Date: Mon, 15 Dec 2025 17:00:10 +0000 Message-ID: <69403e9a.c6f4.14cd4b50@gitrepo.freebsd.org>
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The branch stable/14 has been updated by jrtc27: URL: https://cgit.FreeBSD.org/src/commit/?id=6559b303a34b60b2cc2836bc376bec27f3df5b8a commit 6559b303a34b60b2cc2836bc376bec27f3df5b8a Author: Jessica Clarke <jrtc27@FreeBSD.org> AuthorDate: 2024-10-18 12:59:48 +0000 Commit: Jessica Clarke <jrtc27@FreeBSD.org> CommitDate: 2025-12-15 16:58:43 +0000 lib/clang: Commit cleaned-up workaround for building on RISC-V There is a long-standing issue on RISC-V around --gc-sections when statically linking, which affects the bootstrap build of LLVM. Since fixing this properly has remained a TODO for years, commit the workaround with documentation so that building natively from source works out of the box. PR: 258358 MFC after: 1 week (cherry picked from commit 7aa6667623bef7306009d50a571e5e8c7766a174) --- lib/clang/llvm.build.mk | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/lib/clang/llvm.build.mk b/lib/clang/llvm.build.mk index 7b16f4485340..2520637e2d06 100644 --- a/lib/clang/llvm.build.mk +++ b/lib/clang/llvm.build.mk @@ -109,6 +109,14 @@ CFLAGS+= -fdata-sections LDFLAGS+= -Wl,-dead_strip .else LDFLAGS+= -Wl,--gc-sections +# XXX: --gc-sections strips the ELF brand note and on RISC-V the OS/ABI ends up +# as NONE, so for statically-linked binaries, i.e. lacking an interpreter, +# get_brandinfo finds nothing and (f)execve fails with ENOEXEC. Work around +# this by manually setting the OS/ABI field via the emulation. +.if ${MACHINE_ARCH:Mriscv64*} != "" && ${NO_SHARED:Uno:tl} != "no" && \ + (${.MAKE.OS} == "FreeBSD" || !defined(BOOTSTRAPPING)) +LDFLAGS+= -Wl,-m,elf64lriscv_fbsd +.endif .endif CXXSTD?= c++17help
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