Problem with shared librairies and linking

[Antoine Duval]

Hi,
        Could anybody can help me on the following problem ?

// compilling and installing a first library named rtpi 
address@hidden rtpi]$ autoconf && automake && ./configure --prefix=/usr && 
make && make install 
// everything seems to be ok

// now a prog named mlb
address@hidden rtpi]$ cd ~/mlb
address@hidden mlb]$ autoconf && automake && ./configure --prefix=/usr
address@hidden mlb]$ make
[...]
g++ -o mlb [*.o] -laudio -lsmp -lMagick -lMagick++ -ltcl8.4 -lfreetype -lttf 
-lrtpi
/usr/lib/gcc-lib/i586-mandrake-linux-gnu/3.2.2/../../../librtpi.so: undefined 
reference to `TclTimerManager::Tcl_CreateTimerHandler(int, void (*)(void*), 
void*)'
/usr/lib/gcc-lib/i586-mandrake-linux-gnu/3.2.2/../../../librtpi.so: undefined 
reference to `TclTimerManager::Tcl_DeleteTimerHandler(long)'
collect2: ld returned 1 exit status
make: *** [mlb] Erreur 1
// there something wrong here 
// but i link with rtpi and rtpi has been previously linked with tcl8.4 which 
provied thoses functions.
address@hidden mlb]$ cd ~/rtpi
address@hidden rtpi]$ cat Makefile.am | grep LIBADD
librtpi_la_LIBADD = -ltcl8.4
address@hidden rtpi]$ ldd /usr/lib/librtpi.so
        libtcl8.4.so => /usr/lib/libtcl8.4.so (0x40067000)
        libstdc++.so.5 => /usr/lib/libstdc++.so.5 (0x40100000)
[...]
address@hidden rtpi]$ objdump -t /usr/lib/libtcl8.4.so | grep 
Tcl_CreateTimerHandler
0006fabe g     F .text  000000f2              Tcl_CreateTimerHandler


Any idea ?

Antoine