On 03/06/2016 20:21, Steven Franke wrote:
> Trying to build the latest on Ubuntu 14.04. This is the machine that is
> connected to my rig, and I’ve been regularly building recent revisions
> without any problems. The latest successful build on this machine was of
> r6711. Now, on r6722 I’m seeing this:
>
> [ 87%] Built target debian
> Linking CXX executable wsjtx
> /usr/bin/ld: Warning: size of symbol `table' changed from 4 in
> libwsjt_cxx.a(dec.c.o) to 408 in
> //usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-4.0.so
> /usr/bin/ld: libwsjt_cxx.a(dec.c.o): undefined reference to symbol 'table'
> //usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-4.0.so: error adding
> symbols: DSO missing from command line
> collect2: error: ld returned 1 exit status
> make[2]: *** [wsjtx] Error 1
> make[1]: *** [CMakeFiles/wsjtx.dir/all] Error 2
> make: *** [all] Error 2
>
> I have recently let the Updater do its thing on this machine, which may be
> what initiated the problem. Has anyone else encountered this and identified
> the fix?
Hi Steve,
the issue is that the symbols exported from lib/ldpc/dec.c are too
generically named and have clashed with something equally generically
named in some pulseaudio module.
I suggest prepending the exported names with something likely to be
unique like ldpc_dec_. Like:
typedef enum
{ Enum_block, Enum_bit, Prprp
} decoding_method;
extern decoding_method ldpc_dec_method; /* Decoding method to use */
extern int ldpc_dec_table; /* Trace option, 2 for a table of decoding
details */
extern int ldpc_dec_block_no; /* Number of current block, from zero */
extern int ldpc_dec_max_iter; /* Maximum number of iteratons of decoding to
do */
extern char *ldpc_dec_gen_file; /* Generator file for Enum_block and
Enum_bit */
/* PROCEDURES RELATING TO DECODING METHODS. */
void ldpc_dec_enum_decode_setup (void);
unsigned ldpc_dec_enum_decode (double *, char *, double *, int);
void ldpc_dec_prprp_decode_setup (void);
unsigned ldpc_dec_prprp_decode (mod2sparse *, double *, char *, char *, double
*);
void ldpc_dec_initprp (mod2sparse *, double *, char *, double *);
void ldpc_dec_iterprp (mod2sparse *, double *, char *, double *);
73
Bill
G4WJS.
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