构建覆盆子pi的Qt库时出错

Question

我正在尝试为我的RPI编译Qt 5库,但它总是崩溃.

这些是我试图遵循的指南:

http://qt-project.org/wiki/RaspberryPi_Beginners_guide
http://qt-project.org/wiki/RaspberryPi

我已根据指南下载了交叉编译器和sysroot-image,并从git repo中提取了Qt5源代码.

在按照其中一个指南后,我现在被困住了make.

这是我收到的错误:

.obj/release-shared/qlibrary_unix.o: In function `QLibraryPrivate::load_sys()':
qlibrary_unix.cpp:(.text+0xf84): warning: Using 'dlopen' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
/home/esa/qtonpi/rpi_image/usr/lib/arm-linux-gnueabihf/libdl.a(dlopen.o): In function `dlopen':
(.text+0xc): undefined reference to `__dlopen'
/home/esa/qtonpi/rpi_image/usr/lib/arm-linux-gnueabihf/libdl.a(dlclose.o): In function `dlclose':
(.text+0x0): undefined reference to `__dlclose'
/home/esa/qtonpi/rpi_image/usr/lib/arm-linux-gnueabihf/libdl.a(dlsym.o): In function `dlsym':
(.text+0xc): undefined reference to `__dlsym'
/home/esa/qtonpi/rpi_image/usr/lib/arm-linux-gnueabihf/libdl.a(dlerror.o): In function `dlerror':
(.text+0x0): undefined reference to `__dlerror'
/home/esa/qtonpi/rpi_image/usr/lib/arm-linux-gnueabihf/libm.a(feholdexcpt.o): In function `feholdexcept':
(.text+0x48): undefined reference to `_dl_hwcap'
/home/esa/qtonpi/rpi_image/usr/lib/arm-linux-gnueabihf/libm.a(fesetenv.o): In function `fesetenv':
(.text+0x64): undefined reference to `_dl_hwcap'
collect2: virhe: ld:n paluuarvo oli 1                                           # collect2: error: ld returnvalue was 1
make[2]: *** [../../lib/libQt5Core.so.5.0.0] Virhe 1                            # Error 1
make[2]: Poistutaan hakemistosta "/home/esa/qtonpi/qt5/qtbase/src/corelib"      # Leaving directory
make[1]: *** [sub-corelib-make_first] Virhe 2                                   # Error 2
make[1]: Poistutaan hakemistosta "/home/esa/qtonpi/qt5/qtbase/src"              # Leaving directory
make: *** [sub-src-make_first] Virhe 2                                          # Error 2

Answer 1

修复sysroot中库的路径.有些库是绝对路径的符号链接,在放入系统时会被破坏.检查/home/esa/qtonpi/rpi_image/usr/lib/arm-linux-gnueabihf/libdl.so或类似内容.你应该看到那些破坏的符号链接到绝对路径.修复所有这些.在您报告的文档中,提供了用于此目的的脚本.你有没有运行它(https://gitorious.org/cross-compile-tools/cross-compile-tools/blobs/master/fixQualifiedLibraryPaths)？

还尝试检查这个,如果你仍然遇到的烦恼:我写了一些笔记编译从git的一个最新版本的喘息图像.