[avr-gcc-list] [Patch, avr-libc]: Relax sanity check for CC from *avr*gcc* to *gcc*

[Georg-Johann Lay]

This is a proposed patch to allow compiler names that don't fit into the
"avr-gcc" scheme like, e.g. "xgcc".

Johann

        * configure.ac (CC): Use `${CC} -dumpmachine` to query for right cross
        compiler instead of checking CC.


Index: configure.ac
===================================================================
--- configure.ac        (revision 2259)
+++ configure.ac        (working copy)
@@ -146,7 +146,12 @@ AC_CHECK_TOOL(AR, ar, ar)
 # Make sure that we found the right avr cross-compiler.
 
 case "${CC}" in
-   *avr*gcc*) ;;
+   *gcc*)
+    case "X`${CC} -dumpmachine`X" in
+       XavrX) ;;
+       *) AC_MSG_ERROR(Wrong C compiler found; check the PATH!) ;;
+    esac
+    ;;
    *) AC_MSG_ERROR(Wrong C compiler found; check the PATH!) ;;
 esac
 case "${AS}" in