Prelink Error: prelink-cross: simple hello world example

Question

我正在尝试 cross-prelink a simple hello world program. I use the cross-compile toolchain arm-2012.03-57-arm-none-linux-gnueabi-i686-pc-linux-gnu and I am not sure if I have used the prelink-cross options correclty. I'll be glad if someone could point me to the right direction. More details about the source code on github。谢谢你。

项目目录树

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

main.cpp

#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

正在编译

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'

Answer 1

我想你必须使用：
此处 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您：

Could not parse /usr/local/sbin//prelink-rtld: error while loading shared libraries: ld-linux.so.3

如果前 2 个注释没有帮助，您可以尝试：

find/download ld-linux.so.3
设置export LD_LIBRARY_PATH=$PATH_TO_LD_LINUX_SO_3:$LD_LIBRARY_PATH
或使用 --ld-library-path= 选项添加它，因为它已经为其他库完成

它将向您的环境添加自定义搜索路径。

Answer 2

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。

目录结构现在看起来像这样：

|- 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，确保检查两个分支 'master' 和 'shared-library'：https://github.com/fnbk/prelink-cross-example

Prelink Error: prelink-cross: simple hello world example

Prelink Error: prelink-cross: simple hello world example

c++

compilation

arm

cross-compiling

prelink