kumquat-buildroot/package/openblas/Config.in

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config BR2_PACKAGE_OPENBLAS_DEFAULT_TARGET
string
default "P2" if BR2_x86_pentium2
default "KATMAI" if BR2_x86_pentium3
default "NORTHWOOD" if BR2_x86_pentium4
default "PRESCOTT" if BR2_x86_prescott || BR2_x86_nocona
default "BANIAS" if BR2_x86_pentium_m
default "CORE2" if BR2_x86_core2
default "NEHALEM" if BR2_x86_corei7 || BR2_x86_silvermont || BR2_x86_westmere
default "SANDYBRIDGE" if BR2_x86_corei7_avx
default "HASWELL" if BR2_x86_core_avx2
default "ATOM" if BR2_x86_atom
default "ATHLON" if BR2_x86_athlon || BR2_x86_athlon_4
default "OPTERON" if BR2_x86_opteron
default "OPTERON_SSE3" if BR2_x86_opteron_sse3
default "BARCELONA" if BR2_x86_barcelona
default "JAGUAR" if BR2_x86_jaguar
default "STEAMROLLER" if BR2_x86_steamroller
default "VIAC3" if BR2_x86_c3 || BR2_x86_c32
default "POWER4" if BR2_powerpc_power4
default "POWER5" if BR2_powerpc_power5
default "POWER6" if BR2_powerpc_power6
default "POWER7" if BR2_powerpc_power7
default "POWER8" if BR2_powerpc_power8
default "PPCG4" if BR2_powerpc_7400 || BR2_powerpc_7450
default "PPC970" if BR2_powerpc_970
default "PPC440" if BR2_powerpc_440
default "PPC440FP2" if BR2_powerpc_440fp
# P5600 is built with MSA support which is only available in Codescape toolchains
default "P5600" if BR2_mips_p5600 && BR2_TOOLCHAIN_EXTERNAL_CODESCAPE_MTI_MIPS
default "SICORTEX" if BR2_MIPS_CPU_MIPS64
# I6400 is built with MSA support which is only available in Codescape toolchains
default "I6400" if BR2_mips_i6400 && BR2_TOOLCHAIN_EXTERNAL_CODESCAPE_IMG_MIPS
# OpenBLAS assumes SPARC=Sparc v9
default "SPARC" if BR2_sparc_v9
openblas: fix build issues on ARM This commit fixes several build issues of OpenBLAS on ARM: - The first one occured on ARMv5 platforms, when the ARMV5 OpenBLAS architecture is used. In this case, OpenBLAS build system forces -march=armv5, which may not be correct for certain toolchains. As an example, the Sourcery CodeBench toolchain has an ARMv4 and an ARMv5 sysroot. The ARMv5 sysroot is actually an armv5te sysroot, so when OpenBLAS forces -march=armv5, gcc thinks it should use the ARMv4 sysroot, causing build failures. To address this, a patch to completely remove the -march ARM CFLAGS is added to OpenBLAS. Fixes: http://autobuild.buildroot.net/results/991497b12b70f948169e5ad99eebd0fe7f6209a2/ - The second one occured on ARMv7 platforms, when the ARMV7 OpenBLAS architecture is used. The OpenBLAS code expects an EABIhf build, so a dependency is added for EABIhf for both ARMv6 and ARMv7. Fixes: http://autobuild.buildroot.net/results/0ba0bee48a83367fcefab827e8eaa72f0c8fe90b/ - Once the previous ARMv7 problem has been fixed, it turns out that the ARMv7 specific code in OpenBLAS contains VFPv3 specific code. Therefore, the user *must* have choosen either VFPv3 or VFPv4, or the code will not build. VFPv3-D16/VFPv4-D16 are not sufficient, as more than 16 registers are used by the OpenBLAS code. To address this, the ARMV7 platform of OpenBLAS is restricted to the proper VFPv3/VFPv4 selection, and the ARMV6 platform is restricted to the proper VFPv2 selection. This problem was not visible in the autobuilders, as it was hidden by the previous one. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2016-08-07 23:32:34 +02:00
# Cortex-A15 always have a VFPv4
default "CORTEXA15" if (BR2_cortex_a15 && BR2_ARM_EABIHF)
# Cortex-A9 have an optional VFPv3, so we need to make sure it
# is available
default "CORTEXA9" if (BR2_cortex_a9 && BR2_ARM_EABIHF && \
BR2_ARM_CPU_HAS_VFPV3)
default "ARMV5" if BR2_ARM_CPU_ARMV5
openblas: fix build issues on ARM This commit fixes several build issues of OpenBLAS on ARM: - The first one occured on ARMv5 platforms, when the ARMV5 OpenBLAS architecture is used. In this case, OpenBLAS build system forces -march=armv5, which may not be correct for certain toolchains. As an example, the Sourcery CodeBench toolchain has an ARMv4 and an ARMv5 sysroot. The ARMv5 sysroot is actually an armv5te sysroot, so when OpenBLAS forces -march=armv5, gcc thinks it should use the ARMv4 sysroot, causing build failures. To address this, a patch to completely remove the -march ARM CFLAGS is added to OpenBLAS. Fixes: http://autobuild.buildroot.net/results/991497b12b70f948169e5ad99eebd0fe7f6209a2/ - The second one occured on ARMv7 platforms, when the ARMV7 OpenBLAS architecture is used. The OpenBLAS code expects an EABIhf build, so a dependency is added for EABIhf for both ARMv6 and ARMv7. Fixes: http://autobuild.buildroot.net/results/0ba0bee48a83367fcefab827e8eaa72f0c8fe90b/ - Once the previous ARMv7 problem has been fixed, it turns out that the ARMv7 specific code in OpenBLAS contains VFPv3 specific code. Therefore, the user *must* have choosen either VFPv3 or VFPv4, or the code will not build. VFPv3-D16/VFPv4-D16 are not sufficient, as more than 16 registers are used by the OpenBLAS code. To address this, the ARMV7 platform of OpenBLAS is restricted to the proper VFPv3/VFPv4 selection, and the ARMV6 platform is restricted to the proper VFPv2 selection. This problem was not visible in the autobuilders, as it was hidden by the previous one. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2016-08-07 23:32:34 +02:00
# On ARMv6, OpenBLAS assumes that a VFP is available, and
# EABIhf is used
default "ARMV6" if (BR2_ARM_CPU_ARMV6 && BR2_ARM_EABIHF && \
BR2_ARM_CPU_HAS_VFPV2)
# On ARMv7, OpenBLAS assumes that a full VFPv3+ is available
# (and not the more limited D16 variant), and that EABIhf is
# used.
default "ARMV7" if (BR2_ARM_CPU_ARMV7A && BR2_ARM_EABIHF && \
BR2_ARM_CPU_HAS_VFPV3)
default "ARMV8" if BR2_aarch64 || BR2_aarch64_be
help
OpenBLAS target CPU. See TargetList.txt in the source tree for
the possible target strings. A possible value is set
automatically based on your Target Architecture Variant.
config BR2_PACKAGE_OPENBLAS_ARCH_SUPPORTS
bool
default y if BR2_PACKAGE_OPENBLAS_DEFAULT_TARGET != ""
config BR2_PACKAGE_OPENBLAS
bool "openblas"
depends on BR2_PACKAGE_OPENBLAS_ARCH_SUPPORTS
help
An optimized BLAS library based on GotoBLAS2 1.13 BSD version.
https://www.openblas.net/
if BR2_PACKAGE_OPENBLAS
config BR2_PACKAGE_OPENBLAS_TARGET
string "OpenBLAS target CPU"
default BR2_PACKAGE_OPENBLAS_DEFAULT_TARGET
endif