From mint-bounce@lists.fishpool.fi  Thu Jan  7 08:33:58 2010
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Message-ID: <4B45E231.6050006@freesbee.fr>
Date: Thu, 07 Jan 2010 14:31:29 +0100
From: =?ISO-8859-1?Q?Vincent_Rivi=E8re?= <vincent.riviere@freesbee.fr>
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To: MiNT Mailing List <mint@lists.fishpool.fi>
Subject: Re: [MiNT] trouble with mintlib + gcc 4.4.2
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Miro Kropacek a écrit :
> ./rpcgen `gcc -print-file-name=cpp | sed -e "s,/cpp$,," -e "s,^cpp$,," 
> -e "s,^..*,-Y &,"` -h bootparam_prot.x -o bootparam_prot.T
> cannot find any C preprocessor (cpp)

The culprit is not gcc 4.4.2, it is... you, of course :-)
Because you have installed gcc in /usr/local instead of /usr.

rpcgen is stupid and does not look for cpp in the PATH.
Instead it searches it in the following directories:
- /usr/bin
- /usr/ccs/lib
- The directory specified by the -Y argument

See the rpcgen sources, in function find_cpp():
http://www.atariforge.net/cgi-bin/cvsweb/mintlib/sunrpc/rpc_main.c?rev=1.3&content-type=text/x-cvsweb-markup

The gcc -print-file-name command line you hit seem bogus to me and 
probably turns into an empty option in any case. So it works only if gcc 
is installed in /usr.

As rpcgen is a standard tool we should avoid to change its behaviour.

I propose the following change:
In mintlib/sunrpc/Makefile, replace the rpcgen-cmd variable by:

rpcgen-cmd = $(srcdir)/rpcgen -Y `which cpp | sed -e "s,/cpp$,,"`

If it works, we should commit it, as it allows to compile the MiNTLib 
with gcc (and cpp) installed in any directory.

-- 
Vincent Rivière