[Buildroot] [PATCHv2 00/14] Toolchain updates and improvements

[Thomas Petazzoni]

Hello,

Here is a set of updates/improvements to the internal toolchain
backend (with some impacts on the external toolchain one). Mainly it:

 * Allows to build the toolchain with only two passes of gcc build as
   opposed to three. Of course, this is only possible in the
   appropriate situations. This patch had already been posted
   previously to the list, and was rebased on top of current master.

 * Fixes Fortran and Objective-C support, moves the C++ option close
   to the one for Fortran and Objective-C.

 * Adds support for glibc, in addition to eglibc. Note that as
   suggested by Arnout, I'm proposing a single package to handle both
   libraries.

 * Refactors the Stack Smashing Protection support.

 * Refactors the Mudflap support in the internal toolchain backend, by
   providing a Config.in option to enable it. It is now disabled by
   default.

 * Update the Linaro ARM and AArchr64 toolchains.

 * Makes a small number of related cleanups.

Changes since v1:

 * Use psmisc --disable-harden-flags only when BR2_TOOLCHAIN_HAS_SSP
   is false, as suggested by Arnout.

 * Simplify the mudflap stuff by only providing an option in the
   internal gcc backend to enable or disable it. We no longer provide
   a global "Build options" to add -fmudflap when building all
   packages as it is too complicated and probably not that useful.

 * Add updates to Linaro toolchains.

Thomas

Thomas Petazzoni (14):
  package/Makefile.in: fix incorrect comment
  eglibc: libstdc++ is not part of the C library
  toolchain-internal: skip gcc-intermediate when possible
  gcc: fix Fortran support
  gcc: fix Objective-C support
  gcc: move C++ support option next to Fortran/Objective-C
  toolchain: add support for glibc
  gcc/gcc-final: use the common HOST_GCC_CONFIGURE_SYMLINK macro
  gcc: force symlink creation
  toolchain: refactor Stack Smashing Protection support
  toolchain: move elf2flt option inclusion to
    toolchain-buildroot/Config.in
  gcc: provide option to enable mudflap support
  toolchain: update Linaro ARM external toolchains
  toolchain: update Linaro AArch64 external toolchains

 Config.in                                    | 17 +++++++
 package/Makefile.in                          |  5 +-
 package/gcc/Config.in.host                   | 55 ++++++++++++++++++---
 package/gcc/gcc-final/gcc-final.mk           | 31 ++++++++----
 package/gcc/gcc-initial/gcc-initial.mk       |  8 ++++
 package/gcc/gcc.mk                           | 26 ++++------
 package/{eglibc/eglibc.mk => glibc/glibc.mk} | 70 +++++++++++++++------------
 package/psmisc/psmisc.mk                     |  4 +-
 package/uclibc/Config.in                     | 11 +++++
 package/uclibc/uclibc.mk                     |  5 +-
 toolchain/Config.in                          | 11 ++++-
 toolchain/helpers.mk                         |  3 +-
 toolchain/toolchain-buildroot/Config.in      | 25 +++++++++-
 toolchain/toolchain-buildroot/Config.in.2    | 31 ------------
 toolchain/toolchain-common.in                |  3 ++
 toolchain/toolchain-external/Config.in       | 72 ++++++++++++++++------------
 toolchain/toolchain-external/ext-tool.mk     | 24 +++++-----
 17 files changed, 252 insertions(+), 149 deletions(-)
 rename package/{eglibc/eglibc.mk => glibc/glibc.mk} (58%)
 delete mode 100644 toolchain/toolchain-buildroot/Config.in.2

-- 
1.8.1.2