From: Andrew Ruder <andrew.ruder@elecsyscorp.com>
Subject: [PATCH] Disable tcl compatibility layers

Turn off building compatibility layers for old/broken versions of
standard functions (strstr, strtoul, strtod) with the assumption that
anything buildroot is using as a standard C library will be good enough
to not have broken behavior.

Signed-off-by: Andrew Ruder <andrew.ruder@elecsyscorp.com>
[Fabrice: Update for 8.6.9]
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
---

diff --git a/unix/tcl.m4 b/unix/tcl.m4
--- a/unix/tcl.m4
+++ b/unix/tcl.m4
@@ -2725,7 +2725,7 @@ AC_DEFUN([SC_TCL_CHECK_BROKEN_FUNC],[
     if test ["$tcl_ok"] = 1; then
 	AC_CACHE_CHECK([proper ]$1[ implementation], [tcl_cv_]$1[_unbroken],
 	    AC_TRY_RUN([[int main() {]$2[}]],[tcl_cv_]$1[_unbroken]=ok,
-		[tcl_cv_]$1[_unbroken]=broken,[tcl_cv_]$1[_unbroken]=unknown))
+		[tcl_cv_]$1[_unbroken]=broken,[tcl_cv_]$1[_unbroken]=ok))
 	if test ["$tcl_cv_]$1[_unbroken"] = "ok"; then
 	    tcl_ok=1
 	else