Date: Thu, 25 Jul 1996 16:20:04 -0700 (PDT) From: "Andrew L. Moore" <alm@woops.slewsys.org> To: freebsd-bugs Subject: Re: ports/1416: cflow(1) doesn't parse GNU C __attribute__ syntax Message-ID: <199607252320.QAA09632@freefall.freebsd.org>
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The following reply was made to PR ports/1416; it has been noted by GNATS.
From: "Andrew L. Moore" <alm@woops.slewsys.org>
To: Bill Fenner <fenner@parc.xerox.com>
Cc: FreeBSD-gnats-submit@freebsd.org
Subject: Re: ports/1416: cflow(1) doesn't parse GNU C __attribute__ syntax
Date: Thu, 25 Jul 1996 16:16:41 -0700
The macro `-D__attribute__(x)=' is still needed in cflow(1), whether the
`-g' option is specified or not. Someone added __attribute__ to the
gnu_keywords list in prcc.c. This is wrong, since __attribute__ defines
not just a new C type, but a new C grammar as well.
For portability, I suggest the following.
>From the end-user's standpoint, it would be nice if `cflow *.c' "just worked."
Maybe borrow from the GNU autoconf `configure' script:
cat >${TMPFILE}.c <<\EOF
#ifdef __GNUC__
yes;
#endif
EOF
if ${CPP} ${TMPFILE}.c | egrep yes >/dev/null 2>&1; then
CPP="${CPP} -D__attribute__(x)="
fi
rm -f ${TMPFILE}.c
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