On 20/03/19 14:05 -0700, Thomas Rodgers wrote:
Fixed a failing test.
Thanks. Apart from the changelog issue I mentioned on IRC, the only other required change I see is in include/Makefile.am: @@ -1480,7 +1512,9 @@ install-headers: $(mkinstalldirs) $(DESTDIR)${host_installdir}/../ext for file in ${ext_host_headers}; do \ $(INSTALL_DATA) $${file} $(DESTDIR)${host_installdir}/../ext; done - + $(mkinstalldirs) ($DESTDIR)${gxx_include_dir}/${pstl_builddir} This needs to be $(DESTDIR) not ($DESTDIR). *** I also see a couple of things that we probably can't fix for now, but I'll mention them anyway for later consideration. In <bits/glue_execution_defs.h> there's a local include using "" instead of <> (see PR libstdc++/88066 for a similar case I changed recently): #include "execution_defs.h" We could fix that one, but then *all* the relative includes in include/pstl/* use "" too. Do you think upstream would change to use #include <pstl/blah.h> instead of #include "blah.h" ? It looks like upstream uses <pstl/include/...> instead so maybe that's something to change in your script to import the upstream code. Even if we fix it, TBB headers use "" instead of <>. And it might not be a problem for any compiler except GCC, because only we support the silly -I- option that makes this matter. I also noticed that simply including <execution> (even if you don't use anything from it) will cause a link-time dependency on TBB: /usr/bin/ld: /tmp/ccd7w5Oo.o: in function `tbb::interface7::task_arena::current_thread_index()': /usr/include/tbb/task_arena.h:358: undefined reference to `tbb::interface7::internal::task_arena_base::internal_current_slot()' collect2: error: ld returned 1 exit status This dependency comes from <tbb/partioner.h> which is included by <tbb/parallel_scan.h> which is included by <bits/execution_defs.h>. I think that's OK for now, as no existing code using GCC includes the <execution> header (because it doesn't exist yet). It would be good if we can find a way to solve that eventually though. Maybe the eventual solution will just be a non-TBB backend using OpenMP. Exporting something like this from libstdc++.so would work, but is disgusting (and presumably "tbb::interface7" changes from release to release?"): extern "C" [[__gnu__::__weak__]] int _ZN3tbb10interface78internal15task_arena_base21internal_current_slotEv() { return -1; }