Bug#882295: ploop FTBFS with glibc 2.25

[Adrian Bunk <bunk@debian.org>]

Source: ploop
Version: 1.15-3
Severity: serious

https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/ploop.html

...
  CC       delta_sysfs.o
delta_sysfs.c: In function 'get_dev_num':
delta_sysfs.c:241:13: error: In the GNU C Library, "makedev" is defined
 by <sys/sysmacros.h>. For historical compatibility, it is
 currently defined by <sys/types.h> as well, but we plan to
 remove this soon. To use "makedev", include <sys/sysmacros.h>
 directly. If you did not intend to use a system-defined macro
 "makedev", you should undefine it after including <sys/types.h>. [-Werror]
  *dev_num = makedev(maj, min);
             ^~~~~~~~~~~~~~~~~~                                                                                                                                                                                                                                                                                                                                                            
cc1: all warnings being treated as errors
../Makefile.inc:48: recipe for target 'delta_sysfs.o' failed
make[2]: *** [delta_sysfs.o] Error 1