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我正在尝试交叉预链接一个简单的 hello world 程序。我使用交叉编译工具链arm-2012.03-57-arm-none-linux-gnueabi-i686-pc-linux-gnu，我不确定我是否使用了 prelink-cross 选项正确。如果有人能指出我正确的方向，我会很高兴。有关github上的源代码的更多详细信息。谢谢你。

项目目录树

|-arm-2012.03/
  |...
|-src/
  |-main.cpp
|-bin/
  |-hello
|-prelink_arm.conf

主文件

#include <stdio.h>
int main (int argc, char *argv[])
{
    fprintf(stdout, "hello world\n");
    return 0;
}

prelink_arm.conf

-l arm-2012.03/arm-none-linux-gnueabi/libc/lib 
-h arm-2012.03/arm-none-linux-gnueabi/libc/lib 
-l arm-2012.03/arm-none-linux-gnueabi/libc/usr/lib
-h arm-2012.03/arm-none-linux-gnueabi/libc/usr/lib

编译

arm-2012.03/bin/arm-none-linux-gnueabi-gcc -Wall -o bin_arm/hello src/main.cpp

预链接

PATH=/usr/local/sbin prelink --verbose --cache-file=cache/prelink_arm.cache --config-file=prelink_arm.conf --ld-library-path="arm-2012.03/arm-none-linux-gnueabi/libc/lib;arm-2012.03/arm-none-linux-gnueabi/libc/usr/lib;" -h bin_arm/hello

错误信息

prelink: arm-2012.03/arm-none-linux-gnueabi/libc/usr/lib/bin/getent: Could not parse `/usr/local/sbin//prelink-rtld: error while loading shared libraries: ld-linux.so.3'
prelink: arm-2012.03/arm-none-linux-gnueabi/libc/usr/lib/bin/POSIX_V6_ILP32_OFFBIG: Could not parse `/usr/local/sbin//prelink-rtld: error while loading shared libraries: ld-linux.so.3'
prelink: arm-2012.03/arm-none-linux-gnueabi/libc/usr/lib/bin/iconv: Could not parse `/usr/local/sbin//prelink-rtld: error while loading shared libraries: ld-linux.so.3'
prelink: arm-2012.03/arm-none-linux-gnueabi/libc/usr/lib/bin/sprof: Could not parse `/usr/local/sbin//prelink-rtld: error while loading shared libraries: ld-linux.so.3'
prelink: arm-2012.03/arm-none-linux-gnueabi/libc/usr/lib/bin/iconvconfig: Could not parse `/usr/local/sbin//prelink-rtld: error while loading shared libraries: ld-linux.so.3'
prelink: arm-2012.03/arm-none-linux-gnueabi/libc/usr/lib/bin/POSIX_V7_ILP32_OFF32: Could not parse `/usr/local/sbin//prelink-rtld: error while loading shared libraries: ld-linux.so.3'
prelink: arm-2012.03/arm-none-linux-gnueabi/libc/usr/lib/bin/zdump: Could not parse `/usr/local/sbin//prelink-rtld: error while loading shared libraries: ld-linux.so.3'
prelink: arm-2012.03/arm-none-linux-gnueabi/libc/usr/lib/bin/pcprofiledump: Could not parse `/usr/local/sbin//prelink-rtld: error while loading shared libraries: ld-linux.so.3'
prelink: arm-2012.03/arm-none-linux-gnueabi/libc/usr/lib/bin/gencat: Could not parse `/usr/local/sbin//prelink-rtld: error while loading shared libraries: ld-linux.so.3'
prelink: arm-2012.03/arm-none-linux-gnueabi/libc/usr/lib/bin/gdbserver: Could not parse `/usr/local/sbin//prelink-rtld: error while loading shared libraries: ld-linux.so.3'
prelink: arm-2012.03/arm-none-linux-gnueabi/libc/usr/lib/bin/pldd: Could not parse `/usr/local/sbin//prelink-rtld: error while loading shared libraries: ld-linux.so.3'
prelink: arm-2012.03/arm-none-linux-gnueabi/libc/usr/lib/bin/locale: Could not parse `/usr/local/sbin//prelink-rtld: error while loading shared libraries: ld-linux.so.3'
prelink: arm-2012.03/arm-none-linux-gnueabi/libc/usr/lib/bin/localedef: Could not parse `/usr/local/sbin//prelink-rtld: error while loading shared libraries: ld-linux.so.3'
prelink: arm-2012.03/arm-none-linux-gnueabi/libc/usr/lib/bin/XBS5_ILP32_OFFBIG: Could not parse `/usr/local/sbin//prelink-rtld: error while loading shared libraries: ld-linux.so.3'
prelink: arm-2012.03/arm-none-linux-gnueabi/libc/usr/lib/bin/zic: Could not parse `/usr/local/sbin//prelink-rtld: error while loading shared libraries: ld-linux.so.3'
prelink: arm-2012.03/arm-none-linux-gnueabi/libc/usr/lib/bin/POSIX_V7_ILP32_OFFBIG: Could not parse `/usr/local/sbin//prelink-rtld: error while loading shared libraries: ld-linux.so.3'
prelink: arm-2012.03/arm-none-linux-gnueabi/libc/usr/lib/bin/rpcgen: Could not parse `/usr/local/sbin//prelink-rtld: error while loading shared libraries: ld-linux.so.3'
prelink: arm-2012.03/arm-none-linux-gnueabi/libc/usr/lib/bin/makedb: Could not parse `/usr/local/sbin//prelink-rtld: error while loading shared libraries: ld-linux.so.3'
prelink: arm-2012.03/arm-none-linux-gnueabi/libc/usr/lib/bin/getconf: Could not parse `/usr/local/sbin//prelink-rtld: error while loading shared libraries: ld-linux.so.3'
prelink: arm-2012.03/arm-none-linux-gnueabi/libc/usr/lib/bin/XBS5_ILP32_OFF32: Could not parse `/usr/local/sbin//prelink-rtld: error while loading shared libraries: ld-linux.so.3'
prelink: arm-2012.03/arm-none-linux-gnueabi/libc/usr/lib/bin/POSIX_V6_ILP32_OFF32: Could not parse `/usr/local/sbin//prelink-rtld: error while loading shared libraries: ld-linux.so.3'
prelink: bin_arm/hello: Could not parse `/usr/local/sbin//prelink-rtld: error while loading shared libraries: ld-linux.so.3'

如果我将可执行文件所依赖的所有库提取到一个单独的文件夹中并相应地设置链接，那么我仍然会收到以下错误：

prelink: bin_arm/hello: Could not parse `/usr/local/sbin//prelink-rtld: error while loading shared libraries: ld-linux.so.3'
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2 回答 2

1

是的，我找到了解决方案：

我必须指定sysroot并明确告诉 prelink 要预编译哪些库。

目录结构现在如下所示：

|- arm-2012.03/arm-none-linux-gnueabi/libc/usr/local/bin/hello
  \- /arm-none-linux-gnueabi
    \- libc
      \- lib
        \- libc-2.15.so
        |- libgcc_s.so.1
        |- ld-2.15.so
        |- ...
      |- usr
        \- local
          \- bin
            \- hello
      |- etc
        \- prelink.conf
|- Makefile

prelink.conf

-l /libc/lib
-h /libc/lib

这是预链接命令：

PATH=/usr/local/sbin prelink --verbose --root=arm-2012.03/arm-none-linux-gnueabi/libc/ --cache-file=/etc/cache/prelink.cache --config-file=/etc/prelink.conf --ld-library-path="/lib;" -h /usr/local/bin/hello /lib/libc-2.15.so /lib/libgcc_s.so.1 /lib/ld-2.15.so

源代码可以在 github 上找到，请务必检查两个分支“master”和“shared-library”：https ://github.com/fnbk/prelink-cross-example

于 2015-06-17T13:54:37.893 回答
0

我想你必须使用：
lib 文件夹的完整路径：

prelink_arm.conf

-l arm-2012.03/arm-none-linux-gnueabi/libc/lib     
-h arm-2012.03/arm-none-linux-gnueabi/libc/lib     
-l arm-2012.03/arm-none-linux-gnueabi/libc/usr/lib  
-h arm-2012.03/arm-none-linux-gnueabi/libc/usr/lib

在这里 + 添加 $PATH 到 PATH 变量：
预链接 

PATH=/usr/local/sbin:$PATH prelink --verbose  \
--cache-file=cache/prelink_arm.cache --config-file=prelink_arm.conf \
--ld-library-path="arm-2012.03/arm-none-linux-gnueabi/libc/lib;arm-2012.03/arm-none-linux-gnueabi/libc/usr/lib;" \
-h bin_arm/hello

实际上所有这些错误都指向你：

无法解析/usr/local/sbin//prelink-rtld：加载共享库时出错：ld-linux.so.3

如果前 2 个注释没有帮助，您可以尝试：

  • 查找/下载ld-linux.so.3
  • 放export LD_LIBRARY_PATH=$PATH_TO_LD_LINUX_SO_3:$LD_LIBRARY_PATH
  • 或使用选项添加它 --ld-library-path=，就像它已经为其他库所做的那样

它将向您的环境添加自定义搜索路径。

于 2015-06-17T05:56:41.853 回答