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(-)

Index: libc/misc/time/time.c

===================================================================

--- a/libc/misc/time/time.c	(revision 17534)

+++ b/libc/misc/time/time.c	(revision 17647)

@@ -158,7 +158,9 @@

 #endif

 #if defined (L_tzset) || defined (L_localtime_r) || defined(L_strftime) || \

-    defined(L__time_mktime) || defined(L__time_mktime_tzi)

+	 defined(L__time_mktime) || defined(L__time_mktime_tzi) || \

+	 ((defined(L_strftime) || defined(L_strftime_l)) && \

+	  defined(__UCLIBC_HAS_XLOCALE__))

 void _time_tzset (int);