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使用Android NDK同时编译libxml2和libiconv库

首先做好准备工作按照如下创建好目录并准备好libiconv和libxml2的压缩文件 （我这里使用的版本为：libiconv-1.14.tar.gz libxml2-git-snapshot.tar.gz【libxml2-2.8.0】） 创建目录如下 buildlibxml2(root)  jni->Android.mk (root-child)  jni->main.c (root-child)  libiconv (root-child)   libxml2  (root-child) Android.mk文件如下： LOCAL_PATH:= $(call my-dir) include $(CLEAR_VARS) LOCAL_MODULE := main LOCAL_SRC_FILES := main.c LOCAL_C_INCLUDES := \ $(LOCAL_PATH)/libxml2/include \ $(LOCAL_PATH)/libxml2/include/libxml \ $(LOCAL_PATH)/libiconv/include \ $(LOCAL_PATH)/libiconv \ $(LOCAL_PATH)/libiconv/libcharset \ $(LOCAL_PATH)/libiconv/lib \ $(LOCAL_PATH)/libiconv/libcharset/include LOCAL_SHARED_LIBRARIES := libiconv libxml2 include $(BUILD_EXECUTABLE) include $(call all-makefiles-under,$(LOCAL_PATH)) main.c 文件如下 #include <stdio.h> #include <stdlib.h> #include "libxml2/include/libxml/parser.h" #include "libxml2/include/libxml/tree.h"

int main (int argc, char **argv)

{   xmlDocPtr pdoc = NULL;   xmlNodePtr proot_node = NULL,pnode = NULL,pnode1 = NULL;     pdoc = xmlNewDoc (BAD_CAST "1.0");   proot_node = xmlNewNode (NULL, BAD_CAST "root node");   xmlNewProp (proot_node, BAD_CAST "version", BAD_CAST "1.0");   xmlDocSetRootElement (pdoc, proot_node);     pnode = xmlNewNode (NULL, BAD_CAST "child node 1");   xmlNewChild (pnode, NULL, BAD_CAST "child child node 1", BAD_CAST "info");   xmlAddChild (proot_node, pnode);     pnode1 = xmlNewNode (NULL, BAD_CAST "child child node 1");   xmlAddChild (pnode, pnode1);   xmlAddChild (pnode1,xmlNewText (BAD_CAST "this will lower node, child child child node 1"));     xmlNewTextChild (proot_node, NULL, BAD_CAST "child node 2", BAD_CAST "child node 2 info");   xmlNewTextChild (proot_node, NULL, BAD_CAST "child node 3", BAD_CAST "child node info 3");     xmlSaveFormatFileEnc (argc > 1 ? argv[1]:"-", pdoc, "UTF-8", 1);     xmlFreeDoc (pdoc);   xmlCleanupParser ();   xmlMemoryDump ();   return 0; }   将libiconv库和libxml2用tar xvvzf 命令解压 进入终端 进入libiconv目录 ./configure --build=x86_64-pc-linux-gnu --host=arm-linux-eabi 进入libxml2目录 ./configure (用上面的命令卡到某个步骤因此用这个) 在libiconv和libxml2文件夹里面添加Android.mk文件文件分别为 libiconv Android.mk: LOCAL_PATH:= $(call my-dir) #libiconv.so include $(CLEAR_VARS) LOCAL_MODULE := libiconv LOCAL_CFLAGS := \   -Wno-multichar \   -DANDROID \   -DLIBDIR="c" \   -DBUILDING_LIBICONV \   -DIN_LIBRARY LOCAL_SRC_FILES := \  libcharset/lib/localcharset.c \  lib/iconv.c \  lib/relocatable.c LOCAL_C_INCLUDES += \   $(LOCAL_PATH)/include \   $(LOCAL_PATH)/libcharset \   $(LOCAL_PATH)/lib \   $(LOCAL_PATH)/libcharset/include \   $(LOCAL_PATH)/srclib   include $(BUILD_SHARED_LIBRARY) libxml2 Android.mk: LOCAL_PATH:= $(call my-dir) include $(CLEAR_VARS) LOCAL_SRC_FILES := \ c14n.c catalog.c chvalid.c debugXML.c dict.c DOCBparser.c \ encoding.c entities.c error.c globals.c hash.c HTMLparser.c \ HTMLtree.c legacy.c list.c nanoftp.c nanohttp.c parser.c \ parserInternals.c pattern.c relaxng.c SAX.c SAX2.c \ threads.c tree.c trionan.c triostr.c uri.c valid.c\ xinclude.c xlink.c xmlIO.c xmlmemory.c xmlmodule.c \ xmlreader.c xmlregexp.c xmlsave.c xmlschemas.c xmlschemastypes.c xmlstring.c \ xmlunicode.c xmlwriter.c xpath.c xpointer.c LOCAL_C_INCLUDES := \ $(LOCAL_PATH)/include \ $(LOCAL_PATH)/include/libxml \ $(LOCAL_PATH)/../libiconv/include \ $(LOCAL_PATH)/../libiconv \ $(LOCAL_PATH)/../libiconv/libcharset \ $(LOCAL_PATH)/../libiconv/lib \ $(LOCAL_PATH)/../libiconv/libcharset/include LOCAL_MODULE:=libxml2 LOCAL_SHARED_LIBRARIES :=libiconv include $(BUILD_SHARED_LIBRARY) 打开终端进入buildlibxml2目录 进行ndk-build 报错 langinfo.h No such file or directiory 查找原因查看文件 \buildlibxml2\jni\libiconv\libcharset\lib\localcharset.c # if HAVE_LANGINFO_CODESET #  include <langinfo.h> # else #  if 0 /* see comment below */ #   include <locale.h> #  endif # endif 解决方法将\buildlibxml2\jni\libiconv\libcharset\config.h里面 将HAVE_LANGINFO_CODESET定义改成 0 #define HAVE_LANGINFO_CODESET 0 报错 'c'undeclared identitfier 查找原因查看文件 \buildlibxml2\jni\libiconv\libcharset\lib\localcharset.c 搜索int c 将int c的定义移到get_charset_aliases函数的开头

报错 ansidecl.h  No such file or directiory

查找原因查看文件\buildlibxml2\jni\libxml2\include\libxml\xmlversion.h #ifdef HAVE_ANSIDECL_H #include <ansidecl.h> #endif 解决方法打开文件\buildlibxml2\jni\libxml2\config.h 将define HAVE_ANSIDECL_H注释 //#define HAVE_ANSIDECL_H 1 报各类的如gzdopen gzopen 未定义的问题 将\buildlibxml2\jni\libxml2\config.h HAVE_LIBZ 和HAVE_ZLIB_H //#define HAVE_LIBZ 1 //#define HAVE_ZLIB_H 1 注释 报错 rand_r未定义 查找原因查看文件\buildlibxml2\jni\libxml2\dict.c #ifdef HAVE_RAND_R     rand_seed = time(NULL);     rand_r(& rand_seed); #else     srand(time(NULL)); #endif #ifdef HAVE_RAND_R     ret = rand_r(& rand_seed); #else     ret = rand(); #endif 解决方法打开文件\buildlibxml2\jni\libxml2\config.h 将HAVE_RAND_R 定义注释 //#define HAVE_RAND_R 1

重新ndk-build完成成功编译

编译这2个库我只遇到以上的一些问题。还是很幸运。编译好了！准备去用一下看可以用不痛苦的是我编译的可执行文件用cygwin在不能直接用- -#哎！悲哀 直接是说cannot execute binary file 然后我就在linux下用也是一样。。。不能执行二进制文件 然后我push到android模拟器上看能不能用./main运行..悲催permission denied 没有权限 你叫我情何以堪....是不是要root模拟器.... 试了一下一个命令 adb remount adb shell mount -o remount,rw -t yaffs2 /dev/block/mtdblock3 /system cd /system/bin cat sh > su chmod 4755 su su 发现不行 算了 还是好好的改JNI连接测试了。 哈哈哈！！ 主activity： package build.libxml2; import android.app.Activity; import android.os.Bundle; import android.util.Log; import android.widget.TextView; public class testActivity extends Activity {     /** Called when the activity is first created. */     @Override     public void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         //setContentView(R.layout.main);                 TextView tv=new TextView(this);         tv.setText("开始程序运行了！");         Log.v("1", "程序开始了！");         setContentView(tv);         tv.setText("开始运行xmltest()了！");         Log.v("1", "开始运行xmltest()了");         natives.xmltest();     } } natives.class package build.libxml2; import android.util.Log; public class natives {   static   {    Log.v("loadlibrary","start load iconv");    System.loadLibrary("iconv");    Log.v("loadlibrary","succse load iconv");    Log.v("loadlibrary","start load xml2");    System.loadLibrary("xml2");    Log.v("loadlibrary","succse load xml2");    Log.v("loadlibrary","start load main");     System.loadLibrary("main");    Log.v("loadlibrary","succse load main");    }     public static native void xmltest(); } 将main.c文件修改 #include <stdio.h> #include <stdlib.h> #include "libxml2/include/libxml/parser.h" #include "libxml2/include/libxml/tree.h" #include <jni.h> #include <android/log.h> JNIEXPORT void JNICALL Java_build_libxml2_natives_xmltest   (JNIEnv *env, jclass jc) {  int i;  __android_log_print(ANDROID_LOG_INFO,"FILE_OPT","run to testmain");  i=testmain();  __android_log_print(ANDROID_LOG_INFO,"FILE_OPT","fun return %d",i); } //int main (int argc, char **argv) int testmain() {   char *szDocName="/mnt/sdcard/yy.xml";  FILE *fp;  fp=fopen(szDocName,"a+");  if(fp == NULL)  {   fclose(fp);   return 0;  }    __android_log_print(ANDROID_LOG_INFO,"FILE_OPT","file create");   xmlDocPtr pdoc = NULL;   xmlNodePtr proot_node = NULL,pnode = NULL,pnode1 = NULL;     pdoc = xmlNewDoc (BAD_CAST "1.0");   proot_node = xmlNewNode (NULL, BAD_CAST "root node");   xmlNewProp (proot_node, BAD_CAST "version", BAD_CAST "1.0");   xmlDocSetRootElement (pdoc, proot_node);     pnode = xmlNewNode (NULL, BAD_CAST "child node 1");   xmlNewChild (pnode, NULL, BAD_CAST "child child node 1", BAD_CAST "info");   xmlAddChild (proot_node, pnode);     pnode1 = xmlNewNode (NULL, BAD_CAST "child child node 1");   xmlAddChild (pnode, pnode1);   xmlAddChild (pnode1,xmlNewText (BAD_CAST "this will lower node, child child child node 1"));     xmlNewTextChild (proot_node, NULL, BAD_CAST "child node 2", BAD_CAST "child node 2 info");   xmlNewTextChild (proot_node, NULL, BAD_CAST "child node 3", BAD_CAST "child node info 3");   //xmlSaveFormatFileEnc (argc > 1 ? argv[1]:"-", pdoc, "UTF-8", 1);   xmlSaveFormatFileEnc(szDocName,pdoc, "UTF-8", 1);   xmlFreeDoc (pdoc);   xmlCleanupParser ();   xmlMemoryDump ();   return 0; }

将\buildlibxml2\jni\Android.mk文件修改

LOCAL_PATH:= $(call my-dir) include $(CLEAR_VARS) LOCAL_MODULE := main LOCAL_SRC_FILES := main.c LOCAL_C_INCLUDES := \ $(LOCAL_PATH)/libxml2/include \ $(LOCAL_PATH)/libxml2/include/libxml \ $(LOCAL_PATH)/libiconv/include \ $(LOCAL_PATH)/libiconv \ $(LOCAL_PATH)/libiconv/libcharset \ $(LOCAL_PATH)/libiconv/lib \ $(LOCAL_PATH)/libiconv/libcharset/include LOCAL_SHARED_LIBRARIES := libiconv libxml2 LOCAL_LDLIBS := -llog include $(BUILD_SHARED_LIBRARY) include $(call all-makefiles-under,$(LOCAL_PATH))

进入终端进入目录buildlibxml2 ndk-build

成功生成 在AndroidManifest.xml添加文件访问权限 运行程序。 用adb pull 命令 将/mnt/sdcard/yy.xml拷出来  用notepad查看 <?xml version="1.0" encoding="UTF-8"?> <root node version="1.0">   <child node 1>     <child child node 1>info</child child node 1>     <child child node 1>this will lower node, child child child node 1</child child node 1>   </child node 1>   <child node 2>child node 2 info</child node 2>   <child node 3>child node info 3</child node 3> </root node> 测试的例子是在网上广为流传的借用然后改写了。具体链接记不起了！ 移植这个库参考了一些其他的博客知识但大多是自己撰写和整编。 成功！！！！测试成功至此libxml2和libiconv成功移植到android

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