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

[From: Simon Pickering]

Hello all,

At the start of the year I tried to compile CLN 
(http://www.ginac.de/CLN/) and although the compilation worked fine, 
the linking into a shared library at the end didn't. I asked on the CLN 
list and was given a couple of suggestions to fix this issue, the last 
of which was to "change your compiler". Unfortunately this isn't 
possible (unless OS2008 uses a different version of GCC?) so I thought 
I'd ask and see if anyone has any other suggestions.

The error is this:

/bin/sh ../libtool --mode=link g++ -o libcln.la -rpath /usr/lib
-version-info 4:2:0  -lgmp -objectlist libcln.objectlist
g++ -shared -nostdlib
/scratchbox/compilers/cs2005q3.2-glibc-arm/lib/gcc/arm-none-linux-gnueabi/3.4.4/../../../../arm-none-linux-gnueabi/lib/crti.o

<snip>

.libs/cl_asm_.o  /usr/lib/libgmp.so
-L/scratchbox/compilers/cs2005q3.2-glibc-arm/lib/gcc/arm-none-linux-gnueabi/3.4.4 -L/usr/lib/gcc/arm-none-linux-gnueabi/3.4.4 -L/scratchbox/compilers/cs2005q3.2-glibc-arm/lib/gcc/arm-none-linux-gnueabi/3.4.4/../../../../arm-none-linux-gnueabi/lib -lstdc++ -lm -lc -lgcc_s /scratchbox/compilers/cs2005q3.2-glibc-arm/lib/gcc/arm-none-linux-gnueabi/3.4.4/crtendS.o /scratchbox/compilers/cs2005q3.2-glibc-arm/lib/gcc/arm-none-linux-gnueabi/3.4.4/../../../../arm-none-linux-gnueabi/lib/crtn.o  -Wl,-soname -Wl,libcln.so.4 
-o
.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

The thread on the CLN mailing list starts here (only 4 posts long): 
http://www.ginac.de/pipermail/cln-list/2007-February/000267.html

I tried the suggestions for various compiler flags and to compile as a 
static library, but when the static library is linked it too produces 
multiple definition errors.

Any thoughts?

Thanks,


Simon

P.S. I can provide a set of debian build files (.dsc, .diff, etc.) if 
anyone wants to try it for themselves.