From 5cae104e51be9cbf524b7d953b33d0909c46d006 Mon Sep 17 00:00:00 2001
From: mrkn <mrkn@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sat, 1 Dec 2018 09:29:14 +0000
Subject: Let sub-directory exts depend on their parent ext

* ext/extmk.rb: Let sub-directory exts depend on their parent ext.

* template/exts.mk.tmpl: ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66117 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ext/extmk.rb | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

(limited to 'ext/extmk.rb')

diff --git a/ext/extmk.rb b/ext/extmk.rb
index c5b41513bd..1389dc4117 100755
--- a/ext/extmk.rb
+++ b/ext/extmk.rb
@@ -722,7 +722,16 @@ begin
     end
     targets.each do |tgt|
       exts.each do |d|
-        mf.puts "#{d[0..-2]}#{tgt}:\n\t$(Q)#{submake} $(MFLAGS) V=$(V) $(@F)"
+        d = d[0..-2]
+        t = "#{d}#{tgt}"
+        if  /^(dist|real)?clean$/ =~ tgt
+          deps = exts.select {|e|e.start_with?(d)}.map {|e|"#{e[0..-2]}#{tgt}"} - [t]
+          pd = ' ' + deps.join(' ') unless deps.empty?
+        else
+          pext = File.dirname(d)
+          pd = " #{pext}/#{tgt}" if exts.include?("#{pext}/.")
+        end
+        mf.puts "#{t}:#{pd}\n\t$(Q)#{submake} $(MFLAGS) V=$(V) $(@F)"
       end
     end
     mf.puts "\n""extso:\n"
-- 
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