i am getting error in modutils-2.4.25

it is on the second execution of the make command after first execution

*************************************************
make[1]: Entering directory `/usr/src/modutils-2.4.25/util'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/usr/src/modutils-2.4.25/util'
make[1]: Entering directory `/usr/src/modutils-2.4.25/obj'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/usr/src/modutils-2.4.25/obj'
make[1]: Entering directory `/usr/src/modutils-2.4.25/insmod'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/usr/src/modutils-2.4.25/insmod'
make[1]: Entering directory `/usr/src/modutils-2.4.25/genksyms'
gcc -O2 -Wall -Wno-uninitialized -I. -I. -I./../include -D_GNU_SOURCE -DCONFIG_ROOT_CHECK_OFF=0 -c -o lex.o lex.c
make[1]: Leaving directory `/usr/src/modutils-2.4.25/genksyms'
built-in function `log' declared as non-function
lex.l: In function `yylex':
lex.l:429: error: `yytext_ptr' undeclared (first use in this function)
lex.l:429: error: (Each undeclared identifier is reported only once
lex.l:429: error: for each function it appears in.)
make[1]: *** [lex.o] Error 1
make: *** [all] Error 2

***************************************************

plz help

install old versions of bison and flex
On debian, you may do this by:
apt-get install bison-1.35 flex-old

I know this is an old thread, but when I was looking for the answer myself... I figure'd it would be nice for others to have it.

Yea, thanks. We need modutils to keep 2.4.x backwards compatability from what I gather.

Actually, it just seems to be the fault of flex. Newer versions of flex seem to have crappy lex emulation support. I'm not overly happy with the 2.6 kernels and decided to make my LFS 6.0 backwards compatable with the 2.4 kernel branch. I hit the same snag.

I'm not sure what version of flex he was using. His post was from quite awhile ago. I had to downgrade flex to 2.5.4a and it builds fine now. Hit the slackware ftp site and grab all the patches for that version so it will build against newer versions of GCC and Glibc.

My specs:

GCC-3.4.1
Glibc-2.3.4
flex-2.5.4a
modutils-2.4.27
module-init-tools-3.1 (now requires docbook-utils)
bison-1.875a

With the older flex, you don't have to make that emulation wrapper script "lex" that the book talks about. Just symlink /usr/bin/flex --> /usr/bin/lex

also symlink /usr/lib/libfl.a --> /usr/lib/libl.a