[Bug 1300211] Re: Can't install both gcc-multilib and gcc-arm-linux-gnueabihf

[Matthias Klose]

mcclary states that having /usr/include in the header search path
doesn't prevent the inclusion of wrong header files.  He then describes
a system how to layout files to install multiple native and cross
compilers, and how to select defaults.  He doesn't talk about the
include paths for these setups at all, therefore not addressing the
problem that the cross compilers pick up the wrong header files.

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Title:
  Can't install both gcc-multilib and gcc-arm-linux-gnueabihf

Status in gcc-defaults package in Ubuntu:
  New

Bug description:
  Problem is on Ubuntu 14.04.  Earlier versions of Ubuntu don't seem to
  have this issue and the two packages can happily coexist.

  When I run e.g.,
  apt-get install gcc-multilib, it uninstalls the ARM compilers.

  root at rufus-linux:/# apt-get install gcc-multilib 
  Reading package lists... Done
  Building dependency tree       
  Reading state information... Done
  The following packages were automatically installed and are no longer required:
    binutils-arm-linux-gnueabihf cpp-4.8-arm-linux-gnueabihf cpp-arm-linux-gnueabihf gcc-4.8-arm-linux-gnueabihf-base
    libasan0-armhf-cross libatomic1-armhf-cross libc6-armel-armhf-cross libc6-armhf-cross libc6-dev-armel-armhf-cross
    libc6-dev-armhf-cross libgcc-4.8-dev-armhf-cross libgcc1-armhf-cross libgomp1-armhf-cross libsfasan0-armhf-cross
    libsfatomic1-armhf-cross libsfgcc-4.8-dev-armhf-cross libsfgcc1-armhf-cross libsfgomp1-armhf-cross
    libsfstdc++-4.8-dev-armhf-cross libsfstdc++6-armhf-cross libstdc++-4.8-dev-armhf-cross libstdc++6-armhf-cross
    linux-libc-dev-armhf-cross
  Use 'apt-get autoremove' to remove them.
  The following packages will be REMOVED
    g++-4.8-arm-linux-gnueabihf g++-4.8-multilib-arm-linux-gnueabihf g++-arm-linux-gnueabihf
    gcc-4.8-arm-linux-gnueabihf gcc-4.8-multilib-arm-linux-gnueabihf gcc-arm-linux-gnueabihf
  The following NEW packages will be installed
    gcc-multilib
  0 to upgrade, 1 to newly install, 6 to remove and 0 not to upgrade.
  Need to get 0 B/1,024 B of archives.
  After this operation, 31.3 MB disk space will be freed.

  Similarly, when I install the arm compiler, it uninstalls gcc-multilib
  root at rufus-linux:/# apt-get install gcc-arm-linux-gnueabihf
  Reading package lists... Done
  Building dependency tree       
  Reading state information... Done
  The following packages were automatically installed and are no longer required:
    libsfstdc++-4.8-dev-armhf-cross libsfstdc++6-armhf-cross libstdc++-4.8-dev-armhf-cross libstdc++6-armhf-cross
  Use 'apt-get autoremove' to remove them.
  The following extra packages will be installed:
    gcc-4.8-arm-linux-gnueabihf gcc-4.8-multilib-arm-linux-gnueabihf
  Suggested packages:
    gcc-4.8-doc gcc-4.8-locales libgcc1-dbg-armhf-cross libgomp1-dbg-armhf-cross libitm1-dbg-armhf-cross
    libatomic1-dbg-armhf-cross libasan0-dbg-armhf-cross libtsan0-dbg-armhf-cross libbacktrace1-dbg-armhf-cross
    libquadmath-dbg-armhf-cross manpages-dev automake1.9 gdb-arm-linux-gnueabihf gcc-doc
  The following packages will be REMOVED
    gcc-multilib
  The following NEW packages will be installed
    gcc-4.8-arm-linux-gnueabihf gcc-4.8-multilib-arm-linux-gnueabihf gcc-arm-linux-gnueabihf
  0 to upgrade, 3 to newly install, 1 to remove and 0 not to upgrade.
  Need to get 0 B/5,074 kB of archives.
  After this operation, 15.7 MB of additional disk space will be used.

  Note, this is a test ubuntu disk image created using pbuilder.

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