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Implement an alternative way of handling generated lex files in CVS. This

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should solve the "updating cvs when .l files change give me conflict markers
that break my build" issue.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26160 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-02-14 05:12:00 +00:00
parent 77efe27ef1
commit 342567c987
1 changed files with 14 additions and 4 deletions
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18
Makefile.rules
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@ -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)"
# 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)
LexObjs := $(patsubst %.l,$(ObjDir)/%.o,$(LexFiles))
$(LexObjs): $(ObjDir)/%.o : $(PROJ_SRC_DIR)/%.cpp
$(LexFiles:%.l=$(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)