Experimental Physics and
Industrial Control System

Folks,

 

We are having a strange problem building the synApps dxp module on a new Ubuntu 22 system.

 

This is the command that fails:

 

/usr/bin/g++ -o dxpApp  -L/home/epics/synApps/support/dxp-R6-0/lib/linux-x86_64 -L/home/epics/synApps/support/areaDetector-R3-11/ADCore/lib/linux-x86_64 -L/home/epics/synApps/support/areaDetector-R3-11/ADSupport/lib/linux-x86_64 -L/home/epics/synApps/support/asyn-R4-42/lib/linux-x86_64 -L/home/epics/synApps/support/autosave-R5-10-2/lib/linux-x86_64 -L/home/epics/synApps/support/busy-R1-7-3/lib/linux-x86_64 -L/home/epics/synApps/support/calc-R3-7-4/lib/linux-x86_64 -L/home/epics/synApps/support/iocStats-3-1-16/lib/linux-x86_64 -L/home/epics/synApps/support/mca-R7-9/lib/linux-x86_64 -L/home/epics/synApps/support/seq-2-2-9/lib/linux-x86_64 -L/home/epics/synApps/support/sscan-R2-11-5/lib/linux-x86_64 -L/usr/local/epics/base-R7.0.4.1/lib/linux-x86_64 -Wl,-rpath,/home/epics/synApps/support/dxp-R6-0/lib/linux-x86_64 -Wl,-rpath,/home/epics/synApps/support/areaDetector-R3-11/ADCore/lib/linux-x86_64 -Wl,-rpath,/home/epics/synApps/support/areaDetector-R3-11/ADSupport/lib/linux-x86_64 -Wl,-rpath,/home/epics/synApps/support/asyn-R4-42/lib/linux-x86_64 -Wl,-rpath,/home/epics/synApps/support/autosave-R5-10-2/lib/linux-x86_64 -Wl,-rpath,/home/epics/synApps/support/busy-R1-7-3/lib/linux-x86_64 -Wl,-rpath,/home/epics/synApps/support/calc-R3-7-4/lib/linux-x86_64 -Wl,-rpath,/home/epics/synApps/support/iocStats-3-1-16/lib/linux-x86_64 -Wl,-rpath,/home/epics/synApps/support/mca-R7-9/lib/linux-x86_64 -Wl,-rpath,/home/epics/synApps/support/seq-2-2-9/lib/linux-x86_64 -Wl,-rpath,/home/epics/synApps/support/sscan-R2-11-5/lib/linux-x86_64 -Wl,-rpath,/usr/local/epics/base-R7.0.4.1/lib/linux-x86_64          -rdynamic -m64         dxpMain.o dxp_registerRecordDeviceDriver.o    -ldxp -lhandel -lmca -lseq -lpv -lNDPlugin -lADBase -lnetCDF -lMagick++ -lcoders -lMagick -ljbig -ljp2 -lbzlib -lpng -lwebp -llcms -lttf -lwmf -lfilters -lnanohttp_stream -ltiff -lxml2 -lNeXus -lhdf5 -lhdf5_hl -lbitshuffle -lblosc -lszip -lzlib -ljpeg -lasyn -lautosave -lbusy -lcalc -ldevIocStats -lsscan -lseq -lpv -ldbRecStd -ldbCore -lca -lCom  -lusb -lX11 -lXext

/usr/bin/ld: /home/epics/synApps/support/dxp-R6-0/lib/linux-x86_64/libhandel.so: undefined reference to `usb_open'

/usr/bin/ld: /home/epics/synApps/support/dxp-R6-0/lib/linux-x86_64/libhandel.so: undefined reference to `usb_release_interface'

/usr/bin/ld: /home/epics/synApps/support/dxp-R6-0/lib/linux-x86_64/libhandel.so: undefined reference to `usb_find_devices'

/usr/bin/ld: /home/epics/synApps/support/dxp-R6-0/lib/linux-x86_64/libhandel.so: undefined reference to `usb_set_configuration'

/usr/bin/ld: /home/epics/synApps/support/dxp-R6-0/lib/linux-x86_64/libhandel.so: undefined reference to `usb_init'

/usr/bin/ld: /home/epics/synApps/support/dxp-R6-0/lib/linux-x86_64/libhandel.so: undefined reference to `usb_bulk_write'

/usr/bin/ld: /home/epics/synApps/support/dxp-R6-0/lib/linux-x86_64/libhandel.so: undefined reference to `usb_set_debug'

/usr/bin/ld: /home/epics/synApps/support/dxp-R6-0/lib/linux-x86_64/libhandel.so: undefined reference to `usb_reset'

/usr/bin/ld: /home/epics/synApps/support/dxp-R6-0/lib/linux-x86_64/libhandel.so: undefined reference to `usb_claim_interface'

/usr/bin/ld: /home/epics/synApps/support/dxp-R6-0/lib/linux-x86_64/libhandel.so: undefined reference to `usb_close'

/usr/bin/ld: /home/epics/synApps/support/dxp-R6-0/lib/linux-x86_64/libhandel.so: undefined reference to `usb_get_busses'

/usr/bin/ld: /home/epics/synApps/support/dxp-R6-0/lib/linux-x86_64/libhandel.so: undefined reference to `usb_find_busses'

/usr/bin/ld: /home/epics/synApps/support/dxp-R6-0/lib/linux-x86_64/libhandel.so: undefined reference to `usb_bulk_read'

 

It is not finding the usb_* functions.  However, the third to last argument in the link command is –lusb.

 

This code uses the “old” version of libusb, i.e. libusb-0.1.x, not the new libusb-1.0.x.

 

The libusb-dev package is installed.  This is the library file:

 

epics@chemmat91:~/synApps/support/dxp-R6-0$ ls -l /usr/lib/x86_64-linux-gnu/libusb.so

-rw-r--r-- 1 root root 74 Mar 24 11:20 /usr/lib/x86_64-linux-gnu/libusb.so

 

That file is a GNU ld script:

 

epics@chemmat91:~/synApps/support/dxp-R6-0$ more /usr/lib/x86_64-linux-gnu/libusb.so

/* GNU ld script.  */

GROUP ( /lib/x86_64-linux-gnu/libusb-0.1.so.4.4.4 )

 

It points to lib/x86_64-linux-gnu/libusb-0.1.so.4.4.4.

 

This is the output of nm on that file showing symbols starting with usb_.  Note that all of the missing symbols in the link command are indeed defined in this file.

 

epics@chemmat91:~/synApps/support/dxp-R6-0$ nm -D /lib/x86_64-linux-gnu/libusb-0.1.so.4.4.4 | grep usb_

00000000000045b0 T usb_bulk_read

0000000000004590 T usb_bulk_write

000000000000b148 B usb_busses

0000000000003b70 T usb_claim_interface

0000000000005920 T usb_clear_halt

0000000000003a70 T usb_close

0000000000003ea0 T usb_control_msg

000000000000b144 B usb_debug

0000000000003790 T usb_destroy_configuration

0000000000005bc0 T usb_detach_kernel_driver_np

0000000000002be0 T usb_device

0000000000009120 B usb_error_errno

0000000000009140 B usb_error_str

000000000000b140 B usb_error_type

00000000000041c0 T usb_fetch_and_parse_descriptors

0000000000004830 T usb_find_busses

00000000000053e0 T usb_find_devices

0000000000002c00 T usb_free_bus

0000000000003900 T usb_free_dev

0000000000002bf0 T usb_get_busses

0000000000004160 T usb_get_descriptor

00000000000040f0 T usb_get_descriptor_by_endpoint

0000000000005ab0 T usb_get_driver_np

0000000000003fa0 T usb_get_string

0000000000003fd0 T usb_get_string_simple

0000000000005810 T usb_init

00000000000045f0 T usb_interrupt_read

00000000000045d0 T usb_interrupt_write

0000000000003950 T usb_open

00000000000039c0 T usb_os_close

0000000000005140 T usb_os_determine_children

0000000000004610 T usb_os_find_busses

0000000000004a00 T usb_os_find_devices

0000000000005610 T usb_os_init

0000000000003930 T usb_os_open

0000000000002d50 T usb_parse_configuration

0000000000002c70 T usb_parse_descriptor

0000000000003ca0 T usb_release_interface

00000000000059f0 T usb_reset

0000000000005850 T usb_resetep

0000000000003d70 T usb_set_altinterface

0000000000003aa0 T usb_set_configuration

0000000000002b80 T usb_set_debug

0000000000002c10 T usb_strerror

 

Any ideas what could be wrong?

 

Thanks,

Mark