Compiled it under gentoo but a I have a linkage error

[gbin]

I made an ebuild here : https://github.com/gbin/gbin-overlay/tree/master/dev-python/gopy

It seems to compile correctly but when I try to run the example from python I have :

gbin@sal ~/projects/testpygo » gopy test.go                                
gbin@sal ~/projects/testpygo » ipython                                     
Python 2.7.3 (default, Mar 20 2013, 11:58:44) 
Type "copyright", "credits" or "license" for more information.

IPython 0.13.1 -- An enhanced Interactive Python.
?         -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help      -> Python's own help system.
object?   -> Details about 'object', use 'object??' for extra details.

In [1]: import simple
---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-1-6de4b98437d9> in <module>()
----> 1 import simple

ImportError: /usr/lib/gccgo/libgopy.ext.so: undefined symbol: libgo_runtime.runtime.LockOSThread

If I look at the .so, indeed something is fishy, did I miss something at the link step ?

gbin@sal ~/projects/testpygo » ldd -r /usr/lib/gccgo/libgopy.ext.so
        linux-vdso.so.1 (0x00007fff9c3fd000)
        libgo.so.0 => /usr/lib/gcc/x86_64-pc-linux-gnu/4.7.2/libgo.so.0 (0x00007ffe65fa1000)
        libc.so.6 => /lib64/libc.so.6 (0x00007ffe65bf6000)
        /lib64/ld-linux-x86-64.so.2 (0x00007ffe68ed0000)
        libpthread.so.0 => /lib64/libpthread.so.0 (0x00007ffe659d9000)
        libm.so.6 => /lib64/libm.so.6 (0x00007ffe656e3000)
        libgcc_s.so.1 => /usr/lib/gcc/x86_64-pc-linux-gnu/4.7.2/libgcc_s.so.1 (0x00007ffe654cd000)
undefined symbol: cgocallback   (/usr/lib/gccgo/libgopy.ext.so)
undefined symbol: go.py..import (/usr/lib/gccgo/libgopy.ext.so)
undefined symbol: libgo_runtime.runtime.LockOSThread    (/usr/lib/gccgo/libgopy.ext.so)
undefined symbol: simple_cgocallback    (/usr/lib/gccgo/libgopy.ext.so)
undefined symbol: simple_cgocall        (/usr/lib/gccgo/libgopy.ext.so)

[qur]

It looks like libgo_runtime.runtime.LockOSThread has been removed or renamed in gcc 4.7.2?

[qur]

Definitely had to fix a bunch of symbol names to get things working with 4.7.3, so this should be fixed now.

[gbin]

I confirm it fixed it. The ebuild to be able to build it from the correct branch is here : https://github.com/gbin/gbin-overlay/tree/master/dev-python/gopy

Thanks a lot !