BUG: Build failure with -mcpu=power9: error: '__builtin_vsx_vextract_fp_from_shorth' requires the '-mcpu=power9' and '-mvsx' options #29622

* Creating isolated environment: venv+pip...
* Installing packages in isolated environment:
  - Cython>=3.0.6
  - meson-python>=0.18.0
* Getting build dependencies for wheel...
* Installing packages in isolated environment:
  - patchelf >= 0.11.0
* Building wheel...
+ /tmp/build-env-utyu_4s1/bin/python /home/mgorny/numpy/vendored-meson/meson/meson.py setup /home/mgorny/numpy /home/mgorny/numpy/.mesonpy-xh32ria7 -Dbuildtype=release -Db_ndebug=if-release -Db_vscrt=md --native-file=/home/mgorny/numpy/.mesonpy-xh32ria7/meson-python-native-file.ini
The Meson build system
Version: 1.8.3
Source dir: /home/mgorny/numpy
Build dir: /home/mgorny/numpy/.mesonpy-xh32ria7
Build type: native build
Project name: NumPy
Project version: 2.4.0.dev0+git20250824.388b918
C compiler for the host machine: ccache cc (gcc 14.3.0 "cc (Gentoo Hardened 14.3.0 p8) 14.3.0")
C linker for the host machine: cc ld.bfd 2.44
C++ compiler for the host machine: ccache c++ (gcc 14.3.0 "c++ (Gentoo Hardened 14.3.0 p8) 14.3.0")
C++ linker for the host machine: c++ ld.bfd 2.44
Cython compiler for the host machine: cython (cython 3.1.3)
Host machine cpu family: ppc64
Host machine cpu: ppc64le
Program python found: YES (/tmp/build-env-utyu_4s1/bin/python)
Found pkg-config: YES (/usr/bin/pkg-config) 2.5.1
Run-time dependency python found: YES 3.13
Has header "Python.h" with dependency python-3.13: YES 
Compiler for C supports arguments -fno-strict-aliasing: YES 
Message: Appending option "detect" to "cpu-baseline" due to detecting global architecture c_arg "-mcpu=power9"
Test features "VSX VSX2 VSX3 VSX4" : Parial support, missing(VSX4) 
Message: During parsing cpu-dispatch: The following CPU features were ignored due to platform incompatibility or lack of support:
"XOP FMA4"
Test features "VSX VSX2 VSX3" : Supported 
Test features "VSX4" : Supported 
Configuring npy_cpu_dispatch_config.h using configuration
Message: 
CPU Optimization Options
  baseline:
    Requested : min+detect
    Enabled   : VSX VSX2 VSX3
  dispatch:
    Requested : max -xop -fma4
    Enabled   : VSX4

Library m found: YES
Run-time dependency scipy-openblas found: NO (tried pkgconfig)
Found CMake: /usr/bin/cmake (3.31.7)
Run-time dependency openblas found: NO (tried pkgconfig, pkgconfig, pkgconfig, system and cmake)
Run-time dependency flexiblas found: NO (tried pkgconfig and cmake)
Run-time dependency blis found: NO (tried pkgconfig and cmake)
Run-time dependency blas found: NO (tried pkgconfig and system)
Run-time dependency openblas found: NO (tried pkgconfig, pkgconfig, pkgconfig, system and cmake)
Run-time dependency flexiblas found: NO (tried pkgconfig and cmake)
Run-time dependency lapack found: NO (tried pkgconfig and system)
Checking if "Check atomic builtins without -latomic" links: YES 
Program _build_utils/process_src_template.py found: YES (/tmp/build-env-utyu_4s1/bin/python /home/mgorny/numpy/numpy/_build_utils/process_src_template.py)
Program _build_utils/tempita.py found: YES (/tmp/build-env-utyu_4s1/bin/python /home/mgorny/numpy/numpy/_build_utils/tempita.py)
Configuring __config__.py using configuration
../numpy/meson.build:445: WARNING: The variable(s) 'BLAS_INCLUDEDIR', 'BLAS_LIBDIR', 'BLAS_OPENBLAS_CONFIG', 'BLAS_PCFILEDIR', 'BLAS_TYPE_NAME', 'BLAS_VERSION', 'LAPACK_INCLUDEDIR', 'LAPACK_LIBDIR', 'LAPACK_OPENBLAS_CONFIG', 'LAPACK_PCFILEDIR', 'LAPACK_TYPE_NAME', 'LAPACK_VERSION' in the input file 'numpy/__config__.py.in' are not present in the given configuration data.
Checking for size of "short" : 2 
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Checking for size of "long double" : 16 
Checking for size of "size_t" : 8 
Checking for size of "size_t" : 8 (cached)
Checking for size of "wchar_t" : 4 
Checking for size of "off_t" : 8 
Checking for size of "Py_intptr_t" with dependency python-3.13: 8 
Checking for size of "PY_LONG_LONG" with dependency python-3.13: 8 
Has header "complex.h" : YES 
Checking for type "complex float" : YES 
Checking for size of "complex float" : 8 
Checking for type "complex double" : YES 
Checking for size of "complex double" : 16 
Checking for type "complex long double" : YES 
Checking for size of "complex long double" : 32 
Checking for function "sin" with dependency -lm: YES 
Checking for function "cos" with dependency -lm: YES 
Checking for function "tan" with dependency -lm: YES 
Checking for function "sinh" with dependency -lm: YES 
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Checking for function "tanh" with dependency -lm: YES 
Checking for function "fabs" with dependency -lm: YES 
Checking for function "floor" with dependency -lm: YES 
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Checking for function "sqrt" with dependency -lm: YES 
Checking for function "log10" with dependency -lm: YES 
Checking for function "log" with dependency -lm: YES 
Checking for function "exp" with dependency -lm: YES 
Checking for function "asin" with dependency -lm: YES 
Checking for function "acos" with dependency -lm: YES 
Checking for function "atan" with dependency -lm: YES 
Checking for function "fmod" with dependency -lm: YES 
Checking for function "modf" with dependency -lm: YES 
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Checking for function "log1p" with dependency -lm: YES 
Checking for function "acosh" with dependency -lm: YES 
Checking for function "asinh" with dependency -lm: YES 
Checking for function "atanh" with dependency -lm: YES 
Checking for function "rint" with dependency -lm: YES 
Checking for function "trunc" with dependency -lm: YES 
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Checking for function "atan2" with dependency -lm: YES 
Checking for function "csin" with dependency -lm: YES 
Checking for function "csinh" with dependency -lm: YES 
Checking for function "ccos" with dependency -lm: YES 
Checking for function "ccosh" with dependency -lm: YES 
Checking for function "ctan" with dependency -lm: YES 
Checking for function "ctanh" with dependency -lm: YES 
Checking for function "creal" with dependency -lm: YES 
Checking for function "cimag" with dependency -lm: YES 
Checking for function "conj" with dependency -lm: YES 
Checking for function "strtoll" : YES 
Checking for function "strtoull" : YES 
Checking for function "cabs" with dependency -lm: YES 
Checking for function "cabsf" with dependency -lm: YES 
Checking for function "cabsl" with dependency -lm: YES 
Checking for function "cacos" with dependency -lm: YES 
Checking for function "cacosf" with dependency -lm: YES 
Checking for function "cacosl" with dependency -lm: YES 
Checking for function "cacosh" with dependency -lm: YES 
Checking for function "cacoshf" with dependency -lm: YES 
Checking for function "cacoshl" with dependency -lm: YES 
Checking for function "carg" with dependency -lm: YES 
Checking for function "cargf" with dependency -lm: YES 
Checking for function "cargl" with dependency -lm: YES 
Checking for function "casin" with dependency -lm: YES 
Checking for function "casinf" with dependency -lm: YES 
Checking for function "casinl" with dependency -lm: YES 
Checking for function "casinh" with dependency -lm: YES 
Checking for function "casinhf" with dependency -lm: YES 
Checking for function "casinhl" with dependency -lm: YES 
Checking for function "catan" with dependency -lm: YES 
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Checking for function "catanl" with dependency -lm: YES 
Checking for function "catanh" with dependency -lm: YES 
Checking for function "catanhf" with dependency -lm: YES 
Checking for function "catanhl" with dependency -lm: YES 
Checking for function "cexp" with dependency -lm: YES 
Checking for function "cexpf" with dependency -lm: YES 
Checking for function "cexpl" with dependency -lm: YES 
Checking for function "clog" with dependency -lm: YES 
Checking for function "clogf" with dependency -lm: YES 
Checking for function "clogl" with dependency -lm: YES 
Checking for function "cpow" with dependency -lm: YES 
Checking for function "cpowf" with dependency -lm: YES 
Checking for function "cpowl" with dependency -lm: YES 
Checking for function "csqrt" with dependency -lm: YES 
Checking for function "csqrtf" with dependency -lm: YES 
Checking for function "csqrtl" with dependency -lm: YES 
Checking for function "csin" with dependency -lm: YES (cached)
Checking for function "csinf" with dependency -lm: YES 
Checking for function "csinl" with dependency -lm: YES 
Checking for function "csinh" with dependency -lm: YES (cached)
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Checking for function "ccos" with dependency -lm: YES (cached)
Checking for function "ccosf" with dependency -lm: YES 
Checking for function "ccosl" with dependency -lm: YES 
Checking for function "ccosh" with dependency -lm: YES (cached)
Checking for function "ccoshf" with dependency -lm: YES 
Checking for function "ccoshl" with dependency -lm: YES 
Checking for function "ctan" with dependency -lm: YES (cached)
Checking for function "ctanf" with dependency -lm: YES 
Checking for function "ctanl" with dependency -lm: YES 
Checking for function "ctanh" with dependency -lm: YES (cached)
Checking for function "ctanhf" with dependency -lm: YES 
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Checking for function "isfinite" with dependency -lm: YES 
Header "Python.h" has symbol "isfinite" with dependency python-3.13: YES 
Checking for function "isinf" with dependency -lm: YES 
Header "Python.h" has symbol "isinf" with dependency python-3.13: YES 
Checking for function "isnan" with dependency -lm: YES 
Header "Python.h" has symbol "isnan" with dependency python-3.13: YES 
Checking for function "signbit" with dependency -lm: YES 
Header "Python.h" has symbol "signbit" with dependency python-3.13: YES 
Checking if "thread_local" compiles: NO 
Checking if "_Thread_local" compiles: YES 
Checking if "__thread" compiles: YES 
Checking if "__declspec(thread)" compiles: NO 
Checking for function "fallocate" : YES 
Header "Python.h" has symbol "HAVE_FTELLO" with dependency python-3.13: YES 
Header "Python.h" has symbol "HAVE_FSEEKO" with dependency python-3.13: YES 
Checking for function "backtrace" : YES 
Checking for function "madvise" : YES 
Has header "features.h" : YES 
Has header "xlocale.h" : NO 
Has header "dlfcn.h" : YES 
Has header "execinfo.h" : YES 
Has header "libunwind.h" : NO 
Has header "sys/mman.h" : YES 
Checking for function "strtold_l" : YES 
Checking if "__attribute__((optimize("unroll-loops")))" compiles: YES 
Checking if "__attribute__((optimize("O3")))" compiles: YES 
Checking if "__attribute__((nonnull(1)))" compiles: YES 
Compiler for C supports arguments -O3: YES 
Message: Long double format: IEEE_QUAD_LE
Has header "endian.h" : YES 
Has header "sys/endian.h" : NO 
Compiler for C supports function attribute visibility:hidden: YES 
Configuring config.h using configuration
Configuring _numpyconfig.h using configuration
Configuring npymath.ini using configuration
Configuring mlib.ini using configuration
Configuring numpy.pc using configuration
Generating multi-targets for "_umath_tests.dispatch.h" 
  Enabled targets: baseline
Generating multi-targets for "argfunc.dispatch.h" 
  Enabled targets: baseline
Generating multi-targets for "x86_simd_argsort.dispatch.h" 
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Generating multi-targets for "x86_simd_qsort.dispatch.h" 
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Generating multi-targets for "x86_simd_qsort_16bit.dispatch.h" 
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Generating multi-targets for "highway_qsort.dispatch.h" 
  Enabled targets: VSX2
Generating multi-targets for "highway_qsort_16bit.dispatch.h" 
  Enabled targets: VSX2
Generating multi-targets for "loops_arithm_fp.dispatch.h" 
  Enabled targets: baseline
Generating multi-targets for "loops_arithmetic.dispatch.h" 
  Enabled targets: VSX4, baseline
Generating multi-targets for "loops_comparison.dispatch.h" 
  Enabled targets: baseline
Generating multi-targets for "loops_exponent_log.dispatch.h" 
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Generating multi-targets for "loops_hyperbolic.dispatch.h" 
  Enabled targets: VSX4, baseline
Generating multi-targets for "loops_logical.dispatch.h" 
  Enabled targets: baseline
Generating multi-targets for "loops_minmax.dispatch.h" 
  Enabled targets: baseline
Generating multi-targets for "loops_modulo.dispatch.h" 
  Enabled targets: VSX4, baseline
Generating multi-targets for "loops_trigonometric.dispatch.h" 
  Enabled targets: VSX4, baseline
Generating multi-targets for "loops_umath_fp.dispatch.h" 
  Enabled targets: baseline
Generating multi-targets for "loops_unary.dispatch.h" 
  Enabled targets: baseline
Generating multi-targets for "loops_unary_fp.dispatch.h" 
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Generating multi-targets for "loops_unary_fp_le.dispatch.h" 
  Enabled targets: baseline
Generating multi-targets for "loops_unary_complex.dispatch.h" 
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Generating multi-targets for "loops_autovec.dispatch.h" 
  Enabled targets: baseline
Generating multi-targets for "loops_half.dispatch.h" 
  Enabled targets: baseline
Generating multi-targets for "_simd.dispatch.h" 
  Enabled targets: VSX4, baseline
Build targets in project: 70

NumPy 2.4.0.dev0+git20250824.388b918

  User defined options
    Native files: /home/mgorny/numpy/.mesonpy-xh32ria7/meson-python-native-file.ini
    b_ndebug    : if-release
    b_vscrt     : md
    buildtype   : release

Found ninja-1.12.1 at /usr/bin/ninja
+ /usr/bin/ninja
[137/363] Compiling C++ object numpy/_core/libhighway_qsort_16bit.dispatch.h_VSX2.a.p/src_npysort_highway_qsort_16bit.dispatch.cpp.o
FAILED: numpy/_core/libhighway_qsort_16bit.dispatch.h_VSX2.a.p/src_npysort_highway_qsort_16bit.dispatch.cpp.o 
ccache c++ -Inumpy/_core/libhighway_qsort_16bit.dispatch.h_VSX2.a.p -Inumpy/_core -I../numpy/_core -Inumpy/_core/include -I../numpy/_core/include -I../numpy/_core/src/common -I../numpy/_core/src/multiarray -I../numpy/_core/src/npymath -I../numpy/_core/src/umath -I../numpy/_core/src/highway -I/usr/include/python3.13 -I/home/mgorny/numpy/.mesonpy-xh32ria7/meson_cpu -fdiagnostics-color=always -DNDEBUG -Wall -Winvalid-pch -std=c++17 -O3 -mcpu=power9 -DNPY_HAVE_VSX -DNPY_HAVE_VSX_ASM -DNPY_HAVE_VSX3 -DNPY_HAVE_VSX3_HALF_DOUBLE -fPIC -DNPY_INTERNAL_BUILD -DHAVE_NPY_CONFIG_H -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE=1 -D_LARGEFILE64_SOURCE=1 -fno-exceptions -fno-rtti -O3 -DNPY_HAVE_VSX2 -mcpu=power8 -DNPY_MTARGETS_CURRENT=VSX2 -MD -MQ numpy/_core/libhighway_qsort_16bit.dispatch.h_VSX2.a.p/src_npysort_highway_qsort_16bit.dispatch.cpp.o -MF numpy/_core/libhighway_qsort_16bit.dispatch.h_VSX2.a.p/src_npysort_highway_qsort_16bit.dispatch.cpp.o.d -o numpy/_core/libhighway_qsort_16bit.dispatch.h_VSX2.a.p/src_npysort_highway_qsort_16bit.dispatch.cpp.o -c ../numpy/_core/src/npysort/highway_qsort_16bit.dispatch.cpp
In file included from ../numpy/_core/src/common/common.hpp:10,
                 from ../numpy/_core/src/npysort/highway_qsort.hpp:4,
                 from ../numpy/_core/src/npysort/highway_qsort_16bit.dispatch.cpp:5:
../numpy/_core/src/common/half.hpp: In member function 'np::Half::operator float() const':
../numpy/_core/src/common/half.hpp:76:54: error: '__builtin_vsx_vextract_fp_from_shorth' requires the '-mcpu=power9' and '-mvsx' options
   76 |         return vec_extract(vec_extract_fp_from_shorth(vec_splats(bits_)), 0);
      |                                                      ^
../numpy/_core/src/common/half.hpp:76:54: note: overloaded builtin '__builtin_vec_vextract_fp_from_shorth' is implemented by builtin '__builtin_vsx_vextract_fp_from_shorth'
[139/363] Compiling C++ object numpy/_core/libhighway_qsort.dispatch.h_VSX2.a.p/src_npysort_highway_qsort.dispatch.cpp.o
FAILED: numpy/_core/libhighway_qsort.dispatch.h_VSX2.a.p/src_npysort_highway_qsort.dispatch.cpp.o 
ccache c++ -Inumpy/_core/libhighway_qsort.dispatch.h_VSX2.a.p -Inumpy/_core -I../numpy/_core -Inumpy/_core/include -I../numpy/_core/include -I../numpy/_core/src/common -I../numpy/_core/src/multiarray -I../numpy/_core/src/npymath -I../numpy/_core/src/umath -I../numpy/_core/src/highway -I/usr/include/python3.13 -I/home/mgorny/numpy/.mesonpy-xh32ria7/meson_cpu -fdiagnostics-color=always -DNDEBUG -Wall -Winvalid-pch -std=c++17 -O3 -mcpu=power9 -DNPY_HAVE_VSX -DNPY_HAVE_VSX_ASM -DNPY_HAVE_VSX3 -DNPY_HAVE_VSX3_HALF_DOUBLE -fPIC -DNPY_INTERNAL_BUILD -DHAVE_NPY_CONFIG_H -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE=1 -D_LARGEFILE64_SOURCE=1 -fno-exceptions -fno-rtti -O3 -DNPY_HAVE_VSX2 -mcpu=power8 -DNPY_MTARGETS_CURRENT=VSX2 -MD -MQ numpy/_core/libhighway_qsort.dispatch.h_VSX2.a.p/src_npysort_highway_qsort.dispatch.cpp.o -MF numpy/_core/libhighway_qsort.dispatch.h_VSX2.a.p/src_npysort_highway_qsort.dispatch.cpp.o.d -o numpy/_core/libhighway_qsort.dispatch.h_VSX2.a.p/src_npysort_highway_qsort.dispatch.cpp.o -c ../numpy/_core/src/npysort/highway_qsort.dispatch.cpp
In file included from ../numpy/_core/src/common/common.hpp:10,
                 from ../numpy/_core/src/npysort/highway_qsort.hpp:4,
                 from ../numpy/_core/src/npysort/highway_qsort.dispatch.cpp:5:
../numpy/_core/src/common/half.hpp: In member function 'np::Half::operator float() const':
../numpy/_core/src/common/half.hpp:76:54: error: '__builtin_vsx_vextract_fp_from_shorth' requires the '-mcpu=power9' and '-mvsx' options
   76 |         return vec_extract(vec_extract_fp_from_shorth(vec_splats(bits_)), 0);
      |                                                      ^
../numpy/_core/src/common/half.hpp:76:54: note: overloaded builtin '__builtin_vec_vextract_fp_from_shorth' is implemented by builtin '__builtin_vsx_vextract_fp_from_shorth'
[154/363] Compiling C object numpy/_core/libloops_autovec.dispatch.h_baseline.a.p/meson-generated_loops_autovec.dispatch.c.o
ninja: build stopped: subcommand failed.

ERROR Backend subprocess exited when trying to invoke build_wheel