Feature/kasm 1838 libjpeg turbo from source (#49)

New build option with latest stable libjpeg-turbo library

builder/build-package

@@ -4,6 +4,7 @@ set -e
 
 os="$1"
 codename="$2"
+build_tag="$3"
 
 detect_package_format() {
   package_format=rpm
@@ -12,8 +13,17 @@ detect_package_format() {
   fi
 }
 
+warn_build_tag_not_supported_for_rpm_and_exit() {
+  if [[ "$build_tag" && "$package_format" = "rpm" ]]; then
+    echo >&2 "<build_tag> isn't supported for rpm"
+    exit 1
+  fi
+}
+
 cd "$(dirname "$0")/.."
 
 detect_package_format
-builder/build-tarball "$os" "$codename"
-builder/build-${package_format} "$os" "$codename"
+warn_build_tag_not_supported_for_rpm_and_exit
+
+builder/build-tarball "$os" "$codename" "$build_tag"
+builder/build-${package_format} "$os" "$codename" "$build_tag"