Bump buildroot to version 2017-02

TG-3 #closed

bsp/buildroot/support/dependencies/check-host-cmake.sh

@@ -1,30 +1,47 @@
 #!/bin/sh
 
-candidate="$1"
+candidate="${1}"
+version_min="${2}"
 
-cmake=`which $candidate`
-if [ ! -x "$cmake" ]; then
-	# echo nothing: no suitable cmake found
-	exit 1
+major_min="${version_min%.*}"
+minor_min="${version_min#*.}"
+
+# cmake-3.7 incorrectly handles rpath, linking to host libraries
+blacklist_version="3.7"
+
+cmake=`which ${candidate}`
+if [ ! -x "${cmake}" ]; then
+    # echo nothing: no suitable cmake found
+    exit 1
 fi
 
-version=`$cmake --version | head -n1 | cut -d\  -f3`
-major=`echo "$version" | cut -d. -f1`
-minor=`echo "$version" | cut -d. -f2`
+# Extract version X.Y from versions in the form X.Y or X.Y.Z
+# with X, Y and Z numbers with one or more digits each, e.g.
+#   3.2     -> 3.2
+#   3.2.3   -> 3.2
+#   3.2.42  -> 3.2
+#   3.10    -> 3.10
+#   3.10.4  -> 3.10
+#   3.10.42 -> 3.10
+version="$(${cmake} --version \
+           |sed -r -e '/.* ([[:digit:]]+\.[[:digit:]]+).*$/!d;' \
+                   -e 's//\1/'
+          )"
+major="${version%.*}"
+minor="${version#*.}"
 
-# Versions before 3.0 are affected by the bug described in
-# https://git.busybox.net/buildroot/commit/?id=ef2c1970e4bff3be3992014070392b0e6bc28bd2
-# and fixed in upstream CMake in version 3.0:
-# https://cmake.org/gitweb?p=cmake.git;h=e8b8b37ef6fef094940d3384df5a1d421b9fa568
-major_min=3
-minor_min=0
-if [ $major -gt $major_min ]; then
-	echo $cmake
+if [ "${version}" = "${blacklist_version}" ]; then
+    # echo nothing: no suitable cmake found
+    exit 1
+fi
+
+if [ ${major} -gt ${major_min} ]; then
+    echo "${cmake}"
 else
-	if [ $major -eq $major_min -a $minor -ge $minor_min ]; then
-		echo $cmake
-	else
-		# echo nothing: no suitable cmake found
-		exit 1
-	fi
+    if [ ${major} -eq ${major_min} -a ${minor} -ge ${minor_min} ]; then
+        echo "${cmake}"
+    else
+        # echo nothing: no suitable cmake found
+        exit 1
+    fi
 fi