Package: clang-21 Version: 1:21.1.8-3+b1 Severity: normal X-Debbugs-Cc: [email protected], [email protected]
Dear Maintainer, While preparing the rccl 6.4.4.1 package, I noticed that clang is searching for libdl.a, but is not finding this library. On Debian, the libdl.a archive resides within /usr/lib/$multiarch, but clang is merely searching /usr/lib. I'm unsure of the consequences of this failure to find libdl.a. I found that while building on x86_64, I could ensure that the search succeeded by adding -L/usr/lib/x86_64-linux-gnu to the LDFLAGS when building rccl. The compilation command and the error message were: # /usr/bin/hipcc -fPIC -gz -g -O2 -ffile-prefix-map=/root/rccl/rccl=. -Xarch_host -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -Xarch_host -fcf-protection -Wdate-time -D_FORTIFY_SOURCE=2 -O3 -DNDEBUG -shared -v -Wl,-z,relro -Wl,-z,now -Xoffload-linker -mllvm=-amdgpu-kernarg-preload-count=16 -Xlinker --dependency-file=CMakeFiles/rccl.dir/link.d -Wl,-soname,librccl.so.1 -o librccl.so.1.0 CMakeFiles/rccl.dir/hipify/src/bootstrap.cc.o CMakeFiles/rccl.dir/hipify/src/channel.cc.o <...> Debian clang version 21.1.8 (3+b1) Target: x86_64-pc-linux-gnu Thread model: posix InstalledDir: /usr/lib/llvm-21/bin Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/15 Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/15 Candidate multilib: .;@m64 Selected multilib: .;@m64 Found HIP installation: /usr, version 6.4.43484 HIP fatbin symbol search could not find library: libdl.a Found undefined HIP fatbin symbol: __hip_fatbin_1d4e411bebf5072c Found undefined HIP fatbin symbol: __hip_fatbin_232f9491010201eb <...> Found undefined HIP gpubin handle symbol: __hip_gpubin_handle_1d4e411bebf5072c Found undefined HIP gpubin handle symbol: __hip_gpubin_handle_232f9491010201eb <...> Sincerely, Cory Bloor -- System Information: Debian Release: forky/sid APT prefers unstable APT policy: (500, 'unstable') Architecture: amd64 (x86_64) Kernel: Linux 6.17.13+deb13-amd64 (SMP w/12 CPU threads; PREEMPT) Locale: LANG=C, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set Shell: /bin/sh linked to /usr/bin/dash Init: unable to detect Versions of packages clang-21 depends on: ii binutils 2.46-2 ii libc6 2.42-13 ii libc6-dev 2.42-13 ii libclang-common-21-dev 1:21.1.8-3+b1 ii libclang-cpp21 1:21.1.8-3+b1 ii libclang1-21 1:21.1.8-3+b1 ii libgcc-15-dev 15.2.0-14 ii libgcc-s1 15.2.0-14 ii libllvm21 1:21.1.8-3+b1 ii libobjc-15-dev 15.2.0-14 ii libstdc++-15-dev 15.2.0-14 ii libstdc++6 15.2.0-14 ii llvm-21-linker-tools 1:21.1.8-3+b1 Versions of packages clang-21 recommends: ii clang-tools-21 1:21.1.8-3+b1 pn llvm-21-dev <none> ii python3 3.13.9-3 Versions of packages clang-21 suggests: pn clang-21-doc <none> pn wasi-libc <none> -- no debconf information
