Problem with building E2 with libsigc++ 2.X

[ngc1927]

Restart from 0, compile with option 2 ..enigma2 ok, no enigma2_servicemp3 compiled itself.
If launch make enigma2_servicemp3 return common.h missed error.

Now start compilation in other directory with option 3.

[ngc1927]

Restart from 0, compile with option 3 ..enigma2 ok, all ok .. Thanks.