Bump buidlroot version to 2018.02.6

bsp/buildroot/support/misc/Buildroot.cmake

@@ -0,0 +1,7 @@
+# Impersonate a Linux system. Afterall, that's what we are...
+set(CMAKE_SYSTEM_NAME Linux)
+include(Platform/Linux)
+
+# Override problematic settings, to avoid RPATH against host lib directories.
+set_property(GLOBAL PROPERTY FIND_LIBRARY_USE_LIB32_PATHS FALSE)
+set_property(GLOBAL PROPERTY FIND_LIBRARY_USE_LIB64_PATHS FALSE)

bsp/buildroot/support/misc/Vagrantfile

@@ -5,7 +5,7 @@
 ################################################################################
 
 # Buildroot version to use
-RELEASE='2017.02'
+RELEASE='2018.02'
 
 ### Change here for more memory/cores ###
 VM_MEMORY=2048

bsp/buildroot/support/misc/relocate-sdk.sh

@@ -0,0 +1,47 @@
+#!/bin/sh
+#
+if [ "$#" -ne 0 ]; then
+    echo "Run this script to relocate the buildroot SDK at that location"
+    exit 1
+fi
+
+LOCFILE="share/buildroot/sdk-location"
+FILEPATH="$(readlink -f "$0")"
+NEWPATH="$(dirname "${FILEPATH}")"
+
+cd "${NEWPATH}"
+if [ ! -r "${LOCFILE}" ]; then
+    echo "Previous location of the buildroot SDK not found!"
+    exit 1
+fi
+OLDPATH="$(cat "${LOCFILE}")"
+
+if [ "${NEWPATH}" = "${OLDPATH}" ]; then
+    echo "This buildroot SDK has already been relocated!"
+    exit 0
+fi
+
+# Check if the path substitution does work properly, e.g.  a tree
+# "/a/b/c" copied into "/a/b/c/a/b/c/" would not be allowed.
+newpath="$(sed -e "s|${OLDPATH}|${NEWPATH}|g" "${LOCFILE}")"
+if [ "${NEWPATH}" != "${newpath}" ]; then
+    echo "Something went wrong with substituting the path!"
+    echo "Please choose another location for your SDK!"
+    exit 1
+fi
+
+echo "Relocating the buildroot SDK from ${OLDPATH} to ${NEWPATH} ..."
+
+# Make sure file uses the right language
+export LC_ALL=C
+# Replace the old path with the new one in all text files
+grep -lr "${OLDPATH}" . | while read -r FILE ; do
+    if file -b --mime-type "${FILE}" | grep -q '^text/' && [ "${FILE}" != "${LOCFILE}" ]
+    then
+        sed -i "s|${OLDPATH}|${NEWPATH}|g" "${FILE}"
+    fi
+done
+
+# At the very end, we update the location file to not break the
+# SDK if this script gets interruted.
+sed -i "s|${OLDPATH}|${NEWPATH}|g" ${LOCFILE}

bsp/buildroot/support/misc/target-dir-warning.txt

@@ -25,5 +25,5 @@ can extract as root:
 
 Those image files are created using the contents of the target/
 directory, but there is a post-processing step to create device files
-and set owernship/permissions properly even if Buildroot does not run
+and set ownership/permissions properly even if Buildroot does not run
 as root.

bsp/buildroot/support/misc/toolchainfile.cmake.in

@@ -4,13 +4,17 @@
 #
 
 # In order to allow the toolchain to be relocated, we calculate the
-# HOST_DIR based on this file's location: $(HOST_DIR)/usr/share/buildroot
+# HOST_DIR based on this file's location: $(HOST_DIR)/share/buildroot
 # and store it in RELOCATED_HOST_DIR.
 # All the other variables that need to refer to HOST_DIR will use the
 # RELOCATED_HOST_DIR variable.
-string(REPLACE "/usr/share/buildroot" "" RELOCATED_HOST_DIR ${CMAKE_CURRENT_LIST_DIR})
+string(REPLACE "/share/buildroot" "" RELOCATED_HOST_DIR ${CMAKE_CURRENT_LIST_DIR})
 
-set(CMAKE_SYSTEM_NAME Linux)
+# Point cmake to the location where we have our custom modules,
+# so that it can find our custom platform description.
+list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR})
+
+set(CMAKE_SYSTEM_NAME Buildroot)
 set(CMAKE_SYSTEM_PROCESSOR @@CMAKE_SYSTEM_PROCESSOR@@)
 
 # Set the {C,CXX}FLAGS appended by CMake depending on the build type
@@ -44,7 +48,7 @@ set(CMAKE_EXE_LINKER_FLAGS "@@TARGET_LDFLAGS@@" CACHE STRING "Buildroot LDFLAGS
 
 set(CMAKE_INSTALL_SO_NO_EXE 0)
 
-set(CMAKE_PROGRAM_PATH "${RELOCATED_HOST_DIR}/usr/bin")
+set(CMAKE_PROGRAM_PATH "${RELOCATED_HOST_DIR}/bin")
 set(CMAKE_SYSROOT "${RELOCATED_HOST_DIR}/@@STAGING_SUBDIR@@")
 set(CMAKE_FIND_ROOT_PATH "${RELOCATED_HOST_DIR}/@@STAGING_SUBDIR@@")
 set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)