Finally used the discovered paths from ./configure in scripts/crosstool-NG.sh:
- fix Makefile to really, really not used built-in rules and variables
- have scripts/crosstool-NG.sh generated from scripts/crosstool-NG.sh.in
- create a bin-overide directory ( in ${CT_WORK_DIR}/bin ) that contains shell wrappers to the actual discovered tools

/trunk/scripts/crosstool-NG.sh.in | 27 23 4 0 +++++++++++++++++++++---
/trunk/Makefile.in | 50 48 2 0 +++++++++++++++++++++++++++++++++++++++++++--
2 files changed, 71 insertions(+), 6 deletions(-)

--- gdb-6.1.1-dist/readline/configure	2003-05-27 18:29:47.000000000 -0500

+++ gdb-6.1.1/readline/configure	2004-08-09 14:20:23.000000000 -0500

@@ -6249,7 +6249,12 @@

 echo "$as_me:$LINENO: checking for mbstate_t" >&5

+echo $ECHO_N "bash_cv_have_mbstate_t=$bash_cv_have_mbstate_t" >&6

 echo $ECHO_N "checking for mbstate_t... $ECHO_C" >&6

+if test "${bash_cv_have_mbstate_t+set}" != set; then

+  bash_cv_have_mbstate_t=yes

+  echo $ECHO_N "WARNING!! forcing to yes!!! $ECHO_C" >&6

+fi

 if test "${bash_cv_have_mbstate_t+set}" = set; then

   echo $ECHO_N "(cached) $ECHO_C" >&6

 else