build: show linux distro in BUILT_ON info

build

@@ -15,18 +15,7 @@ cd -P -- "$(dirname -- "${BASH_SOURCE[0]}")"
 PKG_VSN="${PKG_VSN:-$(./pkg-vsn.sh)}"
 export PKG_VSN
 
-if [ "$(uname -s)" = 'Darwin' ]; then
-	SYSTEM=macos
-elif [ "$(uname -s)" = 'Linux' ]; then
-    if grep -q -i 'centos' /etc/*-release; then
-        DIST='centos'
-        VERSION_ID="$(rpm --eval '%{centos_ver}')"
-    else
-        DIST="$(sed -n '/^ID=/p' /etc/os-release | sed -r 's/ID=(.*)/\1/g' | sed 's/"//g')"
-        VERSION_ID="$(sed -n '/^VERSION_ID=/p' /etc/os-release | sed -r 's/VERSION_ID=(.*)/\1/g' | sed 's/"//g')"
-    fi
-    SYSTEM="$(echo "${DIST}${VERSION_ID}" | sed -r 's/([a-zA-Z]*)-.*/\1/g')"
-fi
+SYSTEM="$(./scripts/get-distro.sh)"
 
 ARCH="$(uname -m)"
 case "$ARCH" in
@@ -46,8 +35,8 @@ export ARCH
 ## Support RPM and Debian based linux systems
 ##
 if [ "$(uname -s)" = 'Linux' ]; then
-    case "${DIST:-}" in
-        ubuntu|debian|raspbian)
+    case "${SYSTEM:-}" in
+        ubuntu*|debian*|raspbian*)
             PKGERDIR='deb'
             ;;
         *)

etc/BUILT_ON

@@ -1 +1 @@
-{{built_on_arch}}
+{{built_on_platform}}

rebar.config.erl

@@ -173,11 +173,24 @@ relx(Vsn, RelType, PkgType) ->
     , {vm_args,false}
     , {release, {emqx, Vsn}, relx_apps(RelType)}
     , {overlay, relx_overlay(RelType)}
-    , {overlay_vars, [ {built_on_arch, rebar_utils:get_arch()}
+    , {overlay_vars, [ {built_on_platform, built_on()}
                      , {emqx_description, emqx_description(RelType, IsEnterprise)}
                      | overlay_vars(RelType, PkgType, IsEnterprise)]}
     ].
 
+built_on() ->
+    On = rebar_utils:get_arch(),
+    case distro() of
+        false -> On;
+        Distro -> On ++ "-" ++ Distro
+    end.
+
+distro() ->
+    case os:type() of
+        {unix, _} -> string:strip(os:cmd("scripts/get-distro.sh"), both, $\n);
+        _ -> false
+    end.
+
 emqx_description(cloud, true) -> "EMQ X Enterprise";
 emqx_description(cloud, false) -> "EMQ X Broker";
 emqx_description(edge, _) -> "EMQ X Edge".

scripts/get-distro.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+## This script prints Linux distro name and its version number
+## e.g. macos, centos8, ubuntu20.04
+
+set -euo pipefail
+
+if [ "$(uname -s)" = 'Darwin' ]; then
+	echo 'macos'
+elif [ "$(uname -s)" = 'Linux' ]; then
+    if grep -q -i 'centos' /etc/*-release; then
+        DIST='centos'
+        VERSION_ID="$(rpm --eval '%{centos_ver}')"
+    else
+        DIST="$(sed -n '/^ID=/p' /etc/os-release | sed -r 's/ID=(.*)/\1/g' | sed 's/"//g')"
+        VERSION_ID="$(sed -n '/^VERSION_ID=/p' /etc/os-release | sed -r 's/VERSION_ID=(.*)/\1/g' | sed 's/"//g')"
+    fi
+    echo "${DIST}${VERSION_ID}" | sed -r 's/([a-zA-Z]*)-.*/\1/g'
+fi