ndk-build: undefined reference to .. errors when statically linking to libxml.a

I get a lot of undefined reference to ... errors when I compile my single c++ source-file using the ndk-build tool. For the record I use NDK r6 on a linux host system.

First of all I've been banging my head against this problem all day, so I am sorry if I am leaving something out or explaining myself a bit fast. Please ask me for any additional information.

My source-code has a lot of dependent libraries that I want to statically link to. I have defined all my dependent libs of different in my Android.mk file as follows:

include $(CLEAR_VARS)

LOCAL_MODULE    := <name>
LOCAL_SRC_FILES := lib<name>.a
LOCAL_EXPORT_C_INCLUDES := <header files related to this lib>

include $(PREBUILT_STATIC_LIBRARY)

While I make sure that these are available in my jni/ folder as lib.a with my Android.mk and Application.mk files. (and my source file) Also I've added STL support by adding APP_STL := stlport_static to my Application.mk file. My single source file (riidr-jni.cpp) is at the moment:

#include <string>
#include <jni.h>
#include <android/log.h>
#include "../com_riidr_apps_reader_RiidrEbookReaderActivity.h"
#include <dp_all.h>

void Java_com_riidr_apps_reader_RiidrEbookReaderActivity_init ( JNIEnv* env, jobject thiz ) {
    __android_log_write(ANDROID_LOG_INFO, "Riidr", "JNI init - start");
    dp::platformInit( dp::PI_DEFAULT );
}

If I uncomment the dp::platformInit( dp::PI_DEFAULT ); line and replace it with std::string test = "asd"; I have no errors at all, this makes me believe that the and therefore STL lib is correctly imported and linked.

The last instructions of my Android.mk file is this

include $(CLEAR_VARS)

LOCAL_MODULE    := riidr-jni
LOCAL_SRC_FILES := riidr-jni.cpp
LOCAL_LDLIBS := -llog -ldl -lz
LOCAL_STATIC_LIBRARIES :=  \
hobbes \
dp \
adept \
mschema \
hobbes \
t3 \
xml \
mschema \
dp \
adept \
xml \
cryptopenssl \
fonts \
png \
jpeg \
ssl \
crypto \
expat \
cts \
hyphen \
curl

include $(BUILD_SHARED_LIBRARY)

The error I get when running the ndk-build tool is the following:

/home/creen/Projects/Riidr/workspace/RiidrEbookReader/obj/local/armeabi/libxml.a(xpath_context.o): In function std::_Rb_tree_iterator<std::pair<uft::Value const, xpath::DynamicContext*> >::operator++()': xpath_context.cpp:(.text._ZNSt17_Rb_tree_iteratorISt4pairIKN3uft5ValueEPN5xpath14DynamicContextEEEppEv[std::_Rb_tree_iterator<std::pair<uft::Value const, xpath::DynamicContext*> >::operator++()]+0x1c): undefined reference tostd::_Rb_tree_increment(std::_Rb_tree_node_base*)' /home/creen/Projects/Riidr/workspace/RiidrEbookReader/obj/local/armeabi/libxml.a(xpath_context.o): In function std::_Rb_tree<uft::Value, std::pair<uft::Value const, xpath::DynamicContext*>, std::_Select1st<std::pair<uft::Value const, xpath::DynamicContext*> >, xpath::Context::ValueCompare, std::allocator<std::pair<uft::Value const, xpath::DynamicContext*> > >::erase(std::_Rb_tree_iterator<std::pair<uft::Value const, xpath::DynamicContext*> >)': xpath_context.cpp:(.text._ZNSt8_Rb_treeIN3uft5ValueESt4pairIKS1_PN5xpath14DynamicContextEESt10_Select1stIS7_ENS4_7Context12ValueCompareESaIS7_EE5eraseESt17_Rb_tree_iteratorIS7_E[std::_Rb_tree<uft::Value, std::pair<uft::Value const, xpath::DynamicContext*>, std::_Select1st<std::pair<uft::Value const, xpath::DynamicContext*> >, xpath::Context::ValueCompare, std::allocator<std::pair<uft::Value const, xpath::DynamicContext*> > >::erase(std::_Rb_tree_iterator<std::pair<uft::Value const, xpath::DynamicContext*> >)]+0x28): undefined reference tostd::_Rb_tree_rebalance_for_erase(std::_Rb_tree_node_base*, std::_Rb_tree_node_base&)' /home/creen/Projects/Riidr/workspace/RiidrEbookReader/obj/local/armeabi/libxml.a(xpath_context.o): In function std::_Rb_tree<uft::Value, std::pair<uft::Value const, xpath::DynamicContext*>, std::_Select1st<std::pair<uft::Value const, xpath::DynamicContext*> >, xpath::Context::ValueCompare, std::allocator<std::pair<uft::Value const, xpath::DynamicContext*> > >::_M_insert_(std::_Rb_tree_node_base const*, std::_Rb_tree_node_base const*, std::pair<uft::Value const, xpath::DynamicContext*> const&)': xpath_context.cpp:(.text._ZNSt8_Rb_treeIN3uft5ValueESt4pairIKS1_PN5xpath14DynamicContextEESt10_Select1stIS7_ENS4_7Context12ValueCompareESaIS7_EE10_M_insert_EPKSt18_Rb_tree_node_baseSG_RKS7_[std::_Rb_tree<uft::Value, std::pair<uft::Value const, xpath::DynamicContext*>, std::_Select1st<std::pair<uft::Value const, xpath::DynamicContext*> >, xpath::Context::ValueCompare, std::allocator<std::pair<uft::Value const, xpath::DynamicContext*> > >::_M_insert_(std::_Rb_tree_node_base const*, std::_Rb_tree_node_base const*, std::pair<uft::Value const, xpath::DynamicContext*> const&)]+0xc4): undefined reference tostd::_Rb_tree_insert_and_rebalance(bool, std::_Rb_tree_node_base*, std::_Rb_tree_node_base*, std::_Rb_tree_node_base&)' /home/creen/Projects/Riidr/workspace/RiidrEbookReader/obj/local/armeabi/libxml.a(xpath_context.o): In function std::_Rb_tree_const_iterator<std::pair<uft::Value const, xpath::DynamicContext*> >::operator--()': xpath_context.cpp:(.text._ZNSt23_Rb_tree_const_iteratorISt4pairIKN3uft5ValueEPN5xpath14DynamicContextEEEmmEv[std::_Rb_tree_const_iterator<std::pair<uft::Value const, xpath::DynamicContext*> >::operator--()]+0x1c): undefined reference tostd::_Rb_tree_decrement(std::_Rb_tree_node_base const*)' /home/creen/Projects/Riidr/workspace/RiidrEbookReader/obj/local/armeabi/libxml.a(xpath_context.o): In function std::_Rb_tree_const_iterator<std::pair<uft::Value const, xpath::DynamicContext*> >::operator++()': xpath_context.cpp:(.text._ZNSt23_Rb_tree_const_iteratorISt4pairIKN3uft5ValueEPN5xpath14DynamicContextEEEppEv[std::_Rb_tree_const_iterator<std::pair<uft::Value const, xpath::DynamicContext*> >::operator++()]+0x1c): undefined reference tostd::_Rb_tree_increment(std::_Rb_tree_node_base const*)' /home/creen/Projects/Riidr/workspace/RiidrEbookReader/obj/local/armeabi/libxml.a(xpath_context.o): In function __gnu_cxx::new_allocator<mdom::Node*>::allocate(unsigned int, void const*)': xpath_context.cpp:(.text._ZN9__gnu_cxx13new_allocatorIPN4mdom4NodeEE8allocateEjPKv[__gnu_cxx::new_allocator<mdom::Node*>::allocate(unsigned int, void const*)]+0x4c): undefined reference tostd::__throw_bad_alloc()' /home/creen/Projects/Riidr/workspace/RiidrEbookReader/obj/local/armeabi/libxml.a(xpath_context.o): In function __gnu_cxx::new_allocator<mdom::Node>::allocate(unsigned int, void const*)': xpath_context.cpp:(.text._ZN9__gnu_cxx13new_allocatorIN4mdom4NodeEE8allocateEjPKv[__gnu_cxx::new_allocator<mdom::Node>::allocate(unsigned int, void const*)]+0x4c): undefined reference tostd::__throw_bad_alloc()' /home/creen/Projects/Riidr/workspace/RiidrEbookReader/obj/local/armeabi/libxml.a(xpath_context.o): In function std::_Rb_tree_iterator<std::pair<uft::Value const, xpath::DynamicContext*> >::operator--()': xpath_context.cpp:(.text._ZNSt17_Rb_tree_iteratorISt4pairIKN3uft5ValueEPN5xpath14DynamicContextEEEmmEv[std::_Rb_tree_iterator<std::pair<uft::Value const, xpath::DynamicContext*> >::operator--()]+0x1c): undefined reference tostd::_Rb_tree_decrement(std::_Rb_tree_node_base*)' /home/creen/Projects/Riidr/workspace/RiidrEbookReader/obj/local/armeabi/libxml.a(xpath_context.o): In function std::deque<mdom::Node, std::allocator<mdom::Node> >::_M_new_elements_at_front(unsigned int)': xpath_context.cpp:(.text._ZNSt5dequeIN4mdom4NodeESaIS1_EE24_M_new_elements_at_frontEj[std::deque<mdom::Node, std::allocator<mdom::Node> >::_M_new_elements_at_front(unsigned int)]+0x58): undefined reference tostd::__throw_length_error(char const*)' /home/creen/Projects/Riidr/workspace/RiidrEbookReader/obj/local/armeabi/libxml.a(xpath_context.o): In function std::deque<mdom::Node, std::allocator<mdom::Node> >::_M_new_elements_at_back(unsigned int)': xpath_context.cpp:(.text._ZNSt5dequeIN4mdom4NodeESaIS1_EE23_M_new_elements_at_backEj[std::deque<mdom::Node, std::allocator<mdom::Node> >::_M_new_elements_at_back(unsigned int)]+0x58): undefined reference tostd::__throw_length_error(char const*)' /home/creen/Projects/Riidr/workspace/RiidrEbookReader/obj/local/armeabi/libxml.a(xpath_context.o): In function __gnu_cxx::new_allocator<std::_Rb_tree_node<std::pair<uft::Value const, xpath::DynamicContext*> > >::allocate(unsigned int, void const*)': xpath_context.cpp:(.text._ZN9__gnu_cxx13new_allocatorISt13_Rb_tree_nodeISt4pairIKN3uft5ValueEPN5xpath14DynamicContextEEEE8allocateEjPKv[__gnu_cxx::new_allocator<std::_Rb_tree_node<std::pair<uft::Value const, xpath::DynamicContext*> > >::allocate(unsigned int, void const*)]+0x4c): undefined reference tostd::__throw_bad_alloc()' /home/creen/Projects/Riidr/workspace/RiidrEbookReader/obj/local/armeabi/libxml.开发者_运维问答a(xpath_yacc.o): In function std::list<uft::Value*, std::allocator<uft::Value*> >::_M_insert(std::_List_iterator<uft::Value*>, uft::Value* const&)': xpath_yacc.cpp:(.text._ZNSt4listIPN3uft5ValueESaIS2_EE9_M_insertESt14_List_iteratorIS2_ERKS2_[std::list<uft::Value*, std::allocator<uft::Value*> >::_M_insert(std::_List_iterator<uft::Value*>, uft::Value* const&)]+0x3c): undefined reference tostd::_List_node_base::hook(std::_List_node_base*)' /home/creen/Projects/Riidr/workspace/RiidrEbookReader/obj/local/armeabi/libxml.a(xpath_yacc.o): In function __gnu_cxx::new_allocator<std::_List_node<uft::Value*> >::allocate(unsigned int, void const*)': xpath_yacc.cpp:(.text._ZN9__gnu_cxx13new_allocatorISt10_List_nodeIPN3uft5ValueEEE8allocateEjPKv[__gnu_cxx::new_allocator<std::_List_node<uft::Value*> >::allocate(unsigned int, void const*)]+0x4c): undefined reference tostd::__throw_bad_alloc()' collect2: ld returned 1 exit status make: * [/home/creen/Projects/Riidr/workspace/RiidrEbookReader/obj/local/armeabi/libriidr-jni.so] Error 1

Any info, questions or anything really is highly appreciated.

---

Add the line

LOCAL_ALLOW_UNDEFINED_SYMBOLS := true

to the Android.mk file and it should work. As explained in the ndk doc, it is because the ndk performs a debug checking even for avoiding runtime linking error and for some motivations it doesn't find the correct references in a pre-built library. Hope it coulds help.

---

You had to add APP_STL := stlport_static to the Application.mk file, not Android.mk.

EDIT: As far as I can see you haven't linked against stlport static library. So I think you should add something like -lstlport to LOCAL_LDLIBS.

---

As others had mentioned,

LOCAL_ALLOW_UNDEFINED_SYMBOLS := true

will not work at run time. Have a look at this:

https://github.com/MysticTreeGames/Boost-for-Android

I ran into the same problem with boost (I use a custom 1.42 version).

Using the brute force method to configure gnustdc++ fixed my issue. The important thing is to link against -lgnustl_static (or whatever stl lib you use) after your libraries.

---

The problem is that some functionalities are enabled by default while they may need some extra linking to other libraries , this functionalities are : - support loading MOD music via modplug . - support loading MOD music via mikmod - support loading MP3 music via SMPEG you should disable these options to build sdl2_mixer so go to "Android.mk" ( of SDL2_mixer) file and you will find :

SUPPORT_MOD_MODPLUG ?= true
...
SUPPORT_MOD_MIKMOD ?= true
...
SUPPORT_MP3_SMPEG ?= true

change those to "false" and it will work for you as did with me !

NOTES :

 LOCAL_ALLOW_UNDEFINED_SYMBOLS := true

1- will cause a runtime error , because the symbol will still not be resolved at runtime

2- You won't be able to load mp3 files but you can covert them to "ogg" with almost the same size and quality , but you can find the perfect solution of your exact problem here Runtime linking error with SDL_Mixer and SMPEG2 on Android

---

Do you looked at the bug #16627 ?

http://code.google.com/p/android/issues/detail?id=16627

I'm running ndk-r8, but I'm still having those errors though.