[RTEMS Project] #2724: Compiling GCC 4.4.7 for rtems 4.10 branch fails when compiled with newer GCC

[RTEMS trac]

#2724: Compiling GCC 4.4.7 for rtems 4.10 branch fails when compiled with newer
GCC
----------------------+--------------------------------------
 Reporter:  burrusse  |      Owner:  chrisj
     Type:  defect    |     Status:  new
 Priority:  normal    |  Milestone:  4.10.3
Component:  RSB       |    Version:  4.10
 Severity:  normal    |   Keywords:  GCC, RSB, MSYS2, Windows
----------------------+--------------------------------------
 Newer versions of GCC have problems compiling older GCC.  Specifically
 Version 5.3.0 from MSYS2 under windows 7 could not compile 4.4.7. Example
 errors are:
 ../../gcc-4.4.7/gcc/toplev.c:536:1: error: redefinition of 'floor_log2'
 and:
 ../../gcc/cp/cfns.gperf:84:1: error: 'gnu_inline' attribute present on
 'libc_name_p'

 The patches are discussed here: [https://gcc.gnu.org/ml/gcc-
 patches/2009-06/msg01249.html]  and here: [https://gcc.gnu.org/ml/gcc-
 patches/2015-08/msg00375.html]

 The second error is in gdb and is specific to compiling under windows.  An
 example of the error is:
 C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/5.3.0/../../../../lib/libncurses.a(lib_tputs.o):(.text+0x8b0):
 multiple definition of `tputs'

 libgdb.a(windows-
 termcap.o):C:\opt\rtems\rsb\rtems\build\mrg7xwm1\build\gdb/../../gdb-7.3.1/gdb
 /windows-termcap.c:55: first defined here

 The problem and solution is discussed here:
 [http://bitthunder.org/misc/2014/07/01/build-arm-gcc-toolchain-for-
 windows.html]

 The Solution patches specifically adjusted to rtems 4.10 and creation
 under the rsb are attached to an email here:
 [https://lists.rtems.org/pipermail/devel/2016-May/015127.html]

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Ticket URL: <http://devel.rtems.org/ticket/2724>
RTEMS Project <http://www.rtems.org/>
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