initial buildroot for linux 5.15

package/readline/0001-curses-link.patch

@@ -0,0 +1,18 @@
+link readline directly to ncurses since it needs symbols from it
+
+upstream readline does this on purpose (no direct linking), but
+it doesn't make much sense in a Linux world
+
+Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
+
+--- a/support/shobj-conf
++++ b/support/shobj-conf
+@@ -42,7 +42,7 @@
+ SHOBJ_LIBS=
+ 
+ SHLIB_XLDFLAGS=
+-SHLIB_LIBS=
++SHLIB_LIBS=-lncurses
+ 
+ SHLIB_DOT='.'
+ SHLIB_LIBPREF='lib'

package/readline/Config.in

@@ -0,0 +1,27 @@
+config BR2_PACKAGE_READLINE
+	bool "readline"
+	select BR2_PACKAGE_NCURSES
+	help
+	  The GNU Readline library provides a set of functions for use
+	  by applications that allow users to edit command lines
+	  as they are typed in.
+
+	  https://tiswww.case.edu/php/chet/readline/rltop.html
+
+config BR2_PACKAGE_READLINE_BRACKETED_PASTE
+	bool "Enable bracketed paste"
+	depends on BR2_PACKAGE_READLINE
+	help
+	  Enable the "bracketed paste" feature in libreadline.
+
+	  Bracketed paste is helpful for interactive sessions when
+	  one wants to prevent pasted text from being interpreted
+	  as typed-in commands. However, it also causes control
+	  characters to show up in the raw output of a (telnet)
+	  session. This can cause issues and throw off pattern
+	  matching if the session output is being captured for
+	  automated processing.
+
+	  For further information on this feature and whether you
+	  may want it, see:
+	      https://cirw.in/blog/bracketed-paste

package/readline/inputrc

@@ -0,0 +1,44 @@
+# /etc/inputrc - global inputrc for libreadline
+# See readline(3readline) and `info readline' for more information.
+
+# Be 8 bit clean.
+set input-meta on
+set output-meta on
+set bell-style visible
+
+# To allow the use of 8bit-characters like the german umlauts, comment out
+# the line below. However this makes the meta key not work as a meta key,
+# which is annoying to those which don't need to type in 8-bit characters.
+
+# set convert-meta off
+
+"\e0d": backward-word
+"\e0c": forward-word
+"\e[h": beginning-of-line
+"\e[f": end-of-line
+"\e[1~": beginning-of-line
+"\e[4~": end-of-line
+#"\e[5~": beginning-of-history
+#"\e[6~": end-of-history
+"\e[3~": delete-char
+"\e[2~": quoted-insert
+
+# Common standard keypad and cursor
+# (codes courtsey Werner Fink, <werner@suse.de>)
+#"\e[1~": history-search-backward
+"\e[2~": yank
+"\e[3~": delete-char
+#"\e[4~": set-mark
+"\e[5~": history-search-backward
+"\e[6~": history-search-forward
+# Normal keypad and cursor of xterm
+"\e[F": end-of-line
+"\e[H": beginning-of-line
+# Application keypad and cursor of xterm
+"\eOA": previous-history
+"\eOC": forward-char
+"\eOB": next-history
+"\eOD": backward-char
+"\eOF": end-of-line
+"\eOH": beginning-of-line
+

package/readline/readline.hash

@@ -0,0 +1,5 @@
+# Locally calculated after checking pgp signature
+sha256  f8ceb4ee131e3232226a17f51b164afc46cd0b9e6cef344be87c65962cb82b02  readline-8.1.tar.gz
+
+# Hash for license file
+sha256  8ceb4b9ee5adedde47b31e975c1d90c73ad27b6b165a1dcd80c7c545eb65b903  COPYING

package/readline/readline.mk

@@ -0,0 +1,31 @@
+################################################################################
+#
+# readline
+#
+################################################################################
+
+READLINE_VERSION = 8.1
+READLINE_SITE = $(BR2_GNU_MIRROR)/readline
+READLINE_INSTALL_STAGING = YES
+READLINE_DEPENDENCIES = ncurses host-autoconf
+HOST_READLINE_DEPENDENCIES = host-ncurses host-autoconf
+READLINE_CONF_ENV = bash_cv_func_sigsetjmp=yes \
+	bash_cv_wcwidth_broken=no
+READLINE_CONF_OPTS = --disable-install-examples
+READLINE_LICENSE = GPL-3.0+
+READLINE_LICENSE_FILES = COPYING
+READLINE_CPE_ID_VENDOR = gnu
+
+ifeq ($(BR2_PACKAGE_READLINE_BRACKETED_PASTE),y)
+READLINE_CONF_OPTS += --enable-bracketed-paste-default
+else
+READLINE_CONF_OPTS += --disable-bracketed-paste-default
+endif
+
+define READLINE_INSTALL_INPUTRC
+	$(INSTALL) -D -m 644 package/readline/inputrc $(TARGET_DIR)/etc/inputrc
+endef
+READLINE_POST_INSTALL_TARGET_HOOKS += READLINE_INSTALL_INPUTRC
+
+$(eval $(autotools-package))
+$(eval $(host-autotools-package))