ci: add vmtest build testing

Signed-off-by: Mykola Lysenko <[email protected]>

.github/workflows/helpers.sh

@@ -0,0 +1,72 @@
+# shellcheck shell=bash
+
+# $1 - start or end
+# $2 - fold identifier, no spaces
+# $3 - fold section description
+foldable() {
+  local YELLOW='\033[1;33m'
+  local NOCOLOR='\033[0m'
+  if [ $1 = "start" ]; then
+    line="::group::$2"
+    if [ ! -z "${3:-}" ]; then
+      line="$line - ${YELLOW}$3${NOCOLOR}"
+    fi
+  else
+    line="::endgroup::"
+  fi
+  echo -e "$line"
+}
+
+__print() {
+  local TITLE=""
+  if [[ -n $2 ]]; then
+      TITLE=" title=$2"
+  fi
+  echo "::$1${TITLE}::$3"
+}
+
+# $1 - title
+# $2 - message
+print_error() {
+  __print error $1 $2
+}
+
+# $1 - title
+# $2 - message
+print_notice() {
+  __print notice $1 $2
+}
+
+# No arguments
+llvm_default_version() {
+  echo "16"
+}
+
+# No arguments
+llvm_latest_version() {
+  echo "17"
+}
+
+# $1 - toolchain name
+llvm_version() {
+  local toolchain="$1"
+  local toolchain_name="$(echo $toolchain | cut -d '-' -f 1)"
+  local toolchain_version="$(echo $toolchain | cut -d '-' -f 2)"
+
+  if [ "$toolchain_name" == "llvm" ]; then
+    echo "$toolchain_version"
+    return 0
+  else
+    llvm_default_version
+    return 1
+  fi
+}
+
+# No arguments
+kernel_build_make_jobs() {
+  # returns the number of processes to use when building kernel/selftests/samples
+  # default to 4*nproc if MAX_MAKE_JOBS is not defined
+  smp=$((4*$(nproc)))
+  MAX_MAKE_JOBS=${MAX_MAKE_JOBS:-$smp}
+  echo $(( smp > MAX_MAKE_JOBS ? MAX_MAKE_JOBS : smp ))
+}