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#!/bin/bash
#
# Auto-generate requirements for executables (both ELF and a.out) and library
# sonames, script interpreters, and perl modules.
#
ulimit -c 0
#
# --- Set needed to 0 for traditional find-requires behavior.
needed=1
if [ X"$1" = Xldd ]; then
needed=0
elif [ X"$1" = Xobjdump ]; then
needed=1
fi
[ -z "$OBJDUMP" ] && OBJDUMP=objdump
#
# --- Grab the file manifest and classify files.
#filelist=`sed "s/['\"]/\\\&/g"`
filelist=`sed "s/[]['\"*?{}]/\\\\\&/g"`
exelist=`echo $filelist | xargs -r file | egrep -v ":.* (commands|script)[, ]" | \
grep ":.*executable" | cut -d: -f1`
scriptlist=`echo $filelist | xargs -r file | \
egrep ":.* (commands|script)[, ]" | cut -d: -f1`
liblist=`echo $filelist | xargs -r file | \
grep ":.*shared object" | cut -d : -f1`
interplist=
perllist=
pythonlist=
tcllist=
#
# --- Alpha does not mark 64bit dependencies
case `uname -m` in
alpha*) mark64="" ;;
*) mark64="()(64bit)" ;;
esac
if [ "$needed" -eq 0 ]; then
#
# --- Executable dependency sonames.
for f in $exelist; do
[ -r $f -a -x $f ] || continue
lib64=`if file -L $f 2>/dev/null | \
grep "ELF 64-bit" >/dev/null; then echo "$mark64"; fi`
ldd $f | awk '/=>/ {
if ($1 !~ /libNoVersion.so/ && $1 !~ /4[um]lib.so/ && $1 !~ /libredhat-kernel.so/) {
gsub(/'\''"/,"\\&",$1);
printf "%s'$lib64'\n", $1
}
}'
done | xargs -r -n 1 basename | sort -u
#
# --- Library dependency sonames.
for f in $liblist; do
[ -r $f ] || continue
lib64=`if file -L $f 2>/dev/null | \
grep "ELF 64-bit" >/dev/null; then echo "$mark64"; fi`
ldd $f | awk '/=>/ {
if ($1 !~ /libNoVersion.so/ && $1 !~ /4[um]lib.so/ && $1 !~ /libredhat-kernel.so/) {
gsub(/'\''"/,"\\&",$1);
printf "%s'$lib64'\n", $1
}
}'
done | xargs -r -n 1 basename | sort -u
fi
#
# --- Script interpreters.
for f in $scriptlist; do
[ -r $f -a -x $f ] || continue
interp=`head -n 1 $f | grep '^#!' | sed -e 's/^\#\![ ]*//' | cut -d" " -f1`
interplist="$interplist $interp"
case $interp in
*/perl) perllist="$perllist $f" ;;
esac
done
[ -n "$interplist" ] && { echo "$interplist" | tr '[:blank:]' \\n | sort -u ; }
#
# --- Add perl module files to perllist.
for f in $filelist; do
[ -r $f -a "${f%.pm}" != "${f}" ] && perllist="$perllist $f"
done
#
# --- Weak symbol versions (from glibc).
[ -n "$mark64" ] && mark64="(64bit)"
for f in $liblist $exelist ; do
[ -r $f ] || continue
lib64=`if file -L $f 2>/dev/null | \
grep "ELF 64-bit" >/dev/null; then echo "$mark64"; fi`
$OBJDUMP -p $f | awk 'BEGIN { START=0; LIBNAME=""; needed='$needed'; }
/^$/ { START=0; }
/^Dynamic Section:$/ { START=1; }
(START==1) && /NEEDED/ {
if (needed) {
if ("'$lib64'" != "") {
sub(/$/, "()'$lib64'", $2) ;
}
print $2 ;
}
}
(START==2) && /^[A-Za-z]/ { START=3; }
/^Version References:$/ { START=2; }
(START==2) && /required from/ {
sub(/:/, "", $3);
LIBNAME=$3;
}
(START==2) && (LIBNAME!="") && ($4!="") {
print LIBNAME "(" $4 ")'$lib64'";
}
'
done | sort -u
#
# --- Perl modules.
[ -x /usr/lib/rpm/perl.req -a -n "$perllist" ] && \
echo $perllist | tr '[:blank:]' \\n | /usr/lib/rpm/perl.req | sort -u
#
# --- Python modules.
[ -x /usr/lib/rpm/redhat/python.req -a -n "$pythonlist" ] && \
echo $pythonlist | tr '[:blank:]' \\n | /usr/lib/rpm/redhat/python.req | sort -u
#
# --- Tcl modules.
[ -x /usr/lib/rpm/redhat/tcl.req -a -n "$tcllist" ] && \
echo $tcllist | tr '[:blank:]' \\n | /usr/lib/rpm/redhat/tcl.req | sort -u
#
# --- Kernel module imported symbols
#
# Since we don't (yet) get passed the name of the package being built, we
# cheat a little here by looking first for a kernel, then for a kmod.
#
unset is_kmod
for f in $filelist; do
if [ $(echo "$f" | sed -r -ne 's:^.*/lib/modules/(.*)/(.*)\.ko(\.gz|\.bz2|\.xz)?$:\2:p') ]
then
is_kmod=1;
elif [ $(echo "$f" | sed -r -ne 's:^.*/boot/(.*):\1:p') ]
then
unset is_kmod;
break;
fi
done
[ -x /usr/lib/rpm/redhat/find-requires.ksyms ] && [ "$is_kmod" ] &&
printf "%s\n" "${filelist[@]}" | /usr/lib/rpm/redhat/find-requires.ksyms
exit 0