1 files changed, 16 insertions, 0 deletions
diff --git a/tool/mkconfig.rb b/tool/mkconfig.rb
index 74736540cd..edfdda203b 100755
--- a/tool/mkconfig.rb
+++ b/tool/mkconfig.rb
@@ -201,6 +201,12 @@ IO.foreach(File.join(srcdir, "version.h")) do |l|
     break if versions.size == 4
     next
   end
+  m = /^\s*#\s*define\s+RUBY_VERSION_(\w+)\s+(-?\d+)/.match(l)
+  if m
+    versions[m[1]] = m[2]
+    break if versions.size == 4
+    next
+  end
   m = /^\s*#\s*define\s+RUBY_VERSION\s+\W?([.\d]+)/.match(l)
   if m
     versions['MAJOR'], versions['MINOR'], versions['TEENY'] = m[1].split('.')
@@ -208,6 +214,16 @@ IO.foreach(File.join(srcdir, "version.h")) do |l|
     next
   end
 end
+if versions.size != 4
+  IO.foreach(File.join(srcdir, "include/ruby/version.h")) do |l|
+    m = /^\s*#\s*define\s+RUBY_API_VERSION_(\w+)\s+(-?\d+)/.match(l)
+    if m
+      versions[m[1]] ||= m[2]
+      break if versions.size == 4
+      next
+    end
+  end
+end
 %w[MAJOR MINOR TEENY PATCHLEVEL].each do |v|
   print "  CONFIG[#{v.dump}] = #{(versions[v]||vars[v]).dump}\n"
 end