Package: libmpx2 Version: 7.2.0-19 Severity: minor File: /usr/lib/x86_64-linux-gnu/libmpxwrappers.so.2.0.1 User: debian-qa@lists.debian.org Usertags: undefined-symbol adequate libmpxwrappers.so needs to link with -lmpx, see the output of adequate, symtree and objdump below. I detected this on amd64 but the Debian build log scanner also detected dpkg-buildpackage complaining about it on i386, see the w3m/getbuildlog output below. I filed this bug at severity minor since I'm guessing that any code using libmpxwrappers.so also already uses libmpx.so, or that there is no code using libmpxwrappers.so. In addition, the gcc-7 build logs indicate underlinking in these other libraries: libgphobos.so libgo.so libhsail-rt.so liblsan.so This bug report brought to you by adequate: http://bonedaddy.net/pabs3/log/2013/02/23/inadequate-software/ $ adequate libmpx2 libmpx2:amd64: undefined-symbol /usr/lib/x86_64-linux-gnu/libmpxwrappers.so.2.0.1 => get_bd $ man adequate | grep -A4 undefined-symbol undefined-symbol The symbol has not been found in the libraries linked with the binary. Either the binary either needs to be linked with an additional shared library, or the dependency on the shared library package that provides this symbol is too weak. References: Debian Policy §3.5, §8.6, §10.2. $ lddtree /usr/lib/x86_64-linux-gnu/libmpxwrappers.so.2.0.1 libmpxwrappers.so.2.0.1 => /usr/lib/x86_64-linux-gnu/libmpxwrappers.so.2.0.1 (interpreter => none) libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 ld-linux-x86-64.so.2 => /lib/x86_64-linux-gnu/ld-linux-x86-64.so.2 $ symtree /usr/lib/x86_64-linux-gnu/libmpxwrappers.so.2.0.1 /usr/lib/x86_64-linux-gnu/libmpxwrappers.so.2.0.1 libc.so.6 => realloc,__assert_fail,mmap,calloc,strlen,memset,strnlen,memcpy,memcpy,malloc,strcat,strncat,__cxa_finalize,memmove WEAK => _ITM_deregisterTMCloneTable,__gmon_start__,_ITM_registerTMCloneTable UNRESOLVED => get_bd $ objdump -T /usr/lib/x86_64-linux-gnu/libmpx.so.2 | grep -E "($(symtree /usr/lib/x86_64-linux-gnu/libmpxwrappers.so.2.0.1 | sed -n 's/ UNRESOLVED => //p' | tr , '|'))$" 00000000000015f0 g DF .text 0000000000000008 LIBMPX_2.0 get_bd $ w3m -dump https://qa.debian.org/bls/packages/g/gcc-7.html | grep -A2 symbol • W shlibs-symbol-not-found (alpha, amd64, arm64, armel, armhf, hurd-i386, i386, m68k, mips, mips64el, mipsel, powerpc, powerpcspe, ppc64, ppc64el, s390x, x32) $ w3m -dump https://qa.debian.org/bls/bytag/W-shlibs-symbol-not-found.html | grep -A12 description description The build logs contains a like like dpkg-shlibdeps: warning: symbol NAME used by BINARY found in none of the libraries. Possible reasons: • A library not linked with a library needed. While this can sometimes make sense in order to allow the using binary to decide which of multiple available implementations to use, it means that dependency information might be incorrect, optimisations like prelinking might fail and stuff like that. $ chronic getbuildlog gcc-7 last $ grep 'dpkg-shlibdeps: warning: symbol .* used by .* found in none of the libraries' *.log | grep mpx gcc-7_7.2.0-19_amd64.log:dpkg-shlibdeps: warning: symbol get_bd used by debian/libmpx2/usr/lib/x86_64-linux-gnu/libmpxwrappers.so.2.0.1 found in none of the libraries gcc-7_7.2.0-19_amd64.log:dpkg-shlibdeps: warning: symbol get_bd used by debian/lib32mpx2/usr/lib32/libmpxwrappers.so.2.0.1 found in none of the libraries gcc-7_7.2.0-19_i386.log:dpkg-shlibdeps: warning: symbol get_bd used by debian/libmpx2/usr/lib/i386-linux-gnu/libmpxwrappers.so.2.0.1 found in none of the libraries gcc-7_7.2.0-19_i386.log:dpkg-shlibdeps: warning: symbol get_bd used by debian/lib64mpx2/usr/lib64/libmpxwrappers.so.2.0.1 found in none of the libraries -- System Information: Debian Release: buster/sid APT prefers testing-debug APT policy: (900, 'testing-debug'), (900, 'testing'), (800, 'unstable-debug'), (800, 'unstable'), (790, 'buildd-unstable'), (700, 'experimental-debug'), (700, 'experimental'), (690, 'buildd-experimental') Architecture: amd64 (x86_64) Kernel: Linux 4.14.0-3-amd64 (SMP w/4 CPU cores) Locale: LANG=en_AU.utf8, LC_CTYPE=en_AU.utf8 (charmap=UTF-8), LANGUAGE=en_AU.utf8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages libmpx2:amd64 depends on: ii gcc-7-base 7.2.0-19 ii libc6 2.26-2 libmpx2:amd64 recommends no packages. libmpx2:amd64 suggests no packages. -- no debconf information -- bye, pabs https://wiki.debian.org/PaulWise
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