Bug#817840: libvigraimpex: fail of test/math on mips

[Daniel Stender]

Source: libvigraimpex
Version: 1.10.0+git20160120.803d5d4-1
Severity: serious
Justification: fails to build from source (but built successfully in the past)

Since 1.10.0+git20160120.803d5d4-1 the build breaks on mips [1] with a failure
of test/math:

<buildlog>
[ 57%] Linking CXX executable test_math
cd /«BUILDDIR»/libvigraimpex-1.10.0+git20160120.803d5d4/obj/test/math && /usr/bin/cmake -E cmake_link_script CMakeFiles/test_math.dir/link.txt --verbose=1
/usr/bin/c++   -pthread -std=c++11 -W -Wall -Wextra -Wno-unused-parameter -Wno-sign-compare -Wno-unused-variable -Wno-type-limits -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -pipe -Wdate-time -D_FORTIFY_SOURCE=2 --param ggc-min-expand=20   CMakeFiles/test_math.dir/test.cxx.o CMakeFiles/test_math.dir/testsuccess.cxx.o  -o test_math -rdynamic 
Running test_math
cd /«BUILDDIR»/libvigraimpex-1.10.0+git20160120.803d5d4/obj/test/math && ./run_test_math.sh
Illegal instruction
test/math/CMakeFiles/test_math.dir/build.make:123: recipe for target 'test/math/test_math' failed
make[5]: *** [test/math/test_math] Error 1
make[5]: *** Deleting file 'test/math/test_math'
</buildlog>

This needs to be fixed to complete the ongoing transition [2] to build on all
officially supported archs.

DS

[1] https://buildd.debian.org/status/logs.php?pkg=libvigraimpex&arch=mips

[2] https://bugs.debian.org/815153 (transition: libvigraimpex)

-- System Information:
Debian Release: stretch/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 4.3.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=de_DE.utf8, LC_CTYPE=de_DE.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)