[Libguestfs] [PATCH] appliance: Fix searching for shared libraries on usr-merged Debian systems

[Hilko Bengen]

If /lib is a symlink to usr/lib, paths to shared libraries as
determined by ld.so may differ from dpkg's file lists.

We turn the filename search pattern into a glob expression by
prefixing it with a '*', so the required packages are found again:

$ dpkg -S /lib/x86_64-linux-gnu/libpcre2-8.so.0
dpkg-query: no path found matching pattern /lib/x86_64-linux-gnu/libpcre2-8.so.0
$ dpkg -S */lib/x86_64-linux-gnu/libpcre2-8.so.0
libpcre2-8-0:amd64: /usr/lib/x86_64-linux-gnu/libpcre2-8.so.0
---
 appliance/Makefile.am | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/appliance/Makefile.am b/appliance/Makefile.am
index a213e12be4..6dd1df75a6 100644
--- a/appliance/Makefile.am
+++ b/appliance/Makefile.am
@@ -84,7 +84,7 @@ if HAVE_RPM
 QUERY_FILES_CMD := xargs rpm -qf --qf '%{name}\n'
 endif
 if HAVE_DPKG
-QUERY_FILES_CMD := xargs dpkg -S | cut -d: -f1
+QUERY_FILES_CMD := sed -e 's,^/,\*/,' | xargs dpkg -S | cut -d: -f1
 endif
 if HAVE_PACMAN
 QUERY_FILES_CMD := xargs pacman -Qo | sed -r 's/.* is owned by ([^ ]+) .*/\1/'
-- 
2.32.0.rc0