Is this recommended or required? I noticed it's already pointing to the /usr/local/lib/libpghoto2 (version 2.5.10).
$ ldd /usr/bin/indi_gphoto_ccd
linux-vdso.so.1 => (0x7ec5d000)
/usr/lib/arm-linux-gnueabihf/libarmmem.so (0x76f25000)
libindidriver.so.1 => /usr/lib/arm-linux-gnueabihf/libindidriver.so.1 (0x76e20000)
libcfitsio.so.2 => /usr/lib/arm-linux-gnueabihf/libcfitsio.so.2 (0x76cc5000)
libgphoto2.so.6 => /usr/local/lib/libgphoto2.so.6 (0x76c3b000)
libpthread.so.0 => /lib/arm-linux-gnueabihf/libpthread.so.0 (0x76c17000)
libjpeg.so.8 => /usr/lib/arm-linux-gnueabihf/libjpeg.so.8 (0x76bdf000)
libstdc++.so.6 => /usr/lib/arm-linux-gnueabihf/libstdc++.so.6 (0x76ad0000)
libm.so.6 => /lib/arm-linux-gnueabihf/libm.so.6 (0x76a58000)
libgcc_s.so.1 => /lib/arm-linux-gnueabihf/libgcc_s.so.1 (0x76a30000)
libc.so.6 => /lib/arm-linux-gnueabihf/libc.so.6 (0x76944000)
/lib/ld-linux-armhf.so.3 (0x54b5f000)
libusb-1.0.so.0 => /lib/arm-linux-gnueabihf/libusb-1.0.so.0 (0x76924000)
libnova-0.14.so.0 => /usr/lib/arm-linux-gnueabihf/libnova-0.14.so.0 (0x765a2000)
libz.so.1 => /lib/arm-linux-gnueabihf/libz.so.1 (0x76580000)
libgphoto2_port.so.12 => /usr/local/lib/libgphoto2_port.so.12 (0x76568000)
libltdl.so.7 => /usr/lib/arm-linux-gnueabihf/libltdl.so.7 (0x76552000)
libexif.so.12 => /usr/lib/arm-linux-gnueabihf/libexif.so.12 (0x76516000)
libudev.so.1 => /lib/arm-linux-gnueabihf/libudev.so.1 (0x764ff000)
libdl.so.2 => /lib/arm-linux-gnueabihf/libdl.so.2 (0x764ec000)
librt.so.1 => /lib/arm-linux-gnueabihf/librt.so.1 (0x764d6000)
$ ldd /usr/bin/indi_gphoto_ccd
linux-vdso.so.1 => (0x7ec5d000)
/usr/lib/arm-linux-gnueabihf/libarmmem.so (0x76f25000)
libindidriver.so.1 => /usr/lib/arm-linux-gnueabihf/libindidriver.so.1 (0x76e20000)
libcfitsio.so.2 => /usr/lib/arm-linux-gnueabihf/libcfitsio.so.2 (0x76cc5000)
libgphoto2.so.6 => /usr/local/lib/libgphoto2.so.6 (0x76c3b000)
libpthread.so.0 => /lib/arm-linux-gnueabihf/libpthread.so.0 (0x76c17000)
libjpeg.so.8 => /usr/lib/arm-linux-gnueabihf/libjpeg.so.8 (0x76bdf000)
libstdc++.so.6 => /usr/lib/arm-linux-gnueabihf/libstdc++.so.6 (0x76ad0000)
libm.so.6 => /lib/arm-linux-gnueabihf/libm.so.6 (0x76a58000)
libgcc_s.so.1 => /lib/arm-linux-gnueabihf/libgcc_s.so.1 (0x76a30000)
libc.so.6 => /lib/arm-linux-gnueabihf/libc.so.6 (0x76944000)
/lib/ld-linux-armhf.so.3 (0x54b5f000)
libusb-1.0.so.0 => /lib/arm-linux-gnueabihf/libusb-1.0.so.0 (0x76924000)
libnova-0.14.so.0 => /usr/lib/arm-linux-gnueabihf/libnova-0.14.so.0 (0x765a2000)
libz.so.1 => /lib/arm-linux-gnueabihf/libz.so.1 (0x76580000)
libgphoto2_port.so.12 => /usr/local/lib/libgphoto2_port.so.12 (0x76568000)
libltdl.so.7 => /usr/lib/arm-linux-gnueabihf/libltdl.so.7 (0x76552000)
libexif.so.12 => /usr/lib/arm-linux-gnueabihf/libexif.so.12 (0x76516000)
libudev.so.1 => /lib/arm-linux-gnueabihf/libudev.so.1 (0x764ff000)
libdl.so.2 => /lib/arm-linux-gnueabihf/libdl.so.2 (0x764ec000)
librt.so.1 => /lib/arm-linux-gnueabihf/librt.so.1 (0x764d6000)