initial buildroot for linux 5.15

package/libpng/0001-Disable-pngfix-and-png-fix-itxt.patch

@@ -0,0 +1,47 @@
+From 60c3ee917c8e7a4760b1ef7c3dc2b44a615150d3 Mon Sep 17 00:00:00 2001
+From: Gustavo Zacarias <gustavo@zacarias.com.ar>
+Date: Thu, 26 May 2016 16:26:18 -0300
+Subject: [PATCH] Disable pngfix and png-fix-itxt
+
+Disable the new pngfix and png-fix-itxt tools: they take up space, fail
+to build on some oddball toolchain configurations and aren't
+expected/needed in a non-interactive embedded system.
+
+[Julien: update for 1.6.25]
+Signed-off-by: Julien Boibessot <julien.boibessot@armadeus.com>
+
+Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
+---
+ Makefile.am | 2 +-
+ Makefile.in | 2 +-
+ 2 files changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/Makefile.am b/Makefile.am
+index 7212951..3430dca 100644
+--- a/Makefile.am
++++ b/Makefile.am
+@@ -18,7 +18,7 @@ check_PROGRAMS += timepng
+ endif
+ 
+ # Utilities - installed
+-bin_PROGRAMS= pngfix png-fix-itxt
++bin_PROGRAMS=
+ 
+ # This ensures that pnglibconf.h gets built at the start of 'make all' or
+ # 'make check', but it does not add dependencies to the individual programs,
+diff --git a/Makefile.in b/Makefile.in
+index a66f6aa..4e67782 100644
+--- a/Makefile.in
++++ b/Makefile.in
+@@ -104,7 +104,7 @@ check_PROGRAMS = pngtest$(EXEEXT) pngunknown$(EXEEXT) \
+ 	pngstest$(EXEEXT) pngvalid$(EXEEXT) pngimage$(EXEEXT) \
+ 	pngcp$(EXEEXT) $(am__EXEEXT_1)
+ @HAVE_CLOCK_GETTIME_TRUE@am__append_1 = timepng
+-bin_PROGRAMS = pngfix$(EXEEXT) png-fix-itxt$(EXEEXT)
++bin_PROGRAMS =
+ @PNG_ARM_NEON_TRUE@am__append_2 = arm/arm_init.c\
+ @PNG_ARM_NEON_TRUE@	arm/filter_neon.S arm/filter_neon_intrinsics.c
+ 
+-- 
+2.7.3
+

package/libpng/Config.in

@@ -0,0 +1,8 @@
+config BR2_PACKAGE_LIBPNG
+	bool "libpng"
+	select BR2_PACKAGE_ZLIB
+	help
+	  Library for handling PNG (Portable Network Graphics)
+	  images.
+
+	  http://www.libpng.org/

package/libpng/libpng.hash

@@ -0,0 +1,6 @@
+# From https://sourceforge.net/projects/libpng/files/libpng16/1.6.37/
+md5 015e8e15db1eecde5f2eb9eb5b6e59e9  libpng-1.6.37.tar.xz
+sha1 3ab93fabbf4c27e1c4724371df408d9a1bd3f656  libpng-1.6.37.tar.xz
+# Locally computed:
+sha256 505e70834d35383537b6491e7ae8641f1a4bed1876dbfe361201fc80868d88ca  libpng-1.6.37.tar.xz
+sha256 bf5e22b9dce8464064ae17a48ea1133c3369ac9e1d80ef9e320e5219aa14ea9b  LICENSE

package/libpng/libpng.mk

@@ -0,0 +1,32 @@
+################################################################################
+#
+# libpng
+#
+################################################################################
+
+LIBPNG_VERSION = 1.6.37
+LIBPNG_SERIES = 16
+LIBPNG_SOURCE = libpng-$(LIBPNG_VERSION).tar.xz
+LIBPNG_SITE = http://downloads.sourceforge.net/project/libpng/libpng$(LIBPNG_SERIES)/$(LIBPNG_VERSION)
+LIBPNG_LICENSE = Libpng-2.0
+LIBPNG_LICENSE_FILES = LICENSE
+LIBPNG_CPE_ID_VENDOR = libpng
+LIBPNG_INSTALL_STAGING = YES
+LIBPNG_DEPENDENCIES = host-pkgconf zlib
+HOST_LIBPNG_DEPENDENCIES = host-pkgconf host-zlib
+LIBPNG_CONFIG_SCRIPTS = libpng$(LIBPNG_SERIES)-config libpng-config
+
+ifeq ($(BR2_ARM_CPU_HAS_NEON)$(BR2_aarch64),y)
+LIBPNG_CONF_OPTS += --enable-arm-neon
+else
+LIBPNG_CONF_OPTS += --disable-arm-neon
+endif
+
+ifeq ($(BR2_X86_CPU_HAS_SSE2),y)
+LIBPNG_CONF_OPTS += --enable-intel-sse
+else
+LIBPNG_CONF_OPTS += --disable-intel-sse
+endif
+
+$(eval $(autotools-package))
+$(eval $(host-autotools-package))