67 lines
1.5 KiB
Bash
67 lines
1.5 KiB
Bash
#! /bin/sh
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# This is the `ldd' command, which lists what shared libraries are
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# used by given dynamically-linked executables. It works by invoking the
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# run-time dynamic linker as a command and setting the environment
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# variable LD_TRACE_LOADED_OBJECTS to a non-empty value.
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RTLD=@RTLD@
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usage="\
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ldd [OPTION]... FILE...
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--help print this help and exit
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--version print version information and exit
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Report bugs to <bug-glibc@prep.ai.mit.edu>."
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while test $# -gt 0; do
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case "$1" in
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--v*)
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echo 'ldd (GNU libc) @VERSION@'; exit 0 ;;
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--h*)
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echo "$usage"; exit 0 ;;
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--) # Stop option prcessing
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shift; break ;;
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*)
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break ;;
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esac
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done
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case $# in
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0)
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echo >&2 "\
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ldd: missing file arguments
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Try \`ldd --help' for more information."
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exit 1 ;;
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1)
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# We don't list the file name when there is only one.
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case "$1" in
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/*) file="$1" ;;
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*) file="./$1" ;;
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esac
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if test ! -f "$file"; then
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echo "${file}: no such file"
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elif ${RTLD} --verify "$file"; then
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LD_TRACE_LOADED_OBJECTS=1 exec ${RTLD} "$file" && exit 1
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else
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echo ' not a dynamic executable'
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fi
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exit ;;
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*)
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set -e # Bail out immediately if ${RTLD} loses on any argument.
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for file; do
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echo "${file}:"
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case "$file" in
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/*) : ;;
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*) file="./$file" ;;
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esac
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if test ! -f "$file"; then
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echo "$file: no such file"
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elif ${RTLD} --verify "$file"; then
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LD_TRACE_LOADED_OBJECTS=1 ${RTLD} "$file"
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else
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echo ' not a dynamic executable'
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fi
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done
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esac
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exit 0
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