[From NS-User]

[From NS-User]

Hao,

ok, so to enable debug information in ns, you need to do the following:

in your ns-allinone directory, edit the install file. Look for the line :

# Build Tcl8.3.2  (should be around line 173)

In this section you need to add the option --enable-symbols to the line :
./configure --enable-gcc --disable-shared --prefix=$CUR_PATH || ....

so it becomes:
./configure --enable-gcc --enable-symbols --disable-shared --prefix=$CUR_PATH || ....

Now, still in the ns-allinone/install file, look for the tclcl section.

# Build tclcl  (should be around line 260)

in this section, you need to add --enable-debug to your configure line, such
that:

./configure ||  ...

becomes

./configure --enable-debug || ...

ok, we're done with this one. save and close.

now, go into your ns-allinone/ns directory, and open your Makefile.in. Search
for CFLAGS (should be around line 90), and change it from

CFLAGS  = $(CCOPT) $(DEFINE)

to

CFLAGS  = -g $(CCOPT) $(DEFINE)

ok, we're done with the editing. now go to your ns-allinone and type

 ./install. 

after everything is done, you should have debugging symbols enabled. so, now
you recompile your code into ns, and open ns in gdb (gdb ns) and set the
appropriate parameters to ns (e.g. your .tcl simulation file), and type run.
When the app crashes, type bt to see the stack. you should see plenty of debug
information now.

let me know how it goes.

gustavo
--

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