Fix non-preprocessing compiler command to specify input normally.

Author: aardvark179

lib/truffle/rbconfig-for-mkmf.rb

@@ -162,10 +162,10 @@
 
   mkconfig['COMPILE_C']   = with_conditional_preprocessing.call(
     "$(CC) -I$(<D) $(INCFLAGS) $(CPPFLAGS) $(CFLAGS) $(COUTFLAG) -xc - -o $@ && #{opt} #{opt_passes} $@ -o $@",
-    "$(CC) -I$(<D) $(INCFLAGS) $(CPPFLAGS) $(CFLAGS) $(COUTFLAG) -xc - -o $@ <$(<) && #{opt} #{opt_passes} $@ -o $@")
+    "$(CC) $(INCFLAGS) $(CPPFLAGS) $(CFLAGS) $(COUTFLAG) -xc $(<) && #{opt} #{opt_passes} $@ -o $@")
   mkconfig['COMPILE_CXX'] = with_conditional_preprocessing.call(
     "$(CXX) -I$(<D) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) $(COUTFLAG) -xc++ - -o $@ && #{opt} #{opt_passes} $@ -o $@",
-    "$(CXX) -I$(<D) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) $(COUTFLAG) -xc++ - -o $@ <$(<) && #{opt} #{opt_passes} $@ -o $@")
+    "$(CXX) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) $(COUTFLAG) -xc++ $(<) && #{opt} #{opt_passes} $@ -o $@")
 end
 
 # From mkmf.rb: "$(CC) #{OUTFLAG}#{CONFTEST}#{$EXEEXT} $(INCFLAGS) $(CPPFLAGS) $(CFLAGS) $(src) $(LIBPATH) $(LDFLAGS) $(ARCH_FLAG) $(LOCAL_LIBS) $(LIBS)"