shared object linkin problem

rohaanembedded · 07-18-2013, 02:19 AM

Dear sir,

i am trying to use the shared object of libusb in my code but while compilation its giving me error

my Makefile is

Code:

all:
	g++ -fPIC -o lib/libcyusb.o -c lib/libcyusb.c
	g++ -shared -Wl,-soname,libcyusb.so -o lib/libcyusb.so.1 lib/libcyusb.o -l usb-1.0 -l rt
	cd lib; ln -sf libcyusb.so.1 libcyusb.so
	rm -f lib/libcyusb.o
clean:
	rm -f lib/libcyusb.so lib/libcyusb.so.1
help:
	@echo	'make		would compile and create the library and create a link'
	@echo	'make clean	would remove the library and the soft link to the library (soname)'

i am getting error like

Quote:

g++ -fPIC -o lib/libcyusb.o -c lib/libcyusb.c
g++ -shared -Wl,-soname,libcyusb.so -o lib/libcyusb.so.1 lib/libcyusb.o -l usb-1.0 -l rt
/usr/bin/ld: cannot find -lusb-1.0
collect2: ld returned 1 exit status
make: *** [all] Error 1

this thing works really smooth on the ubuntu. what can i do to resolve this please let me know
i am not that gud with RHEL and so linking

thanks & Regards
rohan

pan64 · 07-18-2013, 02:41 AM

do you have libusb-1.0.so somewhere ?

rohaanembedded · 07-18-2013, 02:57 AM

Quote:

Originally Posted by pan64

do you have libusb-1.0.so somewhere ?

Dear sir Thanks for reply i tried to search with "locate libusb" i got this thing

Code:

/usr/lib/libusb-0.1.so.4
/usr/lib/libusb-0.1.so.4.4.4
/usr/lib/libusb.a
/usr/lib/libusb.so
/usr/lib/libusbpp-0.1.so.4

regards
rohaan

rohaanembedded · 07-18-2013, 03:38 AM

Quote:

Originally Posted by rohaanembedded

Dear sir Thanks for reply i tried to search with "locate libusb" i got this thing

Code:

/usr/lib/libusb-0.1.so.4
/usr/lib/libusb-0.1.so.4.4.4
/usr/lib/libusb.a
/usr/lib/libusb.so
/usr/lib/libusbpp-0.1.so.4

regards
rohaan

Dear sir,

i have this Makefile now as i have found there is libusb-0.1.so.4 not libusb-1.0.so

Code:

all:
        g++ -fPIC -o lib/libcyusb.o -c lib/libcyusb.c
        g++ -shared -Wl,-soname,libcyusb.so -o lib/libcyusb.so.1 lib/libcyusb.o  -L /usr/lib/ -l libusb-0.1 -L /usr/lib/ -l rt 
        cd lib; ln -sf libcyusb.so.1 libcyusb.so
        rm -f lib/libcyusb.o
clean:
        rm -f lib/libcyusb.so lib/libcyusb.so.1
help:
        @echo   'make           would compile and create the library and create a link'
        @echo   'make clean     would remove the library and the soft link to the library (soname)'

but now its giving me erroe like

Code:

[root@localhost cyusb_linux_1.0.3]# make
g++ -fPIC -o lib/libcyusb.o -c lib/libcyusb.c
g++ -shared -Wl,-soname,libcyusb.so -o lib/libcyusb.so.1 lib/libcyusb.o  -L /usr/lib/ -l libusb-0.1 -L /usr/lib/ -l rt 
/usr/bin/ld: cannot find -llibusb-0.1
collect2: ld returned 1 exit status
make: *** [all] Error 1

please let me know where i am making the mistake

regards
rohaan

pan64 · 07-18-2013, 03:53 AM

copy (or create a symbolic link to) the lib /usr/lib/libusb-0.1.so.4 or /usr/lib/libusb-0.1.so.4.4.4 into your lib dir using the name libusb-1.0.so and restore your makefile

rohaanembedded · 07-18-2013, 04:26 AM

Quote:

Originally Posted by pan64

copy (or create a symbolic link to) the lib /usr/lib/libusb-0.1.so.4 or /usr/lib/libusb-0.1.so.4.4.4 into your lib dir using the name libusb-1.0.so and restore your makefile

Dear sir,
thank you sir
thank you very much it got compiled but its not getting the functionality from the libusb

if i try to compile my code which uses the libusb.so through the libcyusb.so it gives error like undefined symbols of the API i am using of libusb

like

Code:

[root@localhost src]# make
g++ -o 01_getdesc         01_getdesc.c         -L ../lib -l cyusb
../lib/libcyusb.so: undefined reference to `libusb_clear_halt'
../lib/libcyusb.so: undefined reference to `libusb_get_device_address'
../lib/libcyusb.so: undefined reference to `libusb_close'
../lib/libcyusb.so: undefined reference to `libusb_get_active_config_descriptor'
../lib/libcyusb.so: undefined reference to `libusb_get_config_descriptor_by_value'
../lib/libcyusb.so: undefined reference to `libusb_open'
../lib/libcyusb.so: undefined reference to `libusb_claim_interface'
../lib/libcyusb.so: undefined reference to `libusb_set_configuration'
../lib/libcyusb.so: undefined reference to `libusb_free_device_list'
../lib/libcyusb.so: undefined reference to `libusb_get_device_list'
../lib/libcyusb.so: undefined reference to `libusb_get_max_iso_packet_size'
../lib/libcyusb.so: undefined reference to `libusb_control_transfer'
../lib/libcyusb.so: undefined reference to `libusb_get_config_descriptor'
../lib/libcyusb.so: undefined reference to `libusb_interrupt_transfer'
../lib/libcyusb.so: undefined reference to `libusb_get_bus_number'
../lib/libcyusb.so: undefined reference to `libusb_free_config_descriptor'
../lib/libcyusb.so: undefined reference to `libusb_exit'
../lib/libcyusb.so: undefined reference to `libusb_init'
../lib/libcyusb.so: undefined reference to `libusb_reset_device'
../lib/libcyusb.so: undefined reference to `libusb_set_interface_alt_setting'
../lib/libcyusb.so: undefined reference to `libusb_get_max_packet_size'
../lib/libcyusb.so: undefined reference to `libusb_detach_kernel_driver'
../lib/libcyusb.so: undefined reference to `libusb_open_device_with_vid_pid'
../lib/libcyusb.so: undefined reference to `libusb_get_configuration'
../lib/libcyusb.so: undefined reference to `libusb_get_device_descriptor'
../lib/libcyusb.so: undefined reference to `libusb_kernel_driver_active'
../lib/libcyusb.so: undefined reference to `libusb_bulk_transfer'
../lib/libcyusb.so: undefined reference to `libusb_release_interface'
../lib/libcyusb.so: undefined reference to `libusb_get_device'
../lib/libcyusb.so: undefined reference to `libusb_attach_kernel_driver'
../lib/libcyusb.so: undefined reference to `libusb_get_string_descriptor_ascii'
collect2: ld returned 1 exit status
make: *** [all] Error 1

any suggestions sir to over come this
why this libcyusb.so is not getting the all the functionality from libusb-1.0.so (libcyusb.so created using the Makefile we have disccused)

thanks lot

regards
rohaan

rohaanembedded · 07-18-2013, 05:33 AM

Quote:

Originally Posted by rohaanembedded

Dear sir,
thank you sir
thank you very much it got compiled but its not getting the functionality from the libusb

if i try to compile my code which uses the libusb.so through the libcyusb.so it gives error like undefined symbols of the API i am using of libusb

like

Code:

[root@localhost src]# make
g++ -o 01_getdesc         01_getdesc.c         -L ../lib -l cyusb
../lib/libcyusb.so: undefined reference to `libusb_clear_halt'
../lib/libcyusb.so: undefined reference to `libusb_get_device_address'
../lib/libcyusb.so: undefined reference to `libusb_close'
../lib/libcyusb.so: undefined reference to `libusb_get_active_config_descriptor'
../lib/libcyusb.so: undefined reference to `libusb_get_config_descriptor_by_value'
../lib/libcyusb.so: undefined reference to `libusb_open'
../lib/libcyusb.so: undefined reference to `libusb_claim_interface'
../lib/libcyusb.so: undefined reference to `libusb_set_configuration'
../lib/libcyusb.so: undefined reference to `libusb_free_device_list'
../lib/libcyusb.so: undefined reference to `libusb_get_device_list'
../lib/libcyusb.so: undefined reference to `libusb_get_max_iso_packet_size'
../lib/libcyusb.so: undefined reference to `libusb_control_transfer'
../lib/libcyusb.so: undefined reference to `libusb_get_config_descriptor'
../lib/libcyusb.so: undefined reference to `libusb_interrupt_transfer'
../lib/libcyusb.so: undefined reference to `libusb_get_bus_number'
../lib/libcyusb.so: undefined reference to `libusb_free_config_descriptor'
../lib/libcyusb.so: undefined reference to `libusb_exit'
../lib/libcyusb.so: undefined reference to `libusb_init'
../lib/libcyusb.so: undefined reference to `libusb_reset_device'
../lib/libcyusb.so: undefined reference to `libusb_set_interface_alt_setting'
../lib/libcyusb.so: undefined reference to `libusb_get_max_packet_size'
../lib/libcyusb.so: undefined reference to `libusb_detach_kernel_driver'
../lib/libcyusb.so: undefined reference to `libusb_open_device_with_vid_pid'
../lib/libcyusb.so: undefined reference to `libusb_get_configuration'
../lib/libcyusb.so: undefined reference to `libusb_get_device_descriptor'
../lib/libcyusb.so: undefined reference to `libusb_kernel_driver_active'
../lib/libcyusb.so: undefined reference to `libusb_bulk_transfer'
../lib/libcyusb.so: undefined reference to `libusb_release_interface'
../lib/libcyusb.so: undefined reference to `libusb_get_device'
../lib/libcyusb.so: undefined reference to `libusb_attach_kernel_driver'
../lib/libcyusb.so: undefined reference to `libusb_get_string_descriptor_ascii'
collect2: ld returned 1 exit status
make: *** [all] Error 1

any suggestions sir to over come this
why this libcyusb.so is not getting the all the functionality from libusb-1.0.so (libcyusb.so created using the Makefile we have disccused)

thanks lot

regards
rohaan

dear sir,

i have tried again on the ubuntu its works gud there is my .so creation has got any issue related with the Ubuntu and red aht diffrnce or wrong installation of the libusb rpm what will suggst me please let me know

regards
rohan

pan64 · 07-18-2013, 06:10 AM

probably it depends on the version of libusb*.so, probably you can copy it from the working host to the other one.