On Tue, Mar 16, 2021 at 08:12:14AM +0100, Emmanuel Vadot wrote:
> On Tue, 16 Mar 2021 08:52:07 +0200
> Konstantin Belousov <kostik...@gmail.com> wrote:
> 
> > On Tue, Mar 16, 2021 at 06:13:21AM +0000, Emmanuel Vadot wrote:
> > > The branch main has been updated by manu:
> > > 
> > > URL: 
> > > https://cgit.FreeBSD.org/src/commit/?id=0006530aa14b9df56f88df7d819fae89b115d865
> > > 
> > > commit 0006530aa14b9df56f88df7d819fae89b115d865
> > > Author:     Emmanuel Vadot <m...@freebsd.org>
> > > AuthorDate: 2021-03-16 06:12:53 +0000
> > > Commit:     Emmanuel Vadot <m...@freebsd.org>
> > > CommitDate: 2021-03-16 06:12:53 +0000
> > > 
> > >     include: Remove symlink installation
> > >     
> > >     headers could be installed as symlink to the source tree instead of 
> > > copies.
> > >     Remove the possibility to do that.
> > >     This make the makefile easier to read and to maintain and also don't 
> > > duplicate
> > >     code.
> > >     
> > >     While here remove some directories from LSBUDIRS as we already 
> > > install them using
> > >     the INCS stuff.
> > 
> > This might make Makefiles easier to read, but also it makes practically
> > very hard to develop rtld/libc/libthr. After any system header
> > modification, full buildworld or at least kernel-toolchain run is
> > required to get buildenv populated with the new headers.
> 
>  Can you share what you did before so I can cook a patch that restore
> this behavior in a better way than it was done before ?

I did
$ make buildworld <- this was done relatively irregularly
$ make buildenv
[Edit whatever I needed, typically in sys/sys and libexec/rtld-elf]
<nested env sh>$ cd libexec/rtld-elf
<nested env sh>$ make DEBUG_FLAGS=-g WITHOUT_TESTS=yes all
[Check built ld-elf.so.1, more edits]
<nested env sh>$ make ...

Now, if I modify anything in sys/, I have to repopuate staged headers in
the obj directory of buildworld.
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