MT#55283 improve version handling

Change-Id: I8ff496f8460c5c5e0bee6b6bb6f3d2245291c597
(cherry picked from commit 7e6c2c30a4)

kernel-module/gen-rtpengine-kmod-flags

@@ -4,8 +4,12 @@ if [ -z "${M}" ]; then
   M=$(pwd)
 fi
 
-if [ -z "${RTPENGINE_VERSION}" ] && [ -f .release-version ]; then
-  RTPENGINE_VERSION=$(<.release-version)
+if [ -z "${RTPENGINE_VERSION}" ]; then
+  if [ -f .release-version ]; then
+    RTPENGINE_VERSION=$(<.release-version)
+  elif [ -f ../.release-version ]; then
+    RTPENGINE_VERSION=$(<../.release-version)
+  fi
 fi
 
 if [ -z "${RTPENGINE_VERSION}" ]; then
@@ -20,18 +24,23 @@ if [ -z "${RTPENGINE_VERSION}" ]; then
   fi
   if [ "${have_dpkg_parsechangelog}" = yes ]; then
     deb_version="$(dpkg-parsechangelog -l"${deb_changelog}" | awk '/^Version: / {print $2}')"
+    RTPENGINE_VERSION="${deb_version}"
   fi
+
   git_br_commit="git-$(cd "${M}" && git rev-parse --abbrev-ref --symbolic-full-name HEAD 2> /dev/null)-$(cd "${M}" && git rev-parse --short HEAD 2> /dev/null)"
 
-  if [ "${have_dpkg_parsechangelog}" = yes ]; then
-    RTPENGINE_VERSION+=" ${deb_version}"
-  fi
   if [ "${git_br_commit}" != "git--" ]; then
-    RTPENGINE_VERSION+=" ${git_br_commit}"
+    if [ -n "${RTPENGINE_VERSION}" ]; then
+      RTPENGINE_VERSION+=" "
+    fi
+    RTPENGINE_VERSION+="${git_br_commit}"
   fi
+fi
 
-  if [ -z "${RTPENGINE_VERSION}" ]; then
-    RTPENGINE_VERSION="undefined"
-  fi
+if [ -z "${RTPENGINE_VERSION}" ]; then
+  RTPENGINE_VERSION="undefined"
+fi
+
+if [ -n "${RTPENGINE_VERSION}" ]; then
   echo "RTPENGINE_VERSION := ${RTPENGINE_VERSION}"
 fi

utils/gen-common-flags

@@ -19,33 +19,37 @@ if [ -z "${top_srcdir}" ]; then
   top_srcdir=.
 fi
 
-have_dpkg_parsechangelog=no
-if command -v dpkg-parsechangelog >/dev/null; then
-  have_dpkg_parsechangelog=yes
-fi
-
-if [ -z "${RTPENGINE_VERSION}" ] && [ -f .release-version ]; then
-  RTPENGINE_VERSION=$(<.release-version)
+if [ -z "${RTPENGINE_VERSION}" ] && [ -f "${top_srcdir}"/.release-version ]; then
+  RTPENGINE_VERSION=$(<"${top_srcdir}"/.release-version)
 fi
 
 if [ -z "${RTPENGINE_VERSION}" ]; then
+  have_dpkg_parsechangelog=no
+  if command -v dpkg-parsechangelog >/dev/null; then
+    have_dpkg_parsechangelog=yes
+  fi
   if [ "${have_dpkg_parsechangelog}" = yes ]; then
     deb_version="$(dpkg-parsechangelog -l"${top_srcdir}"/debian/changelog | awk '/^Version: / { print $2 }')"
+    RTPENGINE_VERSION="${deb_version}"
   fi
+
   git_br_commit="git-$(git rev-parse --abbrev-ref --symbolic-full-name HEAD 2> /dev/null)-$(git rev-parse --short HEAD 2> /dev/null)"
 
-  if [ "${have_dpkg_parsechangelog}" = yes ]; then
-    RTPENGINE_VERSION+=" ${deb_version}"
-  fi
   if [ "${git_br_commit}" != "git--" ]; then
-    RTPENGINE_VERSION+=" ${git_br_commit}"
+    if [ -n "${RTPENGINE_VERSION}" ]; then
+      RTPENGINE_VERSION+=" "
+    fi
+    RTPENGINE_VERSION+="${git_br_commit}"
   fi
+fi
 
-  if [ -z "${RTPENGINE_VERSION}" ]; then
-    RTPENGINE_VERSION=" undefined"
-  fi
+if [ -z "${RTPENGINE_VERSION}" ]; then
+  RTPENGINE_VERSION=" undefined"
+fi
+
+if [ -n "${RTPENGINE_VERSION}" ]; then
+  echo "RTPENGINE_VERSION := ${RTPENGINE_VERSION}"
 fi
-echo "RTPENGINE_VERSION := ${RTPENGINE_VERSION}"
 
 CFLAGS_DEFAULT=
 CPPFLAGS_DEFAULT=