[Bug 1211] Wrong file locations prevent sucessful build for PowerPC + workaround

Ralf Corsepius ralf.corsepius at rtems.org
Sat Jan 6 11:30:54 UTC 2007

On Sat, 2007-01-06 at 01:30 -0800, avy st wrote:
> Ralf,
>   I think that I'm beginning to rn down to the cause of this, and It
> might be an incompatibility between the latest standard cygwin
> environment (which I have) and RTEMS auto configuration files.
As I repeatedly said before (This really is an FAQ):

You need to use an rtems-patched automake or automake >= 1.10 to be run
on the rtems sources - Vanilla automake-1.9 is NOT sufficient.

[Background: We need a patch applied to automake, which had been
incorporated into automake's CVS for more than 2 years, but there had
not been a release since then! 
automake-1.10 finally has this patch integrated.]

> The latest standard Cygwin has all automake versions installed, UP TO
> AND INCLUDING 1.10, and automake is a script that selects
> automake-1.10, unless the build scripts EXPLICITLY selects a different
> version.  see the attached file, which  first lists all automakes
> available in /bin, and than the 'automake' script.
> So, I have automake-1.10 installed, ant it is the default automake,
> and that's what we see when I run '$ automake --version'.  HOWEVER,
> D:\BuildGccCygwin\source\rtems-\c\src\lib\libcpu\powerpc
> \configure.ac, line 12 says:
>         AM_INIT_AUTOMAKE([no-define foreign subdir-objects 1.9])
> requiring automake-1.9, which resolves to Cygwin vanila 1.96.  
Not quite. The AM_INIT_AUTOMAKE line above means this configuration
needs at least automake-1.9. It doesn't mean this configure script needs
exactly automake-1.9.

In later versions of RTEMS (rtems-cvs), this had been changed to 1.10,
so you will need automake-1.10.

We could not change this earlier, because the snapshot you are using
predates automake-1.10, and had required you to use a patched version of

You apparently missed this and were using vanilla automake-1.9 instead.

> Am I right?
c.f. above.

> I'm not re-opening the bug, but I think that since Cygwin now have
> automake-1.10, RTEMS build should run on it!


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