Re: swarm problem

[glen e. p. ropella]

> I have installed the pre-requise softwares:
> - gcc.2.7.2
> - gdb
> - GNU make
> - libXpm
> - tcl7.4
> - tk4.0
> - blt
> - libtobjc
> 
> When I try to compile one of the four sample I have these problem:
> 
> </home/cuvelier/Swarm/heatbugs>trinidad<cuvelier>: make all
> gcc -L../swarm/lib -L/usr/openwin/lib -L/opt/softs/gnu/lib -g  -o heatbugs 
> Heatbug.o HeatSpace.o main.o HeatbugModelSwarm.o HeatbugObserverSwarm.o 
> HeatbugBatchSwarm.o -lspace -lanalysis -lsimtools -ltkobjc -lactivity 
> -lrandom -lswarmobject -lcollections -ldefobj -ltk -ltcl -lBLT -ltclobjc 
> -lXpm -lX11 -lobjc -lm  
> Undefined                     first referenced
>  symbol                           in file
> Tk_DoOneEvent                       ../swarm/lib/libsimtools.a(ControlPanel.o)
> tk_NumMainWindows                   /opt/softs/gnu/lib/libtclobjc.a(Tk.o)
> Tk_CreateMainWindow                 /opt/softs/gnu/lib/libtclobjc.a(Tk.o)
> tcl_RcFileName                      /opt/softs/gnu/lib/libtclobjc.a(Tcl.o)
> Tk_DeleteFileHandler                /opt/softs/gnu/lib/libtclobjc.a(Tk.o)
> Tk_CreateFileHandler                /opt/softs/gnu/lib/libtclobjc.a(Tk.o)
> ld: fatal: Symbol referencing errors. No output written to heatbugs
> make: *** [heatbugs] Error 1

Bruno,
This looks similar to the problems one has when the Tcl/Tk
versions are mixed up on your machine.  For instance,
Tk_DoOneEvent is defined as a macro in tk.h and should not
be referenced at all in any .a file that included it when 
compiled.

I suspect that you have two tk.h files on your system, one
is for one version of Tk and one is for another.  As long as
the Tcl/Tk versions have been installed cleanly, libtclobjc
should use the TCL_MAJOR_VERSION/TK_MAJOR_VERSION/TCL_MINOR_VERSION/
TK_MINOR_VERSION macros to declare tcl_RcFileName or tcl_rcFileName
in the appropriate way.  But, if you installed a new version but
for some reason those macros aren't set properly, you could get
the above type of errors.

I suggest looking for two tk.h files on your system.  Clues for
where to look are in the -I and -L flags on the gcc command line
or % find /usr -name tk.h -print

glen