Bug#1017512: freeimage FTBFS with openexr 3.1.5

[Adrian Bunk]

Source: freeimage
Version: 3.18.0+ds2-7
Severity: serious
Tags: ftbfs

https://buildd.debian.org/status/fetch.php?pkg=freeimage&arch=ppc64el&ver=3.18.0%2Bds2-7%2Bb1&stamp=1660728995&raw=0

...
Source/FreeImage/PluginEXR.cpp:40:10: fatal error: OpenEXR/half.h: No such file or directory
   40 | #include <OpenEXR/half.h>
      |          ^~~~~~~~~~~~~~~~
compilation terminated.
make[3]: *** [Makefile.gnu:66: Source/FreeImage/PluginEXR.o] Error 1