Problem Building mcf5206elite BSP under Cygwin - Workaround Found

[Ralf Corsepius]

On Wed, 2003-11-05 at 04:38, Scott J wrote:
> ------ 'Steve Strobel' said the following on 2003-11-01 0:53 ------:
> 
> > I just got a successful build!!!  (OK, maybe it isn't that exciting, but after you spend days beating your head against the wall...)
> > 
> > I first verified that the "build_alias" error occurred at different places in the build process at different times, even when opening a new cygwin console and running EXACTLY the same sequence of commands each time.  (In other words, something in the environment was inconsistent).  On a hunch, I tried disabling my virus scanner's "file system real time protection" (it is Symantec AntiVirus Corporate Edition V8.1.0.825) and it built successfully.  I still don't know why disabling the virus checker made a difference, but at least I have a way to get it to build now.
> > 
> > I have tried leaving the virus checker enabled but excluding the cygwin directory tree;  that doesn't seem to work.  So the only workaround I know of at the moment is turning the real time protection completely off when rebuilding RTEMS.  It doesn't report finding any viruses (no false positives as far as I can tell).
> 
>      I also met the build_alias error these days but my experience was 
> different from Steve's. My problem and solution had nothing to do with 
> the anti-virus software. My host is Windows 2K Pro SP4 and cygwin. All 
> of my drives are FAT32 format. I don't install any anti-virus software 
> or firewall. Everytime I logon to Windows as Administrator.
> 
>      First I used "configure --prefix=/usr/rtems --enable-rtems-inlines 
> --disable-posix --disable-itron --disable-networking --disable-cxx 
> --disable-multiprocessing --enable-tests --disable-rdbg --enable-docs"
> I got the build_alias error.
> 
>      Then I changed to "configure  --prefix=/usr/rtems --disable-posix 
> --disable-itron --disable-networking --enable-tests --target=i386-rtems"
> the configuration and make worked well.
> 
>      You may notice that the first configure options and the second ones 
> are same on the whole.
No, they are basically different.

The first one triggers a native built, while the second one triggers a
cross built -> i386-rtems (--target=i386-rtems).


>  Options such as --enable-rtems_inlines, 
> --disable-cxx and --disable_rdbg are default settings. I thought the 
> first command I used should have the same effect as the second one did 
> but .... :(
Sorry, I don't understand what you are trying to say.

IMO, as others also already pointed out, the problems you experience
with build_alias originate from using a broken shell.

At least some (older) versions of cygwin (I don't know if this applies
to current Cygwin), ship ash as /bin/sh, because it is supposed to be
leaner than other shells. Unfortunately this shell has proven to be 
stone-dead broken and unusable for more than primitive shell scripts.

One work-around is to install bash as /bin/sh, ie. to copy /bin/bash.exe
to /bin/sh.exe.

Ralf


Ralf