TRY_LINK needs EXEEXT

* lib/mkmf.rb (TRY_LINK): need EXEEXT for cross-compiling.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35103 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/mkmf.rb

@@ -2352,7 +2352,7 @@ MESSAGE
   COMPILE_C = config_string('COMPILE_C') || '$(CC) $(INCFLAGS) $(CPPFLAGS) $(CFLAGS) $(COUTFLAG)$@ -c $<'
   COMPILE_CXX = config_string('COMPILE_CXX') || '$(CXX) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) $(COUTFLAG)$@ -c $<'
   TRY_LINK = config_string('TRY_LINK') ||
-    "$(CC) #{OUTFLAG}conftest $(INCFLAGS) $(CPPFLAGS) " \
+    "$(CC) #{OUTFLAG}conftest#{$EXEEXT} $(INCFLAGS) $(CPPFLAGS) " \
     "$(CFLAGS) $(src) $(LIBPATH) $(LDFLAGS) $(ARCH_FLAG) $(LOCAL_LIBS) $(LIBS)"
   LINK_SO = config_string('LINK_SO') ||
     if CONFIG["DLEXT"] == $OBJEXT