Re: [PATCH v4 09/15] bugreport: generate config safelist based on docs

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On Fri, Dec 13, 2019 at 02:57:17PM -0800, Junio C Hamano wrote:
> Emily Shaffer <emilyshaffer@xxxxxxxxxx> writes:
> 
> > diff --git a/Makefile b/Makefile
> > index c49f55a521..76dc51e2b1 100644
> > --- a/Makefile
> > +++ b/Makefile
> > @@ -651,7 +651,7 @@ install-perl-script: $(SCRIPT_PERL_GEN)
> >  install-python-script: $(SCRIPT_PYTHON_GEN)
> >  	$(INSTALL) $^ '$(DESTDIR_SQ)$(gitexec_instdir_SQ)'
> >  
> > -.PHONY: clean-perl-script clean-sh-script clean-python-script
> > +.PHONY: clean-perl-script clean-sh-script clean-python-script clean-script-dependencies
> >  clean-sh-script:
> >  	$(RM) $(SCRIPT_SH_GEN)
> >  clean-perl-script:
> > @@ -817,6 +817,7 @@ VCSSVN_LIB = vcs-svn/lib.a
> >  
> >  GENERATED_H += config-list.h
> >  GENERATED_H += command-list.h
> > +GENERATED_H += bugreport-config-safelist.h
> 
> OK.
> 
> >  LIB_H := $(sort $(patsubst ./%,%,$(shell git ls-files '*.h' ':!t/' ':!Documentation/' 2>/dev/null || \
> >  	$(FIND) . \
> > @@ -2161,6 +2162,12 @@ command-list.h: $(wildcard Documentation/git*.txt) Documentation/*config.txt Doc
> >  		$(patsubst %,--exclude-program %,$(EXCLUDED_PROGRAMS)) \
> >  		command-list.txt >$@+ && mv $@+ $@
> >  
> > +bugreport-config-safelist.h: generate-bugreport-config-safelist.sh
> > +
> > +bugreport-config-safelist.h: Documentation/config/*.txt
> > +	$(QUIET_GEN)$(SHELL_PATH) ./generate-bugreport-config-safelist.sh \
> > +		>$@+ && mv $@+ $@
> 
> OK.
> 
> >  SCRIPT_DEFINES = $(SHELL_PATH_SQ):$(DIFF_SQ):$(GIT_VERSION):\
> >  	$(localedir_SQ):$(NO_CURL):$(USE_GETTEXT_SCHEME):$(SANE_TOOL_PATH_SQ):\
> >  	$(gitwebdir_SQ):$(PERL_PATH_SQ):$(SANE_TEXT_GREP):$(PAGER_ENV):\
> 
> But bugreport.o needs this *.h file generated before a compiler
> attempts to produce it out of bugreport.c; that dependency is
> missing from this update to the Makefile.

Hm. Somewhere I misformatted my commits, then. My goal was to add the
new header here, but not add it as a dependency to anybody; then, in the
next commit, add it as a dependency to git-bugreport and start to use it
(commit 1: make the thing; commit 2: use the thing). But now when I look
at the next commit, I don't see a Makefile change. So I missed something
while I was shuffling around fixups.  Thanks for noticing.

> 
> > @@ -2791,7 +2798,7 @@ $(SP_OBJ): %.sp: %.c GIT-CFLAGS FORCE
> >  .PHONY: sparse $(SP_OBJ)
> >  sparse: $(SP_OBJ)
> >  
> > -GEN_HDRS := config-list.h command-list.h unicode-width.h
> > +GEN_HDRS := config-list.h command-list.h unicode-width.h bugreport-config-safelist.h
> >  EXCEPT_HDRS := $(GEN_HDRS) compat/% xdiff/%
> >  ifndef GCRYPT_SHA256
> >  	EXCEPT_HDRS += sha256/gcrypt.h
> > @@ -3117,7 +3124,8 @@ clean: profile-clean coverage-clean cocciclean
> >  	$(RM) $(HCC)
> >  	$(RM) -r bin-wrappers $(dep_dirs)
> >  	$(RM) -r po/build/
> > -	$(RM) *.pyc *.pyo */*.pyc */*.pyo config-list.h command-list.h
> > +	$(RM) *.pyc *.pyo */*.pyc */*.pyo
> > +	$(RM) config-list.h command-list.h bugreport-config-safelist.h
> 
> It is kind of sad that GEN_HDRS defines the list of build artifact
> that we should be able to clean, and then we manually list them to
> be removed here independently.  Can we fix it up too?

Yeah, I can do that. I thought so too when I was updating this.

I *think* what happened is that when I split config-list away (in the
earleir commit in this chain) I didn't notice that command-list.h was
already in GEN_HDRS, and instead just grepped Makefile for
"command-list.h" and added config-list.h next to it. So I'll try to fix
it much earlier, in that commit, and then simply add to the appropriate
variables in this commit.

> 
> We probably clean up the build/update procedure around unicode-width.h
> before we can do so, probably.  It may be generatable using contrib/
> script, but as far as our normal build is concerned, it is a tracked
> source and not part of the build byproducts, so we probably would
> want to remove it from GEN_HDRS.  When that happens, we can $(RM)
> all of the $(GEN_HDRS) in the "clean" target.

Noted. Thanks.

 - Emily



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