Bug#1145146: cimg: FTBFS: undefined reference to symbol '_ZN7Iex_3_46ArgExcD1Ev'

[Santiago Vila]

Package: src:cimg
Version: 3.5.2+dfsg-2
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/202608/

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:cimg, so that this is still
visible in the BTS web page for this package.

Thanks.

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[...]
/usr/include/opencv4/opencv2/core/mat.inl.hpp: In instantiation of 
‘cv::Mat::Mat(const cv::Matx<_Tp, m, n>&, bool) [with _Tp = double; int m = 
2; int n = 3]’:
/usr/include/opencv4/opencv2/imgproc.hpp:2584:64:   required from here
 2584 |     return Mat(getRotationMatrix2D_(center, angle, scale), true);
      |                                                                ^
/usr/include/opencv4/opencv2/core/mat.inl.hpp:533:23: warning: arithmetic 
between different enumeration types ‘cv::Mat::<unnamed enum>’ and 
‘cv::traits::Type<double>::<unnamed enum>’ is deprecated 
[-Wdeprecated-enum-enum-conversion]
  533 |     : flags(MAGIC_VAL + traits::Type<_Tp>::value + CV_MAT_CONT_FLAG), 
dims(2), rows(m), cols(n), data(0),
      |             ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/ccEY8txd.o: undefined reference to 
symbol '_ZN7Iex_3_46ArgExcD1Ev'
/usr/bin/x86_64-linux-gnu-ld.bfd: /usr/lib/x86_64-linux-gnu/libIex-3_4.so.33: 
error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
make[3]: *** [Makefile:326: curve_editor2d] Error 1
make[3]: Leaving directory '/<<PKGBUILDDIR>>/examples'
make[2]: *** [Makefile:459: Mlinux] Error 2
make[2]: Leaving directory '/<<PKGBUILDDIR>>/examples'
make[1]: *** [debian/rules:31: override_dh_auto_test] Error 2
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
make: *** [debian/rules:11: binary] Error 2
dpkg-buildpackage: error: debian/rules binary subprocess failed with exit 
status 2
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