<br><span style=" font-size:10pt;font-family:sans-serif">Thanassis.Tsiodras@esa.int
| </span><a href=www.esa.int><span style=" font-size:10pt;color:blue;font-family:sans-serif">www.esa.int</span></a>
<br><span style=" font-size:10pt;font-family:sans-serif">T +31 71 565 5332</span>
<br>
<br>
<br>
<br><span style=" font-size:9pt;color:#5f5f5f;font-family:sans-serif">From:
</span><span style=" font-size:9pt;font-family:sans-serif">chris@kluge-rocks.de</span>
<br><span style=" font-size:9pt;color:#5f5f5f;font-family:sans-serif">To:
</span><span style=" font-size:9pt;font-family:sans-serif">users@rtems.org</span>
<br><span style=" font-size:9pt;color:#5f5f5f;font-family:sans-serif">Date:
</span><span style=" font-size:9pt;font-family:sans-serif">30/11/2018
00:09</span>
<br><span style=" font-size:9pt;color:#5f5f5f;font-family:sans-serif">Subject:
</span><span style=" font-size:9pt;font-family:sans-serif">Problems
with RTEMS toolchain build 4.12 & 5 incl. Ada support</span>
<br><span style=" font-size:9pt;color:#5f5f5f;font-family:sans-serif">Sent
by: </span><span style=" font-size:9pt;font-family:sans-serif">"users"
<users-bounces@rtems.org></span>
<br>
<hr noshade>
<br>
<br>
<br><span style=" font-size:10pt;font-family:Arial">Hi community,</span>
<br><span style=" font-size:10pt;font-family:Arial"><br>
I'm struggling with building a GCC toolchain for RTEMS including Ada language
support. After trying everything I found at Github or in the web, the RTEMS
documentation or RTEMS source builder, I finally decided to use TASTE's
virtual machine which I hoped to find a consistent and correct environment,
esp. regarding the GCC toolchain installed on this system (GCC 6.3.0 with
Ada support).<br>
<br>
To additionally avoid any problems caused by mistakes made in build scripts,
I fetched the existing build scripts found at:</span><span style=" font-size:10pt;color:blue;font-family:Arial"><u><br>
</u></span><a href="https://gitrepos.estec.esa.int/taste/taste-setup/tree/master/misc/HW_experiments/GR740_SPW/contrib" target=_blank><span style=" font-size:10pt;color:blue;font-family:Arial"><u>https://gitrepos.estec.esa.int/taste/taste-setup/tree/master/misc/HW_experiments/GR740_SPW/contrib</u></span></a><span style=" font-size:10pt;font-family:Arial"><br>
<br>
The scripts should build toolchains for RTEMS 4.11 and 5.1. The RTEMS GCC
toolchain installed in the VM is obviously built with one of the scripts,
at least according to the comments and readme files. So I was pretty optimistic
to be successful after days and weeks of disappointed attempts.<br>
<br>
Unfortunately, I once again ran into trouble and couldn't build the toolchain.
This time the process stopped when during build of GCC because of an undefined
symbol: 'Restricted_Tasking':<br>
<br>
gcc-7.1.0-newlib-2.5.0.20170623-x86_64-linux-gnu-1/gcc-7.1.0/gcc/ada -O2
-pipe -I/root/development/rtems/src/rtems-source-builder-2018.11.29/rtems/build/tmp/sb-root/4.12/rtems-sparc/opt/rtems-4.12-2018.11.29/include
-g -O2 -W -Wall -gnatpg -gnata -I- /root/development/rtems/src/rtems-source-builder-2018.11.29/rtems/build/sparc-rtems4.12-gcc-7.1.0-newlib-2.5.0.20170623-x86_64-linux-gnu-1/gcc-7.1.0/gcc/ada/restrict.adb<br>
restrict.adb:1198:33: "Restricted_Tasking" is undefined (more
references follow)<br>
gnatmake: "/root/development/rtems/src/rtems-source-builder-2018.11.29/rtems/build/sparc-rtems4.12-gcc-7.1.0-newlib-2.5.0.20170623-x86_64-linux-gnu-1/gcc-7.1.0/gcc/ada/restrict.adb"
compilation error<br>
../gcc-interface/Makefile:2640: recipe for target 'gnatmake-re' failed<br>
make[3]: Leaving directory '/root/development/rtems/src/rtems-source-builder-2018.11.29/rtems/build/sparc-rtems4.12-gcc-7.1.0-newlib-2.5.0.20170623-x86_64-linux-gnu-1/build/gcc/ada/tools'<br>
make[3]: *** [gnatmake-re] Error 4<br>
make[2]: *** [gnattools-cross] Error 2<br>
Makefile:215: recipe for target 'gnattools-cross' failed<br>
make[2]: Leaving directory '/root/development/rtems/src/rtems-source-builder-2018.11.29/rtems/build/sparc-rtems4.12-gcc-7.1.0-newlib-2.5.0.20170623-x86_64-linux-gnu-1/build/gnattools'<br>
make[1]: *** [all-gnattools] Error 2<br>
Makefile:10575: recipe for target 'all-gnattools' failed<br>
make[1]: Leaving directory '/root/development/rtems/src/rtems-source-builder-2018.11.29/rtems/build/sparc-rtems4.12-gcc-7.1.0-newlib-2.5.0.20170623-x86_64-linux-gnu-1/build'<br>
make: *** [all] Error 2<br>
Makefile:897: recipe for target 'all' failed<br>
shell cmd failed: /bin/sh -ex /root/development/rtems/src/rtems-source-builder-2018.11.29/rtems/build/sparc-rtems4.12-gcc-7.1.0-newlib-2.5.0.20170623-x86_64-linux-gnu-1/doit<br>
error: building sparc-rtems4.12-gcc-7.1.0-newlib-2.5.0.20170623-x86_64-linux-gnu-1<br>
<br>
I then tried to find anything in the web and found this bug report: </span><a href="https://gcc.gnu.org/ml/gcc-bugs/2017-07/msg01306.html" target=_blank><span style=" font-size:10pt;color:blue;font-family:Arial"><u>https://gcc.gnu.org/ml/gcc-bugs/2017-07/msg01306.html</u></span></a><span style=" font-size:10pt;font-family:Arial">
which describes a workaround:<br>
- don't build GCC in the source tree (which is already ensured by RSB)<br>
- add C & C++ to the supported languages<br>
- use absolute paths for GCC configuration (I guessed this means: don't
use ../configure)<br>
<br>
I edited gcc-common-1.cfg of RSB accordingly to avoid use of relative paths
for the GCC configuration, but this didn't help. The build process still
fails with the same issue, independent from RTEMS 4.11 or 5 or if there's
an abs path or not.<br>
<br>
I know that providing an existing GNAT is mandatory when building Ada and
that I have to build a bootstrap compiler first before resuming with build
of the final GCC. But I didn't expect the build process to fail in the
TASTE VM which should provide everything needed to have success.<br>
<br>
Does anyone know where to find a really working build script or the required
RTEMS source builder commit IDs to use? I guess that using the masters
of both, RTEMS source builder and the kernel, will not work for that, but
I can't find a tag or branch which points me to the right direction or
which works.<br>
<br>
Addditionally, there's no information in the RTEMS source builder on how
to build with Ada support: The description of the TASTE project describes
building a bootstrap and a final compiler while the original RTEMS source
builder documentation simply says that parameter --with-ada is enough in
combination with a GNAT in the PATH. None of that worked.<br>
<br>
Is there any chance to get a GCC with Ada support for RTEMS 5?<br>
Which exact version of GCC and which RTEMS source builder and kernel git
versions/commits are supposed to work (the masters don't work for me, neither
the commit IDs of TASTE's build.rtems.X.sh scripts work for me)?<br>
<br>
I could imagine that the GCC 6.3.0 of the TASTE VM isn't suitable to build
RTEMS toolchain with RTEMS source builder & kernel masters but I can't
find information which of all those config files of RSB I have to use for
a successful build (targets: ARM, x86-64). This is pretty frustrating and
very disappointing. There are so many variables which are not exactly documented,
at least for the current version of RSB/kernel.<br>
<br>
Thanks in advance for every answer or hint pointing me to the right direction
(esp. on the question how to define the correct RSB and RTEMS kernel versions/commit
IDs for a specific native GCC installation)!<br>
<br>
Best regards,<br>
Chris Kluge<br>
<br>
<br>
</span>
<br><span style=" font-size:10pt;font-family:Arial"><br>
<br>
</span>
<br><span style=" font-size:10pt;font-family:Arial"><br>
<br>
</span>
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