Date: Fri, 02 Jan 2026 20:53:14 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 287447] libllvm, libclang, and liblldb converted into shared libraries - performance degradation Message-ID: <bug-287447-227-fWd7F403ee@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-287447-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=287447 --- Comment #11 from commit-hook@FreeBSD.org --- A commit in branch stable/14 references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=908ca4f6af8a95d6c6ae65caed4371f96afb6409 commit 908ca4f6af8a95d6c6ae65caed4371f96afb6409 Author: Dimitry Andric <dim@FreeBSD.org> AuthorDate: 2025-06-18 10:06:25 +0000 Commit: Dimitry Andric <dim@FreeBSD.org> CommitDate: 2026-01-02 20:44:10 +0000 src.conf: Add WITH_LLVM_LINK_STATIC_LIBRARIES build knob In commit 2e47f35be5dc libllvm, libclang and liblldb were converted into private shared libraries. This allowed clang, lld, lldb, and other llvm tools to be linked against these shared libraries, which makes them smaller and avoids duplication. However, this also comes at the cost of some performance, since the dynamic libraries are quite large, and contain lots of long symbols (mangled C++ identifiers). Add a WITH_LLVM_LINK_STATIC_LIBRARIES build knob that can be used to go back to the previous behavior: libllvm, libclang and liblldb are built as internal static libraries, i.e. only available during buildworld, and fully linked into the various executables such as clang, lld, etc. PR: 287447 Reviewed by: emaste MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D50956 (cherry picked from commit 8d5a11cd0137d3ad70f6b06e063ea91a776d510a) lib/clang/libclang/Makefile | 9 ++++----- lib/clang/liblldb/Makefile | 14 ++++++++++++-- lib/clang/libllvm/Makefile | 10 ++++------ share/man/man5/src.conf.5 | 9 ++++++++- share/mk/src.opts.mk | 1 + tools/build/mk/OptionalObsoleteFiles.inc | 11 ++++++++--- tools/build/options/WITH_LLVM_LINK_STATIC_LIBRARIES (new) | 6 ++++++ usr.bin/clang/Makefile.inc | 2 +- usr.bin/clang/clang.prog.mk | 2 +- usr.bin/clang/lld/Makefile | 2 +- usr.bin/clang/lldb-server/Makefile | 5 +++++ usr.bin/clang/lldb/Makefile | 5 +++++ usr.bin/clang/llvm.prog.mk | 5 +++++ 13 files changed, 61 insertions(+), 20 deletions(-) -- You are receiving this mail because: You are the assignee for the bug.home | help
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