updated wrt lex/flex

diff --git a/README b/README
index a6c1675980b4af589773109501567b26a434a125..f508e18074bc098d56e5bab18fd0a2702427bf48 100644 (file)
--- a/README
+++ b/README
@@ -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
 ===================

diff --git a/TROUBLESHOOTING b/TROUBLESHOOTING
index 3eb45d0e5f9be7e264a44734b0e0258ff56f6449..a0ccd3406d635bacc4894b3183dcafd49d9e598d 100644 (file)
--- a/TROUBLESHOOTING
+++ b/TROUBLESHOOTING
@@ -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.