Currently, when an ELF binary in a created snap lacks a required library, snapcraft notifies the user about it; unfortunately, it is the user who has to check which package (if any) includes that/those missing library/libraries. Since it is common that the "libXXX-dev" package used during build also installs the corresponding "libXXX" package, the missing library is usually installed in the building system. This patch takes advantage of that to search each missing library in the build system and check which package contains that file, appending that information to the warning message. Here is an example of the new output: ``` Running linter: library Lint warnings: - library: usr/bin/gnome-control-center: missing dependency 'libaccountsservice.so.0' (provided by libaccountsservice0). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libcrack.so.2' (provided by libcrack2). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libdcerpc-binding.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libgnome-bluetooth-ui-3.0.so.13' (provided by libgnome-bluetooth-ui-3.0-13). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libgtop-2.0.so.11' (provided by libgtop-2.0-11). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libjansson.so.4' (provided by libjansson4). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libldb.so.2' (provided by libldb2). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libmm-glib.so.0' (provided by libmm-glib0). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libndr-krb5pac.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libndr-nbt.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libndr-standard.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libndr.so.2' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libnm.so.0' (provided by libnm0). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libpwquality.so.1' (provided by libpwquality1). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libsamba-credentials.so.1' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libsamba-errors.so.1' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libsamba-hostconfig.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libsamba-util.so.0' (provided by libwbclient0). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libsamdb.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libsmbclient.so.0' (provided by libsmbclient). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libsmbconf.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libtalloc.so.2' (provided by libtalloc2). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libtevent-util.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libtevent.so.0' (provided by libtevent0). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libudisks2.so.0' (provided by libudisks2-0). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libupower-glib.so.3' (provided by libupower-glib3). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libwbclient.so.0' (provided by libwbclient0). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libCHARSET3.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libMESSAGING-SEND.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libaddns.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libasn1-samba4.so.8' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libasn1util.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libauthkrb5.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libcli-cldap.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libcli-ldap-common.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libcli-nbt.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libcli-smb-common.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libcliauth.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libclidns.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libcom_err-samba4.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libcommon-auth.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libdbwrap.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libdcerpc-samba.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libflag-mapping.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libgenrand.so.0' (provided by libwbclient0). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libgensec.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libgse.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libgssapi-samba4.so.2' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libhcrypto-samba4.so.5' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libheimbase-samba4.so.1' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libhx509-samba4.so.5' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libinterfaces.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libiov-buf.so.0' (provided by libwbclient0). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libkrb5-samba4.so.26' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libkrb5samba.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libldbsamba.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'liblibcli-lsa3.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'liblibsmb.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libmessages-dgm.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libmessages-util.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libmsghdr.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libmsrpc3.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libndr-samba.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libreplace.so.0' (provided by libwbclient0). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libroken-samba4.so.19' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libsamba-debug.so.0' (provided by libwbclient0). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libsamba-modules.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libsamba-security.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libsamba-sockets.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libsamba3-util.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libsamdb-common.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libsecrets3.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libserver-id-db.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libserver-role.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libsmb-transport.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libsmbd-shim.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libsocket-blocking.so.0' (provided by libwbclient0). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libsys-rw.so.0' (provided by libwbclient0). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libtalloc-report-printf.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libtdb-wrap.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libtime-basic.so.0' (provided by libwbclient0). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libutil-reg.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libutil-setid.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libutil-tdb.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libwinbind-client.so.0' (provided by libwbclient0). (https://snapcraft.io/docs/linters-library) - library: usr/bin/gnome-control-center: missing dependency 'libwind-samba4.so.0' (provided by samba-libs). (https://snapcraft.io/docs/linters-library) - library: usr/lib/x86_64-linux-gnu/libnma-gtk4.so.0.0.0: missing dependency 'libnm.so.0' (provided by libnm0). (https://snapcraft.io/docs/linters-library) - library: usr/lib/x86_64-linux-gnu/libnma.so.0.0.0: missing dependency 'libnm.so.0' (provided by libnm0). (https://snapcraft.io/docs/linters-library) - library: usr/libexec/gnome-control-center-goa-helper: missing dependency 'libgoa-backend-1.0.so.1' (provided by libgoa-backend-1.0-1). (https://snapcraft.io/docs/linters-library) - library: usr/libexec/gnome-control-center-goa-helper: missing dependency 'libsnapd-glib.so.1' (provided by libsnapd-glib1). (https://snapcraft.io/docs/linters-library) ``` - [x] Have you followed the [guidelines for contributing](https://github.com/snapcore/snapcraft/blob/master/CONTRIBUTING.md)? - [x] Have you signed the [CLA](http://www.ubuntu.com/legal/contributors/)? - [x] Have you successfully run `make lint`? - [x] Have you successfully run `pytest tests/unit`? -----