I want to build LLVM-based toolchain with Musl, I have LLVM sources with clang and lld (under `tools` directory) and libunwind, compiler-rt, libcxx and libcxxabi (under `projects` directory). All are the latest versions cloned from GitHub mirror, branch `master`.
I'm trying to configure with the following options:
CLANG_DEFAULT_CXX_STDLIB = libc++
CLANG_DEFAULT_RTLIB = compiler-rt
CLANG_DEFAULT_LINKER = lld
LLVM_DEFAULT_TARGET_TRIPLE=x86_64-pc-linux-musl
I use cmake to configure and ninja to build.
It configures fine and builds, but I need libcompiler_rt.so and it is not among build targets, so it is not built and installed.
I think it is a bug and libcompiler_rt.so should be built. I don't have a bugzilla account, so I would appreciate if someone reports it for me.
I want to build LLVM-based toolchain with Musl, I have LLVM sources with clang and lld (under `tools` directory) and libunwind, compiler-rt, libcxx and libcxxabi (under `projects` directory). All are the latest versions cloned from GitHub mirror, branch `master`.
I'm trying to configure with the following options:
CLANG_DEFAULT_CXX_STDLIB = libc++
CLANG_DEFAULT_RTLIB = compiler-rt
CLANG_DEFAULT_LINKER = lld
LLVM_DEFAULT_TARGET_TRIPLE=x86_64-pc-linux-musl
I use cmake to configure and ninja to build.
It configures fine and builds, but I need libcompiler_rt.so and it is not among build targets, so it is not built and installed.
I think it is a bug and libcompiler_rt.so should be built. I don't have a bugzilla account, so I would appreciate if someone reports it for me.
I don't think a single library that encompasses all of compiler-rt exists, or
even *can* exist. E.g, the runtimes for ASan and TSan both export interceptors
for common library routines which would be mutually incompatible. So, I don't
think this is a bug.
If you want to build all of compiler-rt, try building the phony 'compiler-rt'
target. All of the libraries you need will show up in:
I'm sure that this library can and should exist. You can search it by it's name and it is mentioned a lot on the Internet. Now I've got a linking problem when building musl:
(function cpow): undefined symbol '__muldc3'
(function cpowf): undefined symbol '__mulsc3'
(function cpowl): undefined symbol '__mulxc3'
(function csqrt): undefined symbol '__muldc3'
I'm pretty sure this problem is solved by just adding -lcompiler_rt to LDFLAGS.
I want to build LLVM-based toolchain with Musl, I have LLVM sources with clang and lld (under `tools` directory) and libunwind, compiler-rt, libcxx and libcxxabi (under `projects` directory). All are the latest versions cloned from GitHub mirror, branch `master`.
I'm trying to configure with the following options:
CLANG_DEFAULT_CXX_STDLIB = libc++
CLANG_DEFAULT_RTLIB = compiler-rt
CLANG_DEFAULT_LINKER = lld
LLVM_DEFAULT_TARGET_TRIPLE=x86_64-pc-linux-musl
I use cmake to configure and ninja to build.
It configures fine and builds, but I need libcompiler_rt.so and it is not among build targets, so it is not built and installed.
I think it is a bug and libcompiler_rt.so should be built. I don't have a bugzilla account, so I would appreciate if someone reports it for me.
I don't think a single library that encompasses all of compiler-rt exists, or
even *can* exist. E.g, the runtimes for ASan and TSan both export interceptors
for common library routines which would be mutually incompatible. So, I don't
think this is a bug.
If you want to build all of compiler-rt, try building the phony 'compiler-rt'
target. All of the libraries you need will show up in:
<build-dir>/lib/clang/<version>/lib
best,
vedant
Regards,
Dmitry
I'm sure that this library can and should exist.
I think we're talking about different things.
It looks like you just want the builtins: this exists.
E.g on Darwin, you can find muldc3 in libclang_rt.hard_pic.a.
You can search it by it's name and it is mentioned a lot on the Internet. Now I've got a linking problem when building musl:
(function cpow): undefined symbol '__muldc3'
(function cpowf): undefined symbol '__mulsc3'
(function cpowl): undefined symbol '__mulxc3'
(function csqrt): undefined symbol '__muldc3'
I'm pretty sure this problem is solved by just adding -lcompiler_rt to LDFLAGS.
Did that work?
If not, try building the builtins for your platform, e.g:
Thank you, I've built musl using the builtins. It was just misleading that musl's configure script tries using `-lcompiler_rt` option with linker. It works perfectly fine now.
Thank you, I've built musl using the builtins. It was just misleading that musl's configure script tries using `-lcompiler_rt` option with linker. It works perfectly fine now.