Gecko [ 0.0.0.0 ]

Name	Size	Permission
[	54.41 KB	-rwxr-xr-x
addr2line	23.22 KB	-rwxr-xr-x
apt	18.31 KB	-rwxr-xr-x
apt-cache	90.38 KB	-rwxr-xr-x
apt-cdrom	26.38 KB	-rwxr-xr-x
apt-config	30.31 KB	-rwxr-xr-x
apt-get	58.38 KB	-rwxr-xr-x
apt-mark	62.38 KB	-rwxr-xr-x
ar	51.25 KB	-rwxr-xr-x
arch	42.45 KB	-rwxr-xr-x
as	776.55 KB	-rwxr-xr-x
autoconf	6.54 KB	-rwxr-xr-x
autoheader	8.88 KB	-rwxr-xr-x
autom4te	34.11 KB	-rwxr-xr-x
autoreconf	26.24 KB	-rwxr-xr-x
autoscan	16.78 KB	-rwxr-xr-x
autoupdate	33.22 KB	-rwxr-xr-x
awk	166.66 KB	-rwxr-xr-x
b2sum	62.45 KB	-rwxr-xr-x
base32	46.41 KB	-rwxr-xr-x
base64	46.41 KB	-rwxr-xr-x
basename	42.41 KB	-rwxr-xr-x
basenc	58.41 KB	-rwxr-xr-x
bash	1.24 MB	-rwxr-xr-x
bashbug	6.78 KB	-rwxr-xr-x
bunzip2	38.3 KB	-rwxr-xr-x
bzcat	38.3 KB	-rwxr-xr-x
bzcmp	2.17 KB	-rwxr-xr-x
bzdiff	2.17 KB	-rwxr-xr-x
bzegrep	3.69 KB	-rwxr-xr-x
bzexe	4.78 KB	-rwxr-xr-x
bzfgrep	3.69 KB	-rwxr-xr-x
bzgrep	3.69 KB	-rwxr-xr-x
bzip2	38.3 KB	-rwxr-xr-x
bzip2recover	14.23 KB	-rwxr-xr-x
bzless	1.27 KB	-rwxr-xr-x
bzmore	1.27 KB	-rwxr-xr-x
c++	1.11 MB	-rwxr-xr-x
c++filt	22.59 KB	-rwxr-xr-x
c89	428 B	-rwxr-xr-x
c89-gcc	428 B	-rwxr-xr-x
c99	454 B	-rwxr-xr-x
c99-gcc	454 B	-rwxr-xr-x
c_rehash	6.73 KB	-rwxr-xr-x
captoinfo	94.34 KB	-rwxr-xr-x
cat	46.48 KB	-rwxr-xr-x
cc	1.11 MB	-rwxr-xr-x
chage	111.18 KB	-rwxr-sr-x
chcon	78.41 KB	-rwxr-xr-x
chfn	69.23 KB	-rwsr-xr-x
chgrp	74.45 KB	-rwxr-xr-x
chmod	70.45 KB	-rwxr-xr-x
choom	54.38 KB	-rwxr-xr-x
chown	74.45 KB	-rwxr-xr-x
chrt	70.38 KB	-rwxr-xr-x
chsh	51.7 KB	-rwsr-xr-x
cksum	134.45 KB	-rwxr-xr-x
clear	14.24 KB	-rwxr-xr-x
clear_console	14.15 KB	-rwxr-xr-x
cmp	54.95 KB	-rwxr-xr-x
comm	46.45 KB	-rwxr-xr-x
corelist	15.01 KB	-rwxr-xr-x
cp	146.45 KB	-rwxr-xr-x
cpan	8.16 KB	-rwxr-xr-x
cpan5.40-x86_64-linux-gnu	8.18 KB	-rwxr-xr-x
cpp	1.11 MB	-rwxr-xr-x
cpp-14	1.11 MB	-rwxr-xr-x
csplit	58.45 KB	-rwxr-xr-x
curl	314.34 KB	-rwxr-xr-x
cut	54.45 KB	-rwxr-xr-x
dash	126.7 KB	-rwxr-xr-x
date	98.45 KB	-rwxr-xr-x
dd	74.48 KB	-rwxr-xr-x
deb-systemd-helper	23.79 KB	-rwxr-xr-x
deb-systemd-invoke	6.97 KB	-rwxr-xr-x
debconf	2.8 KB	-rwxr-xr-x
debconf-apt-progress	11.57 KB	-rwxr-xr-x
debconf-communicate	623 B	-rwxr-xr-x
debconf-copydb	1.68 KB	-rwxr-xr-x
debconf-escape	668 B	-rwxr-xr-x
debconf-set-selections	3.14 KB	-rwxr-xr-x
debconf-show	1.78 KB	-rwxr-xr-x
df	106.92 KB	-rwxr-xr-x
diff	159.61 KB	-rwxr-xr-x
diff3	71.14 KB	-rwxr-xr-x
dir	154.91 KB	-rwxr-xr-x
dircolors	54.45 KB	-rwxr-xr-x
dirname	42.41 KB	-rwxr-xr-x
dmesg	88.71 KB	-rwxr-xr-x
dnsdomainname	26.15 KB	-rwxr-xr-x
domainname	26.15 KB	-rwxr-xr-x
dpkg	319.05 KB	-rwxr-xr-x
dpkg-architecture	14.84 KB	-rwxr-xr-x
dpkg-buildapi	1.79 KB	-rwxr-xr-x
dpkg-buildflags	8.14 KB	-rwxr-xr-x
dpkg-buildpackage	30.32 KB	-rwxr-xr-x
dpkg-buildtree	2.12 KB	-rwxr-xr-x
dpkg-checkbuilddeps	7.45 KB	-rwxr-xr-x
dpkg-deb	178.53 KB	-rwxr-xr-x
dpkg-distaddfile	2.72 KB	-rwxr-xr-x
dpkg-divert	158.77 KB	-rwxr-xr-x
dpkg-genbuildinfo	18.69 KB	-rwxr-xr-x
dpkg-genchanges	17.51 KB	-rwxr-xr-x
dpkg-gencontrol	14.62 KB	-rwxr-xr-x
dpkg-gensymbols	10.66 KB	-rwxr-xr-x
dpkg-maintscript-helper	20.63 KB	-rwxr-xr-x
dpkg-mergechangelogs	8.7 KB	-rwxr-xr-x
dpkg-name	6.58 KB	-rwxr-xr-x
dpkg-parsechangelog	4.83 KB	-rwxr-xr-x
dpkg-query	170.77 KB	-rwxr-xr-x
dpkg-realpath	58.33 KB	-rwxr-xr-x
dpkg-scanpackages	8.45 KB	-rwxr-xr-x
dpkg-scansources	9.15 KB	-rwxr-xr-x
dpkg-shlibdeps	32.59 KB	-rwxr-xr-x
dpkg-source	23.18 KB	-rwxr-xr-x
dpkg-split	142.48 KB	-rwxr-xr-x
dpkg-statoverride	86.51 KB	-rwxr-xr-x
dpkg-trigger	90.5 KB	-rwxr-xr-x
dpkg-vendor	3.18 KB	-rwxr-xr-x
du	110.45 KB	-rwxr-xr-x
echo	42.41 KB	-rwxr-xr-x
egrep	41 B	-rwxr-xr-x
elfedit	35.13 KB	-rwxr-xr-x
enc2xs	40.97 KB	-rwxr-xr-x
encguess	2.99 KB	-rwxr-xr-x
env	54.83 KB	-rwxr-xr-x
expand	46.45 KB	-rwxr-xr-x
expiry	30.52 KB	-rwxr-sr-x
expr	50.41 KB	-rwxr-xr-x
factor	74.45 KB	-rwxr-xr-x
fallocate	34.38 KB	-rwxr-xr-x
false	42.41 KB	-rwxr-xr-x
fgrep	41 B	-rwxr-xr-x
file	26.56 KB	-rwxr-xr-x
find	227.58 KB	-rwxr-xr-x
findmnt	99.9 KB	-rwxr-xr-x
flock	34.46 KB	-rwxr-xr-x
fmt	50.41 KB	-rwxr-xr-x
fold	46.41 KB	-rwxr-xr-x
g++	1.11 MB	-rwxr-xr-x
g++-14	1.11 MB	-rwxr-xr-x
gcc	1.11 MB	-rwxr-xr-x
gcc-14	1.11 MB	-rwxr-xr-x
gcc-ar	30.58 KB	-rwxr-xr-x
gcc-ar-14	30.58 KB	-rwxr-xr-x
gcc-nm	30.58 KB	-rwxr-xr-x
gcc-nm-14	30.58 KB	-rwxr-xr-x
gcc-ranlib	30.58 KB	-rwxr-xr-x
gcc-ranlib-14	30.58 KB	-rwxr-xr-x
gcov	448.12 KB	-rwxr-xr-x
gcov-14	448.12 KB	-rwxr-xr-x
gcov-dump	364.07 KB	-rwxr-xr-x
gcov-dump-14	364.07 KB	-rwxr-xr-x
gcov-tool	396.16 KB	-rwxr-xr-x
gcov-tool-14	396.16 KB	-rwxr-xr-x
gencat	26.37 KB	-rwxr-xr-x
getconf	26.29 KB	-rwxr-xr-x
getent	34.65 KB	-rwxr-xr-x
getopt	34.38 KB	-rwxr-xr-x
gmake	271.92 KB	-rwxr-xr-x
gp-archive	35.09 KB	-rwxr-xr-x
gp-collect-app	55.27 KB	-rwxr-xr-x
gp-display-html	630.35 KB	-rwxr-xr-x
gp-display-src	30.8 KB	-rwxr-xr-x
gp-display-text	157.36 KB	-rwxr-xr-x
gpasswd	86.49 KB	-rwsr-xr-x
gprof	96.42 KB	-rwxr-xr-x
gprofng	22.59 KB	-rwxr-xr-x
gprofng-archive	35.09 KB	-rwxr-xr-x
gprofng-collect-app	55.27 KB	-rwxr-xr-x
gprofng-display-html	630.35 KB	-rwxr-xr-x
gprofng-display-src	30.8 KB	-rwxr-xr-x
gprofng-display-text	157.36 KB	-rwxr-xr-x
grep	198.39 KB	-rwxr-xr-x
groups	42.41 KB	-rwxr-xr-x
gunzip	2.28 KB	-rwxr-xr-x
gzexe	6.29 KB	-rwxr-xr-x
gzip	99.8 KB	-rwxr-xr-x
h2ph	28.15 KB	-rwxr-xr-x
h2xs	59.51 KB	-rwxr-xr-x
hardlink	62.48 KB	-rwxr-xr-x
head	50.45 KB	-rwxr-xr-x
hostid	42.41 KB	-rwxr-xr-x
hostname	26.15 KB	-rwxr-xr-x
i386	86.66 KB	-rwxr-xr-x
iconv	66.44 KB	-rwxr-xr-x
id	50.45 KB	-rwxr-xr-x
ifnames	4.09 KB	-rwxr-xr-x
infocmp	66.31 KB	-rwxr-xr-x
infotocap	94.34 KB	-rwxr-xr-x
install	150.48 KB	-rwxr-xr-x
instmodsh	4.27 KB	-rwxr-xr-x
ionice	34.38 KB	-rwxr-xr-x
ipcmk	34.45 KB	-rwxr-xr-x
ipcrm	74.38 KB	-rwxr-xr-x
ipcs	82.38 KB	-rwxr-xr-x
ischroot	14.41 KB	-rwxr-xr-x
join	58.48 KB	-rwxr-xr-x
json_pp	4.9 KB	-rwxr-xr-x
ld	1.78 MB	-rwxr-xr-x
ld.bfd	1.78 MB	-rwxr-xr-x
ld.so	220.31 KB	-rwxr-xr-x
ldd	5.23 KB	-rwxr-xr-x
libnetcfg	15.41 KB	-rwxr-xr-x
link	42.41 KB	-rwxr-xr-x
linux32	86.66 KB	-rwxr-xr-x
linux64	86.66 KB	-rwxr-xr-x
ln	74.45 KB	-rwxr-xr-x
locale	45.56 KB	-rwxr-xr-x
localedef	303.05 KB	-rwxr-xr-x
logger	58.98 KB	-rwxr-xr-x
login	90.38 KB	-rwxr-xr-x
logname	42.41 KB	-rwxr-xr-x
ls	154.91 KB	-rwxr-xr-x
lsblk	242.39 KB	-rwxr-xr-x
lscpu	162.39 KB	-rwxr-xr-x
lsipc	110.38 KB	-rwxr-xr-x
lslocks	78.8 KB	-rwxr-xr-x
lslogins	110.38 KB	-rwxr-xr-x
lsmem	70.38 KB	-rwxr-xr-x
lsns	90.39 KB	-rwxr-xr-x
lto-dump	31.43 MB	-rwxr-xr-x
lto-dump-14	31.43 MB	-rwxr-xr-x
lzcat	102.7 KB	-rwxr-xr-x
lzcmp	7.41 KB	-rwxr-xr-x
lzdiff	7.41 KB	-rwxr-xr-x
lzegrep	10.17 KB	-rwxr-xr-x
lzfgrep	10.17 KB	-rwxr-xr-x
lzgrep	10.17 KB	-rwxr-xr-x
lzless	2.33 KB	-rwxr-xr-x
lzma	102.7 KB	-rwxr-xr-x
lzmainfo	18.3 KB	-rwxr-xr-x
lzmore	2.18 KB	-rwxr-xr-x
m4	279.52 KB	-rwxr-xr-x
make	271.92 KB	-rwxr-xr-x
make-first-existing-target	4.79 KB	-rwxr-xr-x
mawk	166.66 KB	-rwxr-xr-x
mcookie	38.45 KB	-rwxr-xr-x
md5sum	54.45 KB	-rwxr-xr-x
mkdir	86.41 KB	-rwxr-xr-x
mkfifo	74.41 KB	-rwxr-xr-x
mknod	82.41 KB	-rwxr-xr-x
mktemp	46.41 KB	-rwxr-xr-x
more	58.39 KB	-rwxr-xr-x
mount	70.38 KB	-rwsr-xr-x
mountpoint	18.38 KB	-rwxr-xr-x
mv	146.45 KB	-rwxr-xr-x
namei	38.38 KB	-rwxr-xr-x
nawk	166.66 KB	-rwxr-xr-x
newgrp	18.38 KB	-rwsr-xr-x
nice	42.41 KB	-rwxr-xr-x
nisdomainname	26.15 KB	-rwxr-xr-x
nl	50.51 KB	-rwxr-xr-x
nm	44.1 KB	-rwxr-xr-x
nohup	46.41 KB	-rwxr-xr-x
nproc	46.41 KB	-rwxr-xr-x
nsenter	86.65 KB	-rwxr-xr-x
numfmt	66.48 KB	-rwxr-xr-x
objcopy	155.83 KB	-rwxr-xr-x
objdump	387.05 KB	-rwxr-xr-x
od	82.45 KB	-rwxr-xr-x
openssl	1.05 MB	-rwxr-xr-x
pager	58.39 KB	-rwxr-xr-x
partx	134.39 KB	-rwxr-xr-x
passwd	115.4 KB	-rwsr-xr-x
paste	46.45 KB	-rwxr-xr-x
patch	167.59 KB	-rwxr-xr-x
pathchk	42.41 KB	-rwxr-xr-x
perl	3.75 MB	-rwxr-xr-x
perl5.40-x86_64-linux-gnu	14.41 KB	-rwxr-xr-x
perl5.40.1	3.75 MB	-rwxr-xr-x
perlbug	44.52 KB	-rwxr-xr-x
perldoc	125 B	-rwxr-xr-x
perlivp	10.61 KB	-rwxr-xr-x
perlthanks	44.52 KB	-rwxr-xr-x
piconv	8.16 KB	-rwxr-xr-x
pidof	26.31 KB	-rwxr-xr-x
pinky	58.45 KB	-rwxr-xr-x
pkg-config	44.04 KB	-rwxr-xr-x
pkgconf	44.04 KB	-rwxr-xr-x
pl2pm	4.43 KB	-rwxr-xr-x
pldd	22.37 KB	-rwxr-xr-x
pod2html	3.95 KB	-rwxr-xr-x
pod2man	18.46 KB	-rwxr-xr-x
pod2text	12.8 KB	-rwxr-xr-x
pod2usage	4.01 KB	-rwxr-xr-x
podchecker	3.64 KB	-rwxr-xr-x
pr	78.51 KB	-rwxr-xr-x
printenv	42.41 KB	-rwxr-xr-x
printf	66.41 KB	-rwxr-xr-x
prlimit	42.9 KB	-rwxr-xr-x
prove	13.36 KB	-rwxr-xr-x
ptar	3.48 KB	-rwxr-xr-x
ptardiff	2.58 KB	-rwxr-xr-x
ptargrep	4.29 KB	-rwxr-xr-x
ptx	62.48 KB	-rwxr-xr-x
pwd	42.41 KB	-rwxr-xr-x
ranlib	51.25 KB	-rwxr-xr-x
rbash	1.24 MB	-rwxr-xr-x
re2c	1.05 MB	-rwxr-xr-x
re2d	1.05 MB	-rwxr-xr-x
re2go	1.05 MB	-rwxr-xr-x
re2hs	1.05 MB	-rwxr-xr-x
re2js	1.05 MB	-rwxr-xr-x
re2ocaml	1.05 MB	-rwxr-xr-x
re2py	1.05 MB	-rwxr-xr-x
re2rust	1.05 MB	-rwxr-xr-x
re2v	1.05 MB	-rwxr-xr-x
re2zig	1.05 MB	-rwxr-xr-x
readelf	759.63 KB	-rwxr-xr-x
readlink	54.41 KB	-rwxr-xr-x
realpath	54.45 KB	-rwxr-xr-x
rename.ul	30.38 KB	-rwxr-xr-x
renice	14.38 KB	-rwxr-xr-x
reset	30.24 KB	-rwxr-xr-x
rev	14.38 KB	-rwxr-xr-x
rgrep	30 B	-rwxr-xr-x
rm	74.45 KB	-rwxr-xr-x
rmdir	42.41 KB	-rwxr-xr-x
rpcgen	95 KB	-rwxr-xr-x
run-parts	26.75 KB	-rwxr-xr-x
runcon	46.41 KB	-rwxr-xr-x
savelog	10.24 KB	-rwxr-xr-x
script	78.38 KB	-rwxr-xr-x
scriptlive	66.38 KB	-rwxr-xr-x
scriptreplay	46.38 KB	-rwxr-xr-x
sdiff	67.09 KB	-rwxr-xr-x
sed	123.46 KB	-rwxr-xr-x
seq	46.41 KB	-rwxr-xr-x
setarch	86.66 KB	-rwxr-xr-x
setpriv	90.39 KB	-rwxr-xr-x
setsid	14.38 KB	-rwxr-xr-x
setterm	46.38 KB	-rwxr-xr-x
sg	18.38 KB	-rwsr-xr-x
sh	126.7 KB	-rwxr-xr-x
sha1sum	54.45 KB	-rwxr-xr-x
sha224sum	54.45 KB	-rwxr-xr-x
sha256sum	54.45 KB	-rwxr-xr-x
sha384sum	54.45 KB	-rwxr-xr-x
sha512sum	54.45 KB	-rwxr-xr-x
shasum	9.75 KB	-rwxr-xr-x
shred	66.45 KB	-rwxr-xr-x
shuf	62.41 KB	-rwxr-xr-x
size	26.94 KB	-rwxr-xr-x
sleep	42.41 KB	-rwxr-xr-x
sort	118.7 KB	-rwxr-xr-x
splain	19 KB	-rwxr-xr-x
split	70.86 KB	-rwxr-xr-x
sqv	1.78 MB	-rwxr-xr-x
stat	102.45 KB	-rwxr-xr-x
stdbuf	46.41 KB	-rwxr-xr-x
streamzip	7.87 KB	-rwxr-xr-x
strings	31.06 KB	-rwxr-xr-x
strip	155.86 KB	-rwxr-xr-x
stty	74.45 KB	-rwxr-xr-x
su	82.38 KB	-rwsr-xr-x
sum	50.42 KB	-rwxr-xr-x
sync	42.41 KB	-rwxr-xr-x
tabs	18.23 KB	-rwxr-xr-x
tac	46.41 KB	-rwxr-xr-x
tail	78.48 KB	-rwxr-xr-x
tar	447.54 KB	-rwxr-xr-x
taskset	66.38 KB	-rwxr-xr-x
tee	46.45 KB	-rwxr-xr-x
tempfile	14.23 KB	-rwxr-xr-x
test	46.41 KB	-rwxr-xr-x
tic	94.34 KB	-rwxr-xr-x
timeout	46.86 KB	-rwxr-xr-x
toe	22.23 KB	-rwxr-xr-x
touch	86.45 KB	-rwxr-xr-x
tput	30.27 KB	-rwxr-xr-x
tr	58.41 KB	-rwxr-xr-x
true	42.41 KB	-rwxr-xr-x
truncate	46.41 KB	-rwxr-xr-x
tset	30.24 KB	-rwxr-xr-x
tsort	58.41 KB	-rwxr-xr-x
tty	42.41 KB	-rwxr-xr-x
tzselect	21.36 KB	-rwxr-xr-x
uclampset	70.38 KB	-rwxr-xr-x
umount	54.38 KB	-rwsr-xr-x
uname	42.45 KB	-rwxr-xr-x
uncompress	2.28 KB	-rwxr-xr-x
unexpand	46.45 KB	-rwxr-xr-x
uniq	54.45 KB	-rwxr-xr-x
unlink	42.41 KB	-rwxr-xr-x
unlzma	102.7 KB	-rwxr-xr-x
unshare	90.62 KB	-rwxr-xr-x
unxz	102.7 KB	-rwxr-xr-x
update-alternatives	58.31 KB	-rwxr-xr-x
users	50.41 KB	-rwxr-xr-x
vdir	154.91 KB	-rwxr-xr-x
wall	46.38 KB	-rwxr-xr-x
wc	66.45 KB	-rwxr-xr-x
wcurl	10.98 KB	-rwxr-xr-x
wdctl	74.38 KB	-rwxr-xr-x
wget	471.36 KB	-rwxr-xr-x
whereis	30.38 KB	-rwxr-xr-x
which	1.05 KB	-rwxr-xr-x
which.debianutils	1.05 KB	-rwxr-xr-x
who	62.45 KB	-rwxr-xr-x
whoami	42.41 KB	-rwxr-xr-x
x86_64	86.66 KB	-rwxr-xr-x
x86_64-linux-gnu-addr2line	23.22 KB	-rwxr-xr-x
x86_64-linux-gnu-ar	51.25 KB	-rwxr-xr-x
x86_64-linux-gnu-as	776.55 KB	-rwxr-xr-x
x86_64-linux-gnu-c++filt	22.59 KB	-rwxr-xr-x
x86_64-linux-gnu-cpp	1.11 MB	-rwxr-xr-x
x86_64-linux-gnu-cpp-14	1.11 MB	-rwxr-xr-x
x86_64-linux-gnu-elfedit	35.13 KB	-rwxr-xr-x
x86_64-linux-gnu-g++	1.11 MB	-rwxr-xr-x
x86_64-linux-gnu-g++-14	1.11 MB	-rwxr-xr-x
x86_64-linux-gnu-gcc	1.11 MB	-rwxr-xr-x
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Code Editor : dpkg-shlibdeps

#!/usr/bin/perl
#
# dpkg-shlibdeps
#
# Copyright © 1996 Ian Jackson
# Copyright © 2000 Wichert Akkerman
# Copyright © 2006 Frank Lichtenheld
# Copyright © 2006-2010,2012-2015 Guillem Jover <guillem@debian.org>
# Copyright © 2007, 2016 Raphaël Hertzog <hertzog@debian.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.

use strict;
use warnings;
use feature qw(state);

use List::Util qw(any none sum);
use Cwd qw(realpath);
use File::Basename qw(dirname);

use Dpkg ();
use Dpkg::Gettext;
use Dpkg::ErrorHandling;
use Dpkg::IPC;
use Dpkg::Path qw(relative_to_pkg_root guess_pkg_root_dir
		  check_files_are_the_same get_control_path);
use Dpkg::Version;
use Dpkg::Shlibs qw(find_library get_library_paths);
use Dpkg::Shlibs::Objdump;
use Dpkg::Shlibs::SymbolFile;
use Dpkg::Substvars;
use Dpkg::Arch qw(get_host_arch);
use Dpkg::BuildAPI qw(get_build_api);
use Dpkg::Package;
use Dpkg::Deps;
use Dpkg::Control::Info;
use Dpkg::Control::Fields;

use constant {
    WARN_SYM_NOT_FOUND => 1,
    WARN_DEP_AVOIDABLE => 2,
    WARN_NOT_NEEDED => 4,
};

my %warn2bits = (
    'symbol-not-found' => WARN_SYM_NOT_FOUND,
    'avoidable-dependency' => WARN_DEP_AVOIDABLE,
    'useless-linkage' => WARN_NOT_NEEDED,
);

# By increasing importance
my @depfields = qw(Suggests Recommends Depends Pre-Depends);
my $i = 0; my %depstrength = map { $_ => $i++ } @depfields;

textdomain('dpkg-dev');

my $admindir = $Dpkg::ADMINDIR;
my $oppackage;
my $shlibsoverride = "$Dpkg::CONFDIR/shlibs.override";
my $shlibsdefault = "$Dpkg::CONFDIR/shlibs.default";
my $shlibslocal = 'debian/shlibs.local';
my $packagetype;
my $dependencyfield;
my $varlistfile = 'debian/substvars';
my $varlistfilenew;
my $varnameprefix = 'shlibs';
my $ignore_missing_info = 0;
my $warnings = WARN_SYM_NOT_FOUND | WARN_DEP_AVOIDABLE;
my $debug = 0;
my @exclude = ();
my @priv_lib_dirs = ();
my @pkg_dir_to_search = ();
my @pkg_dir_to_ignore = ();
my $host_arch = get_host_arch();

my (@pkg_shlibs, @pkg_symbols, @pkg_root_dirs);

my @execs;
my $stdout;

foreach (@ARGV) {
    if (m/^-T(.*)$/) {
	$varlistfile = $1;
    } elsif (m/^-p(\w[-:0-9A-Za-z]*)$/) {
	$varnameprefix = $1;
    } elsif (m/^-L(.*)$/) {
	$shlibslocal = $1;
    } elsif (m/^-l(.*)$/) {
        push @priv_lib_dirs, $1;
    } elsif (m/^-S(.*)$/) {
	push @pkg_dir_to_search, $1;
    } elsif (m/^-I(.*)$/) {
	push @pkg_dir_to_ignore, $1;
    } elsif (m/^-O$/) {
	$stdout = 1;
    } elsif (m/^-O(.+)$/) {
	$varlistfile = $1;
    } elsif (m/^-(?:\?|-help)$/) {
	usage(); exit(0);
    } elsif (m/^--version$/) {
	version(); exit(0);
    } elsif (m/^--admindir=(.*)$/) {
	$admindir = $1;
	if (not -d $admindir) {
	    error(g_("administrative directory '%s' does not exist"), $admindir);
	}
	$ENV{DPKG_ADMINDIR} = $admindir;
    } elsif (m/^-d(.*)$/) {
	$dependencyfield = field_capitalize($1);
	if (not defined $depstrength{$dependencyfield}) {
	    warning(g_("unrecognized dependency field '%s'"), $dependencyfield);
	}
    } elsif (m/^-e(.*)$/) {
        push @execs, [ $1, $dependencyfield ];
    } elsif (m/^--ignore-missing-info$/) {
	$ignore_missing_info = 1;
    } elsif (m/^--warnings=(\d+)$/) {
	$warnings = $1;
    } elsif (m/^--warnings=([a-z,-]+)$/) {
        $warnings = sum map { $warn2bits{$_} } split m{,}, $1;
    } elsif (m/^--package=(.+)$/) {
        $oppackage = $1;
        my $err = pkg_name_is_illegal($oppackage);
        error(g_("illegal package name '%s': %s"), $oppackage, $err) if $err;

# Exclude self.
        push @exclude, $1;
    } elsif (m/^-t(.*)$/) {
	$packagetype = $1;
    } elsif (m/^-v$/) {
	$debug++;
    } elsif (m/^-x(.*)$/) {
	push @exclude, $1;
    } elsif (m/^-/) {
	usageerr(g_("unknown option '%s'"), $_);
    } else {
        push @execs, [ $_, $dependencyfield ];
    }
}
usageerr(g_('need at least one executable')) unless scalar @execs;

report_options(debug_level => $debug);

sub ignore_pkgdir {
    my $path = shift;
    return any { $path =~ /^\Q$_\E/ } @pkg_dir_to_ignore;
}

if (-d 'debian') {
    push @pkg_symbols, grep { !ignore_pkgdir($_) } glob 'debian/*/DEBIAN/symbols';
    push @pkg_shlibs, grep { !ignore_pkgdir($_) } glob 'debian/*/DEBIAN/shlibs';
    my %uniq = map { guess_pkg_root_dir($_) => 1 } (@pkg_symbols, @pkg_shlibs);
    push @pkg_root_dirs, keys %uniq;
}

my $control = Dpkg::Control::Info->new();
# Initialize build API level.
get_build_api($control);

my $default_depfield;

if (defined $oppackage) {
    my $pkg = $control->get_pkg_by_name($oppackage);
    if (not defined $pkg) {
        error(g_('package %s not in control info'), $oppackage);
    }

$packagetype //= $pkg->{'Package-Type'} ||
                     $pkg->get_custom_field('Package-Type');

# For essential packages we default to Pre-Depends.
    if (defined $pkg->{Essential} && $pkg->{Essential} eq 'yes') {
        $default_depfield = 'Pre-Depends';
    }
}

$packagetype //= 'deb';
$default_depfield //= 'Depends';

my %exec;
foreach my $exec_item (@execs) {
    my ($path, $depfield) = @{$exec_item};

$depfield //= $default_depfield;

if (exists $exec{$path}) {
        # Affect the binary to the most important field
        if ($depstrength{$depfield} > $depstrength{$exec{$path}}) {
            $exec{$path} = $depfield;
        }
    } else {
        $exec{$path} = $depfield;
    }
}

foreach my $libdir (@priv_lib_dirs) {
    Dpkg::Shlibs::add_library_dir($libdir);
}

my $fields = $control->get_source();
my $bd_value = deps_concat($fields->{'Build-Depends'}, $fields->{'Build-Depends-Arch'});
my $build_deps = deps_parse($bd_value, build_dep => 1, reduce_restrictions => 1);
error(g_('cannot parse %s field'), 'Build-Depends/Build-Depends-Arch')
    unless defined $build_deps;

my %dependencies;

# Statistics on soname seen in the whole run (with multiple analysis of
# binaries)
my %global_soname_notfound;
my %global_soname_used;
my %global_soname_needed;

# Cached data.
my %shlibs_cache;
my %symfile_cache;
my %objdump_cache;
my %symfile_has_soname_cache;

# Used to count errors due to missing libraries
my $error_count = 0;

my $cur_field;
foreach my $file (keys %exec) {
    $cur_field = $exec{$file};
    debug(1, ">> Scanning $file (for $cur_field field)");

my $obj = Dpkg::Shlibs::Objdump::Object->new($file);
    my @sonames = $obj->get_needed_libraries;

# Load symbols files for all needed libraries (identified by SONAME)
    my %libfiles;
    my %altlibfiles;
    my %soname_libs;
    my %soname_notfound;
    my %alt_soname;
    foreach my $soname (@sonames) {
	my @libs = my_find_library($soname, $obj->{RPATH}, $obj->{exec_abi}, $file);
	unless (scalar @libs) {
	    $soname_notfound{$soname} = 1;
	    $global_soname_notfound{$soname} = 1;
	    my $msg = g_('cannot find library %s needed by %s (ELF ' .
	                 "format: '%s' abi: '%s'; RPATH: '%s')");
	    if (scalar(split_soname($soname))) {
                errormsg($msg, $soname, $file, $obj->{format}, $obj->{exec_abi},
                         join(':', @{$obj->{RPATH}}));
		$error_count++;
	    } else {
                warning($msg, $soname, $file, $obj->{format}, $obj->{exec_abi},
                        join(':', @{$obj->{RPATH}}));
	    }
	    next;
	}

# Track shared libraries for a given SONAME.
	push @{$soname_libs{$soname}}, @libs;

# Track shared libraries for package mapping.
	foreach my $lib (@libs) {
	    $libfiles{$lib} = $soname;
	    my $reallib = realpath($lib);
	    if ($reallib ne $lib) {
		$altlibfiles{$reallib} = $soname;
	    }
	    debug(1, "Library $soname found in $lib");
        }
    }
    my $file2pkg = find_packages(keys %libfiles, keys %altlibfiles);
    my $symfile = Dpkg::Shlibs::SymbolFile->new();
    my $dumplibs_wo_symfile = Dpkg::Shlibs::Objdump->new();
    SONAME: foreach my $soname (@sonames) {
      # Select the first good entry from the ordered list that we got from
      # find_library(), and skip to the next SONAME.

foreach my $lib (@{$soname_libs{$soname}}) {
	if (none { $_ ne '' } @{$file2pkg->{$lib}}) {
	    # The path of the library as calculated is not the
	    # official path of a packaged file, try to fallback on
	    # the realpath() first, maybe this one is part of a package
	    my $reallib = realpath($lib);
	    if (exists $file2pkg->{$reallib}) {
		$file2pkg->{$lib} = $file2pkg->{$reallib};
	    }
	}
	if (none { $_ ne '' } @{$file2pkg->{$lib}}) {
	    # If the library is really not available in an installed package,
	    # it's because it's in the process of being built
	    # Empty package name will lead to consideration of symbols
	    # file from the package being built only
	    $file2pkg->{$lib} = [''];
	    debug(1, "No associated package found for $lib");
	}

# Load symbols/shlibs files from packages providing libraries
        my $missing_wanted_shlibs_info = 0;
	foreach my $pkg (@{$file2pkg->{$lib}}) {
	    my $symfile_path;
            my $haslocaldep = 0;
            if (-e $shlibslocal and
                defined(extract_from_shlibs($soname, $shlibslocal)))
            {
                $haslocaldep = 1;
            }
            if ($packagetype eq 'deb' and not $haslocaldep) {
		# Use fine-grained dependencies only on real deb
                # and only if the dependency is not provided by shlibs.local
		$symfile_path = find_symbols_file($pkg, $soname, $lib);
            }
            if (defined($symfile_path)) {
                # Load symbol information
                debug(1, "Using symbols file $symfile_path for $soname");
                $symfile_cache{$symfile_path} //=
                   Dpkg::Shlibs::SymbolFile->new(file => $symfile_path);
                $symfile->merge_object_from_symfile($symfile_cache{$symfile_path}, $soname);
            }
	    if (defined($symfile_path) && $symfile->has_object($soname)) {
		# Initialize dependencies with the smallest minimal version
                # of all symbols (unversioned dependency is not ok as the
                # library might not have always been available in the
                # package and we really need it)
		my $dep = $symfile->get_dependency($soname);
		my $minver = $symfile->get_smallest_version($soname) || '';
		update_dependency_version($dep, $minver);
		debug(2, " Minimal version of ($dep) initialized with ($minver)");

# Found a symbols file for the SONAME.
                next SONAME;
	    } else {
		# No symbol file found, fall back to standard shlibs
                debug(1, "Using shlibs+objdump for $soname (file $lib)");
                $objdump_cache{$lib} //= Dpkg::Shlibs::Objdump::Object->new($lib);
                my $libobj = $objdump_cache{$lib};
                my $id = $dumplibs_wo_symfile->add_object($libobj);
		if (($id ne $soname) and ($id ne $lib)) {
		    warning(g_('%s has an unexpected SONAME (%s)'), $lib, $id);
		    $alt_soname{$id} = $soname;
		}

# Only try to generate a dependency for libraries with a SONAME
                if (not $libobj->is_public_library()) {
                    debug(1, "Skipping shlibs+objdump info for private library $lib");
                    next;
		}

# If we found a shlibs file for the SONAME, skip to the next.
                next SONAME if add_shlibs_dep($soname, $pkg, $lib);

$missing_wanted_shlibs_info = 1;

debug(1, "No shlibs+objdump info available, trying next package for $lib");
	    }
	}

next if not $missing_wanted_shlibs_info;

# We will only reach this point, if we have found no symbols nor
        # shlibs files for the given SONAME.

# This failure is fairly new, try to be kind by
        # ignoring as many cases that can be safely ignored
        my $ignore = 0;
        # 1/ when the lib and the binary are in the same
        # package
        my $root_file = guess_pkg_root_dir($file);
        my $root_lib = guess_pkg_root_dir($lib);
        $ignore++ if defined $root_file and defined $root_lib
            and check_files_are_the_same($root_file, $root_lib);
        # 2/ when the lib is not versioned and can't be
        # handled by shlibs
        $ignore++ unless scalar split_soname($soname);
        # 3/ when we have been asked to do so
        $ignore++ if $ignore_missing_info;
        if (not $ignore) {
            errormsg(g_('no dependency information found for %s (used by %s)'),
                     $lib, $file);
            hint(g_('check if the library actually comes from a package'));
            exit 1;
        }
      }
    }

# Scan all undefined symbols of the binary and resolve to a
    # dependency
    my %soname_used;
    foreach my $soname (@sonames) {
        # Initialize statistics
        $soname_used{$soname} = 0;
        $global_soname_used{$soname} //= 0;
        if (exists $global_soname_needed{$soname}) {
            push @{$global_soname_needed{$soname}}, $file;
        } else {
            $global_soname_needed{$soname} = [ $file ];
        }
    }
    my $nb_warnings = 0;
    my $nb_skipped_warnings = 0;
    # Disable warnings about missing symbols when we have not been able to
    # find all libs
    my $disable_warnings = scalar(keys(%soname_notfound));
    my $in_public_dir = 1;
    if (my $relname = relative_to_pkg_root($file)) {
        my $parent_dir = '/' . dirname($relname);
        $in_public_dir = any { $parent_dir eq $_ } get_library_paths();
    } else {
        warning(g_('binaries to analyze should already be ' .
                   "installed in their package's directory"));
    }
    debug(2, 'Analyzing all undefined symbols');
    foreach my $sym ($obj->get_undefined_dynamic_symbols()) {
	my $name = $sym->{name};
	if ($sym->{version}) {
	    $name .= '@' . "$sym->{version}";
	} else {
	    $name .= '@' . 'Base';
	}
        debug(2, " Looking up symbol $name");
	my %symdep = $symfile->lookup_symbol($name, \@sonames);
	if (keys %symdep) {
	    my $depends = $symfile->get_dependency($symdep{soname},
		$symdep{symbol}{dep_id});
            debug(2, " Found in symbols file of $symdep{soname} (minver: " .
                     "$symdep{symbol}{minver}, dep: $depends)");
	    $soname_used{$symdep{soname}}++;
	    $global_soname_used{$symdep{soname}}++;
            if (exists $alt_soname{$symdep{soname}}) {
                # Also count usage on alternate soname
                $soname_used{$alt_soname{$symdep{soname}}}++;
                $global_soname_used{$alt_soname{$symdep{soname}}}++;
            }
	    update_dependency_version($depends, $symdep{symbol}{minver});
	} else {
	    my $syminfo = $dumplibs_wo_symfile->locate_symbol($name);
	    if (not defined($syminfo)) {
                debug(2, ' Not found');
                next unless ($warnings & WARN_SYM_NOT_FOUND);
		next if $disable_warnings;
		# Complain about missing symbols only for executables
		# and public libraries
		if ($obj->is_executable() or $obj->is_public_library()) {
		    my $print_name = $name;
		    # Drop the default suffix for readability
		    $print_name =~ s/\@Base$//;
		    unless ($sym->{weak}) {
			if ($debug or ($in_public_dir and $nb_warnings < 10)
                            or (not $in_public_dir and $nb_warnings < 1))
                        {
                            if ($in_public_dir) {
			        warning(g_('symbol %s used by %s found in none of the ' .
				           'libraries'), $print_name, $file);
                            } else {
			        warning(g_('%s contains an unresolvable reference to ' .
                                           "symbol %s: it's probably a plugin"),
                                        $file, $print_name);
                            }
			    $nb_warnings++;
			} else {
			    $nb_skipped_warnings++;
			}
		    }
		}
	    } else {
                debug(2, " Found in $syminfo->{soname} ($syminfo->{objid})");
		if (exists $alt_soname{$syminfo->{soname}}) {
		    # Also count usage on alternate soname
		    $soname_used{$alt_soname{$syminfo->{soname}}}++;
		    $global_soname_used{$alt_soname{$syminfo->{soname}}}++;
		}
		$soname_used{$syminfo->{soname}}++;
		$global_soname_used{$syminfo->{soname}}++;
	    }
	}
    }
    warning(P_('%d similar warning has been skipped (use -v to see it)',
               '%d other similar warnings have been skipped (use -v to see ' .
               'them all)', $nb_skipped_warnings), $nb_skipped_warnings)
        if $nb_skipped_warnings;
    foreach my $soname (@sonames) {
	# Adjust minimal version of dependencies with information
	# extracted from build-dependencies
        my $dev_pkgs = $symfile->get_field($soname, 'Build-Depends-Packages') //
                       $symfile->get_field($soname, 'Build-Depends-Package');
        foreach my $dev_pkg (split /[,\s]+/, $dev_pkgs // '') {
            debug(1, "Updating dependencies of $soname with build-dependencies");
	    my $minver = get_min_version_from_deps($build_deps, $dev_pkg);
	    if (defined $minver) {
		foreach my $dep ($symfile->get_dependencies($soname)) {
		    update_dependency_version($dep, $minver, 1);
                    debug(1, " Minimal version of $dep updated with $minver");
		}
	    } else {
                debug(1, " No minimal version found in $dev_pkg build-dependency");
            }
	}

# Warn about un-NEEDED libraries
	unless ($soname_notfound{$soname} or $soname_used{$soname}) {
	    # Ignore warning for libm.so.6 if also linked against libstdc++
	    next if ($soname =~ /^libm\.so\.\d+$/ and
	             any { m/^libstdc\+\+\.so\.\d+/ } @sonames);
            next unless ($warnings & WARN_NOT_NEEDED);
	    warning(g_('%s should not be linked against %s (it uses none of ' .
	               "the library's symbols)"), $file, $soname);
	}
    }
}

# Warn of unneeded libraries at the "package" level (i.e. over all
# binaries that we have inspected)
foreach my $soname (keys %global_soname_needed) {
    unless ($global_soname_notfound{$soname} or $global_soname_used{$soname}) {
        next if ($soname =~ /^libm\.so\.\d+$/ and
                 any { m/^libstdc\+\+\.so\.\d+/ } keys %global_soname_needed);
        next unless ($warnings & WARN_DEP_AVOIDABLE);
        warning(P_('package could avoid a useless dependency if %s was not ' .
                   "linked against %s (it uses none of the library's symbols)",
                   'package could avoid a useless dependency if %s were not ' .
                   "linked against %s (they use none of the library's symbols)",
                   scalar @{$global_soname_needed{$soname}}),
                join(' ', @{$global_soname_needed{$soname}}), $soname);
    }
}

# Quit now if any missing libraries
if ($error_count >= 1) {
    my $note = g_('Note: libraries are not searched in other binary packages ' .
                  "that do not have any shlibs or symbols file.\n" .
                  'To help dpkg-shlibdeps find private libraries, you might ' .
                  'need to use -l.');
    error(P_('cannot continue due to the error above',
             'cannot continue due to the errors listed above',
             $error_count) . "\n" . $note);
}

# Open substvars file

my $substvars = Dpkg::Substvars->new();
if ($stdout) {
    $varlistfilenew = '-';
} else {
    $substvars->load($varlistfile) if -e $varlistfile;
    $substvars->filter(remove => sub { $_[0] =~ m/^\Q$varnameprefix\E:/ });

$varlistfilenew = "$varlistfile.new";
}

# Write out the shlibs substvars
my %depseen;

sub filter_deps {
    my ($dep, $field) = @_;
    # Skip dependencies on excluded packages
    foreach my $exc (@exclude) {
	return 0 if $dep =~ /^\s*\Q$exc\E\b/;
    }
    # Don't include dependencies if they are already
    # mentioned in a higher priority field
    if (not exists($depseen{$dep})) {
	$depseen{$dep} = $dependencies{$field}{$dep};
	return 1;
    } else {
	# Since dependencies can be versioned, we have to
	# verify if the dependency is stronger than the
	# previously seen one
	my $stronger;
	if ($depseen{$dep} eq $dependencies{$field}{$dep}) {
	    # If both versions are the same (possibly unversioned)
	    $stronger = 0;
	} elsif ($dependencies{$field}{$dep} eq '') {
	    $stronger = 0; # If the dep is unversioned
	} elsif ($depseen{$dep} eq '') {
	    $stronger = 1; # If the dep seen is unversioned
	} elsif (version_compare_relation($depseen{$dep}, REL_GT,
                                          $dependencies{$field}{$dep})) {
	    # The version of the dep seen is stronger...
	    $stronger = 0;
	} else {
	    $stronger = 1;
	}
	$depseen{$dep} = $dependencies{$field}{$dep} if $stronger;
	return $stronger;
    }
}

foreach my $field (reverse @depfields) {
    my $dep = '';
    if (exists $dependencies{$field} and scalar keys %{$dependencies{$field}}) {
	$dep = join ', ',
	    map {
		# Translate dependency templates into real dependencies
		my $templ = $_;
		if ($dependencies{$field}{$templ}->is_valid() and
		    $dependencies{$field}{$templ}->as_string()) {
		    $templ =~ s/#MINVER#/(>= $dependencies{$field}{$templ})/g;
		} else {
		    $templ =~ s/#MINVER#//g;
		}
		$templ =~ s/\s+/ /g;
		$templ;
	    } grep {
		filter_deps($_, $field)
	    } keys %{$dependencies{$field}};
    }
    if ($dep) {
        my $obj = deps_parse($dep);
        error(g_('invalid dependency got generated: %s'), $dep) unless defined $obj;
        $obj->sort();
        $substvars->set_as_used("$varnameprefix:$field", "$obj");
    }
}

$substvars->save($varlistfilenew);

# Replace old file by new one
if (!$stdout) {
    rename $varlistfilenew, $varlistfile
        or syserr(g_("install new varlist file '%s'"), $varlistfile);
}

##
## Functions
##

sub version {
    printf g_("Debian %s version %s.\n"), $Dpkg::PROGNAME, $Dpkg::PROGVERSION;

printf g_('
This is free software; see the GNU General Public License version 2 or
later for copying conditions. There is NO warranty.
');
}

sub usage {
    printf g_(
'Usage: %s [<option>...] <executable>|-e<executable> [<option>...]')
    . "\n\n" . g_(
"Positional options (order is significant):
  <executable>             include dependencies for <executable>,
  -e<executable>           (use -e if <executable> starts with '-')
  -d<dependency-field>     next executable(s) set shlibs:<dependency-field>.")
    . "\n\n" . g_(
"Options:
  --package=<package>      generate substvars for <package> (default is unset).
  -l<library-dir>          add directory to private shared library search list.
  -p<varname-prefix>       set <varname-prefix>:* instead of shlibs:*.
  -O[<file>]               write variable settings to stdout (or <file>).
  -L<local-shlibs-file>    shlibs override file, not debian/shlibs.local.
  -T<substvars-file>       update variables here, not debian/substvars.
  -t<type>                 set package type (default is deb).
  -x<package>              exclude package from the generated dependencies.
  -S<package-build-dir>    search needed libraries in the given
                             package build directory first.
  -I<package-build-dir>    ignore needed libraries, shlibs and symbols files
                             in the given build directory.
  -v                       enable verbose mode (can be used multiple times).
  --ignore-missing-info    don't fail if dependency information can't be found.
  --warnings=<value>       define set of active warnings (see manual page).
  --admindir=<directory>   change the administrative directory.
  -?, --help               show this help message.
      --version            show the version.")
    . "\n\n" . g_(
'Dependency fields recognized are:
  %s
'), $Dpkg::PROGNAME, join('/', @depfields);
}

sub get_min_version_from_deps {
    my ($dep, $pkg) = @_;
    if ($dep->isa('Dpkg::Deps::Simple')) {
	if (($dep->{package} eq $pkg) &&
	    defined($dep->{relation}) &&
	    (($dep->{relation} eq REL_GE) ||
	     ($dep->{relation} eq REL_GT)))
	{
	    return $dep->{version};
	}
	return;
    } else {
	my $res;
	foreach my $subdep ($dep->get_deps()) {
	    my $minver = get_min_version_from_deps($subdep, $pkg);
	    next if not defined $minver;
	    if (defined $res) {
		if (version_compare_relation($minver, REL_GT, $res)) {
		    $res = $minver;
		}
	    } else {
		$res = $minver;
	    }
	}
	return $res;
    }
}

sub update_dependency_version {
    my ($dep, $minver, $existing_only) = @_;
    return if not defined($minver);
    $minver = Dpkg::Version->new($minver);
    foreach my $subdep (split /\s*,\s*/, $dep) {
	if (exists $dependencies{$cur_field}{$subdep} and
	    defined($dependencies{$cur_field}{$subdep}))
	{
	    if ($dependencies{$cur_field}{$subdep} eq '' or $minver ne '' and
		version_compare_relation($minver, REL_GT,
				         $dependencies{$cur_field}{$subdep}))
	    {
		$dependencies{$cur_field}{$subdep} = $minver;
	    }
	} elsif (!$existing_only) {
	    $dependencies{$cur_field}{$subdep} = $minver;
	}
    }
}

sub add_shlibs_dep {
    my ($soname, $pkg, $libfile) = @_;
    my @shlibs = ($shlibslocal, $shlibsoverride);
    if ($pkg eq '') {
	# If the file is not packaged, try to find out the shlibs file in
	# the package being built where the lib has been found
	my $pkg_root = guess_pkg_root_dir($libfile);
	if (defined $pkg_root) {
	    push @shlibs, "$pkg_root/DEBIAN/shlibs";
	}
	# Fallback to other shlibs files but it shouldn't be necessary
	push @shlibs, @pkg_shlibs;
    } else {
	my $control_file = get_control_path($pkg, 'shlibs');
	push @shlibs, $control_file if defined $control_file;
    }
    push @shlibs, $shlibsdefault;
    debug(1, " Looking up shlibs dependency of $soname provided by '$pkg'");
    foreach my $file (@shlibs) {
	next if not -e $file;
	my $dep = extract_from_shlibs($soname, $file);
	if (defined($dep)) {
	    debug(1, " Found $dep in $file");
	    foreach (split(/,\s*/, $dep)) {
		# Note: the value is empty for shlibs based dependency
		# symbol based dependency will put a valid version as value
		$dependencies{$cur_field}{$_} = Dpkg::Version->new('');
	    }
	    return 1;
	}
    }
    debug(1, ' Found nothing');
    return 0;
}

sub split_soname {
    my $soname = shift;

if ($soname =~ /^(.+)\.so\.(.+)$/) {
        # Shared library with stable <name>.so.<version> format.
	return wantarray ? ($1, $2) : 1;
    } elsif ($soname =~ /^(.+)-(\d.*)\.so$/) {
        # Shared library/module with unstable <name>-<version>.so format.
	return wantarray ? ($1, $2) : 1;
    } else {
        # Something else.
	return wantarray ? () : 0;
    }
}

sub extract_from_shlibs {
    my ($soname, $shlibfile) = @_;

if (exists $shlibs_cache{$shlibfile}{$soname}) {
        return $shlibs_cache{$shlibfile}{$soname};
    }

my $shlibs_re = qr{
        ^\s*
        (?:(\S+):\s+)?              # Optional type
        (\S+)\s+                    # Library
        (\S+)                       # Version
        (?:
          \s+
          (\S.*\S)                  # Dependencies
        )?
        \s*$
    }x;

# Split soname in name/version
    my ($libname, $libversion) = split_soname($soname);
    unless (defined $libname) {
	warning(g_("can't extract name and version from library name '%s'"),
	        $soname);
        $shlibs_cache{$shlibfile}{$soname} = undef;
	return;
    }
    # Open shlibs file
    open(my $shlibs_fh, '<', $shlibfile)
        or syserr(g_("unable to open shared libs info file '%s'"), $shlibfile);
    my $dep;
    while (<$shlibs_fh>) {
	s/\s*\n$//;
	next if m/^\#/;
        ## no critic (RegularExpressions::ProhibitCaptureWithoutTest)
	if (!m/$shlibs_re/) {
	    warning(g_("shared libs info file '%s' line %d: bad line '%s'"),
	            $shlibfile, $., $_);
	    next;
	}
	my $depread = $4 // '';
	if (($libname eq $2) && ($libversion eq $3)) {
	    # Define dep and end here if the package type explicitly
	    # matches. Otherwise if the packagetype is not specified, use
	    # the dep only as a default that can be overridden by a later
	    # line
	    if (defined($1)) {
		if ($1 eq $packagetype) {
		    $dep = $depread;
		    last;
		}
	    } else {
		$dep //= $depread;
	    }
	}
    }
    close($shlibs_fh);
    $shlibs_cache{$shlibfile}{$soname} = $dep;
    return $dep;
}

sub find_symbols_file {
    my ($pkg, $soname, $libfile) = @_;
    my @files;
    if ($pkg eq '') {
	# If the file is not packaged, try to find out the symbols file in
	# the package being built where the lib has been found
	my $pkg_root = guess_pkg_root_dir($libfile);
	if (defined $pkg_root) {
	    push @files, "$pkg_root/DEBIAN/symbols";
	}
	# Fallback to other symbols files but it shouldn't be necessary
	push @files, @pkg_symbols;
    } else {
	push @files, "$Dpkg::CONFDIR/symbols/$pkg.symbols.$host_arch",
	    "$Dpkg::CONFDIR/symbols/$pkg.symbols";

state %control_file_cache;
	if (not exists $control_file_cache{$pkg}) {
	    $control_file_cache{$pkg} = get_control_path($pkg, 'symbols');
	}
	my $control_file = $control_file_cache{$pkg};
	push @files, $control_file if defined $control_file;
    }

foreach my $file (@files) {
	if (-e $file and symfile_has_soname($file, $soname)) {
	    return $file;
	}
    }
    return;
}

sub symfile_has_soname {
    my ($file, $soname) = @_;

if (exists $symfile_has_soname_cache{$file}{$soname}) {
        return $symfile_has_soname_cache{$file}{$soname};
    }

open(my $symfile_fh, '<', $file)
        or syserr(g_('cannot open file %s'), $file);
    my $result = 0;
    while (<$symfile_fh>) {
	if (/^\Q$soname\E /) {
	    $result = 1;
	    last;
	}
    }
    close($symfile_fh);
    $symfile_has_soname_cache{$file}{$soname} = $result;
    return $result;
}

# find_library ($soname, \@rpath, $format)
sub my_find_library {
    my ($lib, $rpath, $format, $execfile) = @_;

# Create real RPATH in case $ORIGIN is used
    # Note: ld.so also supports $PLATFORM and $LIB but they are
    # used in real case (yet)
    my $libdir = relative_to_pkg_root($execfile);
    my $origin;
    if (defined $libdir) {
	$origin = "/$libdir";
	$origin =~ s{/+[^/]*$}{};
    }
    my @RPATH = ();
    foreach my $path (@{$rpath}) {
	if ($path =~ /\$ORIGIN|\$\{ORIGIN\}/) {
	    if (defined $origin) {
		$path =~ s/\$ORIGIN/$origin/g;
		$path =~ s/\$\{ORIGIN\}/$origin/g;
	    } else {
		warning(g_('$ORIGIN is used in RPATH of %s and the corresponding ' .
		'directory could not be identified due to lack of DEBIAN ' .
		"sub-directory in the root of package's build tree"), $execfile);
	    }
	}
	push @RPATH, $path;
    }

# Look into the packages we're currently building in the following
    # order:
    # - package build tree of the binary which is analyzed
    # - package build tree given on the command line (option -S)
    # - other package build trees that contain either a shlibs or a
    #   symbols file
    # But ignore:
    # - package build tree given on the command line (option -I)

my @builddirs;
    my $pkg_root = guess_pkg_root_dir($execfile);
    push @builddirs, $pkg_root if defined $pkg_root;
    push @builddirs, @pkg_dir_to_search;
    push @builddirs, @pkg_root_dirs;
    my %dir_checked;
    foreach my $builddir (@builddirs) {
	next if defined($dir_checked{$builddir});
	next if ignore_pkgdir($builddir);
	my @libs = find_library($lib, \@RPATH, $format, $builddir);
	return @libs if scalar @libs;
	$dir_checked{$builddir} = 1;
    }

# Fallback in the root directory if we have not found what we were
    # looking for in the packages
    return find_library($lib, \@RPATH, $format, '');
}

my %cached_pkgmatch = ();

sub find_packages {
    my @paths = @_;

my @files;
    my $pkgmatch = {};

foreach my $path (@paths) {
	if (exists $cached_pkgmatch{$path}) {
	    $pkgmatch->{$path} = $cached_pkgmatch{$path};
	} else {
	    push @files, $path;
	    $cached_pkgmatch{$path} = ['']; # placeholder to cache misses too.
	    $pkgmatch->{$path} = [''];      # might be replaced later on
	}
    }
    return $pkgmatch unless scalar(@files);

# Child process running dpkg --search and discarding errors
    my $dpkg_fh;
    my $pid = spawn(
        exec => [ 'dpkg-query', '--search', '--', @files ],
        env => {
            LC_ALL => 'C',
        },
        to_pipe => \$dpkg_fh,
        error_to_file => '/dev/null',
    );
    while (<$dpkg_fh>) {
	chomp;
	if (m/^local diversion |^diversion by/) {
	    warning(g_('diversions involved - output may be incorrect'));
	    print { *STDERR } " $_\n"
		or syserr(g_('write diversion info to stderr'));
	} elsif (m/^([-a-z0-9+.:, ]+): (\/.*)$/) {
	    my ($pkgs, $path) = ($1, $2);
	    my $realpath = realpath($path);
	    $cached_pkgmatch{$path} = $pkgmatch->{$path} = [ split /, /, $pkgs ];
	    $cached_pkgmatch{$realpath} = $pkgmatch->{$realpath} = [ split /, /, $pkgs ];
	} else {
	    warning(g_("unknown output from dpkg --search: '%s'"), $_);
	}
    }
    close($dpkg_fh);
    wait_child($pid, nocheck => 1, cmdline => 'dpkg-query --search');

return $pkgmatch;
}

${this.title}

Code Editor : dpkg-shlibdeps