[maemo-developers] Help getting round compiler a error (compiling CLN)

[From: rael at edge.ping.de]

Hello! 

> .libs/libcln.so.4.0.2
> .libs/cl_I_ring.o: In function `cln::zerop(cln::cl_I
> const&)':cl_I_ring.cc:(.text._ZN3cln5zeropERKNS_4cl_IE[cln::zerop(cln::cl_I
> const&)]+0x0): multiple definition of `cln::zerop(cln::cl_I const&)'
> .libs/cl_I_zerop.o:cl_I_zerop.cc:(.text+0x0): first defined here
> .libs/cl_RA_ring.o: In function `cln::zerop(cln::cl_RA
> const&)':cl_RA_ring.cc:(.text._ZN3cln5zeropERKNS_5cl_RAE[cln::zerop(cln::cl_RA
> const&)]+0x0): multiple definition of `cln::zerop(cln::cl_RA const&)'
> .libs/cl_RA_zerop.o:cl_RA_zerop.cc:(.text+0x0): first defined here
> .libs/cl_R_signum.o: In function `cln::signum(cln::cl_I
> const&)':cl_R_signum.cc:(.text._ZN3cln6signumERKNS_4cl_IE[cln::signum(cln::cl_I const&)]+0x0): multiple definition of 
> `cln::signum(cln::cl_I
> const&)'
> .libs/cl_I_signum.o:cl_I_signum.cc:(.text+0x0): first defined here
> collect2: ld returned 1 exit status
> make[2]: *** [libcln.la] Error 1
> make[2]: Leaving directory `/home/simon/build/qcalculate/cln-1.1.13.orig/src'
> make[1]: *** [all] Error 2
> make[1]: Leaving directory `/home/simon/build/qcalculate/cln-1.1.13.orig'
> make: *** [build] Error 2

Duplicate symbols during linking is normally cause by having code/functions 
with the same name in to different object files. This could again be caused 
in general having problems with code in headers or wrong includes, like for 
example having functions in headers that are not marked as inline or using 
defines that contain whole functions or similar... 

I suggest to search (grep) for the named symbols in the header files of the 
cod efirst and see if there is something suspicios. Of course it can also be 
possible to have the function implemented in two source modules. 

One would have to look at the source code to give better answers ;-) (and 
I'm at work). 

-- 
Gruß...
      Tim.