From 4a587fab94508271e2d6dc8370e1afe0974c7dab Mon Sep 17 00:00:00 2001
From: Kazuki Yamaguchi <k@rhe.jp>
Date: Sat, 9 Sep 2017 17:33:50 +0900
Subject: configure.in, date: move ext/date-specific existence check

ext/date does not care of the type of timezone and altzone; just use
have_var provided by mkmf.
---
 ext/date/date_core.c | 4 ++--
 ext/date/extconf.rb  | 5 +++++
 2 files changed, 7 insertions(+), 2 deletions(-)

(limited to 'ext/date')

diff --git a/ext/date/date_core.c b/ext/date/date_core.c
index 6ac4ffa47e..bad86ff18b 100644
--- a/ext/date/date_core.c
+++ b/ext/date/date_core.c
@@ -7708,8 +7708,8 @@ datetime_s_now(int argc, VALUE *argv, VALUE klass)
 	s = 59;
 #ifdef HAVE_STRUCT_TM_TM_GMTOFF
     of = tm.tm_gmtoff;
-#elif defined(HAVE_VAR_TIMEZONE)
-#ifdef HAVE_VAR_ALTZONE
+#elif defined(HAVE_TIMEZONE)
+#ifdef HAVE_ALTZONE
     of = (long)-((tm.tm_isdst > 0) ? altzone : timezone);
 #else
     of = (long)-timezone;
diff --git a/ext/date/extconf.rb b/ext/date/extconf.rb
index a4f243ee10..8938df13b3 100644
--- a/ext/date/extconf.rb
+++ b/ext/date/extconf.rb
@@ -1,4 +1,9 @@
 # frozen_string_literal: true
 require 'mkmf'
+
 config_string("strict_warnflags") {|w| $warnflags += " #{w}"}
+
+have_var("timezone", "time.h")
+have_var("altzone", "time.h")
+
 create_makefile('date_core')
-- 
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