both are under conditions that shouldn't happen for a default build - the first one is if one sets KFR_ARCH=avx512 and the other is if we're under -DSCORE_PCH=1 which is only useful when doing development on score ; building a distro package should use instead -DCMAKE_UNITY_BUILD=1 which will build faster and more efficiently.

For freebsd I think it should look like this:

cmake -S path/to/score  -Wno-dev \
        -DCMAKE_BUILD_TYPE=Release \
        -DCMAKE_UNITY_BUILD=1 \
        -DSCORE_DEPLOYMENT_BUILD=1 \
        -DCMAKE_SKIP_RPATH=ON \
        -DCMAKE_CXX_FLAGS="-fexperimental-library"

when I look at the compile_commands.json, the only places where I see specific SSE flags there are with the KFR multiarch support (it builds separate files for SSE2, SSE4, AVX, AVX2, AVX512 and then picks the right one at runtime depending on the features available on the user's CPU so I believe it should stay that way - it will work on old and more recent computers alike).

If you really really want to disable any SSE > 2 you can pass:

-DKFR_ARCH=sse2 -DKFR_ENABLE_MULTIARCH=OFF

but that will just block everyone to the lowest common denominator without any change to which CPUs actually support it.

If you have a generated compile_commands.json that has files other than these ones (kfr_dft_blabla, kfr_dsp_blabla) with SSE > 2 or AVX please share it to me as it would be a freebsd-specific issue:

$ cat compile_commands.json|grep -P 'm(sse|avx)'
  "command": "/sbin/clang++ -DBOOST_MATH_DISABLE_FLOAT128=1 -DBOOST_NO_RTTI=1 -DCMT_BASE_ARCH=1 -DCMT_MULTI=1 -DCMT_MULTI_ENABLED_AVX2=1 -DCMT_MULTI_ENABLED_AVX512=1 -DCMT_MULTI_ENABLED_AVX=1 -DCMT_MULTI_ENABLED_SSE2=1 -DCMT_MULTI_ENABLED_SSE41=1 -DKFR_ENABLED_ARCHS=\"\\\"sse2, sse41, avx, avx2, avx512\\\"\" -DQT_DISABLE_DEPRECATED_BEFORE=0x0609ff -DQT_NO_KEYWORDS -I/tmp/3rdparty/libossia/kfr_build/src/dsp -I/home/jcelerier/ossia/score/3rdparty/libossia/3rdparty/kfr/src/dsp -isystem /home/jcelerier/ossia/score/3rdparty/libossia/3rdparty/kfr/include -fexperimental-library -O3 -DNDEBUG -std=gnu++17 -fPIC -Wno-gnu-anonymous-struct -Wno-nested-anon-types -Wno-dtor-name -Wno-null-conversion -Wno-error=missing-exception-spec -fopenmp-simd -mcx16 -w -Wno-c++1z-extensions -Wno-psabi -Wno-unknown-warning-option -mno-sse3 -msse2 -o CMakeFiles/kfr_dsp_sse2.dir/Unity/unity_0_cxx.cxx.o -c /tmp/3rdparty/libossia/kfr_build/src/dsp/CMakeFiles/kfr_dsp_sse2.dir/Unity/unity_0_cxx.cxx",
  "command": "/sbin/clang++ -DBOOST_MATH_DISABLE_FLOAT128=1 -DBOOST_NO_RTTI=1 -DCMT_MULTI=1 -DCMT_MULTI_ENABLED_AVX2=1 -DCMT_MULTI_ENABLED_AVX512=1 -DCMT_MULTI_ENABLED_AVX=1 -DCMT_MULTI_ENABLED_SSE2=1 -DCMT_MULTI_ENABLED_SSE41=1 -DKFR_ENABLED_ARCHS=\"\\\"sse2, sse41, avx, avx2, avx512\\\"\" -DQT_DISABLE_DEPRECATED_BEFORE=0x0609ff -DQT_NO_KEYWORDS -I/tmp/3rdparty/libossia/kfr_build/src/dsp -I/home/jcelerier/ossia/score/3rdparty/libossia/3rdparty/kfr/src/dsp -isystem /home/jcelerier/ossia/score/3rdparty/libossia/3rdparty/kfr/include -fexperimental-library -O3 -DNDEBUG -std=gnu++17 -fPIC -Wno-gnu-anonymous-struct -Wno-nested-anon-types -Wno-dtor-name -Wno-null-conversion -Wno-error=missing-exception-spec -fopenmp-simd -mcx16 -w -Wno-c++1z-extensions -Wno-psabi -Wno-unknown-warning-option -mno-sse3 -msse4.1 -o CMakeFiles/kfr_dsp_sse41.dir/Unity/unity_0_cxx.cxx.o -c /tmp/3rdparty/libossia/kfr_build/src/dsp/CMakeFiles/kfr_dsp_sse41.dir/Unity/unity_0_cxx.cxx",
  "command": "/sbin/clang++ -DBOOST_MATH_DISABLE_FLOAT128=1 -DBOOST_NO_RTTI=1 -DCMT_MULTI=1 -DCMT_MULTI_ENABLED_AVX2=1 -DCMT_MULTI_ENABLED_AVX512=1 -DCMT_MULTI_ENABLED_AVX=1 -DCMT_MULTI_ENABLED_SSE2=1 -DCMT_MULTI_ENABLED_SSE41=1 -DKFR_ENABLED_ARCHS=\"\\\"sse2, sse41, avx, avx2, avx512\\\"\" -DQT_DISABLE_DEPRECATED_BEFORE=0x0609ff -DQT_NO_KEYWORDS -I/tmp/3rdparty/libossia/kfr_build/src/dsp -I/home/jcelerier/ossia/score/3rdparty/libossia/3rdparty/kfr/src/dsp -isystem /home/jcelerier/ossia/score/3rdparty/libossia/3rdparty/kfr/include -fexperimental-library -O3 -DNDEBUG -std=gnu++17 -fPIC -Wno-gnu-anonymous-struct -Wno-nested-anon-types -Wno-dtor-name -Wno-null-conversion -Wno-error=missing-exception-spec -fopenmp-simd -mcx16 -w -Wno-c++1z-extensions -Wno-psabi -Wno-unknown-warning-option -mno-sse3 -msse4.2 -mavx -o CMakeFiles/kfr_dsp_avx.dir/Unity/unity_0_cxx.cxx.o -c /tmp/3rdparty/libossia/kfr_build/src/dsp/CMakeFiles/kfr_dsp_avx.dir/Unity/unity_0_cxx.cxx",
  "command": "/sbin/clang++ -DBOOST_MATH_DISABLE_FLOAT128=1 -DBOOST_NO_RTTI=1 -DCMT_MULTI=1 -DCMT_MULTI_ENABLED_AVX2=1 -DCMT_MULTI_ENABLED_AVX512=1 -DCMT_MULTI_ENABLED_AVX=1 -DCMT_MULTI_ENABLED_SSE2=1 -DCMT_MULTI_ENABLED_SSE41=1 -DKFR_ENABLED_ARCHS=\"\\\"sse2, sse41, avx, avx2, avx512\\\"\" -DQT_DISABLE_DEPRECATED_BEFORE=0x0609ff -DQT_NO_KEYWORDS -I/tmp/3rdparty/libossia/kfr_build/src/dsp -I/home/jcelerier/ossia/score/3rdparty/libossia/3rdparty/kfr/src/dsp -isystem /home/jcelerier/ossia/score/3rdparty/libossia/3rdparty/kfr/include -fexperimental-library -O3 -DNDEBUG -std=gnu++17 -fPIC -Wno-gnu-anonymous-struct -Wno-nested-anon-types -Wno-dtor-name -Wno-null-conversion -Wno-error=missing-exception-spec -fopenmp-simd -mcx16 -w -Wno-c++1z-extensions -Wno-psabi -Wno-unknown-warning-option -mno-sse3 -msse4.2 -mavx2 -mfma -o CMakeFiles/kfr_dsp_avx2.dir/Unity/unity_0_cxx.cxx.o -c /tmp/3rdparty/libossia/kfr_build/src/dsp/CMakeFiles/kfr_dsp_avx2.dir/Unity/unity_0_cxx.cxx",
  "command": "/sbin/clang++ -DBOOST_MATH_DISABLE_FLOAT128=1 -DBOOST_NO_RTTI=1 -DCMT_MULTI=1 -DCMT_MULTI_ENABLED_AVX2=1 -DCMT_MULTI_ENABLED_AVX512=1 -DCMT_MULTI_ENABLED_AVX=1 -DCMT_MULTI_ENABLED_SSE2=1 -DCMT_MULTI_ENABLED_SSE41=1 -DKFR_ENABLED_ARCHS=\"\\\"sse2, sse41, avx, avx2, avx512\\\"\" -DQT_DISABLE_DEPRECATED_BEFORE=0x0609ff -DQT_NO_KEYWORDS -I/tmp/3rdparty/libossia/kfr_build/src/dsp -I/home/jcelerier/ossia/score/3rdparty/libossia/3rdparty/kfr/src/dsp -isystem /home/jcelerier/ossia/score/3rdparty/libossia/3rdparty/kfr/include -fexperimental-library -O3 -DNDEBUG -std=gnu++17 -fPIC -Wno-gnu-anonymous-struct -Wno-nested-anon-types -Wno-dtor-name -Wno-null-conversion -Wno-error=missing-exception-spec -fopenmp-simd -mcx16 -w -Wno-c++1z-extensions -Wno-psabi -Wno-unknown-warning-option -mno-sse3 -msse4.2 -mavx2 -mfma -mavx512f -mavx512cd -mavx512bw -mavx512dq -mavx512vl -o CMakeFiles/kfr_dsp_avx512.dir/Unity/unity_0_cxx.cxx.o -c /tmp/3rdparty/libossia/kfr_build/src/dsp/CMakeFiles/kfr_dsp_avx512.dir/Unity/unity_0_cxx.cxx",
  "command": "/sbin/clang++ -DBOOST_MATH_DISABLE_FLOAT128=1 -DBOOST_NO_RTTI=1 -DKFR_ENABLED_ARCHS=\"\\\"sse2, sse41, avx, avx2, avx512\\\"\" -DQT_DISABLE_DEPRECATED_BEFORE=0x0609ff -DQT_NO_KEYWORDS -I/tmp/3rdparty/libossia/kfr_build/src/io -I/home/jcelerier/ossia/score/3rdparty/libossia/3rdparty/kfr/src/io -isystem /home/jcelerier/ossia/score/3rdparty/libossia/3rdparty/kfr/include -fexperimental-library -O3 -DNDEBUG -std=gnu++17 -fPIC -Wno-gnu-anonymous-struct -Wno-nested-anon-types -Wno-dtor-name -Wno-null-conversion -Wno-error=missing-exception-spec -fopenmp-simd -mcx16 -w -Wno-c++1z-extensions -Wno-psabi -Wno-unknown-warning-option -mno-sse3 -msse2 -o CMakeFiles/kfr_io.dir/Unity/unity_0_cxx.cxx.o -c /tmp/3rdparty/libossia/kfr_build/src/io/CMakeFiles/kfr_io.dir/Unity/unity_0_cxx.cxx",
  "command": "/sbin/clang++ -DBOOST_MATH_DISABLE_FLOAT128=1 -DBOOST_NO_RTTI=1 -DCMT_BASE_ARCH=1 -DCMT_MULTI=1 -DCMT_MULTI_ENABLED_AVX2=1 -DCMT_MULTI_ENABLED_AVX512=1 -DCMT_MULTI_ENABLED_AVX=1 -DCMT_MULTI_ENABLED_SSE2=1 -DCMT_MULTI_ENABLED_SSE41=1 -DKFR_ENABLED_ARCHS=\"\\\"sse2, sse41, avx, avx2, avx512\\\"\" -DQT_DISABLE_DEPRECATED_BEFORE=0x0609ff -DQT_NO_KEYWORDS -I/tmp/3rdparty/libossia/kfr_build/src/dft -I/home/jcelerier/ossia/score/3rdparty/libossia/3rdparty/kfr/src/dft -isystem /home/jcelerier/ossia/score/3rdparty/libossia/3rdparty/kfr/include -fexperimental-library -O3 -DNDEBUG -std=gnu++17 -fPIC -Wno-gnu-anonymous-struct -Wno-nested-anon-types -Wno-dtor-name -Wno-null-conversion -Wno-error=missing-exception-spec -fopenmp-simd -mcx16 -w -Wno-c++1z-extensions -Wno-psabi -Wno-unknown-warning-option -mno-sse3 -msse2 -ffp-contract=fast -O3 -o CMakeFiles/kfr_dft_sse2.dir/Unity/unity_0_cxx.cxx.o -c /tmp/3rdparty/libossia/kfr_build/src/dft/CMakeFiles/kfr_dft_sse2.dir/Unity/unity_0_cxx.cxx",
  "command": "/sbin/clang++ -DBOOST_MATH_DISABLE_FLOAT128=1 -DBOOST_NO_RTTI=1 -DCMT_MULTI=1 -DCMT_MULTI_ENABLED_AVX2=1 -DCMT_MULTI_ENABLED_AVX512=1 -DCMT_MULTI_ENABLED_AVX=1 -DCMT_MULTI_ENABLED_SSE2=1 -DCMT_MULTI_ENABLED_SSE41=1 -DKFR_ENABLED_ARCHS=\"\\\"sse2, sse41, avx, avx2, avx512\\\"\" -DQT_DISABLE_DEPRECATED_BEFORE=0x0609ff -DQT_NO_KEYWORDS -I/tmp/3rdparty/libossia/kfr_build/src/dft -I/home/jcelerier/ossia/score/3rdparty/libossia/3rdparty/kfr/src/dft -isystem /home/jcelerier/ossia/score/3rdparty/libossia/3rdparty/kfr/include -fexperimental-library -O3 -DNDEBUG -std=gnu++17 -fPIC -Wno-gnu-anonymous-struct -Wno-nested-anon-types -Wno-dtor-name -Wno-null-conversion -Wno-error=missing-exception-spec -fopenmp-simd -mcx16 -w -Wno-c++1z-extensions -Wno-psabi -Wno-unknown-warning-option -mno-sse3 -msse4.1 -ffp-contract=fast -O3 -o CMakeFiles/kfr_dft_sse41.dir/Unity/unity_0_cxx.cxx.o -c /tmp/3rdparty/libossia/kfr_build/src/dft/CMakeFiles/kfr_dft_sse41.dir/Unity/unity_0_cxx.cxx",
  "command": "/sbin/clang++ -DBOOST_MATH_DISABLE_FLOAT128=1 -DBOOST_NO_RTTI=1 -DCMT_MULTI=1 -DCMT_MULTI_ENABLED_AVX2=1 -DCMT_MULTI_ENABLED_AVX512=1 -DCMT_MULTI_ENABLED_AVX=1 -DCMT_MULTI_ENABLED_SSE2=1 -DCMT_MULTI_ENABLED_SSE41=1 -DKFR_ENABLED_ARCHS=\"\\\"sse2, sse41, avx, avx2, avx512\\\"\" -DQT_DISABLE_DEPRECATED_BEFORE=0x0609ff -DQT_NO_KEYWORDS -I/tmp/3rdparty/libossia/kfr_build/src/dft -I/home/jcelerier/ossia/score/3rdparty/libossia/3rdparty/kfr/src/dft -isystem /home/jcelerier/ossia/score/3rdparty/libossia/3rdparty/kfr/include -fexperimental-library -O3 -DNDEBUG -std=gnu++17 -fPIC -Wno-gnu-anonymous-struct -Wno-nested-anon-types -Wno-dtor-name -Wno-null-conversion -Wno-error=missing-exception-spec -fopenmp-simd -mcx16 -w -Wno-c++1z-extensions -Wno-psabi -Wno-unknown-warning-option -mno-sse3 -msse4.2 -mavx -ffp-contract=fast -O3 -o CMakeFiles/kfr_dft_avx.dir/Unity/unity_0_cxx.cxx.o -c /tmp/3rdparty/libossia/kfr_build/src/dft/CMakeFiles/kfr_dft_avx.dir/Unity/unity_0_cxx.cxx",
  "command": "/sbin/clang++ -DBOOST_MATH_DISABLE_FLOAT128=1 -DBOOST_NO_RTTI=1 -DCMT_MULTI=1 -DCMT_MULTI_ENABLED_AVX2=1 -DCMT_MULTI_ENABLED_AVX512=1 -DCMT_MULTI_ENABLED_AVX=1 -DCMT_MULTI_ENABLED_SSE2=1 -DCMT_MULTI_ENABLED_SSE41=1 -DKFR_ENABLED_ARCHS=\"\\\"sse2, sse41, avx, avx2, avx512\\\"\" -DQT_DISABLE_DEPRECATED_BEFORE=0x0609ff -DQT_NO_KEYWORDS -I/tmp/3rdparty/libossia/kfr_build/src/dft -I/home/jcelerier/ossia/score/3rdparty/libossia/3rdparty/kfr/src/dft -isystem /home/jcelerier/ossia/score/3rdparty/libossia/3rdparty/kfr/include -fexperimental-library -O3 -DNDEBUG -std=gnu++17 -fPIC -Wno-gnu-anonymous-struct -Wno-nested-anon-types -Wno-dtor-name -Wno-null-conversion -Wno-error=missing-exception-spec -fopenmp-simd -mcx16 -w -Wno-c++1z-extensions -Wno-psabi -Wno-unknown-warning-option -mno-sse3 -msse4.2 -mavx2 -mfma -ffp-contract=fast -O3 -o CMakeFiles/kfr_dft_avx2.dir/Unity/unity_0_cxx.cxx.o -c /tmp/3rdparty/libossia/kfr_build/src/dft/CMakeFiles/kfr_dft_avx2.dir/Unity/unity_0_cxx.cxx",
  "command": "/sbin/clang++ -DBOOST_MATH_DISABLE_FLOAT128=1 -DBOOST_NO_RTTI=1 -DCMT_MULTI=1 -DCMT_MULTI_ENABLED_AVX2=1 -DCMT_MULTI_ENABLED_AVX512=1 -DCMT_MULTI_ENABLED_AVX=1 -DCMT_MULTI_ENABLED_SSE2=1 -DCMT_MULTI_ENABLED_SSE41=1 -DKFR_ENABLED_ARCHS=\"\\\"sse2, sse41, avx, avx2, avx512\\\"\" -DQT_DISABLE_DEPRECATED_BEFORE=0x0609ff -DQT_NO_KEYWORDS -I/tmp/3rdparty/libossia/kfr_build/src/dft -I/home/jcelerier/ossia/score/3rdparty/libossia/3rdparty/kfr/src/dft -isystem /home/jcelerier/ossia/score/3rdparty/libossia/3rdparty/kfr/include -fexperimental-library -O3 -DNDEBUG -std=gnu++17 -fPIC -Wno-gnu-anonymous-struct -Wno-nested-anon-types -Wno-dtor-name -Wno-null-conversion -Wno-error=missing-exception-spec -fopenmp-simd -mcx16 -w -Wno-c++1z-extensions -Wno-psabi -Wno-unknown-warning-option -mno-sse3 -msse4.2 -mavx2 -mfma -mavx512f -mavx512cd -mavx512bw -mavx512dq -mavx512vl -ffp-contract=fast -O3 -o CMakeFiles/kfr_dft_avx512.dir/Unity/unity_0_cxx.cxx.o -c /tmp/3rdparty/libossia/kfr_build/src/dft/CMakeFiles/kfr_dft_avx512.dir/Unity/unity_0_cxx.cxx",

Uh oh!

Plase add cmake options to limit the SSE level #1819

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