Question

当我使用ndk-build工具编译单个c ++源文件时，我得到了很多未定义的引用错误。为了记录，我在linux主机系统上使用NDK r6。

首先，我一整天都在反对这个问题，所以如果我要留下一些东西或者解释自己有点快，我很抱歉。请向我询问任何其他信息。

我的源代码有很多我想要静态链接到的依赖库。我在Android.mk文件中定义了所有不同的依赖库，如下所示：

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)

虽然我确保使用我的Android.mk和Application.mk文件在我的jni /文件夹中以lib.a的形式提供这些文件。（和我的源文件）此外，我通过将APP_STL := stlport_static添加到我的Application.mk文件中添加了STL支持。我的单个源文件（riidr-jni.cpp）目前是：

#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 );
}

如果我取消注释dp::platformInit( dp::PI_DEFAULT );行并将其替换为std::string test = "asd";我根本没有错误，这使我相信STL lib被正确导入和链接。

我的Android.mk文件的最后一条指令是

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)

运行ndk-build工具时出现的错误如下：

/home/creen/Projects/Riidr/workspace/RiidrEbookReader/obj/local/armeabi/libxml.a(xpath_context.o）：在函数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 to std :: _ Rb_tree_increment（std :: _ Rb_tree_node_base *）' /home/creen/Projects/Riidr/workspace/RiidrEbookReader/obj/local/armeabi/libxml.a(xpath_context.o）：在函数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 to std :: _ Rb_tree_rebalance_for_erase（std :: _ Rb_tree_node_base *，std :: _ Rb_tree_node_base＆amp; ;）” /home/creen/Projects/Riidr/workspace/RiidrEbookReader/obj/local/armeabi/libxml.a(xpath_context.o）：在函数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 to std :: _ Rb_tree_insert_and_rebalance（bool，std :: _ Rb_tree_node_base *，std：：_Rb_tree_node_base *，std :: _ Rb_tree_node_base＆amp;）' /home/creen/Projects/Riidr/workspace/RiidrEbookReader/obj/local/armeabi/libxml.a(xpath_context.o）：在函数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 to std :: _ Rb_tree_decrement（std :: _ Rb_tree_node_base const *）' /home/creen/Projects/Riidr/workspace/RiidrEbookReader/obj/local/armeabi/libxml.a(xpath_context.o）：在函数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 to std :: _ Rb_tree_increment（std :: _ Rb_tree_node_base const *）'中 /home/creen/Projects/Riidr/workspace/RiidrEbookReader/obj/local/armeabi/libxml.a(xpath_context.o）：在函数__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 to std :: __ throw_bad_alloc（）'中 /home/creen/Projects/Riidr/workspace/RiidrEbookReader/obj/local/armeabi/libxml.a(xpath_context.o）：在函数__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 to std :: __ throw_bad_alloc（）'中 /home/creen/Projects/Riidr/workspace/RiidrEbookReader/obj/local/armeabi/libxml.a(xpath_context.o）：在函数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 to std :: _ Rb_tree_decrement（std :: _ Rb_tree_node_base *）' /home/creen/Projects/Riidr/workspace/RiidrEbookReader/obj/local/armeabi/libxml.a(xpath_context.o）：在函数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 to std :: __ throw_length_error（char const *）' /home/creen/Projects/Riidr/workspace/RiidrEbookReader/obj/local/armeabi/libxml.a(xpath_context.o）：在函数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 to std :: __ throw_length_error（char const *）' /home/creen/Projects/Riidr/workspace/RiidrEbookReader/obj/local/armeabi/libxml.a(xpath_context.o）：在函数__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 to std :: __ throw_bad_alloc（）'中 /home/creen/Projects/Riidr/workspace/RiidrEbookReader/obj/local/armeabi/libxml.a(xpath_yacc.o）：在函数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 to std :: _ List_node_base :: hook（std :: _ List_node_base *）' /home/creen/Projects/Riidr/workspace/RiidrEbookReader/obj/local/armeabi/libxml.a(xpath_yacc.o）：在函数__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 to std :: __ throw_bad_alloc（）'中 collect2：ld返回1退出状态 make： * [/home/creen/Projects/Riidr/workspace/RiidrEbookReader/obj/local/armeabi/libriidr-jni.so]错误1

任何信息，问题或任何事情都非常受到高度赞赏。

Answer 1

添加行

LOCAL_ALLOW_UNDEFINED_SYMBOLS := true

到Android.mk文件，它应该工作。正如在ndk doc中所解释的那样，这是因为ndk执行调试检查，即使是为了避免运行时链接错误，并且对于某些动机，它在预构建的库中找不到正确的引用。希望它可以提供帮助。

Answer 2

您必须将APP_STL := stlport_static添加到Application.mk文件，而不是Android.mk。

编辑：据我所知，您没有链接到stlport静态库。所以我认为你应该将-lstlport添加到LOCAL_LDLIBS。

Answer 3

正如其他人所说，

LOCAL_ALLOW_UNDEFINED_SYMBOLS：= true

在运行时不起作用。看看这个：

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

我遇到了与boost相同的问题（我使用自定义的1.42版本）。

使用强力方法配置gnustdc ++解决了我的问题。重要的是在库之后链接-lgnustl_static（或者你使用的任何stl lib）。

Answer 4

问题是默认情况下会启用某些功能，而它们可能需要一些额外的链接到其他库，这些功能是： - 支持通过modplug加载MOD音乐。 - 支持通过mikmod加载MOD音乐 - 支持通过SMPEG加载MP3音乐你应该禁用这些选项来构建sdl2_mixer，所以转到＆＃34; Android.mk＆＃34; （SDL2_mixer）文件，你会发现：

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

将这些更改为＆＃34; false＆＃34;它会像我一样对你有用！

注意：

 LOCAL_ALLOW_UNDEFINED_SYMBOLS := true

1-会导致运行时错误，因为该符号在运行时仍无法解析

2-你无法加载mp3文件，但你可以将它们转换为＆＃34; ogg＆＃34;几乎相同的尺寸和质量，但你可以在这里找到你的确切问题的完美解决方案Runtime linking error with SDL_Mixer and SMPEG2 on Android

Answer 5

你看过＃16627的错误吗？

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

我正在运行ndk-r8，但我仍然遇到这些错误。

ndk-build：静态链接到libxml.a时对..错误的未定义引用

5 个答案: