config/unconfig.h is build from config/config.h.in, but the latter
doesn't exist in the repository either. config/unconfig.h is cleaner,
so check it back into the repository, to let non-Unix-sh people be
able to build from the repo.
Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
config/unconfig.h really is no different than the other perlreq files,
so move it into the Makefile. This has the extra advantage that
config/unconfig.h no longer needs to be kept in the source repository.
Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
The clang behavior is sometimes really weird, and extremely hard to
debug, when uninitialized variables are used even if the value cancels
out in an expression. It also depends on optimization level, etc.
-ftrivial-auto-var-init=zero makes the behavior
predictable. Unfortunately it also needs a really weird "enable"
option, and it issues a warning about an unused command line option on
link, which may get promoted to error, so silence the warning before
doing anything else.
Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
clang, unlike gcc, will warn on inline functions which are
unused. This can happen if a function is either intended to be used in
the future, or it is only used under certain config options. Mark
those functions with the "unused" attribute; not only does it quiet
the warning, but it also documents it for the user.
Shuffle around the warning options in configure and add a few more
that are specific to clang.
Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
Set an expression descent limit to 8192, which is more reasonable to
expect to work on most platforms. Furthermore, if getrlimit() exists,
then try to use it to see if we need to further limit the size.
Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
config/config.h as generated by autoconf has #undef directives
commented out, but the autoheader-generated template contains them,
and config/unconfig.h should not contain them. Re-introduce
config/config.h.in, and postprocess it to generate config/unconfig.h
by commenting out all the #undef directives, just as configure does.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
<config/unconfig.h> is generated by autoconf (autoheader), but just
like the autoconf/helpers directory contains files for people who
don't have the proper tools, check this file in.
It should even be less annoying change-wise than the helpers...
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
