with the current sources I get a ylwrap error again on a debian
unstable:
/usr/share/bison/bison.simple: In Funktion »extparse«:
/usr/share/bison/bison.simple:573: Warnung: implicit declaration of
function `extlex'
external_y.y:75: Warnung: implicit declaration of function `free'
/usr/share/bison/bison.simple:799: Warnung: implicit declaration of
function `exterror'
external_y.y: In Funktion »exterror«:
external_y.y:134: Warnung: control reaches end of non-void function
/bin/sh ./ylwrap `test -f 'external_l.l' || echo './'`external_l.l
lex.yy.c external_l.c -- flex
make[2]: *** [external_l.c] Fehler 1
make[2]: Leaving directory `/home/ace/local/src/gnubg'
make[1]: *** [all-recursive] Fehler 1
make[1]: Leaving directory `/home/ace/local/src/gnubg'
make: *** [all] Fehler 2