diff options
Diffstat (limited to 'Makefile.rules')
| -rw-r--r-- | Makefile.rules | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/Makefile.rules b/Makefile.rules index be173700ec..943eaaaf62 100644 --- a/Makefile.rules +++ b/Makefile.rules @@ -1252,6 +1252,8 @@ ifneq ($(YaccFiles),) .PRECIOUS: $(YaccOutput) +all:: $(YaccFiles:%.l=$(PROJ_SRC_DIR)/%.cpp.cvs) + # Cancel built-in rules for yacc %.c: %.y %.cpp: %.y @@ -1265,10 +1267,21 @@ $(PROJ_SRC_DIR)/%.cpp $(PROJ_SRC_DIR)/%.h : $(PROJ_SRC_DIR)/%.y $(Verb) $(MV) -f $*.tab.h $(PROJ_SRC_DIR)/$*.h $(Echo) "*** DON'T FORGET TO CHECK IN $*.cpp and $*.h (generated files)" -YaccObjs := $(patsubst %.y,$(ObjDir)/%.o,$(YaccFiles)) -$(YaccObjs): $(ObjDir)/%.o : $(PROJ_SRC_DIR)/%.cpp +# IFF the .y file has changed since it was last checked into CVS, copy the .y +# file to .y.cvs and the generated .cpp/.h file to .cpp.cvs/.h.cvs. We use this +# mechanism so that people without flex can build LLVM by copying the .cvs files +# to the source location and building them. +$(YaccFiles:%.y=$(PROJ_SRC_DIR)/%.cpp.cvs): \ +$(PROJ_SRC_DIR)/%.cpp.cvs: $(PROJ_SRC_DIR)/%.cpp + $(Verb) $(CMP) -s $@ $< || \ + ($(CP) $< $@; \ + $(CP) $(PROJ_SRC_DIR)/$*.l $(PROJ_SRC_DIR)/$*.l.cvs; \ + $(CP) $(PROJ_SRC_DIR)/$*.h $(PROJ_SRC_DIR)/$*.h.cvs) + + +$(YaccFiles:%.y=$(ObjDir)/%.o): $(ObjDir)/%.o : $(PROJ_SRC_DIR)/%.cpp -YaccOutput := $(addprefix $(patsubst %.y,%,$(YaccFiles)),.output) +YaccOutput := $(YaccFiles:%.y=%.output) clean-local:: -$(Verb) $(RM) -f $(YaccOutput) |