No Ubuntu 15.04 64 bits, instalei o Qt5.6 (instalador online) e, ao tentar mover meu ambiente de desenvolvimento do Windows 7 para o Linux, enfrentei o seguinte:

SqlDatabase: QMYSQL driver not loaded

SegueestaEu consegui encontrar~/Qt/5.6/gcc_64/plugins/sqldrivers/libqsqlmysql.so e depois:

$ ldd libqsqlmysql.so
    linux-vdso.so.1 =>  (0x00007ffffd571000)
    libmysqlclient_r.so.16 => not found
    libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007fe94ef24000)
    libcrypt.so.1 => /lib/x86_64-linux-gnu/libcrypt.so.1 (0x00007fe94ecec000)
    libnsl.so.1 => /lib/x86_64-linux-gnu/libnsl.so.1 (0x00007fe94ead2000)
    libssl.so.10 => not found
    libcrypto.so.10 => not found
    libQt5Sql.so.5 => /home/user/Qt/5.6/gcc_64/plugins/sqldrivers/../../lib/libQt5Sql.so.5 (0x00007fe94e88d000)
    libQt5Core.so.5 => /home/user/Qt/5.6/gcc_64/plugins/sqldrivers/../../lib/libQt5Core.so.5 (0x00007fe94e17a000)
    libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007fe94df5c000)
    libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007fe94dc4d000)
    libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007fe94d944000)
    libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007fe94d72e000)
    libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fe94d364000)
    libicui18n.so.56 => /home/user/Qt/5.6/gcc_64/plugins/sqldrivers/../../lib/libicui18n.so.56 (0x00007fe94cec9000)
    libicuuc.so.56 => /home/user/Qt/5.6/gcc_64/plugins/sqldrivers/../../lib/libicuuc.so.56 (0x00007fe94cb11000)
    libicudata.so.56 => /home/user/Qt/5.6/gcc_64/plugins/sqldrivers/../../lib/libicudata.so.56 (0x00007fe94b12e000)
    libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007fe94af29000)
    libgthread-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgthread-2.0.so.0 (0x00007fe94ad27000)
    librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007fe94ab1f000)
    libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007fe94a80f000)
    /lib64/ld-linux-x86-64.so.2 (0x000056024837f000)
    libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007fe94a5a2000)

Dizlibmysqlclient_r.so.16 => not found. De fato, parece que tenho uma versão mais recente:

find / -name libmysqlclient_r*
/usr/lib/x86_64-linux-gnu/libmysqlclient_r.so.18
/usr/lib/x86_64-linux-gnu/libmysqlclient_r.so.18.1.0
/usr/lib/x86_64-linux-gnu/libmysqlclient_r.so
/usr/lib/x86_64-linux-gnu/libmysqlclient_r.a

Talvez seja esse o problema. Alguém poderia confirmar? Como devo proceder?