Bruce Dubbs wrote:
Joseph Hesse wrote:
On 11/17/2015 01:17 PM, Bruce Dubbs wrote:
Joseph Hesse wrote:
On 11/17/2015 12:33 PM, Bruce Dubbs wrote:
Have you run version-check.sh? What does it say about yacc?
Here is the output from version-check.sh
bison (GNU Bison) 3.0.4
yacc is
You do have bison. That's good, but there is a problem with yacc. What
is the full output of 'yacc --help' or 'yacc --version'? If those don't
give anything useful, then what do you get when you type 'yacc' alone on
the command line?
In any case what you will need to do (as root) is
rm /usr/bin/yacc
ln -s bison /usr/bin/yacc
or
rm /usr/bin/yacc
cat > /usr/bin/yacc << EOF
#! /bin/sh
exec '/usr/bin/bison' -y "$@"
EOF
On my host system yacc alone or yacc --help produces a vertical list of
options. yacc -V gives 1.9 20141128 (space is not an error)
I implemented your suggestion on removing yacc in /usr/bin and making yacc
a symbolic link to bison. Hopefully I won't have any more problems.
That version string indicates Berkeley yacc (byacc). It might work but
AFAIK has not been tested for LFS.
BTW, some of the readers of this thread might be asking "Just what IS
yacc?" The wikipedia page for yacc gives a little description, but it has
a lot of jargon.
In my experience, yacc is taught as a part of a compiler design course in
a senior or graduate level Computer Science curriculum. It's designed
use is to parse a specific language when building a compiler. It has been
used in some other cases, but is quite technical in nature. For LFS, it
is a tool used by other programs such as gcc.
Bison is the GNU clone of yacc. The name bison is a play on words from
the animal yak which is found in the Himalayas and looks somewhat like the
bison animal found in North America.
-- Bruce
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