Build failure in OpenBLAS #44517
Description
Default build of OpenBLAS on macOS ARM (Apple Silicon) within Julia:
make prefix=/tmp/toto VERBOSE=1 USE_BINARYBUILDER=0 PYTHON=python3 MACOSX_VERSION_MIN=12 USE_SYSTEM_LLVM=1 USE_SYSTEM_LIBUNWIND=1
gives the following build error:
gfortran -mmacosx-version-min=12 -mcpu=apple-a12 -Wa,-q -O2 -fPIC -fdefault-integer-8 -O2 -fdefault-integer-8 -Wall -frecursive -fno-optimize-sibling-calls -fPIC -march=armv8-a -c -o spotrf2.o spotrf2.f
f951: Error: unknown value 'apple-a12' for '-mcpu'
f951: note: valid arguments are: cortex-a34 cortex-a35 cortex-a53 cortex-a57 cortex-a72 cortex-a73 thunderx thunderxt88p1 thunderxt88 octeontx octeontx81 octeontx83 thunderxt81 thunderxt83 emag xgene1 falkor qdf24xx exynos-m1 phecda thunderx2t99p1 vulcan thunderx2t99 cortex-a55 cortex-a75 cortex-a76 cortex-a76ae cortex-a77 cortex-a78 cortex-a78ae cortex-a78c cortex-a65 cortex-a65ae cortex-x1 ares neoverse-n1 neoverse-e1 octeontx2 octeontx2t98 octeontx2t96 octeontx2t93 octeontx2f95 octeontx2f95n octeontx2f95mm a64fx tsv110 thunderx3t110 zeus neoverse-v1 saphira neoverse-n2 cortex-a57.cortex-a53 cortex-a72.cortex-a53 cortex-a73.cortex-a35 cortex-a73.cortex-a53 cortex-a75.cortex-a55 cortex-a76.cortex-a55 cortex-r82 generic
make[4]: *** [spotrf2.o] Error 1
make[3]: *** [lapacklib] Error 2
make[2]: *** [netlib] Error 2
*** Clean the OpenBLAS build with 'make -C deps clean-openblas'. Rebuild with 'make OPENBLAS_USE_THREAD=0' if OpenBLAS had trouble linking libpthread.so, and with 'make OPENBLAS_TARGET_ARCH=NEHALEM' if there were errors building SandyBridge support. Both these options can also be used simultaneously. ***
I tried passing OPENBLAS_TARGET_ARCH=VORTEX to make as an additional parameter, which is passed down to openblas as make TARGET=VORTEX. But that does not appear to solve the issue.