bootstrap is slow and issues many warnings

[Chris Johns]

R. Diez wrote:
> Hi all:
>
> I am new to RTEMS. I am building the git head version on Ubuntu 12.04. I have written my own script to download, build and install prerequisites autoconf 2.69 and automake 1.14.
>

I have ...

$ ~/development/rtems/4.11/bin/automake --version
automake (GNU automake) 1.12.6

What happens if you try this version ?

Chris

> When I run the 'bootstrap' script, it takes a long time and I get loads of warnings:
>
> ./testsuites/sptests
> sp27a/Makefile.am:3: warning: source file '../sp27/init.c' is in a subdirectory,
> sp27a/Makefile.am:3: but option 'subdir-objects' is disabled
> automake: warning: possible forward-incompatibility.
> automake: At least a source file is in a subdirectory, but the 'subdir-objects'
> automake: automake option hasn't been enabled.  For now, the corresponding output
> automake: object file(s) will be placed in the top-level directory.  However,
> automake: this behaviour will change in future Automake versions: they will
> automake: unconditionally cause object files to be placed in the same subdirectory
> automake: of the corresponding sources.
> automake: You are advised to start using 'subdir-objects' option throughout your
> automake: project, to avoid future incompatibilities.
> sp53/Makefile.am:3: warning: source file '../sp52/init.c' is in a subdirectory,
> sp53/Makefile.am:3: but option 'subdir-objects' is disabled
> sp66/Makefile.am:3: warning: source file '../sp65/init.c' is in a subdirectory,
> ...
> ada_user/Makefile.am: warning: Oops!
> ada_user/Makefile.am:     It appears this file (or files included by it) are triggering
> ada_user/Makefile.am:     an undocumented, soon-to-be-removed automake hack.
> ada_user/Makefile.am:     Future automake versions will no longer place in the builddir
> ada_user/Makefile.am:     (rather than in the srcdir) the generated '.info' files that
> ada_user/Makefile.am:     appear to be cleaned, by e.g. being listed in CLEANFILES or
> ada_user/Makefile.am:     DISTCLEANFILES.
> ada_user/Makefile.am:     If you want your '.info' files to be placed in the builddir
> ada_user/Makefile.am:     rather than in the srcdir, you have to use the shiny new
> ada_user/Makefile.am:     'info-in-builddir' automake option.
> ...
>
> Those warnings are repeated many times during the bootstrap phase.
>
> In the end, the 'bootstrap' script finishes without errors and RTEMS builds fine.
>
> Is there any way to get rid of those warnings? Is there a reason why the bootstrap phase takes so long?
>
> Unfortunately, my autotools knowledge is rather limited. I could try the latest released version of RTEMS, but I think support for ARM Cortex-M3 processors was not there yet, was it?
>
> Thanks,
>    rdiez
>
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