Mercurial > octave
changeset 22008:5b521e104f2a
avoid updating parser source files unnecessarily
* libinterp/module.mk (%.cc %.h : %.yy): Use tmp filename and
move-if-change for parser source file.
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Thu, 30 Jun 2016 14:16:00 -0400 |
| parents | 0e31c85c3969 |
| children | 1fc285f93592 |
| files | libinterp/module.mk |
| diffstat | 1 files changed, 3 insertions(+), 1 deletions(-) [+] |
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--- a/libinterp/module.mk Thu Jun 30 13:52:28 2016 -0400 +++ b/libinterp/module.mk Thu Jun 30 14:16:00 2016 -0400 @@ -219,8 +219,10 @@ ## Cancel the suffix rule and use a pattern rule instead. .yy.cc: +## The ylwrap script always updates the parser source file so we use a temporary file +## name and our own move-if-change rule for that file. %.cc %.h : %.yy - $(AM_V_YACC)$(am__skipyacc) $(SHELL) $(YLWRAP) $< y.tab.c $*.cc y.tab.h $*.h y.output $*.output -- $(YACCCOMPILE) + $(AM_V_YACC)$(am__skipyacc) $(SHELL) $(YLWRAP) $< y.tab.c $*.cc-t y.tab.h $*.h y.output $*.output -- $(YACCCOMPILE) && $(call move_if_change_rule,$*.cc-t,$*.cc) ## Special rules: ## Mostly for sources which must be built before rest of compilation.