libgdal.so Android的错误：无法加载库＆QUOT; libgdal.so.1＆QUOT; [英] libgdal.so android error: could not load library "libgdal.so.1"

问题描述

我的问题是这样的：使用Android工具链（CC = i686的-Linux的Andr​​oid平台的GCC，CXX = i686的-Linux的Andr​​oid平台的C ++），产生以下输出库libgdal我已成功建立GDAL 1.10.1。一，libgdal.la，libgdal.lai，libgdal.so，libgdal.so.1，libgdal.so.1.17.1在输出文件夹的.libs（在下面我会打电话给这个文件夹$ GDAL_LIB_PATH）。

my problem is the following: I have succesfully built GDAL 1.10.1 using an Android toolchain (CC=i686-linux-android-gcc, CXX=i686-linux-android-c++) that produces the following output libraries libgdal.a, libgdal.la, libgdal.lai, libgdal.so, libgdal.so.1, libgdal.so.1.17.1 in the output folder .libs (in the following I'll call this folder $GDAL_LIB_PATH).

我想建立在Windows上使用Qt 5.4一个简单的Andr​​oid应用程序（用QPushButton名为TestAndroid一个简单的Widget应用）。如果我不使用GDAL一切工作正常，我能够在Android模拟器上运行我的应用程序的所有可用平台：X86，armeabi和armeabi-V7

I am trying to build a simple Android app (a simple widget application with a QPushButton named TestAndroid) using Qt 5.4 on Windows. If I don't use GDAL everything works fine and I am able to run my app on an Android emulator for all available platforms: x86, armeabi and armeabi-v7.

不过，如果我尝试使用GDAL（前只需在应用程序的初始化调用GDALAllRegister（）），然后连接使用下列错误libgdal.so应用程序崩溃：

Nonetheless, if I try to use GDAL (ex. by simply calling GDALAllRegister() in the initialization of the app) and then linking to libgdal.so the application crashes with the following error:

E /艺术（1614）：执行dlopen（/数据/应用/ org.qtproject.example.TestAndroid-1 / lib目录/ 86 / libTestAndroid.so，RTLD_LAZY）失败：执行dlopen失败：无法加载库libgdal .so.1需要通过libTestAndroid.so造成库libgdal.so.1找不到

E/art ( 1614): dlopen("/data/app/org.qtproject.example.TestAndroid-1/lib/x86/libTestAndroid.so", RTLD_LAZY) failed: dlopen failed: could not load library "libgdal.so.1" needed by "libTestAndroid.so"; caused by library "libgdal.so.1" not found

我已经验证了Android平台是正确的（86），否则连接器将跳过错误的libgdal.so对象。

I have verified that the Android platform is the right one (x86), otherwise the linker would skip the wrong libgdal.so object.

我一直在使用ANDROID_EXTRA_LIBS * = $ GDAL_LIB_PATH / libgdal.so libgdal.so在* .apk文件（由Qt的生成）包括在内。其他文件（libgdal.so.x.x）不能列入，因为Qt的prevents用同样的方式。

I have included libgdal.so in the *.apk (generated by Qt) using ANDROID_EXTRA_LIBS *= $GDAL_LIB_PATH/libgdal.so. The other files (libgdal.so.x.x) cannot be included in the same way since Qt prevents it.

为了避免动态链接我也试图以我的应用程序li​​bgdal.a但很多链接时出现错误（例如未定义引用'ATOF）链接

In order to avoid dynamic linking I have also tried to link my app with libgdal.a but many link-time errors appears (ex. undefined reference to 'atof')

我有搜索在网络上，但我还没有找到一个解决我的问题。

I have searched on the web but I have not found a solution to my problem.

我不受限使用动态链接的话，对任何的以下问题的解决方案是为我好：

I am not constrained to use dynamic linking so, a solution to any of the following problems is good for me:

1. 有没有办法避免的libgdal.so.x.x文件的创建时建立GDAL？

1. is there a way to avoid the creation of libgdal.so.x.x files when building GDAL?

有没有办法，包括在使用Qt生成的* ​​.apk文件libgdal.so.x.x文件？

is there a way to include libgdal.so.x.x files in the *.apk file generated by Qt?

我如何避免链接时错误链接的静态库libgdal.a什么时候？

how can I avoid link-time errors when linking the static library libgdal.a?

先谢谢您的任何答复！

推荐答案

在试验和错误（主要错误）几天我已经找到了解决我的问题。

After several days of trials and errors (mainly errors) I have found a solution to my problem.

我写它作为一个回答我的问题，以便它可能会有所帮助其他的人。

I'm writing it as an answer to my question so that it may be helpful to other ones.

问题是在GDAL的链路时间。简而言之：链接与链接到它（libgdal.so.1和libgdal.so）

The problem was during the link-time of GDAL. Briefly: the linker created the "real name" shared library libgdal.so.1.17.1 together with the links to it (libgdal.so.1 and libgdal.so).

有关强制链接某些原因（我忽略），以libgdal.so，为libgdal.so.1（这反过来，wuold搜索的libgdal.so.1.17.1）。链接器的搜索

For some reasons (which I ignore) forcing the link to libgdal.so, the linker searches for libgdal.so.1 (which, in turn, wuold have searched for libgdal.so.1.17.1).

这解决了我的问题，可以通过以下步骤总结解决方法：

The workaround that solved my problem can be summarized in the following steps:

1. 在GDAL根，根据需要的配置运行的./configure（见 http://trac.osgeo.org/gdal/wiki/BuildingForAndroid ）检查的libtool是启用

1. In the GDAL root, run the ./configure according to the desired configuration (see http://trac.osgeo.org/gdal/wiki/BuildingForAndroid) checking that libtool is ENABLED

编辑创建的libtool文件，如下所示（如用gedit克）：

edit the created libtool file (e. g. with gedit) as follows:

• 替换值 library_names_spec 是 library_names_spec =\\ $ LIBNAME \\ $ {} shared_ext


• 替换值 soname_spec 是 soname_spec =

• replace the value of library_names_spec with library_names_spec="\$libname\${shared_ext}"
• replace the value of soname_spec with soname_spec=""

输入make

在输出文件夹中的.libs /只libgdal.so将被创建，现在链接libgdal.so似乎很好地工作。

In the output folder .libs/ the only libgdal.so will be created and now the link to libgdal.so seems to work fine.

这篇关于libgdal.so Android的错误：无法加载库＆QUOT; libgdal.so.1＆QUOT;的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！