ldd

$ ldd -r /usr/lib/libpq.so
	linux-vdso.so.1 =>  (0x00007fffd7ff1000)
	libssl.so.1.0.0 => /lib/x86_64-linux-gnu/libssl.so.1.0.0 (0x00007f0f883a0000)
	libcrypto.so.1.0.0 => /lib/x86_64-linux-gnu/libcrypto.so.1.0.0 (0x00007f0f87fc5000)
	libkrb5.so.3 => /usr/lib/x86_64-linux-gnu/libkrb5.so.3 (0x00007f0f87cf6000)
	libcom_err.so.2 => /lib/x86_64-linux-gnu/libcom_err.so.2 (0x00007f0f87af2000)
	libgssapi_krb5.so.2 => /usr/lib/x86_64-linux-gnu/libgssapi_krb5.so.2 (0x00007f0f878b4000)
	libldap_r-2.4.so.2 => /usr/lib/x86_64-linux-gnu/libldap_r-2.4.so.2 (0x00007f0f87664000)
	libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f0f87447000)
	libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f0f87087000)
	libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f0f86e82000)
	libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f0f86c6b000)
	libk5crypto.so.3 => /usr/lib/x86_64-linux-gnu/libk5crypto.so.3 (0x00007f0f86a43000)
	libkrb5support.so.0 => /usr/lib/x86_64-linux-gnu/libkrb5support.so.0 (0x00007f0f8683a000)
	libkeyutils.so.1 => /lib/x86_64-linux-gnu/libkeyutils.so.1 (0x00007f0f86636000)
	libresolv.so.2 => /lib/x86_64-linux-gnu/libresolv.so.2 (0x00007f0f8641a000)
	/lib64/ld-linux-x86-64.so.2 (0x00007f0f88831000)
	liblber-2.4.so.2 => /usr/lib/x86_64-linux-gnu/liblber-2.4.so.2 (0x00007f0f8620b000)
	libsasl2.so.2 => /usr/lib/x86_64-linux-gnu/libsasl2.so.2 (0x00007f0f85ff0000)
	libgssapi.so.3 => /usr/lib/x86_64-linux-gnu/libgssapi.so.3 (0x00007f0f85db2000)
	libgnutls.so.26 => /usr/lib/x86_64-linux-gnu/libgnutls.so.26 (0x00007f0f85af5000)
	libgcrypt.so.11 => /lib/x86_64-linux-gnu/libgcrypt.so.11 (0x00007f0f85877000)
	libheimntlm.so.0 => /usr/lib/x86_64-linux-gnu/libheimntlm.so.0 (0x00007f0f8566f000)
	libkrb5.so.26 => /usr/lib/x86_64-linux-gnu/libkrb5.so.26 (0x00007f0f853e9000)
	libasn1.so.8 => /usr/lib/x86_64-linux-gnu/libasn1.so.8 (0x00007f0f85149000)
	libhcrypto.so.4 => /usr/lib/x86_64-linux-gnu/libhcrypto.so.4 (0x00007f0f84f14000)
	libroken.so.18 => /usr/lib/x86_64-linux-gnu/libroken.so.18 (0x00007f0f84cff000)
	libtasn1.so.3 => /usr/lib/x86_64-linux-gnu/libtasn1.so.3 (0x00007f0f84aee000)
	libp11-kit.so.0 => /usr/lib/x86_64-linux-gnu/libp11-kit.so.0 (0x00007f0f848db000)
	libgpg-error.so.0 => /lib/x86_64-linux-gnu/libgpg-error.so.0 (0x00007f0f846d7000)
	libwind.so.0 => /usr/lib/x86_64-linux-gnu/libwind.so.0 (0x00007f0f844ae000)
	libheimbase.so.1 => /usr/lib/x86_64-linux-gnu/libheimbase.so.1 (0x00007f0f8429e000)
	libhx509.so.5 => /usr/lib/x86_64-linux-gnu/libhx509.so.5 (0x00007f0f84054000)
	libsqlite3.so.0 => /usr/lib/x86_64-linux-gnu/libsqlite3.so.0 (0x00007f0f83db1000)
	libcrypt.so.1 => /lib/x86_64-linux-gnu/libcrypt.so.1 (0x00007f0f83b77000)