Building fails using the CMakeLists.ubuntu.txt on recent versions of Ubuntu (21.04 in my case).
It fails with the following error:
-----8<-----
[ 50%] Building C object CMakeFiles/zpool_prometheus.dir/zpool_prometheus.c.o
In file included from /usr/include/libspl/sys/mnttab.h:35,
from /usr/include/libzfs/libzfs.h:38,
from /zpool_prometheus/zpool_prometheus.c:46:
/usr/include/libspl/sys/stat.h:37:28: warning: 'struct stat64' declared inside parameter list will not be visible outside of this definition or declaration
37 | fstat64_blk(int fd, struct stat64 *st)
| ^~~~~~
/usr/include/libspl/sys/stat.h: In function 'fstat64_blk':
/usr/include/libspl/sys/stat.h:39:6: warning: implicit declaration of function 'fstat64'; did you mean 'fstatat'? [-Wimplicit-function-declaration]
39 | if (fstat64(fd, st) == -1)
| ^~~~~~~
| fstatat
In file included from /usr/include/libspl/sys/stat.h:29,
from /usr/include/libspl/sys/mnttab.h:35,
from /usr/include/libzfs/libzfs.h:38,
from /zpool_prometheus/zpool_prometheus.c:46:
/usr/include/libspl/sys/stat.h:43:16: error: invalid use of undefined type 'struct stat64'
43 | if (S_ISBLK(st->st_mode)) {
| ^~
In file included from /usr/include/libspl/sys/mnttab.h:35,
from /usr/include/libzfs/libzfs.h:38,
from /zpool_prometheus/zpool_prometheus.c:46:
/usr/include/libspl/sys/stat.h:44:34: error: invalid use of undefined type 'struct stat64'
44 | if (ioctl(fd, BLKGETSIZE64, &st->st_size) != 0)
| ^~
In file included from /usr/include/libzfs/libzfs.h:38,
from /zpool_prometheus/zpool_prometheus.c:46:
/usr/include/libspl/sys/mnttab.h: At top level:
/usr/include/libspl/sys/mnttab.h:76:12: warning: 'struct stat64' declared inside parameter list will not be visible outside of this definition or declaration
76 | struct stat64 *statbuf);
| ^~~~~~
make[2]: *** [CMakeFiles/zpool_prometheus.dir/build.make:82: CMakeFiles/zpool_prometheus.dir/zpool_prometheus.c.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:95: CMakeFiles/zpool_prometheus.dir/all] Error 2
make: *** [Makefile:171: all] Error 2
It built on the latest LTS release (i.e. 20.04). The CMakeLists.txt works on both.
It looks like the difference was the missing -D_LARGEFILE64_SOURCE flag.
Building fails using the
CMakeLists.ubuntu.txton recent versions of Ubuntu (21.04 in my case).It fails with the following error:
It built on the latest LTS release (i.e. 20.04). The
CMakeLists.txtworks on both. It looks like the difference was the missing-D_LARGEFILE64_SOURCEflag.