From a3b4cbff7b2969d986261e59911a75314cb0a2ea Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fr=C3=A9d=C3=A9ric=20L=C3=A9caille?= <flecaille@haproxy.com>
Date: Wed, 19 Dec 2018 16:27:47 +0100
Subject: [PATCH] REGTEST: Make reg-tests target support argument.

With this patch we can provide a list of argument to reg-tests target.
Useful to run reg tests for a list of VTC files like that:

    $ VARNISHTEST_PROGRAM=<...> make reg-tests reg-tests/checks/*.vtc
---
 Makefile | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 472585116..450622edb 100644
--- a/Makefile
+++ b/Makefile
@@ -1092,9 +1092,15 @@ opts:
 	@echo 'OPTIONS_OBJS="$(strip $(OPTIONS_OBJS))"'
 	@echo 'OBJS="$(strip $(OBJS))"'
 
+ifeq (reg-tests, $(firstword $(MAKECMDGOALS)))
+  REGTEST_ARGS := $(wordlist 2, $(words $(MAKECMDGOALS)), $(MAKECMDGOALS))
+  $(eval $(REGTEST_ARGS):;@true)
+endif
+
 # Target to run the regression testing script files.
 reg-tests:
-	./scripts/run-regtests.sh --LEVEL "$$LEVEL" $(REG_TEST_FILES)
+	@./scripts/run-regtests.sh --LEVEL "$$LEVEL" $(REGTEST_ARGS) $(REG_TEST_FILES)
+.PHONY: $(REGTEST_ARGS)
 
 reg-tests-help:
 	@echo