我正在尝试在Ubuntu 12.04（32位）构建系统上为ARM主机交叉编译gstreamer。 i686-linux-gnu GCC没有描述我要描述的内容。我正在使用这个gcc编译Ubuntu 12.04：
> arm-linux-gnueabihf-gcc -v
Using built-in specs.
COLLECT_GCC=arm-linux-gnueabihf-gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/arm-linux-gnueabihf/4.6/lto-wrapper
Target: arm-linux-gnueabihf
Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro 4.6.3-1ubuntu5'
--with-bugurl=file:///usr/share/doc/gcc-4.6/README.Bugs
--enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.6
--enable-shared --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib
--without-included-gettext --enable-threads=posix
--with-gxx-include-dir=/usr/arm-linux-gnueabihf/include/c++/4.6.3 --libdir=/usr/lib
--enable-nls --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes
--enable-gnu-unique-object --enable-plugin --enable-objc-gc --enable-multilib
--disable-sjlj-exceptions --with-arch=armv7-a --with-float=hard --with-fpu=vfpv3-d16
--with-mode=thumb --disable-werror --enable-checking=release --build=i686-linux-gnu
--host=i686-linux-gnu --target=arm-linux-gnueabihf --program-prefix=arm-linux-gnueabihf-
--includedir=/usr/arm-linux-gnueabihf/include
--with-headers=/usr/arm-linux-gnueabihf/include
--with-libs=/usr/arm-linux-gnueabihf/lib
Thread model: posix
gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5)
这个ld：
arm-linux-gnueabihf-ld -v GNU ld（Ubuntu的GNU Binutils）2.22
GCC是从默认的Ubuntu 12.04 PPA安装的。当构建系统链接gst-discoverer-1.0可执行文件时，我收到以下错误：
/usr/lib/gcc/arm-linux-gnueabihf/4.6/../../../../arm-linux-gnueabihf/bin/ld: warning: liborc-0.4.so.0, needed by ../gst-libs/gst/video/.libs/libgstvideo-1.0.so, not found (try using -rpath or -rpath-link)
../gst-libs/gst/video/.libs/libgstvideo-1.0.so: undefined reference to `orc_program_compile'
../gst-libs/gst/video/.libs/libgstvideo-1.0.so: undefined reference to `orc_program_set_backup_function'
../gst-libs/gst/video/.libs/libgstvideo-1.0.so: undefined reference to `orc_program_new_from_static_bytecode'
../gst-libs/gst/video/.libs/libgstvideo-1.0.so: undefined reference to `orc_program_free'
../gst-libs/gst/video/.libs/libgstvideo-1.0.so: undefined reference to `orc_once_mutex_lock'
../gst-libs/gst/video/.libs/libgstvideo-1.0.so: undefined reference to `orc_program_take_code'
../gst-libs/gst/video/.libs/libgstvideo-1.0.so: undefined reference to `orc_once_mutex_unlock'
collect2: ld returned 1 exit status
gst-discoverer-1.0依赖于libgstvideo-1.0.so。 libgstvideo-1.0.so（在该过程的早期成功构建）依赖于liborc-0.4.so。使用arm-linux-gnueabihf-readelf -a检查libgstvideo-1.0.so会产生以下代码片段：
Dynamic section at offset 0x29ed8 contains 33 entries:
Tag Type Name/Value
0x00000001 (NEEDED) Shared library: [libgstbase-1.0.so.0]
0x00000001 (NEEDED) Shared library: [libgstreamer-1.0.so.0]
0x00000001 (NEEDED) Shared library: [libgobject-2.0.so.0]
0x00000001 (NEEDED) Shared library: [libglib-2.0.so.0]
0x00000001 (NEEDED) Shared library: [liborc-0.4.so.0]
0x00000001 (NEEDED) Shared library: [libgcc_s.so.1]
0x00000001 (NEEDED) Shared library: [libpthread.so.0]
0x00000001 (NEEDED) Shared library: [libc.so.6]
0x0000000e (SONAME) Library soname: [libgstvideo-1.0.so.0]
0x0000000f (RPATH) Library rpath: [/home/test/gst/gstreamer/gstreamer/libs/gst/base/.libs:/
home/test/gst/gstreamer/gstreamer/gst/.libs:/home/test/gst/gstreamer/orc/orc/.libs]
RPATH条目中liborc-0.4.so的路径是正确的。 gst-discoverer-1.0的链接行不包含对liborc的引用，因为它不直接依赖于它（仅通过libgstvideo-1.0.so间接依赖）。我尝试在我的LDFLAGS中添加“-rpath-link = / home / test / gst / gstreamer / orc / orc / .libs”，但它没有用。关于为什么交叉编译链接器无法找到此共享库的依赖关系的任何想法？
答案 0 :(得分：2)
似乎我在正确的轨道上，但我正在将-rpath-link传递给ld（在我的配置行上使用LDFLAGS）。由于gcc实际上正在进行链接，我需要像这样使用CFLAGS和-Wl参数：
./configure CFLAGS="-Wl,-rpath=/home/test/gst/gstreamer/orc/orc/libs"
According to some，交叉链接中可能存在错误。