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-rw-r--r--ext/date/extconf.rb13
1 files changed, 13 insertions, 0 deletions
diff --git a/ext/date/extconf.rb b/ext/date/extconf.rb
new file mode 100644
index 0000000000..8a1467df09
--- /dev/null
+++ b/ext/date/extconf.rb
@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+require 'mkmf'
+
+config_string("strict_warnflags") {|w| $warnflags += " #{w}"}
+
+append_cflags("-Wno-compound-token-split-by-macro") if RUBY_VERSION < "2.7."
+have_func("rb_category_warn")
+with_werror("", {:werror => true}) do |opt, |
+ have_var("timezone", "time.h", opt)
+ have_var("altzone", "time.h", opt)
+end
+
+create_makefile('date_core')