initial buildroot for linux 5.15

package/tclap/Config.in

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+comment "tclap needs a toolchain w/ C++"
+	depends on !BR2_INSTALL_LIBSTDCPP
+
+config BR2_PACKAGE_TCLAP
+	bool "tclap"
+	depends on BR2_INSTALL_LIBSTDCPP
+	help
+	  This is a small, flexible library that provides a simple
+	  interface for defining and accessing command line
+	  arguments. It was initially inspired by the user friendly
+	  CLAP libary. The difference is that this library is
+	  templatized, so the argument class is type independent. Type
+	  independence avoids identical-except-for-type objects, such
+	  as IntArg, FloatArg, and StringArg. While the library is not
+	  strictly compliant with the GNU or POSIX standards, it is
+	  close.
+
+	  http://tclap.sourceforge.net/

package/tclap/tclap.hash

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+# Locally computed:
+sha256  634c5b59dbb1ccbc9d6a5f6de494a257e29a3f59dcb6fc30445ff39b45188574  tclap-1.2.4.tar.gz
+sha256  cd81a61d47aeb1ed63036ca260baee37719923bbd7ebd988ec4edae128f3b6eb  COPYING

package/tclap/tclap.mk

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+################################################################################
+#
+# tclap
+#
+################################################################################
+
+TCLAP_VERSION = 1.2.4
+TCLAP_SITE = http://downloads.sourceforge.net/project/tclap
+TCLAP_LICENSE = MIT
+TCLAP_LICENSE_FILES = COPYING
+TCLAP_INSTALL_STAGING = YES
+TCLAP_CPE_ID_VENDOR = tclap_project
+
+# This package is a pure C++ template library, only made of headers.
+TCLAP_INSTALL_TARGET = NO
+
+$(eval $(autotools-package))