Bug#1129213: LLVM built with the wrong baseline for armhf

Package: src:llvm-toolchain-21
Version: 1:21.1.8-3
Severity: serious
Tags: sid forky
X-Debbugs-CC: [email protected]

seen while looking at build logs:

--target=armv8l-unknown-linux-gnueabihf

but Debian's baseline is armv7 based.

[...]
FAILED: [code=1] openmp/runtime/src/CMakeFiles/omp.dir/kmp_alloc.cpp.o
/build/reproducible-path/llvm-toolchain-21-21.1.8/build-llvm/bin/clang++ 
--target=armv8l-unknown-linux-gnueabihf -D_FILE_OFFSET_BITS=64 
-D_LARGEFILE_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS 
-D__STDC_LIMIT_MACROS -Domp_EXPORTS 
-I/build/reproducible-path/llvm-toolchain-21-21.1.8/build-llvm/runtimes/runtimes-bins/openmp/runtime/src 
-I/build/reproducible-path/llvm-toolchain-21-21.1.8/openmp/runtime/src 
-I/build/reproducible-path/llvm-toolchain-21-21.1.8/openmp/runtime/src/i18n 
-I/build/reproducible-path/llvm-toolchain-21-21.1.8/openmp/runtime/src/include 
-I/build/reproducible-path/llvm-toolchain-21-21.1.8/openmp/runtime/src/thirdparty/ittnotify 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -Wno-unused-command-line-argument 
-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_TIME_BITS=64 -Wdate-time 
-D_FORTIFY_SOURCE=2 -fPIC -fno-semantic-interposition 
-fvisibility-inlines-hidden -Werror=date-time 
-Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter 
-Wwrite-strings -Wcast-qual -Wmissing-field-initializers 
-Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type 
-Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override 
-Wstring-conversion -Wmisleading-indentation -Wctad-maybe-unsupported 
-fdiagnostics-color -ffunction-sections -fdata-sections 
-fdebug-prefix-map=/build/reproducible-path/llvm-toolchain-21-21.1.8/build-llvm/runtimes/runtimes-bins=../../../ 
-fdebug-prefix-map=/build/reproducible-path/llvm-toolchain-21-21.1.8/= 
-no-canonical-prefixes 
-ffile-prefix-map=/build/reproducible-path/llvm-toolchain-21-21.1.8/build-llvm/runtimes/runtimes-bins=../../../ 
-ffile-prefix-map=/build/reproducible-path/llvm-toolchain-21-21.1.8/= 
-no-canonical-prefixes -Wall -fcolor-diagnostics -Wcast-qual 
-Wformat-pedantic -Wimplicit-fallthrough -Wsign-compare -Wno-extra 
-Wno-pedantic -fno-semantic-interposition -fdata-sections -O3 -DNDEBUG 
-std=c++17 -fPIC   -D _GNU_SOURCE -D _REENTRANT -D_LARGEFILE_SOURCE 
-D_FILE_OFFSET_BITS=64 -D_TIME_BITS=64 -Wdate-time -D_FORTIFY_SOURCE=2 
-U_GLIBCXX_ASSERTIONS -fno-exceptions -fno-rtti 
-Wno-covered-switch-default -Wno-frame-address -Wno-strict-aliasing 
-Wno-switch -Wno-uninitialized -Wno-return-type-c-linkage -Wno-cast-qual 
-Wno-int-to-void-pointer-cast -m32 -MD -MT 
openmp/runtime/src/CMakeFiles/omp.dir/kmp_alloc.cpp.o -MF 
openmp/runtime/src/CMakeFiles/omp.dir/kmp_alloc.cpp.o.d -o 
openmp/runtime/src/CMakeFiles/omp.dir/kmp_alloc.cpp.o -c 
/build/reproducible-path/llvm-toolchain-21-21.1.8/openmp/runtime/src/kmp_alloc.cpp
In file included from 
/build/reproducible-path/llvm-toolchain-21-21.1.8/openmp/runtime/src/kmp_alloc.cpp:13:
In file included from 
/build/reproducible-path/llvm-toolchain-21-21.1.8/openmp/runtime/src/kmp.h:17:
In file included from 
/build/reproducible-path/llvm-toolchain-21-21.1.8/build-llvm/runtimes/runtimes-bins/openmp/runtime/src/kmp_config.h:14:
/build/reproducible-path/llvm-toolchain-21-21.1.8/openmp/runtime/src/kmp_platform.h:295:2: 
error: Unknown or unsupported architecture
   295 | #error Unknown or unsupported architecture
       |  ^
In file included from 
/build/reproducible-path/llvm-toolchain-21-21.1.8/openmp/runtime/src/kmp_alloc.cpp:13:
In file included from 
/build/reproducible-path/llvm-toolchain-21-21.1.8/openmp/runtime/src/kmp.h:92:
/build/reproducible-path/llvm-toolchain-21-21.1.8/openmp/runtime/src/kmp_os.h:189:2: 
error: "Can't determine size_t printf format specifier."
   189 | #error "Can't determine size_t printf format specifier."
       |  ^
2 errors generated.
[2555/2914] 
/build/reproducible-path/llvm-toolchain-21-21.1.8/build-llvm/bin/clang++ 
--target=armv8l-unknown-linux-gnueabihf -D_FILE_OFFSET_BITS=64 
-D_LARGEFILE_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS 
-D__STDC_LIMIT_MACROS -Domp_EXPORTS 
-I/build/reproducible-path/llvm-toolchain-21-21.1.8/build-llvm/runtimes/runtimes-bins/openmp/runtime/src 
-I/build/reproducible-path/llvm-toolchain-21-21.1.8/openmp/runtime/src 
-I/build/reproducible-path/llvm-toolchain-21-21.1.8/openmp/runtime/src/i18n 
-I/build/reproducible-path/llvm-toolchain-21-21.1.8/openmp/runtime/src/include 
-I/build/reproducible-path/llvm-toolchain-21-21.1.8/openmp/runtime/src/thirdparty/ittnotify 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -Wno-unused-command-line-argument 
-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_TIME_BITS=64 -Wdate-time 
-D_FORTIFY_SOURCE=2 -fPIC -fno-semantic-interposition 
-fvisibility-inlines-hidden -Werror=date-time 
-Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter 
-Wwrite-strings -Wcast-qual -Wmissing-field-initializers 
-Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type 
-Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override 
-Wstring-conversion -Wmisleading-indentation -Wctad-maybe-unsupported 
-fdiagnostics-color -ffunction-sections -fdata-sections 
-fdebug-prefix-map=/build/reproducible-path/llvm-toolchain-21-21.1.8/build-llvm/runtimes/runtimes-bins=../../../ 
-fdebug-prefix-map=/build/reproducible-path/llvm-toolchain-21-21.1.8/= 
-no-canonical-prefixes 
-ffile-prefix-map=/build/reproducible-path/llvm-toolchain-21-21.1.8/build-llvm/runtimes/runtimes-bins=../../../ 
-ffile-prefix-map=/build/reproducible-path/llvm-toolchain-21-21.1.8/= 
-no-canonical-prefixes -Wall -fcolor-diagnostics -Wcast-qual 
-Wformat-pedantic -Wimplicit-fallthrough -Wsign-compare -Wno-extra 
-Wno-pedantic -fno-semantic-interposition -fdata-sections -O3 -DNDEBUG 
-std=c++17 -fPIC   -D _GNU_SOURCE -D _REENTRANT -D_LARGEFILE_SOURCE 
-D_FILE_OFFSET_BITS=64 -D_TIME_BITS=64 -Wdate-time -D_FORTIFY_SOURCE=2 
-U_GLIBCXX_ASSERTIONS -fno-exceptions -fno-rtti 
-Wno-covered-switch-default -Wno-frame-address -Wno-strict-aliasing 
-Wno-switch -Wno-uninitialized -Wno-return-type-c-linkage -Wno-cast-qual 
-Wno-int-to-void-pointer-cast -m32 -MD -MT 
openmp/runtime/src/CMakeFiles/omp.dir/kmp_atomic.cpp.o -MF 
openmp/runtime/src/CMakeFiles/omp.dir/kmp_atomic.cpp.o.d -o 
openmp/runtime/src/CMakeFiles/omp.dir/kmp_atomic.cpp.o -c 
/build/reproducible-path/llvm-toolchain-21-21.1.8/openmp/runtime/src/kmp_atomic.cpp
FAILED: [code=1] openmp/runtime/src/CMakeFiles/omp.dir/kmp_atomic.cpp.o