diff options
| author | Chris Lattner <sabre@nondot.org> | 2003-08-04 19:47:06 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2003-08-04 19:47:06 +0000 |
| commit | a328f887c70786bdbe8e75bffa4387dae77bb6b3 (patch) | |
| tree | 0a37956864ae4a5caf77342d073bc06cd409cfef /Makefile.common | |
| parent | 5d3f1f01aa3106561a94e77fd60f2fd70c3fb955 (diff) | |
* Don't print out HOW we are running Flex unless in verbose mode. We already
hide the bison command line.
* If running flex or bison gives us the files we already have, don't overwrite
the ones we have, which cause unnecessary compilation. I demand the ability
to make meaningless changes without penalty!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7571 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'Makefile.common')
| -rw-r--r-- | Makefile.common | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/Makefile.common b/Makefile.common index 2612e6fc65..9dfbdffe24 100644 --- a/Makefile.common +++ b/Makefile.common @@ -766,10 +766,15 @@ YACC_OUTPUT = $(addprefix $(YACC_FILES:%.y=%), .h .cpp .output) # FIXME. (f.e. char Buffer[10000]; ) # %.cpp: %.l - $(FLEX) -t $< | $(SED) '/^find_rule/d' | \ + @echo Flex\'ing $<... + $(VERB) $(FLEX) -t $< | $(SED) '/^find_rule/d' | \ $(SED) 's/void yyunput/inline void yyunput/' | \ $(SED) 's/void \*yy_flex_realloc/inline void *yy_flex_realloc/' | \ - $(SED) 's/#define YY_BUF_SIZE 16384/#define YY_BUF_SIZE (16384*64)/' > $@ + $(SED) 's/#define YY_BUF_SIZE 16384/#define YY_BUF_SIZE (16384*64)/' \ + > $@.tmp + $(VERB) diff -q $@ $@.tmp || ${MV} -f $@.tmp $@ + @# remove the output of flex if it didn't get moved over... + @rm -f $@.tmp # Rule for building the bison parsers... %.c: %.y # Cancel built-in rules for yacc @@ -777,8 +782,10 @@ YACC_OUTPUT = $(addprefix $(YACC_FILES:%.y=%), .h .cpp .output) %.cpp %.h : %.y @echo Bison\'ing $<... $(VERB) $(BISON) -v -d -p $(<:%Parser.y=%) $*.y - $(VERB) ${MV} -f $*.tab.c $*.cpp - $(VERB) ${MV} -f $*.tab.h $*.h + $(VERB) diff -q $*.tab.c $*.cpp || ${MV} -f $*.tab.c $*.cpp + $(VERB) diff -q $*.tab.h $*.h || ${MV} -f $*.tab.h $*.h + @# If the files were not updated, don't leave them lying around... + @rm -f $*.tab.c $*.tab.h # To create the directories... %/.dir: |