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updated wrt lex/flex

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This commit is contained in:
Todd C. Miller
1996-02-04 21:13:17 +00:00
parent dcac138a6f
commit b220613b8b
2 changed files with 12 additions and 11 deletions
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8
README
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@@ -37,10 +37,10 @@ System requirements
Sudo requires a machine running UN*X (most flavors of BSD, SYSV, or
POSIX will do), a C compiler, and a yacc-compatible parser generator
(yacc, byacc, bison). If you wish to modify the tokenizer then a
version of lex or flex is required (sudo comes with a pre-flex'd
tokenizer). Note that there are a lot of broken lex's out there
so I really recommend using flex (ftp://ftp.ee.lbl.gov/pub/flex*).
(yacc, byacc, bison). If you wish to modify the tokenizer then you
will need flex version 2.5.2 or later. (sudo comes with a pre-flex'd
tokenizer). You can get flex via anonymous ftp from
ftp://ftp.ee.lbl.gov/pub/flex* as well as any GNU mirror.
Building the release
===================

15
TROUBLESHOOTING
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@@ -79,13 +79,6 @@ A) Yes, the s/key support requires that you use tgetpass() since
to get tgetpass() to work, send mail to sudo-bugs@cs.colorado.edu
if you need help.
Q) I overwrote the distributed lex.yy.c with a lex-generated one and
now sudo does not work.
A) The simplest thing to do is "rm -f lex.yy.c ; ln sudo-lex.yy.c lex.yy.c"
which will set you back up with a pre-flexed lex.yy.c.
If you want to hack on the lexer you should get a copy of flex
from ftp.ee.lbl.gov
Q) My C compiler complains about:
"./options.h", line xx "/*" detected in comment
Should I be worried?
@@ -93,3 +86,11 @@ A) No, this is due to the way options are commented out in options.h.
Some ANSI compilers are just a bit too protective.
If anyone have a better way to that is just as easy to uncomment
and that doesn't produce a similar warning, please let me know.
Q) I modified parse.lex but the Makefile is not generating a new
lex.yy.c.
A) You need to uncomment the rule in Makefile (or Makefile.in)
that generates lex.yy.c from parse.lex. This is not enable
by default since sudo comes with a pre-flex'd parse.lex.
May sure you are using flex version 2.5.2 or higher--the
lex that came with your OS may not like parse.lex.