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fix(build): correct -mno-avx512* flag spelling

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GCC rejects -mno-avx512-4fmaps / -mno-avx512-4vnniw with the dash.
The correct form is -mno-avx5124fmaps / -mno-avx5124vnniw (no dash
between 'avx512' and the sub-feature name). v6.2.0-rc1 failed in CI
with 'unrecognized command-line option' on these two flags; this fixes
the spelling.
This commit is contained in:
Sami Ahmed
2026-08-01 13:42:52 -07:00
parent 8a48b308a8
commit 7ce2debb65
2 changed files with 12 additions and 4 deletions
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cmake/AddCompilerFlags.cmake
+6 -2
View File
@@ -88,13 +88,17 @@ if(CMAKE_SYSTEM_PROCESSOR MATCHES "^(x86_64|amd64|AMD64)$" AND NOT WIN32 AND NOT
# future-proof against the next GCC version autovectorizing # future-proof against the next GCC version autovectorizing
# beyond AVX-512. See references/avx-512-sigill-build-fix.md # beyond AVX-512. See references/avx-512-sigill-build-fix.md
# for the full diagnosis recipe. # for the full diagnosis recipe.
# NB: -mno-avx512*4fmaps / -mno-avx512*4vnniw use NO dash between
# 'avx512' and the sub-feature (correct: -mno-avx5124fmaps). The
# -mno-avx512-4fmaps form (with a dash) is rejected by GCC and
# makes the whole build fail with "unrecognized command-line option".
if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU" OR CMAKE_C_COMPILER_ID STREQUAL "GNU") if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU" OR CMAKE_C_COMPILER_ID STREQUAL "GNU")
add_compile_options( add_compile_options(
-mno-avx512f -mno-avx512pf -mno-avx512er -mno-avx512cd -mno-avx512f -mno-avx512pf -mno-avx512er -mno-avx512cd
-mno-avx512vl -mno-avx512bw -mno-avx512dq -mno-avx512ifma -mno-avx512vl -mno-avx512bw -mno-avx512dq -mno-avx512ifma
-mno-avx512vbmi -mno-avx512vbmi2 -mno-avx512vnni -mno-avx512vbmi -mno-avx512vbmi2 -mno-avx512vnni
-mno-avx512bitalg -mno-avx512vpopcntdq -mno-avx512-4fmaps -mno-avx512bitalg -mno-avx512vpopcntdq
-mno-avx512-4vnniw -mno-avx512vp2intersect -mno-avx5124fmaps -mno-avx5124vnniw -mno-avx512vp2intersect
) )
endif() endif()
endif() endif()
references/avx-512-sigill-build-fix.md
+6 -2
View File
@@ -101,13 +101,17 @@ if(CMAKE_X86_64_BASELINE)
# the whole AVX-512 family so a CI runner's EPYC 7763 (or any # the whole AVX-512 family so a CI runner's EPYC 7763 (or any
# AVX-512-capable build host) cannot leak AVX-512 into a binary # AVX-512-capable build host) cannot leak AVX-512 into a binary
# that needs to run on KVM EPYC, Ryzen 3000, or ARM64. # that needs to run on KVM EPYC, Ryzen 3000, or ARM64.
# NB: -mno-avx512*4fmaps / -mno-avx512*4vnniw use NO dash between
# 'avx512' and the sub-feature (correct: -mno-avx5124fmaps). The
# -mno-avx512-4fmaps form (with a dash) is rejected by GCC and
# makes the whole build fail with "unrecognized command-line option".
if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU" OR CMAKE_C_COMPILER_ID STREQUAL "GNU") if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU" OR CMAKE_C_COMPILER_ID STREQUAL "GNU")
add_compile_options( add_compile_options(
-mno-avx512f -mno-avx512pf -mno-avx512er -mno-avx512cd -mno-avx512f -mno-avx512pf -mno-avx512er -mno-avx512cd
-mno-avx512vl -mno-avx512bw -mno-avx512dq -mno-avx512ifma -mno-avx512vl -mno-avx512bw -mno-avx512dq -mno-avx512ifma
-mno-avx512vbmi -mno-avx512vbmi2 -mno-avx512vnni -mno-avx512vbmi -mno-avx512vbmi2 -mno-avx512vnni
-mno-avx512bitalg -mno-avx512vpopcntdq -mno-avx512-4fmaps -mno-avx512bitalg -mno-avx512vpopcntdq
-mno-avx512-4vnniw -mno-avx512vp2intersect -mno-avx5124fmaps -mno-avx5124vnniw -mno-avx512vp2intersect
) )
endif() endif()
endif() endif()