initial buildroot for linux 5.15

package/libp11/Config.in

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+config BR2_PACKAGE_LIBP11
+	bool "libp11"
+	depends on !BR2_STATIC_LIBS # dlopen
+	select BR2_PACKAGE_OPENSSL
+	help
+	  OpenSSL engine for PKCS#11 modules. Part of the OpenSC
+	  project.
+
+	  https://github.com/OpenSC/OpenSC/wiki
+
+comment "libp11 needs a toolchain w/ dynamic library"
+	depends on BR2_STATIC_LIBS

package/libp11/Config.in.host

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+config BR2_PACKAGE_HOST_LIBP11
+	bool "host libp11"
+	help
+	  OpenSSL engine for PKCS#11 modules. Part of the OpenSC
+	  project.
+
+	  https://github.com/OpenSC/OpenSC/wiki

package/libp11/libp11.hash

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+# Locally computed:
+sha256  57d47a12a76fd92664ae30032cf969284ebac1dfc25bf824999d74b016d51366  libp11-0.4.11.tar.gz
+sha256  d80c9d084ebfb50ea1ed91bfbc2410d6ce542097a32c43b00781b83adcb8c77f  COPYING

package/libp11/libp11.mk

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+################################################################################
+#
+# libp11
+#
+################################################################################
+
+LIBP11_VERSION = 0.4.11
+LIBP11_SITE = https://github.com/OpenSC/libp11/releases/download/libp11-$(LIBP11_VERSION)
+LIBP11_DEPENDENCIES = openssl host-pkgconf
+LIBP11_INSTALL_STAGING = YES
+LIBP11_LICENSE = LGPL-2.1+
+LIBP11_LICENSE_FILES = COPYING
+
+# pkg-config returns a libcrypto enginesdir prefixed with the sysroot,
+# so let's rip it out.
+LIBP11_CONF_OPTS = \
+	--with-enginesdir=`$(PKG_CONFIG_HOST_BINARY) --variable enginesdir libcrypto | xargs readlink -f | sed 's%^$(STAGING_DIR)%%'`
+
+ifeq ($(BR2_PACKAGE_P11_KIT),y)
+LIBP11_CONF_OPTS += --with-pkcs11-module=/usr/lib/p11-kit-proxy.so
+endif
+
+HOST_LIBP11_DEPENDENCIES = host-pkgconf host-openssl
+
+$(eval $(autotools-package))
+$(eval $(host-autotools-package))