Q: how to sometimes forcebly invoke cc1 thru gcc even without any input files?

[Basile STARYNKEVITCH]

Hello All

On the MELT branch, I need sometimes that cc1 be run even if there is no 
input files. This is an unusual mode, but sometimes needed (This 
actually is needed to have MELT lisp files translated into C; for 
reasons not explained here, this is a special mode of my ./cc1 which 
does that; both MELT lisp input and generated C output are specified 
thru special -f flags).

So I would like that my gcc command (and hence the installed gcc by the 
make install target) runs
    cc1 -fbasilys=translatefile \
    -fbasilys-arg=ana-base.bysl -fbasilys-secondarg=ana-base.c
when gcc is invoked as
    gcc -fbasilys=translatefile  \
    -fbasilys-arg=ana-base.bysl -fbasilys-secondarg=ana-base.c

I could definitely afford a special option, e.g. -fforce-cc1, to be 
given to gcc, eg
    gcc -fforce-cc1 -fbasilys=translatefile  \
    -fbasilys-arg=ana-base.bysl -fbasilys-secondarg=ana-base.c

The current MELT gcc/Makefile.in just runs cc1 in that case, but I would 
prefer that the advanced MELT user avoid running cc1 directly and use 
gcc instead.

What is the best way to achieve that? Where should I patch my gcc/gcc.c 
file? Does some equivalent of -fforce-cc1 (as a flag to gcc) which force 
the cc1 to be run already exist?

BTW, I don't understand yet any details regarding spec files.

Regards

PS. The MELT branch has an incomplete doc/melt.texi file.
-- 
Basile STARYNKEVITCH         http://starynkevitch.net/Basile/
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