[sane-devel] Canoscan 8400F

[Stef]

On 29/10/2014 12:18, Myroslav Kavatsyuk wrote:
> Dear Stef,
>
> Thanks a lot for a provided example. From your code I have made a 
> program (see attachment) which
> compiles. However, I can not link it with the libsane-genesys. 
> apparently I miss something.
>
> I have compiled SANE libraries as following:
> > export BACKENDS=genesys
> > export CFLAGS="-D UNIT_TESTING"
> > ./configure --prefix=.....
>
> The program compiles perfectly as:
> > gcc -I ./compile/include/ -I ./compile/backend/ -c tst_scan.c
>
> But when trying to link against libsane-genesys library gcc complains:
> > gcc -I ./compile/include/ -I ./compile/backend/ -L ./local/lib/sane/ 
> -l sane-genesys tst_scan.c -o tst_scan
> /tmp/cc958m4x.o: In function `sanei_debug_genesys_call':
> tst_scan.c:(.text+0xad): undefined reference to `sanei_debug_msg'
> /tmp/cc958m4x.o: In function `main':
> tst_scan.c:(.text+0xcd): undefined reference to `sanei_init_debug'
> tst_scan.c:(.text+0xe0): undefined reference to `sane_genesys_init'
> tst_scan.c:(.text+0xf3): undefined reference to `sane_strstatus'
> tst_scan.c:(.text+0x120): undefined reference to `sane_genesys_open'
> tst_scan.c:(.text+0x133): undefined reference to `sane_strstatus'
> tst_scan.c:(.text+0x14a): undefined reference to `sane_genesys_exit'
> tst_scan.c:(.text+0x188): undefined reference to 
> `sanei_genesys_compute_dpihw'
> tst_scan.c:(.text+0x2b0): undefined reference to `gl843_init_scan_regs'
> tst_scan.c:(.text+0x2ec): undefined reference to `sane_strstatus'
> tst_scan.c:(.text+0x32c): undefined reference to `gl843_begin_scan'
> tst_scan.c:(.text+0x33f): undefined reference to `sane_strstatus'
> tst_scan.c:(.text+0x3b8): undefined reference to 
> `sanei_genesys_read_data_from_scanner'
> tst_scan.c:(.text+0x3d4): undefined reference to `gl843_end_scan'
> tst_scan.c:(.text+0x3e7): undefined reference to `sane_strstatus'
> tst_scan.c:(.text+0x42b): undefined reference to 
> `sanei_genesys_write_pnm_file'
> tst_scan.c:(.text+0x45b): undefined reference to `sane_genesys_close'
> tst_scan.c:(.text+0x460): undefined reference to `sane_genesys_exit'
>
> If I try to use libtool, it complains that I am linking against 
> loadable module
>
> Apparently I am doing something wrong.
> Please let me know what is the proper way of compiling a unit testing 
> program.
>
> Thanks a lot,
> Myroslav
>
     Hello,

     is the libsane-genesys also built with -DUNIT_TESTING ? These 
private symbols aren't made public until UNIT_TESTING is defined.

Regards,
     Stef
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