initial buildroot for linux 5.15

package/pixman/0001-Disable-tests.patch

@@ -0,0 +1,29 @@
+From 9b8132738c364fc3c886e81e7d383aaff80dc867 Mon Sep 17 00:00:00 2001
+From: "Yann E. MORIN" <yann.morin.1998@free.fr>
+Date: Sat, 5 Dec 2015 12:00:53 +0100
+Subject: [PATCH] Disable tests
+
+Tests are causing build failures on some architectures that are missing
+a proper fenv.h, so just disable them.
+
+Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
+
+---
+Status: Buildroot specific, not suitable for upstream in this state.
+---
+ Makefile.am | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/Makefile.am b/Makefile.am
+index 5137c9e..eae79fd 100644
+--- a/Makefile.am
++++ b/Makefile.am
+@@ -1,4 +1,4 @@
+-SUBDIRS = pixman demos test
++SUBDIRS = pixman demos
+ 
+ pkgconfigdir=$(libdir)/pkgconfig
+ pkgconfig_DATA=pixman-1.pc
+-- 
+1.9.1
+

package/pixman/Config.in

@@ -0,0 +1,6 @@
+config BR2_PACKAGE_PIXMAN
+	bool "pixman"
+	help
+	  Cairo pixel manager
+
+	  http://cairographics.org/releases/

package/pixman/pixman.hash

@@ -0,0 +1,6 @@
+# From https://lists.x.org/archives/xorg-announce/2020-April/003043.html
+sha256  da8ed9fe2d1c5ef8ce5d1207992db959226bd4e37e3f88acf908fd9a71e2704e  pixman-0.40.0.tar.xz
+sha512  8a60edb113d68791b41bd90b761ff7b3934260cb3dada3234c9351416f61394e4157353bc4d61b8f6c2c619de470f6feefffb4935bfcf79d291ece6285de7270  pixman-0.40.0.tar.xz
+
+# Locally computed
+sha256  fac9270f0987b96ff4533fca3548c633e02083cbba4a0172a3b149b2e4019793  COPYING

package/pixman/pixman.mk

@@ -0,0 +1,63 @@
+################################################################################
+#
+# pixman
+#
+################################################################################
+
+PIXMAN_VERSION = 0.40.0
+PIXMAN_SOURCE = pixman-$(PIXMAN_VERSION).tar.xz
+PIXMAN_SITE = https://xorg.freedesktop.org/releases/individual/lib
+PIXMAN_LICENSE = MIT
+PIXMAN_LICENSE_FILES = COPYING
+PIXMAN_CPE_ID_VENDOR = pixman
+
+PIXMAN_INSTALL_STAGING = YES
+PIXMAN_DEPENDENCIES = host-pkgconf
+HOST_PIXMAN_DEPENDENCIES = host-pkgconf
+
+# For 0001-Disable-tests.patch
+PIXMAN_AUTORECONF = YES
+
+# don't build gtk based demos
+PIXMAN_CONF_OPTS = --disable-gtk
+
+# The ARM SIMD code from pixman requires a recent enough ARM core, but
+# there is a runtime CPU check that makes sure it doesn't get used if
+# the HW doesn't support it. The only case where the ARM SIMD code
+# cannot be *built* at all is when the platform doesn't support ARM
+# instructions at all, so we have to disable that explicitly.
+ifeq ($(BR2_ARM_CPU_HAS_ARM),y)
+PIXMAN_CONF_OPTS += --enable-arm-simd
+else
+PIXMAN_CONF_OPTS += --disable-arm-simd
+endif
+
+ifeq ($(BR2_ARM_CPU_HAS_ARM)$(BR2_ARM_CPU_HAS_NEON),yy)
+PIXMAN_CONF_OPTS += --enable-arm-neon
+else
+PIXMAN_CONF_OPTS += --disable-arm-neon
+endif
+
+# disable iwmmxt support for CPU's that don't have
+# this feature
+ifneq ($(BR2_iwmmxt),y)
+PIXMAN_CONF_OPTS += --disable-arm-iwmmxt
+endif
+
+PIXMAN_CFLAGS = $(TARGET_CFLAGS)
+
+# toolchain gets confused about TLS access through GOT (PIC), so disable TLS
+# movhi	r4, %got_hiadj(%tls_ldo(fast_path_cache))
+# {standard input}:172: Error: bad expression
+ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII),y)
+PIXMAN_CFLAGS += -DPIXMAN_NO_TLS
+endif
+
+ifeq ($(BR2_TOOLCHAIN_HAS_GCC_BUG_101737),y)
+PIXMAN_CFLAGS += -O0
+endif
+
+PIXMAN_CONF_OPTS += CFLAGS="$(PIXMAN_CFLAGS)"
+
+$(eval $(autotools-package))
+$(eval $(host-autotools-package))