nickmcummins > qt6ct
Cannot mix incompatible Qt library (6.5.2) with this library (6.5.3)
[1] 26923 IOT instruction (core dumped) qt6ct
In order to determine the problematic library, use the strace command:
> sudo strace qt6ct
mmap(NULL, 24912, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 9, 0) = 0x7f90a0382000
mmap(0x7f90a0385000, 4096, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 9, 0x3000) = 0x7f90a0385000
mmap(0x7f90a0386000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 9, 0x4000) = 0x7f90a0386000
mmap(0x7f90a0387000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 9, 0x4000) = 0x7f90a0387000
close(9) = 0
mprotect(0x7f90a0387000, 4096, PROT_READ) = 0
statx(AT_FDCWD, "/root/.config/qt6ct/qt6ct.conf", AT_STATX_SYNC_AS_STAT|AT_NO_AUTOMOUNT, STATX_ALL, {stx_mask=STATX_ALL|STATX_MNT_ID, stx_attributes=0, stx_mode=S_IFREG|0644, stx_size=855, ...}) = 0
newfstatat(AT_FDCWD, "/etc/localtime", {st_mode=S_IFREG|0644, st_size=2852, ...}, 0) = 0
openat(AT_FDCWD, "/usr/lib/qt6/plugins/styles/libqt6gtk2-style.so.avx2", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
access("/usr/lib/qt6/plugins/styles/libqt6gtk2-style.so.avx2", F_OK) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/lib/qt6/plugins/styles/libqt6gtk2-style.so", O_RDONLY|O_CLOEXEC) = 9
read(9, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\0\0\0\0\0\0\0\0"..., 832) = 832
newfstatat(9, "", {st_mode=S_IFREG|0755, st_size=236056, ...}, AT_EMPTY_PATH) = 0
mmap(NULL, 234272, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 9, 0) = 0x7f909bc9a000
mmap(0x7f909bca5000, 155648, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 9, 0xb000) = 0x7f909bca5000
mmap(0x7f909bccb000, 24576, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 9, 0x31000) = 0x7f909bccb000
mmap(0x7f909bcd1000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 9, 0x37000) = 0x7f909bcd1000
close(9) = 0
mprotect(0x7f909bcd1000, 8192, PROT_READ) = 0
openat(AT_FDCWD, "/dev/tty", O_RDONLY|O_CLOEXEC) = 9
close(9) = 0
write(2, "Cannot mix incompatible Qt libra"..., 69Cannot mix incompatible Qt library (6.5.2) with this library (6.5.3)
After finding the problematic library, use pacman -Qo to find the package providing this file:
> pacman -Qo /usr/lib/qt6/plugins/styles/libqt6gtk2-style.so
/usr/lib/qt6/plugins/styles/libqt6gtk2-style.so is owned by qt6gtk2-git 0.2.r5.g441f266-1
After rebuilding qt6gtk2, qt6ct launches successfully.