Bug#788975: FTBFS: libraw_datastream.h: error: exception handling disabled

["Chris West \(Faux\)" <solo-debianbugs@goeswhere.com>]

Source: libkdcraw
Version: 4:4.14.0-1
Severity: serious
Justification: fails to build from source (but built successfully in the past)

Dear Maintainer,

The package fails to build in sid, possibly due to a libraw or gcc change:

In file included from /usr/include/libraw/libraw.h:40:0,
                 from ../../libkdcraw/kdcraw_p.h:39,
                 from ../../libkdcraw/kdcraw_p.cpp:27:
/usr/include/libraw/libraw_datastream.h: In member function 'virtual int LibRaw_buffer_datastream::get_char()':
/usr/include/libraw/libraw_datastream.h:154:17: error: exception handling disabled, use -fexceptions to enable
           throw LIBRAW_EXCEPTION_IO_EOF;

The full build log can be seen on the Reproducible Builds builder:
https://reproducible.debian.net/rb-pkg/unstable/amd64/libkdcraw.html

-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 3.19.0-20-generic (SMP w/8 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)