Re: [Gm2] Report: Building gm2-1.0.4 on FreeBSD 9.0-RELEASE i386

[Gaius Mulley]

Martin Hofmann <address@hidden> writes:

> Hi there,
>
> I'm new to this list, so first of all: thank you for the great work so far!
>
> Using the tarball
>
>     gcc-4.1.2+gm2-1.0.4.tar.gz
>
> I have managed to build gm2 on a 32-bit FreeBSD 9.0 system, but only
> after some tweaking. Here is what I've done, hopefully this can help
> others.
>
>
> 1  Environment
> --------------
>
> - Make python accessible in /usr/bin: By default, the python interpreter
>   is in /usr/local/bin, but some scripts in the gm2 distribution
>   reference it in its first line as
>
>     #!/usr/bin/python
>
>   (I'd prefer this to be as follows ...)
>
>     #!python

Hi,

thanks for the feedback and fixes.  I wonder whether:

#!/usr/bin/env python

might be slightly better.  But sure all the #!/usr/bin/python
need to be changed.

>   This is easy to circumvent with a symlink:
>
>     sudo ln -s /usr/local/bin/python /usr/bin/python
>
> - Force using gmake instead of BSD make: I tried to shell-alias make,
>   and to have MAKE set in the environment, but this seems not to be
>   enough. So I force all Makefiles and scripts onto GNU gmake with
>   yet another symlink:
>
>     ln -s /usr/local/bin/gmake $HOME/bin/make
>     PATH=$HOME/bin:$PATH

ok probably this can be fixed by using $(MAKE) in all the Makefiles
and then setting the environment.

> 2  Nasty bug in freebsd-spec.h
> ------------------------------
>
> In gcc-4.1.2+gm2-cvs-latest/gcc/config/freebsd-spec.h, there is a
> missing "else" in line 58:
>
>            if (FBSD_MAJOR == 7)      \
>
> This line should read:
>
>            else if (FBSD_MAJOR == 7)      \

ouch - ok I'll add a patch to gcc-4.1.2 - thanks!

> You get all kinds of horrific errors on FreeBSD 8 or 9 with the
> missing else, because the predefined __FreeBSD__ symbol will then
> default to a value of 0 in tests like #if __FreeBSD__ >= 4 ...
>
> This seems to be an old bug, but somehow it persisted:
>
> http://lists.freebsd.org/pipermail/freebsd-questions/2007-October/160731.html
>
>
> 3  Use of cut(1)
> ----------------
>
> Sometimes BSD cut(1) doesn't really cut it:
>
>     cut -f1 -d' '
>
> will *not* extract the first whitespace-delimited field of a line. I
> use awk(1) instead:
>
>     awk '{ print $1 }'
>
>
> So change gcc-4.1.2+gm2-cvs-latest/gcc/gm2/tools-src/makeversion line
> 145 from:
>
>     THEDATE=`head -n ${pos} ${SRCDIR}/gm2/ChangeLog | grep ^2 | head
> -1 
> | cut -f1 -d' ' | cut -f1`
>
> into this:
>
>     THEDATE=`head -n ${pos} ${SRCDIR}/gm2/ChangeLog | grep ^2 | head
> -1 
> | awk '{print $1}' | cut -f1`
>
>
>
> That's it so far (hope I've not forgotten something). The resulting
> gm2 seems to work (I did not "make check-gm2" yet).

also thank you for the awk fix - will change these as well.  It will be
interesting to hear how the make check-gm2 progresses,

regards,
Gaius