https://git.ruby-lang.org/ruby.git/commit/?id=ac2866005b

From ac2866005b96baf986072f86ecd3dfd887f2bda3 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Sun, 14 Jul 2019 01:41:55 +0900
Subject: Add empty depend file if extconf.rb only exists


diff --git a/.travis.yml b/.travis.yml
index c4ee4d7..03f1107 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -345,6 +345,17 @@ env: https://github.com/ruby/ruby/blob/trunk/.travis.yml#L345
     before_install:
     install:
     before_script:
+      - |-
+        ruby -e 'new = []
+          Dir.glob("ext/**/extconf.rb") {|ex|
+            unless File.exist?(dep = File.dirname(ex)+"/depend")
+              puts "Adding "+dep
+              File.copy_stream("template/depend.tmpl", dep)
+              new << dep
+            end
+          }
+          exec("git", "add", *new) unless new.empty?'
+      - git diff --cached
       - "> config.status"
       - "> .rbconfig.time"
       - sed -f tool/prereq.status template/Makefile.in common.mk > Makefile
-- 
cgit v0.10.2


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