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Switched from using diff to cmp for two reasons:

Browse Source 
o Not all versions of diff have the -q option
	o The cmp program is probably faster than diff
Fixed the logic that only copies the file over if no differences are found.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7615 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
John Criswell 2003-08-05 21:21:58 +00:00
parent 11a49a722f
commit 75a005ff4c
2 changed files with 6 additions and 6 deletions
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6
Makefile.common
View File

@ -773,7 +773,7 @@ YACC_OUTPUT = $(addprefix $(YACC_FILES:%.y=%), .h .cpp .output)
$(SED) 's/void \*yy_flex_realloc/inline void *yy_flex_realloc/' | \
$(SED) 's/#define YY_BUF_SIZE 16384/#define YY_BUF_SIZE (16384*64)/' \
> $@.tmp
$(VERB) diff -q $@ $@.tmp > /dev/null || ${MV} -f $@.tmp $@
$(VERB) cmp $@ $@.tmp > /dev/null && ${MV} -f $@.tmp $@
@# remove the output of flex if it didn't get moved over...
@rm -f $@.tmp
@ -783,8 +783,8 @@ YACC_OUTPUT = $(addprefix $(YACC_FILES:%.y=%), .h .cpp .output)
%.cpp %.h : %.y
@echo Bison\'ing $<...
$(VERB) $(BISON) -v -d -p $(<:%Parser.y=%) $*.y
$(VERB) diff -q $*.tab.c $*.cpp > /dev/null || ${MV} -f $*.tab.c $*.cpp
$(VERB) diff -q $*.tab.h $*.h > /dev/null || ${MV} -f $*.tab.h $*.h
$(VERB) cmp $*.tab.c $*.cpp > /dev/null && ${MV} -f $*.tab.c $*.cpp
$(VERB) cmp $*.tab.h $*.h > /dev/null && ${MV} -f $*.tab.h $*.h
@# If the files were not updated, don't leave them lying around...
@rm -f $*.tab.c $*.tab.h

6
Makefile.rules
View File

@ -773,7 +773,7 @@ YACC_OUTPUT = $(addprefix $(YACC_FILES:%.y=%), .h .cpp .output)
$(SED) 's/void \*yy_flex_realloc/inline void *yy_flex_realloc/' | \
$(SED) 's/#define YY_BUF_SIZE 16384/#define YY_BUF_SIZE (16384*64)/' \
> $@.tmp
$(VERB) diff -q $@ $@.tmp > /dev/null || ${MV} -f $@.tmp $@
$(VERB) cmp $@ $@.tmp > /dev/null && ${MV} -f $@.tmp $@
@# remove the output of flex if it didn't get moved over...
@rm -f $@.tmp
@ -783,8 +783,8 @@ YACC_OUTPUT = $(addprefix $(YACC_FILES:%.y=%), .h .cpp .output)
%.cpp %.h : %.y
@echo Bison\'ing $<...
$(VERB) $(BISON) -v -d -p $(<:%Parser.y=%) $*.y
$(VERB) diff -q $*.tab.c $*.cpp > /dev/null || ${MV} -f $*.tab.c $*.cpp
$(VERB) diff -q $*.tab.h $*.h > /dev/null || ${MV} -f $*.tab.h $*.h
$(VERB) cmp $*.tab.c $*.cpp > /dev/null && ${MV} -f $*.tab.c $*.cpp
$(VERB) cmp $*.tab.h $*.h > /dev/null && ${MV} -f $*.tab.h $*.h
@# If the files were not updated, don't leave them lying around...
@rm -f $*.tab.c $*.tab.h