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authorJohn Criswell <criswell@uiuc.edu>2003-08-05 21:21:58 +0000
committerJohn Criswell <criswell@uiuc.edu>2003-08-05 21:21:58 +0000
commit75a005ff4c33cdec161edc6d0be162f2ad3215bc (patch)
treea0e75c1e415951a1d52483b45a4852f770a1baf9 /Makefile.common
parent11a49a722f657294f38865019af51f82dc31c1c3 (diff)
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Switched from using diff to cmp for two reasons:
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
Diffstat (limited to 'Makefile.common')
-rw-r--r--Makefile.common6
1 files changed, 3 insertions, 3 deletions
diff --git a/Makefile.common b/Makefile.common
index c3ed841492..0eb4b885fc 100644
--- a/Makefile.common
+++ b/Makefile.common
@@ -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