blocks|key|2777873|text|这有点像kluge，但这是我能找到的最好的解决方案，而且对于基本使用来说，它确实工作得很好-只需将此脚本保存为"arm-none-linux-gnueabi-ldd“和其他交叉工具即可。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2777874|#!/bin/sh
arm-none-linux-gnueabi-readelf+-a+$1+%7C+grep+"Shared+library:"|code-block|syntax|javascript|2777875|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

This is a bit of a kluge, but it's the best solution I could find, and it really works quite well for basic use - just save this script as "arm-none-linux-gnueabi-ldd" with your other cross tools.

<pre><code>#!/bin/sh
arm-none-linux-gnueabi-readelf -a $1 | grep "Shared library:"
</code></pre>

blocks|key|4567664|text|您还可以使用objdump和，以便只转储和搜索二进制文件的头部分。这可能会为您节省一些毫秒...|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4567665|#!/bin/sh++
arm-none-linux-gnueabi-objdump+-x+$1+%7C+grep+NEEDED|code-block|syntax|javascript|4567666|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You could also use objdump and in order to just dump and search the header fraction of the binary. This may save you some milliseconds...

<pre><code>#!/bin/sh 
arm-none-linux-gnueabi-objdump -x $1 | grep NEEDED
</code></pre>

blocks|key|875092|text|这是另一种选择，你可以将LD_TRACE_LOADED_OBJECTS环境变量设置为任何值，比如1，然后你只需运行可执行文件，输出应该是它的动态依赖项。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|875093|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Here is another option, you can set LD_TRACE_LOADED_OBJECTS environment variable to any value, say 1, and then you just run the executable, the output should be its dynamic dependencies.

blocks|key|2777976|text|我找到了这篇文章，希望它能帮助很多仍在寻找真正的ldd解决方案的人。ldd只是一个支持ld-linux库的脚本。那么为什么不制作自己的ldd脚本呢？首先，你需要在你的系统中找到ld-linux库，这个库应该是可用的。在我的例子中，它是/lib/ld-linux-armhf.so.3，所以我将它放入RTLDLIST中，正如您在下面的脚本中看到的那样。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2777977|并将此脚本放入您的设备或主板中，您可以使用ldd，它可以非常方便地查找可执行文件的依赖库。|2777978|祝好运!|2777979|#!+/bin/bash
#+Copyright+(C)+1996-2011,+2012+Free+Software+Foundation,+Inc.
#+This+file+is+part+of+the+GNU+C+Library.

#+The+GNU+C+Library+is+free+software;+you+can+redistribute+it+and/or
#+modify+it+under+the+terms+of+the+GNU+Lesser+General+Public
#+License+as+published+by+the+Free+Software+Foundation;+either
#+version+2.1+of+the+License,+or+(at+your+option)+any+later+version.

#+The+GNU+C+Library+is+distributed+in+the+hope+that+it+will+be+useful,
#+but+WITHOUT+ANY+WARRANTY;+without+even+the+implied+warranty+of
#+MERCHANTABILITY+or+FITNESS+FOR+A+PARTICULAR+PURPOSE.++See+the+GNU
#+Lesser+General+Public+License+for+more+details.

#+You+should+have+received+a+copy+of+the+GNU+Lesser+General+Public
#+License+along+with+the+GNU+C+Library;+if+not,+write+to+the+Free
#+Software+Foundation,+Inc.,+59+Temple+Place,+Suite+330,+Boston,+MA
#+02111-1307+USA.


#+This+is+the+`ldd'+command,+which+lists+what+shared+libraries+are
#+used+by+given+dynamically-linked+executables.++It+works+by+invoking+the
#+run-time+dynamic+linker+as+a+command+and+setting+the+environment
#+variable+LD_TRACE_LOADED_OBJECTS+to+a+non-empty+value.

#+We+should+be+able+to+find+the+translation+right+at+the+beginning.
TEXTDOMAIN=libc
TEXTDOMAINDIR=/usr/share/locale

RTLDLIST="/lib/ld-linux.so.2+/lib64/ld-linux-x86-64.so.2+/lib/ld-linux-armhf.so.3"
warn=
bind_now=
verbose=

while+test+$#+-gt+0;+do
++case+"$1"+in
++--vers+%7C+--versi+%7C+--versio+%7C+--version)
++++echo+'ldd+(Ubuntu+EGLIBC+2.15-0ubuntu10.3)+2.15'
++++printf+$"Copyright+(C)+%25s+Free+Software+Foundation,+Inc.
This+is+free+software;+see+the+source+for+copying+conditions.++There+is+NO
warranty;+not+even+for+MERCHANTABILITY+or+FITNESS+FOR+A+PARTICULAR+PURPOSE.
"+"2012"
++++printf+$"Written+by+%25s+and+%25s.
"+"Roland+McGrath"+"Ulrich+Drepper"
++++exit+0
++++;;
++--h+%7C+--he+%7C+--hel+%7C+--help)
++++printf+$"Usage:+ldd+[OPTION]...+FILE...
++++++--help++++++++++++++print+this+help+and+exit
++++++--version+++++++++++print+version+information+and+exit
++-d,+--data-relocs+++++++process+data+relocations
++-r,+--function-relocs+++process+data+and+function+relocations
++-u,+--unused++++++++++++print+unused+direct+dependencies
++-v,+--verbose+++++++++++print+all+information
"
++++printf+$"For+bug+reporting+instructions,+please+see:
%25s.
"+"<http://www.debian.org/Bugs/>"
++++exit+0
++++;;
++-d+%7C+--d+%7C+--da+%7C+--dat+%7C+--data+%7C+--data-+%7C+--data-r+%7C+--data-re+%7C+\
++--data-rel+%7C+--data-relo+%7C+--data-reloc+%7C+--data-relocs)
++++warn=yes
++++shift
++++;;
++-r+%7C+--f+%7C+--fu+%7C+--fun+%7C+--func+%7C+--funct+%7C+--functi+%7C+--functio+%7C+\
++--function+%7C+--function-+%7C+--function-r+%7C+--function-re+%7C+--function-rel+%7C+\
++--function-relo+%7C+--function-reloc+%7C+--function-relocs)
++++warn=yes
++++bind_now=yes
++++shift
++++;;
++-v+%7C+--verb+%7C+--verbo+%7C+--verbos+%7C+--verbose)
++++verbose=yes
++++shift
++++;;
++-u+%7C+--u+%7C+--un+%7C+--unu+%7C+--unus+%7C+--unuse+%7C+--unused)
++++unused=yes
++++shift
++++;;
++--v+%7C+--ve+%7C+--ver)
++++echo+>&2+$"ldd:+option+\`$1'+is+ambiguous"
++++exit+1
++++;;
++--)+++++++#+Stop+option+processing.
++++shift;+break
++++;;
++-*)
++++echo+>&2+'ldd:'+$"unrecognized+option"+"\`$1'"
++++echo+>&2+$"Try+\`ldd+--help'+for+more+information."
++++exit+1
++++;;
++*)
++++break
++++;;
++esac
done

nonelf+()
{
++#+Maybe+extra+code+for+non-ELF+binaries.
++return+1;
}

add_env="LD_TRACE_LOADED_OBJECTS=1+LD_WARN=$warn+LD_BIND_NOW=$bind_now"
add_env="$add_env+LD_LIBRARY_VERSION=\$verify_out"
add_env="$add_env+LD_VERBOSE=$verbose"
if+test+"$unused"+=+yes;+then
++add_env="$add_env+LD_DEBUG=\"$LD_DEBUG${LD_DEBUG:%2B,}unused\""
fi

#+The+following+use+of+cat+is+needed+to+make+ldd+work+in+SELinux
#+environments+where+the+executed+program+might+not+have+permissions
#+to+write+to+the+console/tty.++But+only+bash+3.x+supports+the+pipefail
#+option,+and+we+don't+bother+to+handle+the+case+for+older+bash+versions.
if+x=`set+-o`+&&+test+"$x"+!=+"${x#*pipefail}"+&&+set+-o+pipefail+;+then
++try_trace()+{
++++eval+$add_env+'"$@"'+%7C+cat
++}
else
++try_trace()+{
++++eval+$add_env+'"$@"'
++}
fi

case+$#+in
0)
++echo+>&2+'ldd:'+$"missing+file+arguments"
++echo+>&2+$"Try+\`ldd+--help'+for+more+information."
++exit+1
++;;
1)
++single_file=t
++;;
*)
++single_file=f
++;;
esac

result=0
for+file+do
++#+We+don't+list+the+file+name+when+there+is+only+one.
++test+$single_file+=+t+%7C%7C+echo+"${file}:"
++case+$file+in
++*/*)+:
+++++++;;
++*)+file=./$file
+++++;;
++esac
++if+test+!+-e+"$file";+then
++++echo+"ldd:+${file}:"+$"No+such+file+or+directory"+>&2
++++result=1
++elif+test+!+-f+"$file";+then
++++echo+"ldd:+${file}:"+$"not+regular+file"+>&2
++++result=1
++elif+test+-r+"$file";+then
++++RTLD=
++++ret=1
++++for+rtld+in+${RTLDLIST};+do
++++++if+test+-x+$rtld;+then
++++verify_out=`${rtld}+--verify+"$file"`
++++ret=$?
++++case+$ret+in
++++[02])+RTLD=${rtld};+break;;
++++esac
++++++fi
++++done
++++case+$ret+in
++++0%7C2)
++++++try_trace+"$RTLD"+"$file"+%7C%7C+result=1
++++++;;
++++1%7C126)
++++++#+This+can+be+a+non-ELF+binary+or+no+binary+at+all.
++++++nonelf+"$file"+%7C%7C+{
++++echo+$"+not+a+dynamic+executable"
++++result=1
++++++}
++++++;;
++++*)
++++++echo+'ldd:'+${RTLD}+$"exited+with+unknown+exit+code"+"($ret)"+>&2
++++++exit+1
++++++;;
++++esac
++else
++++echo+'ldd:'+$"error:+you+do+not+have+read+permission+for"+"\`$file'"+>&2
++++result=1
++fi
done

exit+$result
#+Local+Variables:
#++mode:ksh
#+End:|code-block|syntax|javascript|2777980|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|O|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|P|8|@]|9|@]|A|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

I found this and hope it can help a lot of people who are still searching for a true ldd solution. ldd is just a script with support of ld-linux library. So why not making your own ldd script? First you need to find ld-linux library in your system, which should be available. In my case it is /lib/ld-linux-armhf.so.3 so I put this into RTLDLIST as you can see in the script below.

And put this script in your device or board and you can have ldd which is very convenient to find dependents libraries for an executable.

Good luck!

<pre><code>#! /bin/bash
# Copyright (C) 1996-2011, 2012 Free Software Foundation, Inc.
# This file is part of the GNU C Library.

# The GNU C Library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.

# The GNU C Library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.

# You should have received a copy of the GNU Lesser General Public
# License along with the GNU C Library; if not, write to the Free
# Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
# 02111-1307 USA.


# This is the `ldd' command, which lists what shared libraries are
# used by given dynamically-linked executables. It works by invoking the
# run-time dynamic linker as a command and setting the environment
# variable LD_TRACE_LOADED_OBJECTS to a non-empty value.

# We should be able to find the translation right at the beginning.
TEXTDOMAIN=libc
TEXTDOMAINDIR=/usr/share/locale

RTLDLIST="/lib/ld-linux.so.2 /lib64/ld-linux-x86-64.so.2 /lib/ld-linux-armhf.so.3"
warn=
bind_now=
verbose=

while test $# -gt 0; do
 case "$1" in
 --vers | --versi | --versio | --version)
 echo 'ldd (Ubuntu EGLIBC 2.15-0ubuntu10.3) 2.15'
 printf $"Copyright (C) %s Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
" "2012"
 printf $"Written by %s and %s.
" "Roland McGrath" "Ulrich Drepper"
 exit 0
 ;;
 --h | --he | --hel | --help)
 printf $"Usage: ldd [OPTION]... FILE...
 --help print this help and exit
 --version print version information and exit
 -d, --data-relocs process data relocations
 -r, --function-relocs process data and function relocations
 -u, --unused print unused direct dependencies
 -v, --verbose print all information
"
 printf $"For bug reporting instructions, please see:
%s.
" "&lt;http://www.debian.org/Bugs/&gt;"
 exit 0
 ;;
 -d | --d | --da | --dat | --data | --data- | --data-r | --data-re | \
 --data-rel | --data-relo | --data-reloc | --data-relocs)
 warn=yes
 shift
 ;;
 -r | --f | --fu | --fun | --func | --funct | --functi | --functio | \
 --function | --function- | --function-r | --function-re | --function-rel | \
 --function-relo | --function-reloc | --function-relocs)
 warn=yes
 bind_now=yes
 shift
 ;;
 -v | --verb | --verbo | --verbos | --verbose)
 verbose=yes
 shift
 ;;
 -u | --u | --un | --unu | --unus | --unuse | --unused)
 unused=yes
 shift
 ;;
 --v | --ve | --ver)
 echo &gt;&amp;2 $"ldd: option \`$1' is ambiguous"
 exit 1
 ;;
 --) # Stop option processing.
 shift; break
 ;;
 -*)
 echo &gt;&amp;2 'ldd:' $"unrecognized option" "\`$1'"
 echo &gt;&amp;2 $"Try \`ldd --help' for more information."
 exit 1
 ;;
 *)
 break
 ;;
 esac
done

nonelf ()
{
 # Maybe extra code for non-ELF binaries.
 return 1;
}

add_env="LD_TRACE_LOADED_OBJECTS=1 LD_WARN=$warn LD_BIND_NOW=$bind_now"
add_env="$add_env LD_LIBRARY_VERSION=\$verify_out"
add_env="$add_env LD_VERBOSE=$verbose"
if test "$unused" = yes; then
 add_env="$add_env LD_DEBUG=\"$LD_DEBUG${LD_DEBUG:+,}unused\""
fi

# The following use of cat is needed to make ldd work in SELinux
# environments where the executed program might not have permissions
# to write to the console/tty. But only bash 3.x supports the pipefail
# option, and we don't bother to handle the case for older bash versions.
if x=`set -o` &amp;&amp; test "$x" != "${x#*pipefail}" &amp;&amp; set -o pipefail ; then
 try_trace() {
 eval $add_env '"$@"' | cat
 }
else
 try_trace() {
 eval $add_env '"$@"'
 }
fi

case $# in
0)
 echo &gt;&amp;2 'ldd:' $"missing file arguments"
 echo &gt;&amp;2 $"Try \`ldd --help' for more information."
 exit 1
 ;;
1)
 single_file=t
 ;;
*)
 single_file=f
 ;;
esac

result=0
for file do
 # We don't list the file name when there is only one.
 test $single_file = t || echo "${file}:"
 case $file in
 */*) :
 ;;
 *) file=./$file
 ;;
 esac
 if test ! -e "$file"; then
 echo "ldd: ${file}:" $"No such file or directory" &gt;&amp;2
 result=1
 elif test ! -f "$file"; then
 echo "ldd: ${file}:" $"not regular file" &gt;&amp;2
 result=1
 elif test -r "$file"; then
 RTLD=
 ret=1
 for rtld in ${RTLDLIST}; do
 if test -x $rtld; then
 verify_out=`${rtld} --verify "$file"`
 ret=$?
 case $ret in
 [02]) RTLD=${rtld}; break;;
 esac
 fi
 done
 case $ret in
 0|2)
 try_trace "$RTLD" "$file" || result=1
 ;;
 1|126)
 # This can be a non-ELF binary or no binary at all.
 nonelf "$file" || {
 echo $" not a dynamic executable"
 result=1
 }
 ;;
 *)
 echo 'ldd:' ${RTLD} $"exited with unknown exit code" "($ret)" &gt;&amp;2
 exit 1
 ;;
 esac
 else
 echo 'ldd:' $"error: you do not have read permission for" "\`$file'" &gt;&amp;2
 result=1
 fi
done

exit $result
# Local Variables:
# mode:ksh
# End:
</code></pre>

blocks|key|2777952|text|如前所述，由ldd+can+only+been+executed+on+target设计。但是，可以使用readelf模拟ldd行为。在crosstool-ng项目中开发了一个名为xldd的脚本。此处提供了此脚本的独立版本：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2777953|https://gist.github.com/jerome-pouiller/c403786c1394f53f44a3b61214489e6f|2777954|entityMap|0|LINK|mutability|MUTABLE|url|https://sourceware.org/ml/crossgcc/2008-09/msg00061.html|1^0|6|3|1G|7|1P|3|1W|C|2I|4|A|W|0|0|0|20|1|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]|$9|V|A|W|B|C]|$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@$9|11|A|12|1|13]]|E|$]]|$1|F|3|G|5|6|7|14|8|@]|D|@$9|15|A|16|1|17]]|E|$]]|$1|H|3|-4|5|6|7|18|8|@]|D|@]|E|$]]]|I|$J|$5|K|L|M|E|$N|O]]|P|$5|K|L|M|E|$N|G]]]]

As already said, by design <code>ldd</code> <a href="https://sourceware.org/ml/crossgcc/2008-09/msg00061.html" rel="nofollow noreferrer">can only been executed on target</a>. However, it is possible to mimic <code>ldd</code> behavior using <code>readelf</code>. A script called <code>xldd</code> was developed in <code>crosstool-ng</code> project. An independent version of this script is available here:

<a href="https://gist.github.com/jerome-pouiller/c403786c1394f53f44a3b61214489e6f" rel="nofollow noreferrer">https://gist.github.com/jerome-pouiller/c403786c1394f53f44a3b61214489e6f</a>

I have created a cross compiled arm executable. I want to find the library dependency of the executable. I am using ubuntu natty and installed arm-linux-gnueabi tool chain, which does not contain ldd. Is there a tool available to view arm executables library dependancy in linux.

cross compiler ldd

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我已经创建了一个交叉编译的arm可执行文件。我想要找到可执行文件的库依赖项。我使用的是ubuntu natty并安装了arm-linux-gnueabi工具链，它不包含ldd。是否有工具可用于查看linux中的arm可执行程序库相关性。

问交叉编译ldd
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回答 5

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问交叉编译lddEN

回答 5

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问交叉编译ldd
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