使用qtcreator加androidndk编译项目时报错：
error: qrc_qml.obj: requires unsupported dynamic reloc R_ARM_REL32; recompile with -fPIC
error: undefined reference to '__dso_handle'
解决方案，建一个头文件，代码如下，包含到项目里:
#define NS_EXPORT
extern "C" {
/*
* To work around http://code.google.com/p/android/issues/detail?id=23203
* we don't link with the crt objects. In some configurations, this means
* a lack of the __dso_handle symbol because it is defined there, and
* depending on the android platform and ndk versions used, it may or may
* not be defined in libc.so. In the latter case, we fail to link. Defining
* it here as weak makes us provide the symbol when it's not provided by
* the crt objects, making the change transparent for future NDKs that
* would fix the original problem. On older NDKs, it is not a problem
* either because the way __dso_handle was used was already broken (and
* the custom linker works around it).
*/
NS_EXPORT __attribute__((weak)) void *__dso_handle;
}