[Ns-bugs] [Bug 1075] New: Python examples fail when static built is enabled

[code@nsnam.ece.gatech.edu]

http://www.nsnam.org/bugzilla/show_bug.cgi?id=1075

           Summary: Python examples fail when static built is enabled
           Product: ns-3
           Version: pre-release
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: major
          Priority: P5
         Component: build system
        AssignedTo: gjcarneiro at gmail.com
        ReportedBy: watrous at u.washington.edu
                CC: ns-bugs at isi.edu
   Estimated Hours: 0.0


If you do build the non-static (shared dynamic) version of ns-3, all of the
tests in test.py pass.

But, if you do

    /waf configure --enable-static

or

    /waf configure --enable-static -d release

all of the Python examples fail:

    FAIL: Example examples/routing/simple-routing-ping6.py
    FAIL: Example examples/wireless/wifi-ap.py
    FAIL: Example examples/wireless/mixed-wireless.py
    FAIL: Example examples/tutorial/first.py
    FAIL: Example src/bridge/examples/csma-bridge.py

I think the reason is that I changed the wscript files to make the bindings be
a static library. Before, they were always being created as shared libraries.

To be specific, I added to following to bindings/python/wscript:

        if bld.env['ENABLE_STATIC_NS3']:
            features = 'cxx cstaticlib pyext'
        else:
            features = 'cxx cshlib pyext'
        if env['ENABLE_PYTHON_PCH']:
            features += ' pch'

I also added following to wscript:

    if env['ENABLE_STATIC_NS3']:
        if sys.platform == 'darwin':
            env.STATICLIB_MARKER = '-Wl,-all_load'
        else:
            env.STATICLIB_MARKER = '-Wl,--whole-archive,-Bstatic'
            env.SHLIB_MARKER = '-Wl,-Bdynamic,--no-whole-archive'

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