diff options
Diffstat (limited to 'Makefile.rules')
| -rw-r--r-- | Makefile.rules | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/Makefile.rules b/Makefile.rules index 9a3c505075..b6178d63e5 100644 --- a/Makefile.rules +++ b/Makefile.rules @@ -1204,6 +1204,8 @@ ifneq ($(LexFiles),) %.c: %.l %.cpp: %.l +all:: $(LexFiles:%.l=$(PROJ_SRC_DIR)/%.cpp.cvs) + # Note the extra sed filtering here, used to cut down on the warnings emited # by GCC. The last line is a gross hack to work around flex aparently not # being able to resize the buffer on a large token input. Currently, for @@ -1217,10 +1219,18 @@ $(PROJ_SRC_DIR)/%.cpp: $(PROJ_SRC_DIR)/%.l $(SED) 's/void \*yy_flex_realloc/inline void *yy_flex_realloc/' | \ $(SED) 's/#define YY_BUF_SIZE 16384/#define YY_BUF_SIZE (16384*64)/' \ > $(PROJ_SRC_DIR)/$*.cpp - $(Echo) "*** DON'T FORGET TO CHECK IN $*.cpp (generated file)" - -LexObjs := $(patsubst %.l,$(ObjDir)/%.o,$(LexFiles)) -$(LexObjs): $(ObjDir)/%.o : $(PROJ_SRC_DIR)/%.cpp + +# IFF the .l file has changed since it was last checked into CVS, copy the .l +# file to .l.cvs and the generated .cpp file to .cpp.cvs. We use this mechanism +# so that people without flex can build LLVM by copying the .cvs files to the +# source location and building them. +$(LexFiles:%.l=$(PROJ_SRC_DIR)/%.cpp.cvs): \ +$(PROJ_SRC_DIR)/%.cpp.cvs: $(PROJ_SRC_DIR)/%.cpp + $(Verb) $(CMP) -s $@ $< || \ + ($(CP) $< $@; $(CP) $(PROJ_SRC_DIR)/$*.l $(PROJ_SRC_DIR)/$*.l.cvs) + +$(LexFiles:%.l=$(ObjDir)/%.o) : \ +$(ObjDir)/%.o : $(PROJ_SRC_DIR)/%.cpp clean-local:: -$(Verb) $(RM) -f $(LexOutput) @@ -1323,7 +1333,7 @@ ifneq ($strip($(filter-out clean clean-local dist-clean,$(MAKECMDGOALS))),) # Get the list of dependency files DependFiles := $(basename $(filter %.cpp %.c %.cc, $(Sources))) -DependFiles := $(patsubst %,$(PROJ_OBJ_DIR)/$(BuildMode)/%.d,$(DependFiles)) +DependFiles := $(DependFiles:%=$(PROJ_OBJ_DIR)/$(BuildMode)/%.d) -include /dev/null $(DependFiles) |