[Bug libgcc/95712] New: configure-target-libgcc fails on s390x target because xgcc is not being built
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95712 Bug ID: 95712 Summary: configure-target-libgcc fails on s390x target because xgcc is not being built Product: gcc Version: 9.3.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: libgcc Assignee: unassigned at gcc dot gnu.org Reporter: egorenar at linux dot ibm.com Target Milestone: --- Created attachment 48744 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48744&action=edit Console output Hi all, i'm trying to build buildroot on s390x machine for s390x machine and the toolchain build step fails. I attached the build.log and the config.log of the failing target configure-target-libgcc. It seems that xgcc is not being built prior to configuring the target configure-target-libgcc. When i build on host x86_64 for s390x target then everything works with the same configuration. Regards
[Bug libgcc/95712] configure-target-libgcc fails on s390x target because xgcc is not being built
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95712 --- Comment #1 from Alexander Egorenkov --- Created attachment 48745 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48745&action=edit config.log for configure-target-libgcc
[Bug libgcc/58260] configure: error: cannot compute suffix of object files: cannot compile See `config.log' for more details. gmake[1]: *** [configure-target-libgcc] Error 1
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58260 Alexander Egorenkov changed: What|Removed |Added CC||egorenar at linux dot ibm.com --- Comment #14 from Alexander Egorenkov --- The config.log of configure-target-libgcc says: /home/egorenar/Repositories/buildroot/output/s390x-syzkaller/build/host-gcc-initial-9.3.0/libgcc/configure: line 3504: /home/egorenar/Repositories/buildroot/output/s390x-syzkaller/build/host-gcc-initial-9.3.0/build/./gcc/xgcc: No such file or directory
[Bug libgcc/95712] configure-target-libgcc fails on s390x target because xgcc is not being built
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95712 --- Comment #2 from Alexander Egorenkov --- Created attachment 48746 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48746&action=edit config.log for configure-target-libgcc gcc 9.3.0 Sorry attached gcc 8.4.0 log previosuly, but the same issue for gcc 9.3.0
[Bug libgcc/58260] configure: error: cannot compute suffix of object files: cannot compile See `config.log' for more details. gmake[1]: *** [configure-target-libgcc] Error 1
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58260 --- Comment #15 from Alexander Egorenkov --- (In reply to Alexander Egorenkov from comment #14) > The config.log of configure-target-libgcc says: > /home/egorenar/Repositories/buildroot/output/s390x-syzkaller/build/host-gcc- > initial-9.3.0/libgcc/configure: line 3504: > /home/egorenar/Repositories/buildroot/output/s390x-syzkaller/build/host-gcc- > initial-9.3.0/build/./gcc/xgcc: No such file or directory Sorry, please ignore the comment, i misstyped.
[Bug libgcc/95712] configure-target-libgcc fails on s390x target because xgcc is not being built
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95712 --- Comment #3 from Alexander Egorenkov --- The config.log of configure-target-libgcc says: ... build/host-gcc-initial-9.3.0/build/./gcc/xgcc: No such file or directory
[Bug libgcc/95712] configure-target-libgcc fails on s390x target because xgcc is not being built
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95712 --- Comment #4 from Alexander Egorenkov --- I also have the same issue with gcc 8.4.0
[Bug libgcc/95712] configure-target-libgcc fails on s390x target because xgcc is not being built
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95712 Alexander Egorenkov changed: What|Removed |Added Status|RESOLVED|UNCONFIRMED Resolution|INVALID |--- --- Comment #6 from Alexander Egorenkov --- Ok, i understand, therefore, i reproduced the problem without buildroot. My steps: $ mkdir compiler $ cd compiler $ tar xvjf gmp-6.1.0.tar.bz2 $ cd gmp-6.1.0 $ ./configure --prefix=$HOME/compiler/install --disable-shared $ make -j81 $ make install $ cd .. $ tar xvjf mpfr-3.1.4.tar.bz2 $ cd mpfr-3.1.4 $ ./configure --prefix=$HOME/compiler/install --disable-shared --with-gmp=$HOME/compiler/install $ make -j81 $ make install $ cd .. $ tar xvzf mpc-1.0.3.tar.gz $ cd mpc-1.0.3 $ ./configure --prefix=$HOME/compiler/install --disable-shared --with-gmp=$HOME/compiler/install --with-mpfr=$HOME/compiler/install $ make -j81 $ make install $ cd .. $ tar xvzf gcc-9.3.0.tar.xz $ mkdir build-gcc $ cd build-gcc $ ../gcc-9.3.0/configure --prefix=$HOME/compiler/install --enable-shared --disable-static \ --disable-gtk-doc --disable-gtk-doc-html --disable-doc --disable-docs \ --disable-documentation --disable-debug --with-xmlto=no --with-fop=no \ --disable-nls --disable-dependency-tracking --target=s390x-buildroot-linux-gnu \ --enable-__cxa_atexit --with-gnu-ld --disable-libssp --disable-multilib \ --disable-decimal-float --with-gmp=$HOME/compiler/install \ --with-mpc=$HOME/compiler/install --with-mpfr=$HOME/compiler/install \ --with-pkgversion="Buildroot 2020.08-git-g2d8407f8ab" \ --with-bugurl="http://bugs.buildroot.net/"; --disable-libquadmath --enable-tls \ --enable-threads --without-isl --without-cloog --with-arch="z196" \ --with-long-double-128 --enable-languages=c --disable-shared --without-headers \ --disable-threads --with-newlib --disable-largefile $ make -j81 gcc_cv_libc_provides_ssp=yes all-gcc all-target-libgcc The above steps were executed manually w/o any buildroot infrastructure. And i get the same problem, almost the same commands are executed by buildroot. Again, xgcc is not being built and libgcc fails. I patched nothing, everything was vanilla. What i did notice, is that everything seems to work fine and the make commands succeeds, if i drop "-j81" in the last step. I did all these steps on a s390x machine with 80 cores, it is a highly parallel machine. So the issue seems to depend on it somehow, my guess is that maybe some dependencies are not correctly done in libgcc Makefile ? Another workaround i found is to split the last maske command into 2 like this: $ make -j81 all-gcc $ make -j81 all-target-libgcc This seems to fix it also. I'm ready to do more test if required. I really want to fix it, it is very annoying and blocking me. Regards
[Bug bootstrap/95712] configure-target-libgcc fails on s390x target because xgcc is not being built
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95712 --- Comment #8 from Alexander Egorenkov --- $ make --version GNU Make 4.1 Built for s390x-ibm-linux-gnu In my top Makefile the dependecny on maybe-all-gcc is missing: configure-target-libgcc: ... I attached the top Makefile.
[Bug bootstrap/95712] configure-target-libgcc fails on s390x target because xgcc is not being built
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95712 --- Comment #9 from Alexander Egorenkov --- Created attachment 48751 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48751&action=edit top gcc Makefile
[Bug bootstrap/95712] configure-target-libgcc fails on s390x target because xgcc is not being built
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95712 --- Comment #10 from Alexander Egorenkov --- When i add the dependency in Makefile manually, then the parallel build works. Regards
[Bug bootstrap/95712] configure-target-libgcc fails on s390x target because xgcc is not being built
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95712 --- Comment #12 from Alexander Egorenkov --- Indeed, adding --disable-bootstrap helps also.
[Bug bootstrap/95712] configure-target-libgcc fails on s390x target because xgcc is not being built
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95712 --- Comment #17 from Alexander Egorenkov --- (In reply to Andrew Pinski from comment #13) > (In reply to Andreas Schwab from comment #11) > > > generated for aarch64-linux-gnu that I configured for and it has: > > > > You have used --disable-bootstrap. > > No I did not, --disable-bootstrap is the default for the case where we are > doing cross. > > OH I did not notice it was s390 to s390 cross building but buildroot is not > handling that case correctly. Rather it is thinking it is always building a > cross even when build==host==target . > > > --build=s390x-ibm-linux-gnu --host=s390x-buildroot-linux-gnu > > --target=s390x-buildroot-linux-gnu > > That is broken. This is not a cross compiler but rather a build of the > native gcc and therefor is not the correct options. > > So the problem is rather how buildroot is not doing the right configure > options to gcc for building a cross build. NOT A BUG. But i did not use those configure options in my test. And now i also removed option "--target=" in my test and it is still failing with the same problem. I'm not talking about buildroot, i got rid of it. Please see my test. Thanks
[Bug bootstrap/95712] configure-target-libgcc fails on s390x target because xgcc is not being built
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95712 Alexander Egorenkov changed: What|Removed |Added Resolution|INVALID |--- Status|RESOLVED|UNCONFIRMED --- Comment #18 from Alexander Egorenkov --- I reopened the problem because i reproduced this w/o buildroot and --host,--target and --build configure options.
[Bug bootstrap/95712] configure-target-libgcc fails on s390x target because xgcc is not being built
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95712 --- Comment #20 from Alexander Egorenkov --- (In reply to Andrew Pinski from comment #19) > This is a config.sub issue where the vendor is always rest/set to ibm. Not > directly a gcc issue. Gcc does not maintain config.sub. Ok, sorry, thank you :)
[Bug bootstrap/95712] configure-target-libgcc fails on s390x target because xgcc is not being built
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95712 --- Comment #21 from Alexander Egorenkov --- Could you please point me to the bug report it was moved to ? Thanks
[Bug bootstrap/95712] configure-target-libgcc fails on s390x target because xgcc is not being built
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95712 --- Comment #23 from Alexander Egorenkov --- I would gladly if i understood the real problem. Sorry i'm not very familiar with config.guess & config.sub. Could you please elaborate what the problem is and how it should be fixed ? Thanks
[Bug bootstrap/95712] configure-target-libgcc fails on s390x target because xgcc is not being built
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95712
--- Comment #24 from Alexander Egorenkov ---
I finally figured it out and fixed buildroot.
This info is for posterity, in case somebody will have the same issue.
If i understood it correctly, then the problem was that buildroot
wrongly tried to build a native compiler on s390x host for s390 target instead
of a cross-compiler due to a problem is config.sub which is fixed by this path:
@@ -1138,14 +1138,6 @@ case $cpu-$vendor in
cpu=nsx
vendor=tandem
;;
- s390-*)
- cpu=s390
- vendor=ibm
- ;;
- s390x-*)
- cpu=s390x
- vendor=ibm
- ;;
tile*-*)
os=${os:-linux-gnu}
;;
@@ -1229,6 +1221,7 @@ case $cpu-$vendor in
| pyramid \
| riscv | riscv32 | riscv64 \
| rl78 | romp | rs6000 | rx \
+ | s390 | s390x \
| score \
| sh | shl \
| sh[1234] | sh[24]a | sh[24]ae[lb] | sh[23]e | she[lb]
| sh[lb]e \
After fixing config.sub everything builds just fine and works great :)
I'm going to try to submit this fix to the config mailing list.
Best regard & thank you
