Hi !
The trick compiling modules using lex is to modify your /usr/lib/flex.skel.
Linux has flex and it's used instead of lex. Here is diffs betweed normal
linux /usr/lib/flex.skel (Slackware 1,?.?) and /usr/lib/flex.skel compiling
********************************************
grass:
bash# diff flex.skel.grass flex.skel.ori
11d10
< int yylineno;
130a130
#define yywrap() 1
282c282
< static int yyinput YY_PROTO(( void ));
---
static int input YY_PROTO(( void ));
513c513
< if ( number_to_move == 1 )
---
if ( number_to_move - YY_MORE_ADJ == 1 )
637c637
< static int yyinput()
---
static int input()
676c676
< return ( yyinput() );
---
return ( input() );
*****************************************************
With this configuration I was able to compile r.binfer and r.combine.
Then you must edit $(GRASSBASE)/etc/bin/main/cmd/r.combine
and change : from 1st row to #!/bin/sh
I also used -traditional flag with compilation
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