Bump buidlroot version to 2018.02.6

bsp/buildroot/support/scripts/check-host-rpath

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 
 # This script scans $(HOST_DIR)/{bin,sbin} for all ELF files, and checks
-# they have an RPATH to $(HOST_DIR)/usr/lib if they need libraries from
+# they have an RPATH to $(HOST_DIR)/lib if they need libraries from
 # there.
 
 # Override the user's locale so we are sure we can parse the output of
@@ -18,6 +18,7 @@ main() {
 
     ret=0
     while read file; do
+        is_elf "${file}" || continue
         elf_needs_rpath "${file}" "${hostdir}" || continue
         check_elf_has_rpath "${file}" "${hostdir}" && continue
         if [ ${ret} -eq 0 ]; then
@@ -26,21 +27,25 @@ main() {
             printf "*** ERROR: package %s installs executables without proper RPATH:\n" "${pkg}"
         fi
         printf "***   %s\n" "${file}"
-    done < <( find "${hostdir}"/{,usr/}{bin,sbin} -type f -exec file {} + 2>/dev/null \
-              |sed -r -e '/^([^:]+):.*\<ELF\>.*\<executable\>.*/!d'                \
-                      -e 's//\1/'                                                  \
-            )
+    done < <( find "${hostdir}"/{bin,sbin} -type f 2>/dev/null )
 
     return ${ret}
 }
 
+is_elf() {
+    local f="${1}"
+
+    readelf -l "${f}" 2>/dev/null \
+    |grep -E 'Requesting program interpreter:' >/dev/null 2>&1
+}
+
 elf_needs_rpath() {
     local file="${1}"
     local hostdir="${2}"
     local lib
 
     while read lib; do
-        [ -e "${hostdir}/usr/lib/${lib}" ] && return 0
+        [ -e "${hostdir}/lib/${lib}" ] && return 0
     done < <( readelf -d "${file}"                                         \
               |sed -r -e '/^.* \(NEEDED\) .*Shared library: \[(.+)\]$/!d;' \
                      -e 's//\1/;'                                          \
@@ -58,7 +63,7 @@ check_elf_has_rpath() {
         for dir in ${rpath//:/ }; do
             # Remove duplicate and trailing '/' for proper match
             dir="$( sed -r -e 's:/+:/:g; s:/$::;' <<<"${dir}" )"
-            [ "${dir}" = "${hostdir}/usr/lib" ] && return 0
+            [ "${dir}" = "${hostdir}/lib" -o "${dir}" = "\$ORIGIN/../lib" ] && return 0
         done
     done < <( readelf -d "${file}"                                              \
               |sed -r -e '/.* \(R(UN)?PATH\) +Library r(un)?path: \[(.+)\]$/!d' \