Bug#1122412: fenics-basix: FTBFS: Parsing file /<<BUILDDIR>>/fenics-basix-0/<<PKGBUILDDIR>>/cpp/basix/precompute.h:87: error: Found end of C comment inside a '`' block without matching start of the comment! Maybe the end marker for the block is missing? (warning treated as error, aborting now)

Wed Dec 10 20:38:57 GMT 2025

Package: src:fenics-basix
Version: 0.9.0-4
Severity: serious
Tags: ftbfs forky sid

Dear maintainer:

During a rebuild of all packages in unstable, this package failed to build.

Below you will find the last part of the build log (probably the most
relevant part, but not necessarily). If required, the full build log
is available here:

https://people.debian.org/~sanvila/build-logs/202512/

About the archive rebuild: The build was made on virtual machines from AWS,
using sbuild and a reduced chroot with only build-essential packages.

If you cannot reproduce the bug please contact me privately, as I
am willing to provide ssh access to a virtual machine where the bug is
fully reproducible.

If this is really a bug in one of the build-depends, please use
reassign and add an affects on src:fenics-basix, so that this is still
visible in the BTS web page for this package.

Thanks.

--------------------------------------------------------------------------------
[...]
 debian/rules clean
py3versions: no X-Python3-Version in control file, using supported versions
dh clean --with sphinxdoc --buildsystem=cmake
   debian/rules override_dh_auto_clean
make[1]: Entering directory '/<<PKGBUILDDIR>>'
py3versions: no X-Python3-Version in control file, using supported versions
rm -rf cpp/basix/version.h
rm -rf doc/cpp/html doc/cpp/latex
rm -rf .pybuild
rm -rf python/LICENSE
rm -rf ./.pytest_cache test/.pytest_cache  test/__pycache__  python/testing_build
dh_auto_clean
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
   dh_autoreconf_clean -O--buildsystem=cmake
   dh_clean -O--buildsystem=cmake
 debian/rules binary
py3versions: no X-Python3-Version in control file, using supported versions
dh binary --with sphinxdoc --buildsystem=cmake
   dh_update_autotools_config -O--buildsystem=cmake
   dh_autoreconf -O--buildsystem=cmake
   debian/rules override_dh_auto_configure
make[1]: Entering directory '/<<PKGBUILDDIR>>'
py3versions: no X-Python3-Version in control file, using supported versions
dh_auto_configure --sourcedir=cpp
	cd obj-x86_64-linux-gnu && DEB_PYTHON_INSTALL_LAYOUT=deb PKG_CONFIG=/usr/bin/pkg-config cmake -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=None -DCMAKE_INSTALL_SYSCONFDIR=/etc -DCMAKE_INSTALL_LOCALSTATEDIR=/var -DCMAKE_EXPORT_NO_PACKAGE_REGISTRY=ON -DCMAKE_FIND_USE_PACKAGE_REGISTRY=OFF -DCMAKE_FIND_PACKAGE_NO_PACKAGE_REGISTRY=ON -DFETCHCONTENT_FULLY_DISCONNECTED=ON -DCMAKE_INSTALL_RUNSTATEDIR=/run -DCMAKE_SKIP_INSTALL_ALL_DEPENDENCY=ON "-GUnix Makefiles" -DCMAKE_VERBOSE_MAKEFILE=ON -DCMAKE_INSTALL_LIBDIR=lib/x86_64-linux-gnu ../cpp
-- The CXX compiler identification is GNU 15.2.0
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Looking for sgemm_
-- Looking for sgemm_ - found
-- Found BLAS: /usr/lib/x86_64-linux-gnu/libblas.so
-- Looking for cheev_
-- Looking for cheev_ - found
-- Found LAPACK: /usr/lib/x86_64-linux-gnu/liblapack.so;/usr/lib/x86_64-linux-gnu/libblas.so
-- The following features have been enabled:

 * BUILD_SHARED_LIBS, Build Basix with shared libraries.

-- The following REQUIRED packages have been found:

 * BLAS
 * LAPACK

-- The following features have been disabled:

 * INSTALL_RUNTIME_DEPENDENCIES, Include runtime dependencies in install (Windows-only)

-- Configuring done (0.4s)
-- Generating done (0.0s)
CMake Warning:
  Manually-specified variables were not used by the project:

    CMAKE_EXPORT_NO_PACKAGE_REGISTRY
    CMAKE_FIND_PACKAGE_NO_PACKAGE_REGISTRY
    FETCHCONTENT_FULLY_DISCONNECTED

-- Build files have been written to: /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
   debian/rules override_dh_auto_build-indep
make[1]: Entering directory '/<<PKGBUILDDIR>>'
py3versions: no X-Python3-Version in control file, using supported versions
dh_auto_build --sourcedir=cpp -i
	cd obj-x86_64-linux-gnu && make -j2 INSTALL="install --strip-program=true" VERBOSE=1
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Doxygen version used: 1.15.0
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Searching for files in directory /<<PKGBUILDDIR>>/cpp/basix
Reading and parsing tag files
Parsing files
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Parsing file /<<PKGBUILDDIR>>/cpp/basix/cell.cpp...
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Preprocessing /<<PKGBUILDDIR>>/cpp/basix/e-brezzi-douglas-marini.cpp...
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Parsing file /<<BUILDDIR>>/fenics-basix-0/<<PKGBUILDDIR>>/cpp/basix/precompute.h:87: error: Found end of C comment inside a '`' block without matching start of the comment! Maybe the end marker for the block is missing? (warning treated as error, aborting now)
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