Hardcode Lua library version in debian/rules, rather than the Makefile.

The version can be overridden with the LUA envvar

Make LUA=lua5.4

Thanks to Petr Menšík for the patch which inspired this one.

Makefile

@@ -29,6 +29,7 @@ LDFLAGS       =
 COPTS         = 
 RPM_OPT_FLAGS = 
 LIBS          = 
+LUA           = lua
 
 #################################################################
 
@@ -60,8 +61,8 @@ idn2_cflags =   `echo $(COPTS) | $(top)/bld/pkg-wrapper HAVE_LIBIDN2 $(PKG_CONFI
 idn2_libs =     `echo $(COPTS) | $(top)/bld/pkg-wrapper HAVE_LIBIDN2 $(PKG_CONFIG) --libs libidn2`
 ct_cflags =     `echo $(COPTS) | $(top)/bld/pkg-wrapper HAVE_CONNTRACK $(PKG_CONFIG) --cflags libnetfilter_conntrack`
 ct_libs =       `echo $(COPTS) | $(top)/bld/pkg-wrapper HAVE_CONNTRACK $(PKG_CONFIG) --libs libnetfilter_conntrack`
-lua_cflags =    `echo $(COPTS) | $(top)/bld/pkg-wrapper HAVE_LUASCRIPT $(PKG_CONFIG) --cflags lua5.4` 
-lua_libs =      `echo $(COPTS) | $(top)/bld/pkg-wrapper HAVE_LUASCRIPT $(PKG_CONFIG) --libs lua5.4` 
+lua_cflags =    `echo $(COPTS) | $(top)/bld/pkg-wrapper HAVE_LUASCRIPT $(PKG_CONFIG) --cflags $(LUA)` 
+lua_libs =      `echo $(COPTS) | $(top)/bld/pkg-wrapper HAVE_LUASCRIPT $(PKG_CONFIG) --libs $(LUA)` 
 nettle_cflags = `echo $(COPTS) | $(top)/bld/pkg-wrapper HAVE_DNSSEC     $(PKG_CONFIG) --cflags 'nettle hogweed' \
                                                         HAVE_CRYPTOHASH $(PKG_CONFIG) --cflags nettle \
                                                         HAVE_NETTLEHASH $(PKG_CONFIG) --cflags nettle`

debian/changelog

@@ -1,7 +1,9 @@
-dnsmasq (2.90-1) experimental; urgency=medium
+dnsmasq (2.90~test3-1) experimental; urgency=medium
 
   [ Simon Kelley ]
   * New upstream. (closes: #1033165)
+  * Move hard-coding of Lua version from the upstream Makefile
+    to  d/rules.
   [ Sven Geuer ]
   * Introduce autokpgtests per d/tests/* (closes: #1034135).
   * Switch to dpkg-source 3.0 (quilt) format (closes: #1007041).
@@ -78,7 +80,7 @@ dnsmasq (2.90-1) experimental; urgency=medium
   * Introduce d/u/metadata.
   * Fix lintian issue duplicate-short-description.
   * Fix lintian issue capitalization-error-in-description.
-  * Bump LUA version to 5.4 (closes: #1050750).
+  * Bump Lua version to 5.4 (closes: #1050750).
     Modified files:
     - d/control
     - d/t/functions.d/log.patterns

debian/rules

@@ -87,7 +87,7 @@ override_dh_auto_install:
 		BUILDDIR=debian/auto-build/dnsmasq-base-lua \
 		DESTDIR=$(CURDIR)/debian/dnsmasq-base-lua \
 		PREFIX=$(PREFIX) CFLAGS="$(CFLAGS)" LDFLAGS="$(LDFLAGS)" \
-		COPTS="$(COPTS) -DHAVE_LUASCRIPT"
+		LUA=lua5.4 COPTS="$(COPTS) -DHAVE_LUASCRIPT"
 	dh_auto_build -p dnsmasq-utils -D contrib/lease-tools
 
 override_dh_auto_clean: