Question

我已成功完成install/build instructions for OpenBR on linux

我的目标是在Android上构建并运行OpenBR。

经过大量的修补，我终于成功为armv7构建了OpenBR。我的问题是，当我做＆＃34; System.loadLibrary（＆＃34; openbr＆＃34;）＆＃34;我收到错误：

11-25 23:40:31.221: E/dalvikvm(29742): dlopen("/data/app-lib/com.test.app-28/libopenbr.so") failed: dlopen failed: could not load library "/home/ubuntu/qt5.1.1/android_armv7/lib/libQt5Concurrent.so.5.1.1" needed by "libopenbr.so"; caused by library "/home/ubuntu/qt5.1.1/android_armv7/lib/libQt5Concurrent.so.5.1.1" not found

我相信我已经正确地包含了armv7 libQt5Concurrent库（在android.mk中加载为本地模块），但我认为问题是libopenbr在加载时看错了目录（如错误信息中所示）。它试图查看编译机器上的路径。

在libopenbr.so上运行readelf会产生这样的结果：

 0x00000001 (NEEDED)                     Shared library: [/home/ubuntu/qt5.1.1/android_armv7/lib/libQt5Concurrent.so.5.1.1]
 0x00000001 (NEEDED)                     Shared library: [/home/ubuntu/qt5.1.1/android_armv7/lib/libQt5Core.so.5.1.1]
 0x00000001 (NEEDED)                     Shared library: [/home/ubuntu/qt5.1.1/android_armv7/lib/libQt5Gui.so.5.1.1]
 0x00000001 (NEEDED)                     Shared library: [/home/ubuntu/qt5.1.1/android_armv7/lib/libQt5Network.so.5.1.1]
 0x00000001 (NEEDED)                     Shared library: [/home/ubuntu/qt5.1.1/android_armv7/lib/libQt5Sql.so.5.1.1]
 0x00000001 (NEEDED)                     Shared library: [/home/ubuntu/qt5.1.1/android_armv7/lib/libQt5Widgets.so.5.1.1]
 0x00000001 (NEEDED)                     Shared library: [/home/ubuntu/qt5.1.1/android_armv7/lib/libQt5Xml.so.5.1.1]
 0x00000001 (NEEDED)                     Shared library: [libz.so]
 0x00000001 (NEEDED)                     Shared library: [libdl.so]
 0x00000001 (NEEDED)                     Shared library: [libm.so]
 0x00000001 (NEEDED)                     Shared library: [liblog.so]
 0x00000001 (NEEDED)                     Shared library: [libc.so]

如何获取它，以便在编译时不使用此路径搜索Qt库？

我尝试过各种cmake指令，包括openbr CMakeLists.txt中这些变量的各种排列：

SET(CMAKE_SKIP_RPATH TRUE)

# use, i.e. don't skip the full RPATH for the build tree
SET(CMAKE_SKIP_BUILD_RPATH  TRUE)

# when building, don't use the install RPATH already
# (but later on when installing)
SET(CMAKE_BUILD_WITH_INSTALL_RPATH FALSE)

# the RPATH to be used when installing
SET(CMAKE_INSTALL_RPATH "")

# don't add the automatically determined parts of the RPATH
# which point to directories outside the build tree to the install RPATH
SET(CMAKE_INSTALL_RPATH_USE_LINK_PATH FALSE)

任何帮助从我的构建库的共享库路径中获取此路径都会很棒！谢谢！

Answer 1

我实际上终于想出了如何解决这个问题，方法是更新每个qt lib的cmake文件，使其不包含文件名末尾的版本字符串！

Answer 2

使用System.loadLibrary（）加载动态库时，需要先打开所有依赖项，因为System.loadLibrary（）不会为您加载它们。

所以你可能需要这样做：的System.loadLibrary（ “libQt5Concurrent”）的System.loadLibrary（ “openbr”）

如果libQt5Concurrent有其他依赖，你必须以同样的方式加载它们。

编译OpenBR到ArmV7 - Android工具链问题

2 个答案: