woboq codebrowser uses clang tooling, which adds clang system includes
(in Linux::AddClangSystemIncludeArgs()), because none of (-nostdinc,
-nobuiltininc) is set.
And later it will complain with -Wpoison-system-directories for added by
itself includes in InitHeaderSearch::AddUnmappedPath(), because they are
starts from one of the following:
- /usr/include
- /usr/local/include
The interesting thing here is that it got broken only after upgrading to
llvm 16 (in #49678), and the reason for this is that clang 15 build has
system includes that does not trigger the warning -
"/usr/lib/clang/15.0.7/include", while clang 16 has
"/usr/include/clang/16.0.4/include"
So let's simply disable this warning, but only for woboq.
Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>
"The -fexperimental-new-pass-manager and -fno-legacy-pass-manager flags
have been removed. These flags have been silently ignored since Clang
15."
Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>
LTO in Rust produces multiple definition of `rust_eh_personality' (and
few others), and to overcome this --allow-multiple-definition has been
added.
Query for benchmark:
SELECT ignore(BLAKE3(materialize('Lorem ipsum dolor sit amet, consectetur adipiscing elit'))) FROM numbers(1000000000) FORMAT `Null`
upstream : Elapsed: 2.494 sec. Processed 31.13 million rows, 249.08 MB (12.48 million rows/s., 99.86 MB/s.)
upstream + rust lto: Elapsed: 13.56 sec. Processed 191.9 million rows, 1.5400 GB (14.15 million rows/s., 113.22 MB/s.)
llvm BLAKE3 : Elapsed: 3.053 sec. Processed 43.24 million rows, 345.88 MB (14.16 million rows/s., 113.28 MB/s.)
Note, I thought about simply replacing it with BLAKE3 from LLVM, but:
- this will not solve LTO issues for Rust (and in future more libraries
could be added)
- it makes integrating_rust_libraries.md useless (and there is even blog
post)
So instead I've decided to add this quirk (--allow-multiple-definition)
to fix builds.
Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>
This reverts PRs #42470, #47673 and #47744. The problem was that after
the switch to ld64.lld, server binaries build in Debug mode no longer
came up, see the discussion after (*). My attempt to fix it with
`-no_compact_unwind` didn't help.
I also tried
- `-keep_dwarf_unwind`,
- `-unwindlib` (to use the OS unwinder),
- the unwinder in contrib (CMake variable EXCEPTION_HANDLING_LIBRARY)
but w/o success. Just tons of wasted time.
Rolling back to lld as linker on Mac. This will bring back many linker
warnings (#42282) but I rather accept that (temporarily, maybe someone
can figure out how to fix them) than have a broken Debug binary.
(*) https://github.com/ClickHouse/ClickHouse/pull/42470#issuecomment-1312344068
Right now it works for host platforms because of gcc package, that
includes gcc-cross sysroot.
Use bundled sysroot from contrib instead.
Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>
Right now it works for host platforms because of gcc package, that
includes gcc-cross sysroot.
Use bundled sysroot from contrib instead.
Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>
