initial buildroot for linux 5.15

package/lapack/Config.in

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+config BR2_PACKAGE_LAPACK_ARCH_SUPPORTS
+	bool
+	default y
+	# _fpu_control is used on PowerPC, but not available with
+	# uClibc or musl
+	depends on !BR2_powerpc || BR2_TOOLCHAIN_USES_GLIBC
+
+comment "lapack/blas needs a glibc toolchain"
+	depends on BR2_powerpc
+	depends on !BR2_TOOLCHAIN_USES_GLIBC
+
+comment "lapack/blas needs a toolchain w/ fortran"
+	depends on BR2_PACKAGE_LAPACK_ARCH_SUPPORTS
+	depends on !BR2_TOOLCHAIN_HAS_FORTRAN
+
+config BR2_PACKAGE_LAPACK
+	bool "lapack/blas"
+	depends on BR2_PACKAGE_LAPACK_ARCH_SUPPORTS
+	depends on BR2_TOOLCHAIN_HAS_FORTRAN
+	help
+	  LAPACK and BLAS FORTRAN implementation. This package
+	  installs two libraries: libblas and liblapack.
+
+	  http://www.netlib.org/lapack/
+
+config BR2_PACKAGE_LAPACK_COMPLEX
+	bool "Complex/Complex16 support"
+	default y
+	depends on BR2_PACKAGE_LAPACK
+	help
+	  Builds support for COMPLEX and COMPLEX16 data types.

package/lapack/lapack.hash

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+# Locally computed:
+sha256 106087f1bb5f46afdfba7f569d0cbe23dacb9a07cd24733765a0e89dbe1ad573  lapack-3.9.0.tar.gz
+sha256 d56bd4441b999b80c88df04faf0d8b3d7d3b2bd781cf91242c4188e8a6d0f8be  LICENSE

package/lapack/lapack.mk

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+################################################################################
+#
+# lapack
+#
+################################################################################
+
+LAPACK_VERSION = 3.9.0
+LAPACK_LICENSE = BSD-3-Clause
+LAPACK_LICENSE_FILES = LICENSE
+LAPACK_SITE = $(call github,Reference-LAPACK,lapack,v$(LAPACK_VERSION))
+LAPACK_INSTALL_STAGING = YES
+LAPACK_SUPPORTS_IN_SOURCE_BUILD = NO
+LAPACK_CONF_OPTS = -DLAPACKE=ON -DCBLAS=ON
+
+ifeq ($(BR2_PACKAGE_LAPACK_COMPLEX),y)
+LAPACK_CONF_OPTS += -DBUILD_COMPLEX=ON -DBUILD_COMPLEX16=ON
+else
+LAPACK_CONF_OPTS += -DBUILD_COMPLEX=OFF -DBUILD_COMPLEX16=OFF
+endif
+
+$(eval $(cmake-package))