Removed mkmf.log dump in Makefile

ext/-test-/cxxanyargs/extconf.rb

@@ -2,7 +2,6 @@
 
 cxx = MakeMakefile["C++"]
 
-begin
 ok = cxx.try_compile(<<~'begin', "") do |x|
   #include "ruby/config.h"
 
@@ -21,11 +20,7 @@ begin
   # subject we are going to test in this extension library.
   x.sub! %<#include "ruby.h">, ''
 end
-rescue
-end
 
 if ok
   create_makefile("-test-/cxxanyargs")
-else
-  File.write("Makefile", "all:\n\tcat mkmf.log\n")
 end

ext/extmk.rb

@@ -271,9 +271,11 @@ def extmake(target, basedir = 'ext', maybestatic = true)
   ensure
     Logging::log_close
     if error
-      STDERR.print("#{message}\n\t#{error.backtrace.join("\n\t")}\n")
-      if File.exist?("mkmf.log")
-        IO.copy_stream("mkmf.log", STDERR)
+      begin
+        if File.exist?("mkmf.log")
+          IO.copy_stream("mkmf.log", STDERR)
+        end
+      rescue SystemCallError
       end
     end
     if rbconfig0