[Ns-bugs] [Bug 1253] relocation R_X86_64_PC32 against undefined symbol

[code@nsnam.ece.gatech.edu]

https://www.nsnam.org/bugzilla/show_bug.cgi?id=1253

--- Comment #12 from John Abraham <jabraham3 at mail.gatech.edu> 2011-08-29 16:17:17 EDT ---
(In reply to comment #10)
> 1) The main point of static builds is to _not_ use fpic so, if you use it, you
> are basically silently ignoring the configure-time option. Not good. So, what
> is needed if this really does not work is to output a configure-time warning
> saying that the static build+python bindings are not compatible and disable one
> of the two automatically to proceed
> 
> 2) Anyway, erm, the build command looks really weird:
> '/usr/bin/g++', 'optimized/src/point-to-point-layout/bindings/ns3module_4.o',
> '-o',
> '/home/john/ns-3.12-rc2/ns-allinone-3.12-RC2/ns-3.12/build/optimized/bindings/python/ns/point_to_point_layout.so',
> '-Wl,--whole-archive,-Bstatic', '-lns3-core', '-lns3-network',
> '-lns3-config-store', '-lns3-internet', '-lns3-propagation',
> '-lns3-point-to-point', '-lns3-csma', '-lns3-emu', '-lns3-bridge',
> '-lns3-tap-bridge', '-lns3-virtual-net-device', '-lns3-applications',
> '-lns3-nix-vector-routing', '-lns3-olsr', '-lns3-aodv', '-lns3-dsdv',
> '-lns3-mobility', '-lns3-wifi', '-lns3-netanim', '-lns3-stats', '-lns3-uan',
> '-lns3-spectrum', '-lns3-mesh', '-lns3-test', '-lns3-ns3tcp', '-lns3-ns3wifi',
> '-lns3-flow-monitor', '-lns3-wimax', '-lns3-lte', '-lns3-mpi',
> '-lns3-topology-read', '-lns3-energy', '-lns3-tools', '-lns3-visualizer',
> '-lns3-point-to-point-layout', '-lns3-csma-layout', '-lns3-template',
> '-Wl,-Bdynamic,--no-whole-archive', '-shared', '-Wl,-Bsymbolic-functions',
> '-pthread', '-pthread', '-Loptimized', '-L/usr/lib',
> '-L/usr/lib/x86_64-linux-gnu', '-Wl,--whole-archive,-Bstatic',
> '-Wl,-Bdynamic,--no-whole-archive', '-lm', '-lpthread', '-ldl', '-lutil',
> '-lpython2.7', '-lsqlite3', '-lxml2', '-lgtk-x11-2.0', '-lgdk-x11-2.0',
> '-latk-1.0', '-lgio-2.0', '-lpangoft2-1.0', '-lpangocairo-1.0',
> '-lgdk_pixbuf-2.0', '-lcairo', '-lpango-1.0', '-lfreetype', '-lfontconfig',
> '-lgobject-2.0', '-lgmodule-2.0', '-lgthread-2.0', '-lrt', '-lglib-2.0',
> '-lgsl', '-lgslcblas']
> 
> This is building an executable that has a .so as extension ? wtf ? Can you try
> to run this command by hand and add a -shared option to it right after g++ ? 
> 
> What you want here is a shared library that will be dynamically loaded later
> but that was not built with -fPIC. So, the link line needs a -shared.



I tried this

/usr/bin/g++ -shared
./build/optimized/src/point-to-point-layout/bindings/ns3module_4.o  -o 
/home/john/ns-3.12-rc2/ns-allinone-3.12-RC2/ns-3.12/build/optimized/bindings/python/ns/point_to_point_layout.so
 -Wl --whole-archive -Bstatic   -L
/home/john/ns-3.12-rc2/ns-allinone-3.12-RC2/ns-3.12/build/optimized -lns3-core 
-lns3-network  -lns3-config-store  -lns3-internet  -lns3-propagation 
-lns3-point-to-point  -lns3-csma  -lns3-emu  -lns3-bridge  -lns3-tap-bridge 
-lns3-virtual-net-device  -lns3-applications  -lns3-nix-vector-routing 
-lns3-olsr  -lns3-aodv  -lns3-dsdv  -lns3-mobility  -lns3-wifi  -lns3-netanim 
-lns3-stats  -lns3-uan  -lns3-spectrum  -lns3-mesh  -lns3-test  -lns3-ns3tcp 
-lns3-ns3wifi  -lns3-flow-monitor  -lns3-wimax  -lns3-lte  -lns3-mpi 
-lns3-topology-read  -lns3-energy  -lns3-tools  -lns3-visualizer 
-lns3-point-to-point-layout  -lns3-csma-layout  -lns3-template  -Wl -Bdynamic
--no-whole-archive  -shared  -Wl -Bsymbolic-functions  -pthread  -pthread 
-Loptimized  -L/usr/lib  -L/usr/lib/x86_64-linux-gnu  -Wl --whole-archive
-Bstatic  -Wl -Bdynamic --no-whole-archive  -lm  -lpthread  -ldl  -lutil 
-lpython2.7  -lsqlite3  -lxml2  -lgtk-x11-2.0  -lgdk-x11-2.0  -latk-1.0 
-lgio-2.0  -lpangoft2-1.0  -lpangocairo-1.0  -lgdk_pixbuf-2.0  -lcairo 
-lpango-1.0  -lfreetype  -lfontconfig  -lgobject-2.0  -lgmodule-2.0 
-lgthread-2.0  -lrt  -lglib-2.0
john at john-VirtualBox:~/ns-3.12-rc2/ns-allinone-3.12-RC2/ns-3.12$ 
john at john-VirtualBox:~/ns-3.12-rc2/ns-allinone-3.12-RC2/ns-3.12$ 
john at john-VirtualBox:~/ns-3.12-rc2/ns-allinone-3.12-RC2/ns-3.12$ ls -l
build/optimized/bindings/python/ns/
total 21632
-rw-r--r-- 1 john john      518 2011-08-27 16:36 core.py
-rw-r--r-- 1 john john        1 2011-08-27 16:36 __init__.py
-rwxr-xr-x 1 john john 22141379 2011-08-29 16:10 point_to_point_layout.so
john at john-VirtualBox:~/ns-3.12-rc2/ns-allinone-3.12-RC2/ns-3.12$ 


I'm following this, the problem is with the "--enable-static" option, wouldn't
"-shared" be similar to adding fPIC again?

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