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SubjectRe: [patch 1/8] extend make headers_check to detect more problems
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On Mon, 2006-09-18 at 08:21 +0200, Sam Ravnborg wrote:
> Can't we do this with a hdrchk$$$ filename to avoid using
> random entropy for each compile?

I'd like to move to a scheme where we do headers_install and
headers_check _without_ starting with a rm -rf
$(HDR_INSTALL_PATH)/include.

We could probably do it by adding a rule along the lines of
$(filter-out $(unifdef-y) $(header-y),$(wildcard $(INSTALL_HDR_PATH)/$(dst)/*.h):
rm $@
... i.e. remove every .h file from the destination directory except the
ones we just created.

Then we can make $(INSTALL_HDR_PATH)/$(dst)/%.h depend on
$(srctree)/$(src)/%.h so that it doesn't get re-exported unless it's
changed. And we can keep a stamp file around (or the output of the test
compilation after Arnd's patch) which shows that the _check_ step has
been done too. Something like .checked.%.h

After we do that, a second invocation of 'make headers_check' should
have nothing to do, which will encourage people to keep using it.

--
dwmw2

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