Index: head/sysutils/acpica-tools/files/patch-generate_unix_iasl_Makefile
===================================================================
--- head/sysutils/acpica-tools/files/patch-generate_unix_iasl_Makefile	(revision 393670)
+++ head/sysutils/acpica-tools/files/patch-generate_unix_iasl_Makefile	(revision 393671)
@@ -1,62 +1,62 @@
 --- generate/unix/iasl/Makefile.orig	2015-07-17 16:04:37 UTC
 +++ generate/unix/iasl/Makefile
 @@ -260,10 +260,21 @@ CFLAGS += \
  include ../Makefile.rules
  
  #
 +# Function to safely execute yacc
 +#
 +safe_yacc = \
-+	_d=`mktemp -d $(OBJDIR)/$$_f.XXXXXX` &&\
 +	_f=`echo $(1) | tr '[:upper:]' '[:lower:]'` &&\
++	_d=`mktemp -d $(OBJDIR)/$$_f.XXXXXX` &&\
 +	_t=`basename $(3)` &&\
 +	$(YACC) $(YFLAGS) -p$(1) -o$$_d/$$_f.c -d $(2) &&\
 +	mv $$_d/$$_f.$${_t\#\#*.} $(3);\
 +	test -d $$_d && rm -fr $$_d
 +
 +#
  # Macro processing for iASL .y files
  #
  $(OBJDIR)/aslcompiler.y :      $(ASL_PARSER)
 -	$(MACROPROC) $(MFLAGS) $(ASL_COMPILER)/aslparser.y > $(OBJDIR)/aslcompiler.y
 +	$(MACROPROC) $(MFLAGS) $(ASL_COMPILER)/aslparser.y > $@
  
  #
  # Parser and Lexer - intermediate C files
 @@ -271,30 +282,20 @@ $(OBJDIR)/aslcompiler.y :      $(ASL_PAR
  $(OBJDIR)/aslcompilerlex.c :   $(ASL_LEXER)
  	$(LEX) $(LFLAGS) -PAslCompiler -o$@ $(ASL_COMPILER)/aslcompiler.l
  
 -$(OBJDIR)/aslcompiler.y.h :    $(OBJDIR)/aslcompiler.y
 -	$(YACC) $(YFLAGS) -pAslCompiler -o/dev/null --defines=$@ $<
 -
 -$(OBJDIR)/aslcompilerparse.c : $(OBJDIR)/aslcompiler.y
 -	$(YACC) $(YFLAGS) -pAslCompiler -o$@ --defines=/dev/null $<
 +$(OBJDIR)/aslcompilerparse.c $(OBJDIR)/aslcompiler.y.h : $(OBJDIR)/aslcompiler.y
 +	$(call safe_yacc,AslCompiler,$<,$@)
  
  $(OBJDIR)/dtparserlex.c :      $(ASL_COMPILER)/dtparser.l $(OBJDIR)/dtparser.y.h
  	$(LEX) $(LFLAGS) -PDtParser -o$@ $<
  
 -$(OBJDIR)/dtparser.y.h :       $(ASL_COMPILER)/dtparser.y
 -	$(YACC) $(YFLAGS) -pDtParser -o/dev/null --defines=$@ $<
 -
 -$(OBJDIR)/dtparserparse.c :    $(ASL_COMPILER)/dtparser.y
 -	$(YACC) $(YFLAGS) -pDtParser -o$@ --defines=/dev/null $<
 +$(OBJDIR)/dtparserparse.c $(OBJDIR)/dtparser.y.h :       $(ASL_COMPILER)/dtparser.y
 +	$(call safe_yacc,DtParser,$<,$@)
  
  $(OBJDIR)/prparserlex.c :      $(ASL_COMPILER)/prparser.l $(OBJDIR)/prparser.y.h
  	$(LEX) $(LFLAGS) -PPrParser -o$@ $<
  
 -$(OBJDIR)/prparser.y.h :       $(ASL_COMPILER)/prparser.y
 -	$(YACC) $(YFLAGS) -pPrParser -o/dev/null --defines=$@ $<
 -
 -$(OBJDIR)/prparserparse.c :    $(ASL_COMPILER)/prparser.y
 -	$(YACC) $(YFLAGS) -pPrParser -o$@ --defines=/dev/null $<
 -
 +$(OBJDIR)/prparserparse.c $(OBJDIR)/prparser.y.h :       $(ASL_COMPILER)/prparser.y
 +	$(call safe_yacc,PrParser,$<,$@)
  
  #
  # Parsers and Lexers - final object files