Hello list, short description: in 1.38, after manual compilation on OL7.4, tests fail; the closest error in logs is guestfsd --verbose failing for libyajl not found, even if it appears correctly linked by the guestfsd executable. Any help/suggestion? My environment is a bit tricky as I work on Oracle Linux 7.4; in my experience it is 99.9% assimilable to RHEL. The server I am using is dedicated to an application embedding libguestfs to analyse the content of VMs, and other things. I build libguestfs from source, instead of relying on the version installed by yum (I also use VirtualBox in this server, I need to use force_tcg=1 and I had issues with the pre-compiled version when I tried). I install all the dependencies which I have to compile manually in ~/install and prepend the following env to anything (configure / make / make install and tests). env LIBGUESTFS_BACKEND_SETTINGS="force_tcg=1" LIBGUESTFS_DEBUG=1 LIBGUESTFS_TRACE=1 CPPFLAGS="-I/home/vm/install/include -I/home/vm/install/usr/include" LDFLAGS="-L/home/vm/install/lib -L/home/vm/install/usr/lib" PATH="/home/vm/install/bin:$PATH" After compilation, make check fails with a crash of the appliance; same happens with libguestfs-test-tool. Here is the final part of the log + cmd='guestfsd --verbose' + test '' = 1 + false + test '' = 1 + echo guestfsd --verbose guestfsd --verbose + guestfsd --verbose guestfsd: error while loading shared libraries: libyajl.so.2: cannot open shared object file: No such file or directory + sync + test '' = 1 + reboot -f Rebooting. [    6.194831] kvm: exiting hardware virtualization [    6.195551] sd 2:0:1:0: [sdb] Synchronizing SCSI cache [    6.196217] sd 2:0:0:0: [sda] Synchronizing SCSI cache [    6.197375] reboot: Restarting system [    6.197484] reboot: machine restart libguestfs: error: appliance closed the connection unexpectedly, see earlier error messages libguestfs: child_cleanup: 0xf4a160: child process died libguestfs: sending SIGTERM to process 20925 libguestfs: qemu maxrss 342340K libguestfs: error: guestfs_launch failed, see earlier error messages libguestfs: trace: launch = -1 (error) libguestfs: trace: close libguestfs: closing guestfs handle 0xf4a160 (state 0) libguestfs: command: run: rm libguestfs: command: run: \ -rf /tmp/libguestfsGxWqKQ libguestfs: command: run: rm libguestfs: command: run: \ -rf /run/user/500/libguestfssLfpo6 My guess (not much sustained by data, other than message proximity) is that guestfsd cannot find libyajl.so.2, the verbose mode fails, and even if it finishes, perhaps an error message in the log makes the test fail. I am using yajl in yum, but I also tried to compile version 2.1.0 manually and it did not change $ sudo yum install yajl yajl-devel Loaded plugins: ulninfo Package yajl-2.0.4-4.el7.x86_64 already installed and latest version Package yajl-devel-2.0.4-4.el7.x86_64 already installed and latest version The guestfsd executable in appliance/supermin.d/ seems to link yajl correctly $ cp -r libguestfs-1.38.0/appliance/supermin.d/*tar.gz /tmp/supermin.d/ $ cd /tmp/supermin.d/ $ for i in *tar.gz; do tar -xzf $i; done $ ldd ./usr/sbin/guestfsd     linux-vdso.so.1 =>  (0x00007fff4392d000)     libacl.so.1 => /lib64/libacl.so.1 (0x00007f1a8919e000)     libcap.so.2 => /lib64/libcap.so.2 (0x00007f1a88f99000)     libyajl.so.2 => /lib64/libyajl.so.2 (0x00007f1a88d8e000)     libselinux.so.1 => /lib64/libselinux.so.1 (0x00007f1a88b67000)     libaugeas.so.0 => /lib64/libaugeas.so.0 (0x00007f1a8891b000)     libhivex.so.0 => /home/vm/install/lib/libhivex.so.0 (0x00007f1a88708000)     libiconv.so.2 => /home/vm/install/lib/libiconv.so.2 (0x00007f1a88422000)     libsystemd.so.0 => /lib64/libsystemd.so.0 (0x00007f1a883fa000)     libpcre.so.1 => /lib64/libpcre.so.1 (0x00007f1a88197000)     libdl.so.2 => /lib64/libdl.so.2 (0x00007f1a87f93000)     libm.so.6 => /lib64/libm.so.6 (0x00007f1a87c91000)     libc.so.6 => /lib64/libc.so.6 (0x00007f1a878cd000)     libattr.so.1 => /lib64/libattr.so.1 (0x00007f1a876c8000)     /lib64/ld-linux-x86-64.so.2 (0x000055c87ee30000)     libfa.so.1 => /lib64/libfa.so.1 (0x00007f1a874b5000)     libxml2.so.2 => /lib64/libxml2.so.2 (0x00007f1a8714a000)     libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007f1a86f34000)     librt.so.1 => /lib64/librt.so.1 (0x00007f1a86d2c000)     liblzma.so.5 => /lib64/liblzma.so.5 (0x00007f1a86b05000)     libgcrypt.so.11 => /lib64/libgcrypt.so.11 (0x00007f1a86884000)     libgpg-error.so.0 => /lib64/libgpg-error.so.0 (0x00007f1a8667f000)     libresolv.so.2 => /lib64/libresolv.so.2 (0x00007f1a86464000)     libdw.so.1 => /lib64/libdw.so.1 (0x00007f1a8621d000)     libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f1a86001000)     libz.so.1 => /lib64/libz.so.1 (0x00007f1a85dea000)     libelf.so.1 => /lib64/libelf.so.1 (0x00007f1a85bd2000)     libbz2.so.1 => /lib64/libbz2.so.1 (0x00007f1a859c1000) $ file /lib64/libyajl.so.2.0.4 /lib64/libyajl.so.2 /lib64/libyajl.so.2.0.4: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, BuildID[sha1]=b568a12b3f954f8a7fc2be567df484ccc5b1e058, stripped /lib64/libyajl.so.2:     symbolic link to `libyajl.so.2.0.4' Attached the output of ./libguestfs-test-tool run using this line $ env LIBGUESTFS_BACKEND_SETTINGS="force_tcg=1" LIBGUESTFS_PATH=/home/vm/building7.4/deps4libguestfs/libguestfs-1.38.0/appliance LIBGUESTFS_DEBUG=1 LIBGUESTFS_TRACE=1 CPPFLAGS="-I/home/vm/install/include -I/home/vm/install/usr/include" LDFLAGS="-L/home/vm/install/lib -L/home/vm/install/usr/lib" PATH="/home/vm/install/bin:$PATH" ./libguestfs-test-tool > libyajl.test-fail.out 2>&1 I am either missing something trivial OR this is not the cause of failure. In both cases, any help is greatly appreciated Thanks in advance