Update docker images for arm32 (#17422)

* mark places that we need to change

* update dockumentation for arm

* update build.sh for arm

* update dockers' versions

* fix build.sh

* change default version for arm/armem/arm64

1 files changed, 10 insertions, 5 deletions

diff --git a/build.sh b/build.sh
index d43a7908df..dcb16a9898 100755
--- a/build.sh
+++ b/build.sh
@@ -150,10 +150,10 @@ check_prereqs()
     hash cmake 2>/dev/null || { echo >&2 "Please install cmake before running this script"; exit 1; }
 
 
-    # Minimum required version of clang is version 3.9 for arm/armel cross build
+    # Minimum required version of clang is version 4.0 for arm/armel cross build
     if [[ $__CrossBuild == 1 && ("$__BuildArch" == "arm" || "$__BuildArch" == "armel") ]]; then
-        if ! [[ "$__ClangMajorVersion" -gt "3" || ( $__ClangMajorVersion == 3 && $__ClangMinorVersion == 9 ) ]]; then
-            echo "Please install clang3.9 or latest for arm/armel cross build"; exit 1;
+        if ! [[ "$__ClangMajorVersion" -ge "4" ]]; then
+            echo "Please install clang4.0 or latest for arm/armel cross build"; exit 1;
         fi
     fi
 
@@ -894,8 +894,13 @@ fi
 
 # Set default clang version
 if [[ $__ClangMajorVersion == 0 && $__ClangMinorVersion == 0 ]]; then
-    __ClangMajorVersion=3
-    __ClangMinorVersion=9
+	if [[ "$__BuildArch" == "arm" || "$__BuildArch" == "armel" ]]; then
+		__ClangMajorVersion=5
+		__ClangMinorVersion=0
+	else
+		__ClangMajorVersion=3
+		__ClangMinorVersion=9
+	fi
 fi
 
 if [[ "$__BuildArch" == "armel" ]]; then