initial buildroot for linux 5.15

package/xapian/Config.in

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+config BR2_PACKAGE_XAPIAN
+	bool "xapian"
+	depends on BR2_USE_MMU # fork()
+	depends on BR2_INSTALL_LIBSTDCPP
+	select BR2_PACKAGE_ZLIB
+	help
+	  Xapian is an open Source search engine Library
+	  It is a highly adaptable toolkit which allows developers
+	  to easily add advanced indexing and search facilities to
+	  their own applications.
+	  It has built-in support for several families of weighting
+	  models and supports a rich set of boolean query operators.
+
+	  https://xapian.org/
+
+comment "xapian needs a toolchain w/ C++"
+	depends on BR2_USE_MMU
+	depends on !BR2_INSTALL_LIBSTDCPP

package/xapian/xapian.hash

@@ -0,0 +1,5 @@
+# From https://lists.xapian.org/pipermail/xapian-discuss/2021-January/009856.html
+sha256  196ddbb4ad10450100f0991a599e4ed944cbad92e4a6fe813be6dce160244b77  xapian-core-1.4.18.tar.xz
+
+# locally computed
+sha256  c38aee9e3c8c4d5d594ff548a1be05453023016d6286931f6512db215ec1fd42  COPYING

package/xapian/xapian.mk

@@ -0,0 +1,17 @@
+################################################################################
+#
+# xapian
+#
+################################################################################
+
+XAPIAN_VERSION = 1.4.18
+XAPIAN_SOURCE = xapian-core-$(XAPIAN_VERSION).tar.xz
+XAPIAN_SITE = https://oligarchy.co.uk/xapian/$(XAPIAN_VERSION)
+XAPIAN_LICENSE = GPL-2.0+
+XAPIAN_LICENSE_FILES = COPYING
+XAPIAN_CPE_ID_VENDOR = xapian
+XAPIAN_CPE_ID_PRODUCT = xapian-core
+XAPIAN_INSTALL_STAGING = YES
+XAPIAN_DEPENDENCIES = zlib
+
+$(eval $(autotools-package))