./build/key.o:key.cpp:(.text+0x919): undefined reference to `secp256k1_ecdsa_recoverable_signature_serialize_compact'
./build/key.o:key.cpp:(.text+0x98a): undefined reference to `secp256k1_ecdsa_recoverable_signature_serialize_compact'
e:/mingw32/bin/../lib/gcc/i686-w64-mingw32/4.9.2/../../../../i686-w64-mingw32/bi
n/ld.exe: ./build/key.o: bad reloc address 0x1c in section `.text$_ZN21LockedPag
eManagerBaseI16MemoryPageLockerE11UnlockRangeEPvj[__ZN21LockedPageManagerBaseI16MemoryPageLockerE11UnlockRangeEPvj]'
collect2.exe: error: ld returned 1 exit status
make: *** [release/transfer-qt.exe] Error 1
any ideas or pointers?