https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123490
Bug ID: 123490
Summary: [16 regression] Parallel build issue building
gnattools
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Keywords: build
Severity: normal
Priority: P3
Component: ada
Assignee: unassigned at gcc dot gnu.org
Reporter: sjames at gcc dot gnu.org
CC: dkm at gcc dot gnu.org
Target Milestone: ---
Created attachment 63289
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=63289&action=edit
build.log.xz
I've seen this on two machines today but of course it sometimes builds fine on
those. Guess it started with r16-6442-g7a9b0d73fe6095.
```
make[2]: Entering directory
'/var/tmp/portage/sys-devel/gcc-16.0.9999/work/build/gnattools'
rm -rf ../gcc/ada/tools
make[2]: Leaving directory
'/var/tmp/portage/sys-devel/gcc-16.0.9999/work/build/gnattools'
make[2]: Entering directory
'/var/tmp/portage/sys-devel/gcc-16.0.9999/work/build/gnattools'
mkdir -p ../gcc/ada/tools
make[2]: Leaving directory
'/var/tmp/portage/sys-devel/gcc-16.0.9999/work/build/gnattools'
make[2]: Entering directory
'/var/tmp/portage/sys-devel/gcc-16.0.9999/work/build/gnattools'
Cannot build gnattools while gnatlib is out of date or unbuilt
make[2]: *** [Makefile:162: ../gcc/stamp-gnatlib-rts] Error 1
make[2]: Leaving directory
'/var/tmp/portage/sys-devel/gcc-16.0.9999/work/build/gnattools'
make[2]: *** Waiting for unfinished jobs....
```
I've attached the full log, I've not looked at the Makefiles.
```
/var/tmp/portage/sys-devel/gcc-16.0.9999/work/build/gnattools # ../gcc/xgcc -v
Using built-in specs.
COLLECT_GCC=../gcc/xgcc
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-pc-linux-gnu
Configured with:
/var/tmp/portage/sys-devel/gcc-16.0.9999/work/gcc-16.0.9999/configure
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/usr
--bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/16
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/16/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/16
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/16/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/16/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/16/include/g++-v16
--disable-silent-rules --disable-dependency-tracking
--with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/16/python
--enable-libphobos --enable-objc-gc
--enable-languages=c,c++,d,objc,obj-c++,fortran,ada,rust --enable-obsolete
--enable-secureplt --disable-werror --with-system-zlib --enable-nls
--without-included-gettext --disable-libunwind-exceptions
--enable-checking=yes,extra,rtl,df --with-bugurl=https://bugs.gentoo.org/
--with-pkgversion='Gentoo 16.0.9999 p, commit
105e7a429a1b55bdbf23b82f444a1079ea9b8070' --with-gcc-major-version-only
--enable-libstdcxx-time --enable-lto --disable-libstdcxx-pch --enable-shared
--enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu
--with-tls=gnu2 --enable-multilib --with-multilib-list=m32,m64
--disable-fixed-point --enable-targets=all --enable-offload-defaulted
--enable-offload-targets=nvptx-none --enable-libgomp --disable-libssp
--enable-libada --enable-cet --disable-systemtap --enable-valgrind-annotations
--enable-valgrind-interop --disable-vtable-verify --disable-libvtv --with-zstd
--without-isl --enable-default-pie --enable-host-pie --enable-host-bind-now
--enable-default-ssp --disable-fixincludes
--with-gxx-libcxx-include-dir=/usr/include/c++/v1 --enable-linker-build-id
--enable-linker-build-id --enable-linker-build-id --enable-linker-build-id
--with-build-config='bootstrap-lto bootstrap-cet'
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 16.0.0 20260108 (experimental)
25c8599ad467f73953a6c4b838b1122c4803b1a1 (Gentoo 16.0.9999 p, commit
105e7a429a1b55bdbf23b82f444a1079ea9b8070)
```
