I'm afraid my gcc package is not being updated (version 4.9.3 on Xubuntu 16.04). My guess is someone else or myself might have mistakenly configured it to hold itself back, but I don't know who to release that lock.
I know it doesn't appear to be locked in the synaptic package manager interface, so it must have been done some other way.
Could you guys help me figure this one out? What are other ways to install and keep out-of-date packages?
Output of gcc -v (all that long "Configured with" line looks suspicious but I don't really understand it)
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.9/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.9.3-13ubuntu2' --with-bugurl=file:///usr/share/doc/gcc-4.9/README.Bugs --enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.9 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.9 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-vtable-verify --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.9-amd64/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.9-amd64 --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.9-amd64 --with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-objc-gc --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.9.3 (Ubuntu 4.9.3-13ubuntu2)
EDIT:
apt-mark showhold has no output (empty)
grep "^deb " /etc/apt/sources.list output:
deb http://us.archive.ubuntu.com/ubuntu/ xenial main restricted
deb http://us.archive.ubuntu.com/ubuntu/ xenial-updates main
restricted
deb http://us.archive.ubuntu.com/ubuntu/ xenial universe
deb http://us.archive.ubuntu.com/ubuntu/ xenial-updates universe
deb http://us.archive.ubuntu.com/ubuntu/ xenial multiverse
deb http://us.archive.ubuntu.com/ubuntu/ xenial-updates multiverse
deb http://us.archive.ubuntu.com/ubuntu/ xenial-backports main
restricted universe multiverse
deb http://us.archive.ubuntu.com/ubuntu/ xenial-security main
restricted
deb http://us.archive.ubuntu.com/ubuntu/ xenial-security universe
deb http://us.archive.ubuntu.com/ubuntu/ xenial-security multiverse
apt-cache policy gcc output:
gcc:
Installed: 4:5.3.1-1ubuntu1
Candidate: 4:5.3.1-1ubuntu1
Version table:
*** 4:5.3.1-1ubuntu1 500
500 http://us.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
100 /var/lib/dpkg/status
which gcc: /usr/bin/gcc
whereis gcc:
gcc: /usr/bin/gcc /usr/lib/gcc /usr/share/man/man1/gcc.1.gz
/usr/bin/gcc -v |& tail -1 (I don't get how this one contradicts the others, what's the explanation?)
gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.4)
update-alternatives --list gcc:
/usr/bin/gcc-4.9
/usr/bin/gcc-5
apt-mark showholdandgrep "^deb " /etc/apt/sources.list.apt-cache policy gcctoo?update-alternatives --list gcc