gingerbread issue with undefined reference for ld
Recently I tried to add a new dynamic library (.so file) in the gingerbread source. The library seems to be properly copied to the respective folder, also there was no compilation error.
But at the end moment in linking, the build failed saying.
target SharedLib: libcameraservice (out/target/product/sholes/obj/SHARED_LIBRARIES/lib*_intermediates/LINKED/
y.so)
prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../lib/gcc/arm-eabi/4.4.3/../../../../arm-eabi/bin/ld: out/target/product/sholes/obj/SHARED_LIBRARIES/lib*_intermediates/z.o: in function w.cpp:109: error: undefined reference to
We can easily know that the symbols are not found in the respective linked library, but hey wait a second, we said the library is properly copied and it’s in LINKED library path. What is the problem?
The difficult the question, but the simple was the answer. The library I was linking was a c .so file, but where I was linking it was a cpp .so file. Umm .. extern “C” { } saved me 
