Successful Crosstool-NG run but have remarks

[Dima <dima at minignu dot minidns dot net>]

Hi.
  A successfull Crosstool-NG build (i686 -> arm-unknown-eabi) was run by me.
Thanks very much for the tool!

But I have several remarks, in order to inform on things that did not go smoothly:

1. It was a build for a bare-metal box, thus newlib's 'libgloss' was
   disabled (i.e. no system calls, thus gcc is not able to produce
   executables for now).
   The Crosstool-NG stages 'libelf' and 'binutils for target' are thus
   can not be built, but I did not find a better way to cancel them than
   editing directly the 'steps.mk'

    --- userland/lib/ct-ng.1.18.0/steps.mk.orig 2013-03-26 23:45:20.000000000 +0200
    +++ userland/lib/ct-ng.1.18.0/steps.mk 2013-03-26 23:45:38.000000000 +0200
    @@ -30,8 +30,6 @@
                 libc                     \
                 cc_for_build             \
                 cc_for_host              \
    -            libelf_for_target        \
    -            binutils_for_target      \
                 debug                    \
                 test_suite               \
                 finish                   \

    I did not find a way to configure this behaviour via a command line of 'ct-ng'.
    
    By the way 'libelf' could be built, but the deficiencies of its
    'configure.in' file or maybe of Autoconf itself do not allow. There
    are plenty of places in its 'configure.in' file where the ability of
    compiler to build executables is checked (AC_PROG_CC, but surprisingly
    AC_PROG_CPP, AC_HEADER_STDC, AC_CHECK_HEADERS, AC_TRY_COMPILE try to
    link too). But linking is not needed for the building of 'libelf' ...

2. I have built the cross tools on a RHEL 4.7 (i686) server.
   Surprisingly, the 'configure' of 'ct-ng' went ok,
   requiring me only to put a recent versions of 'bash', 'libtool', 'automake'
   and 'autoconf' on the PATH. But lately, when I did 'make', it did not
   succeed several times until I have installed a recent versions of GNU
   'bison', 'm4', 'tar' and additionally put a link 'gm4' to the new
   'm4'.

3. 'ltrace' and 'strace' were not built, probably for good
   reasons. 'strace' complained that it does't support eabi of target platform.

Thanks, regards,
  Dima.

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