initial buildroot for linux 5.15

package/swig/Config.in.host

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+config BR2_PACKAGE_HOST_SWIG
+	bool "host swig"
+	help
+	  swig is a software development tool that connects programs
+	  written in C and C++ with a variety of high-level
+	  programming languages.
+
+	  http://www.swig.org/

package/swig/swig.hash

@@ -0,0 +1,5 @@
+# Locally computed:
+sha256	d53be9730d8d58a16bf0cbd1f8ac0c0c3e1090573168bfa151b01eb47fa906fc	swig-4.0.2.tar.gz
+sha256	f53abaeed775018d519a1b9615f0ca17894772bd9ca21c2a156bf340ac41c13e	LICENSE
+sha256	8ceb4b9ee5adedde47b31e975c1d90c73ad27b6b165a1dcd80c7c545eb65b903	LICENSE-GPL
+sha256	7f50d942373a871211c5efee03f3db2f9efd1cff1002b0ef8e3748baa611a5c2	LICENSE-UNIVERSITIES

package/swig/swig.mk

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+################################################################################
+#
+# swig
+#
+################################################################################
+
+SWIG_VERSION_MAJOR = 4.0
+SWIG_VERSION = $(SWIG_VERSION_MAJOR).2
+SWIG_SITE = http://downloads.sourceforge.net/project/swig/swig/swig-$(SWIG_VERSION)
+HOST_SWIG_DEPENDENCIES = host-bison host-pcre
+HOST_SWIG_CONF_OPTS = \
+	--with-pcre \
+	--disable-ccache \
+	--without-octave
+SWIG_LICENSE = GPL-3.0+, BSD-2-Clause, BSD-3-Clause
+SWIG_LICENSE_FILES = LICENSE LICENSE-GPL LICENSE-UNIVERSITIES
+
+# CMake looks first at swig3.0, then swig2.0 and then swig. However,
+# when doing the search, it will look into the PATH for swig2.0 first,
+# and then for swig.
+# While the PATH contains first our $(HOST_DIR)/bin, it also contains
+# /usr/bin and other system directories. Therefore, if there is an
+# installed swig3.0 on the system, it will get the preference over the
+# swig installed in $(HOST_DIR)/bin, which isn't nice. To prevent
+# this from happening we create a symbolic link swig3.0 -> swig, so that
+# our swig always gets used.
+
+define HOST_SWIG_INSTALL_SYMLINK
+	ln -fs swig $(HOST_DIR)/bin/swig$(SWIG_VERSION_MAJOR)
+	ln -fs swig $(HOST_DIR)/bin/swig3.0
+endef
+
+HOST_SWIG_POST_INSTALL_HOOKS += HOST_SWIG_INSTALL_SYMLINK
+
+$(eval $(host-autotools-package))
+
+SWIG = $(HOST_DIR)/bin/swig$(SWIG_VERSION_MAJOR)