#!/usr/bin/make -f

include /usr/share/dpkg/buildflags.mk

# Try and use these Lua modules shipped in Debian...
LUA_LIBS_DEBIAN = cjson bitop

# ... which are not always called their "C" names
LUA_LIBS_DEBIAN_NAMES = cjson bit

# ... but fallback to these currently unpackaged ones.
LUA_LIBS_BUNDLED = struct cmsgpack

LUA_OBJECTS = $(addprefix lua_,$(addsuffix .o,$(LUA_LIBS_BUNDLED)))
LUA_LDFLAGS = $(addprefix -llua5.1-,$(LUA_LIBS_DEBIAN)) $(addprefix ../deps/lua/src/,$(LUA_OBJECTS))

export CFLAGS CPPFLAGS LDFLAGS
export DEB_BUILD_MAINT_OPTIONS = hardening=+all
export DEB_LDFLAGS_MAINT_APPEND = -Wl,-no-as-needed -ldl -latomic $(LUA_LDFLAGS)

ifneq (,$(filter parallel=%,$(DEB_BUILD_OPTIONS)))
	NUMJOBS = $(patsubst parallel=%,%,$(filter parallel=%,$(DEB_BUILD_OPTIONS)))
	MAKEFLAGS += -j$(NUMJOBS)
	export MAKEFLAGS
endif

%:
	dh $@

debian/lua_libs_debian.c:
	echo "// Automatically generated; do not edit." >$@
	echo "luaLoadLib(lua, LUA_LOADLIBNAME, luaopen_package);" >>$@
	set -e; for X in $(LUA_LIBS_DEBIAN_NAMES); do \
		echo "if (luaL_dostring(lua, \"$$X = require('$$X');\"))" >>$@; \
		echo "    serverLog(LL_NOTICE, \"Error loading $$X library\");" >>$@; \
	done
	echo 'luaL_dostring(lua, "module = nil; require = nil; package = nil");' >>$@

override_dh_auto_clean:
	dh_auto_clean
	rm -f src/release.h debian/*.service debian/lua_libs_debian.c

override_dh_auto_build: debian/lua_libs_debian.c
	# Build the non-bundled Lua libraries
	dh_auto_build --sourcedirectory=deps/lua/src -- $(LUA_OBJECTS)
	
	dh_auto_build --parallel -- V=1 USE_SYSTEM_JEMALLOC=yes USE_SYSTEM_LUA=yes USE_SYSTEM_HIREDIS=yes

override_dh_auto_test:
ifeq (,$(filter nocheck,$(DEB_BUILD_OPTIONS)))
	# Avoid race conditions in upstream testsuite.
	./runtest --clients 1 || true
	./runtest-cluster || true
	./runtest-sentinel || true
endif

override_dh_auto_install:
	debian/bin/generate-systemd-service-files

override_dh_compress:
	dh_compress -Xredis-trib.rb

override_dh_installchangelogs:
	dh_installchangelogs --keep 00-RELEASENOTES