> I have two sets of issues. One seems to be linker related:
>
> E/art ( 8857): dlopen("/data/app/com.app/lib/arm/libcryptopp-and.so",
> RTLD_LAZY) failed: dlopen failed: library "libstlport_shared.so" not found
>
> So I add:
>
> ANDROID_EXTRA_LIBS +=
/Users/jhihn/Downloads/android-ndk-r10e/sources/cxx-stl/
> stlport/libs/armeabi-v7a/libstlport_shared.so
>
This is always a point of frustration (for me)... How to get the libraries
copied properly and in the right place in the lib/ folder. Under NDK-build,
you use LOCAL_MODULE and LOCAL_SHARED_LIBRARIES. One ensures you
compile/link against a library like stlport_shared, the other ensures
stlport_shared is included in the libs/ directory.
Also see this Android.mk:
http://github.com/noloader/Android-PRNG/blob/master/jni/Android.mk. It
produces a prng.so called by Java, and it uses stlport_shared.so and
cryptopp.so.
I’m not sure how Qt does things.
*****
Also note that getting the dlopen flags correct can be challenging. I use
the following code (when needed) code because something that works on one
platform does not work on another (from
http://cryptopp.com/wiki/Linux#Note_for_Shared_Object_Callers):
void* cryptlib = NULL;
cryptlib = dlopen("libcryptopp.so", RTLD_GLOBAL);
if(!cryptlib)
cryptlib = dlopen("libcryptopp.so", RTLD_GLOBAL | RTLD_LAZY);
if(!cryptlib)
cryptlib = dlopen("libcrypto++.so", RTLD_GLOBAL);
if(!cryptlib)
cryptlib = dlopen("libcrypto++.so", RTLD_GLOBAL | RTLD_LAZY);
if(!cryptlib)
throw runtime_error("Failed to load crypto++ shared object");
...
dlclose(cryptlib);
Jeff
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