Bug#980696: ceres-solver: FTBFS: make[3]: *** No rule to make target '/usr/lib/x86_64-linux-gnu/libunwind.so', needed by 'bin/visibility_based_preconditioner_test'. Stop.

[Lucas Nussbaum]

Source: ceres-solver
Version: 1.14.0-13
Severity: serious
Justification: FTBFS on amd64
Tags: bullseye sid ftbfs
Usertags: ftbfs-20210120 ftbfs-bullseye

Hi,

During a rebuild of all packages in sid, your package failed to build
on amd64.

Relevant part (hopefully):
> make[3]: Entering directory '/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu'
> make[3]: *** No rule to make target '/usr/lib/x86_64-linux-gnu/libunwind.so', needed by 'bin/visibility_based_preconditioner_test'.  Stop.
> make[3]: *** Waiting for unfinished jobs....
> [ 39%] Building CXX object internal/ceres/CMakeFiles/visibility_based_preconditioner_test.dir/visibility_based_preconditioner_test.cc.o
> cd /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/internal/ceres && /usr/bin/c++ -DCERES_CXSPARSE_VERSION=\"3.2.0\" -DCERES_GFLAGS_NAMESPACE=google -DCERES_SUITESPARSE_VERSION=\"5.8.1\" -DGFLAGS_IS_A_DLL=0 -DGOOGLE_GLOG_DLL_DECL="" -DGOOGLE_GLOG_DLL_DECL_FOR_UNITTESTS="" -I/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/config -I/<<PKGBUILDDIR>>/include -I/<<PKGBUILDDIR>>/internal -I/<<PKGBUILDDIR>>/internal/ceres -I/usr/include/suitesparse -isystem /usr/include/eigen3 -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fopenmp -Wno-unknown-pragmas -Wno-sign-compare -Wno-unused-parameter -Wno-missing-field-initializers -O3 -DNDEBUG  -o CMakeFiles/visibility_based_preconditioner_test.dir/visibility_based_preconditioner_test.cc.o -c /<<PKGBUILDDIR>>/internal/ceres/visibility_based_preconditioner_test.cc
> make[3]: Leaving directory '/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu'
> make[2]: *** [CMakeFiles/Makefile2:501: internal/ceres/CMakeFiles/thread_pool_test.dir/all] Error 2

The full build log is available from:
   http://qa-logs.debian.net/2021/01/20/ceres-solver_1.14.0-13_unstable.log

A list of current common problems and possible solutions is available at
http://wiki.debian.org/qa.debian.org/FTBFS . You're welcome to contribute!

If you reassign this bug to another package, please marking it as 'affects'-ing
this package. See https://www.debian.org/Bugs/server-control#affects

If you fail to reproduce this, please provide a build log and diff it with me
so that we can identify if something relevant changed in the meantime.

About the archive rebuild: The rebuild was done on EC2 VM instances from
Amazon Web Services, using a clean, minimal and up-to-date chroot. Every
failed build was retried once to eliminate random failures.