Bug#957280: gmsh: ftbfs with GCC-10

[Matthias Klose]

Package: src:gmsh
Version: 4.4.1+ds1-2
Severity: normal
Tags: sid bullseye
User: debian-gcc at lists.debian.org
Usertags: ftbfs-gcc-10

Please keep this issue open in the bug tracker for the package it
was filed for.  If a fix in another package is required, please
file a bug for the other package (or clone), and add a block in this
package. Please keep the issue open until the package can be built in
a follow-up test rebuild.

The package fails to build in a test rebuild on at least amd64 with
gcc-10/g++-10, but succeeds to build with gcc-9/g++-9. The
severity of this report will be raised before the bullseye release,
so nothing has to be done for the buster release.

The full build log can be found at:
http://people.debian.org/~doko/logs/gcc10-20200225/gmsh_4.4.1+ds1-2_unstable_gcc10.log
The last lines of the build log are at the end of this report.

To build with GCC 10, either set CC=gcc-10 CXX=g++-10 explicitly,
or install the gcc, g++, gfortran, ... packages from experimental.

  apt-get -t=experimental install g++ 

Common build failures are new warnings resulting in build failures with
-Werror turned on, or new/dropped symbols in Debian symbols files.
For other C/C++ related build failures see the porting guide at
http://gcc.gnu.org/gcc-10/porting_to.html

[...]
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/cendel.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:411: multiple definition of `MMG_movevertex'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:411: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/cendel.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:410: multiple definition of `MMG_optlentet'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:410: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/cendel.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:409: multiple definition of `MMG_interp'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:409: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/cendel.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:408: multiple definition of `MMG_optlen'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:408: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/cendel.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:407: multiple definition of `MMG_buckin'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:407: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/cendel.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:406: multiple definition of `MMG_cavity'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:406: first defined here
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/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/cendel.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:403: multiple definition of `MMG_caltet'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:403: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/cendel.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:402: multiple definition of `MMG_length'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:402: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/cendel.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:401: multiple definition of `MMG_swpptr'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:401: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/bucket.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:411: multiple definition of `MMG_movevertex'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:411: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/bucket.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:410: multiple definition of `MMG_optlentet'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:410: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/bucket.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:409: multiple definition of `MMG_interp'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:409: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/bucket.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:408: multiple definition of `MMG_optlen'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:408: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/bucket.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:407: multiple definition of `MMG_buckin'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:407: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/bucket.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:406: multiple definition of `MMG_cavity'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:406: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/bucket.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:405: multiple definition of `MMG_caltet2'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:405: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/bucket.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:404: multiple definition of `MMG_calte1'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:404: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/bucket.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:403: multiple definition of `MMG_caltet'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:403: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/bucket.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:402: multiple definition of `MMG_length'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:402: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/bucket.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:401: multiple definition of `MMG_swpptr'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:401: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/boulep.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:411: multiple definition of `MMG_movevertex'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:411: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/boulep.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:410: multiple definition of `MMG_optlentet'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:410: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/boulep.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:409: multiple definition of `MMG_interp'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:409: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/boulep.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:408: multiple definition of `MMG_optlen'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:408: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/boulep.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:407: multiple definition of `MMG_buckin'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:407: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/boulep.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:406: multiple definition of `MMG_cavity'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:406: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/boulep.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:405: multiple definition of `MMG_caltet2'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:405: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/boulep.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:404: multiple definition of `MMG_calte1'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:404: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/boulep.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:403: multiple definition of `MMG_caltet'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:403: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/boulep.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:402: multiple definition of `MMG_length'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:402: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/boulep.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:401: multiple definition of `MMG_swpptr'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:401: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/analarcutting.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:409: multiple definition of `MMG_interp'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:409: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/analarcutting.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:402: multiple definition of `MMG_length'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:402: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/analarcutting.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:411: multiple definition of `MMG_movevertex'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:411: first defined here
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/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/analarcutting.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:408: multiple definition of `MMG_optlen'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:408: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/analarcutting.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:407: multiple definition of `MMG_buckin'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:407: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/analarcutting.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:406: multiple definition of `MMG_cavity'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:406: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/analarcutting.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:405: multiple definition of `MMG_caltet2'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:405: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/analarcutting.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:404: multiple definition of `MMG_calte1'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:404: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/analarcutting.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:403: multiple definition of `MMG_caltet'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:403: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/analarcutting.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:401: multiple definition of `MMG_swpptr'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:401: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/analar.c.o:./debian/build/./contrib/mmg3d/build/sources/analar.c:57: multiple definition of `MMG_nplen'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d4.c.o:./debian/build/./contrib/mmg3d/build/sources/mmg3d4.c:52: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/analar.c.o:./debian/build/./contrib/mmg3d/build/sources/analar.c:57: multiple definition of `MMG_npref'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d4.c.o:./debian/build/./contrib/mmg3d/build/sources/mmg3d4.c:52: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/analar.c.o:./debian/build/./contrib/mmg3d/build/sources/analar.c:57: multiple definition of `MMG_bouffe'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d4.c.o:./debian/build/./contrib/mmg3d/build/sources/mmg3d4.c:52: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/analar.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:402: multiple definition of `MMG_length'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:402: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/analar.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:409: multiple definition of `MMG_interp'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:409: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/analar.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:407: multiple definition of `MMG_buckin'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:407: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/analar.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:406: multiple definition of `MMG_cavity'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:406: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/analar.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:411: multiple definition of `MMG_movevertex'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:411: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/analar.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:410: multiple definition of `MMG_optlentet'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:410: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/analar.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:408: multiple definition of `MMG_optlen'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:408: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/analar.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:405: multiple definition of `MMG_caltet2'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:405: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/analar.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:404: multiple definition of `MMG_calte1'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:404: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/analar.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:403: multiple definition of `MMG_caltet'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:403: first defined here
/usr/bin/ld: CMakeFiles/shared.dir/contrib/mmg3d/build/sources/analar.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:401: multiple definition of `MMG_swpptr'; CMakeFiles/shared.dir/contrib/mmg3d/build/sources/mmg3d.c.o:./debian/build/./contrib/mmg3d/build/sources/mesh.h:401: first defined here
collect2: error: ld returned 1 exit status
make[4]: *** [CMakeFiles/shared.dir/build.make:10132: libgmsh.so.4.4.1] Error 1
make[4]: Leaving directory '/<<PKGBUILDDIR>>/debian/build'
make[3]: *** [CMakeFiles/Makefile2:1419: CMakeFiles/shared.dir/all] Error 2
make[3]: Leaving directory '/<<PKGBUILDDIR>>/debian/build'
make[2]: *** [Makefile:166: all] Error 2
make[2]: Leaving directory '/<<PKGBUILDDIR>>/debian/build'
dh_auto_build: error: cd debian/build && make -j4 "INSTALL=install --strip-program=true" returned exit code 2
make[1]: *** [debian/rules:63: override_dh_auto_build] Error 25
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
make: *** [debian/rules:11: build] Error 2
dpkg-buildpackage: error: debian/rules build subprocess returned exit status 2