Use contrib as a single source of truth for nginx/nginx-plus versions.
diff --git a/alpine/Makefile b/alpine/Makefile
index 66debe9..29cf36a 100644
--- a/alpine/Makefile
+++ b/alpine/Makefile
@@ -1,8 +1,13 @@
SHELL= /bin/sh
-BASE_VERSION= 1.19.6
+CONTRIB?= ../contrib
+CONTRIB:= $(abspath $(CONTRIB))
+
+include $(CONTRIB)/src/nginx/version
+
+BASE_VERSION= $(NGINX_VERSION)
BASE_RELEASE= 1
-PLUS_VERSION= 23
+PLUS_VERSION= $(NGINX_PLUS_VERSION)
PLUS_RELEASE= ${BASE_RELEASE}
BASE_SRC= nginx-$(BASE_VERSION).tar.gz
SRCDIR= nginx-$(BASE_VERSION)
@@ -10,8 +15,6 @@
DOCS?= ../docs
SRCPATH?= ../..
MODSRC_PREFIX= ../
-CONTRIB?= ../contrib
-CONTRIB:= $(abspath $(CONTRIB))
MODULE_TARGET?= oss
diff --git a/contrib/src/nginx/version b/contrib/src/nginx/version
index 3268628..8a82f7c 100644
--- a/contrib/src/nginx/version
+++ b/contrib/src/nginx/version
@@ -1 +1,2 @@
NGINX_VERSION := 1.19.6
+NGINX_PLUS_VERSION := 23
diff --git a/debian/Makefile b/debian/Makefile
index 7d0105f..04f44ad 100644
--- a/debian/Makefile
+++ b/debian/Makefile
@@ -1,16 +1,19 @@
SHELL= /bin/bash
-BASE_VERSION= 1.19.6
+CONTRIB?= ../contrib
+CONTRIB:= $(abspath $(CONTRIB))
+
+include $(CONTRIB)/src/nginx/version
+
+BASE_VERSION= $(NGINX_VERSION)
BASE_RELEASE= 1
-PLUS_VERSION= 23
+PLUS_VERSION= $(NGINX_PLUS_VERSION)
BASE_SRC= nginx-$(BASE_VERSION).tar.gz
SRCDIR= nginx-$(BASE_VERSION)
SRCPATH?= ../..
DOCS?= ../docs
BUILD_ENV_PATH= ${HOME}/debuild
MODULE_TARGET?= oss
-CONTRIB?= ../contrib
-CONTRIB:= $(abspath $(CONTRIB))
ifeq ($(MODULE_TARGET), plus)
MODULE_CONTROL_TEMPLATE= nginx-plus-module.control.in
diff --git a/rpm/SPECS/Makefile b/rpm/SPECS/Makefile
index 8452a14..465b68c 100644
--- a/rpm/SPECS/Makefile
+++ b/rpm/SPECS/Makefile
@@ -1,8 +1,13 @@
SHELL= /bin/bash
-BASE_VERSION= 1.19.6
+CONTRIB?= ../../contrib
+CONTRIB:= $(abspath $(CONTRIB))
+
+include $(CONTRIB)/src/nginx/version
+
+BASE_VERSION= $(NGINX_VERSION)
BASE_RELEASE= 1
-PLUS_VERSION= 23
+PLUS_VERSION= $(NGINX_PLUS_VERSION)
BASE_SRC= nginx-$(BASE_VERSION).tar.gz
SRCPATH?= ../SOURCES
BUILD_ENV_PATH= ${HOME}/rpmbuild
@@ -10,8 +15,6 @@
MODSRC_PREFIX=
BUILD_DIR= %{bdir}
DOCS?= ../../docs
-CONTRIB?= ../../contrib
-CONTRIB:= $(abspath $(CONTRIB))
ifeq ($(MODULE_TARGET), plus)
MODULE_SPEC_TEMPLATE= nginx-plus-module.spec.in
