From f104525c71fbd6338e98050201253f2fe464ec9b Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Thu, 28 Jan 2021 23:14:30 +0900
Subject: mkmf: cpp_command in C++ mode

---
 test/mkmf/test_egrep_cpp.rb | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'test')

diff --git a/test/mkmf/test_egrep_cpp.rb b/test/mkmf/test_egrep_cpp.rb
index 7ac0e60010..2d10140368 100644
--- a/test/mkmf/test_egrep_cpp.rb
+++ b/test/mkmf/test_egrep_cpp.rb
@@ -10,4 +10,16 @@ class TestMkmfEgrepCpp < TestMkmf
   def test_not_have_func
     assert_equal(false, egrep_cpp(/never match/, ""), MKMFLOG)
   end
+
+  class TestMkmfEgrepCxx < self
+    def test_cxx_egrep_cpp
+      assert_equal(true, MakeMakefile["C++"].egrep_cpp(/^ok/, <<~SRC), MKMFLOG)
+      #ifdef __cplusplus
+      ok
+      #else
+      #error not C++
+      #endif
+      SRC
+    end
+  end
 end
-- 
cgit v1.2.3