initial buildroot for linux 5.15

package/bullet/0001-Extras-VHACD-inc-vhacdMutex.h-fix-musl-build.patch

@@ -0,0 +1,42 @@
+From dd37b97e79aea231ae026ac93c6ca4c7a2667582 Mon Sep 17 00:00:00 2001
+From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+Date: Sat, 7 Aug 2021 17:11:24 +0200
+Subject: [PATCH] Extras/VHACD/inc/vhacdMutex.h: fix musl build
+
+Fix the following build failure on musl (which does not provide
+PTHREAD_MUTEX_RECURSIVE_NP):
+
+In file included from /tmp/instance-5/output-1/build/bullet-3.09/src/LinearMath/btScalar.h:289,
+                 from /tmp/instance-5/output-1/build/bullet-3.09/src/LinearMath/btVector3.h:19,
+                 from /tmp/instance-5/output-1/build/bullet-3.09/src/LinearMath/btConvexHullComputer.h:18,
+                 from /tmp/instance-5/output-1/build/bullet-3.09/Extras/VHACD/src/VHACD.cpp:28:
+/tmp/instance-5/output-1/build/bullet-3.09/Extras/BulletRobotics/../../Extras/VHACD/inc/vhacdMutex.h: In constructor 'VHACD::Mutex::Mutex()':
+/tmp/instance-5/output-1/build/bullet-3.09/Extras/BulletRobotics/../../Extras/VHACD/inc/vhacdMutex.h:97:54: error: 'PTHREAD_MUTEX_RECURSIVE_NP' was not declared in this scope; did you mean 'PTHREAD_MUTEX_RECURSIVE'?
+   97 |   VHACD_VERIFY(pthread_mutexattr_settype(&mutexAttr, PTHREAD_MUTEX_RECURSIVE_NP) == 0);
+      |                                                      ^~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Fixes:
+ - http://autobuild.buildroot.org/results/79cd2024b3dfc8d3e896cdacf67fb891df81ca6e
+
+Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+[Upstream status: https://github.com/bulletphysics/bullet3/pull/3930]
+---
+ Extras/VHACD/inc/vhacdMutex.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/Extras/VHACD/inc/vhacdMutex.h b/Extras/VHACD/inc/vhacdMutex.h
+index 4d1ad2a7d..78c111383 100644
+--- a/Extras/VHACD/inc/vhacdMutex.h
++++ b/Extras/VHACD/inc/vhacdMutex.h
+@@ -69,7 +69,7 @@
+ #include <pthread.h>
+ #endif
+ 
+-#if defined(__APPLE__)
++#if defined(__APPLE__) || !defined(__GLIBC__)
+ #define PTHREAD_MUTEX_RECURSIVE_NP PTHREAD_MUTEX_RECURSIVE
+ #endif
+ 
+-- 
+2.30.2
+

package/bullet/Config.in

@@ -0,0 +1,15 @@
+config BR2_PACKAGE_BULLET
+	bool "bullet"
+	depends on BR2_INSTALL_LIBSTDCPP
+	depends on !BR2_STATIC_LIBS # dlfcn.h
+	depends on BR2_TOOLCHAIN_HAS_THREADS
+	depends on BR2_USE_WCHAR
+	help
+	  Bullet is a Collision Detection and Rigid Body Dynamics
+	  Library.
+
+	  http://bulletphysics.org
+
+comment "bullet needs a toolchain w/ C++, dynamic library, threads, wchar"
+	depends on !BR2_INSTALL_LIBSTDCPP || BR2_STATIC_LIBS || \
+		!BR2_TOOLCHAIN_HAS_THREADS || !BR2_USE_WCHAR

package/bullet/bullet.hash

@@ -0,0 +1,3 @@
+# Locally calculated
+sha256 f2feef9322329c0571d9066fede2db0ede92b19f7f7fdf54def3b4651f02af03  bullet-3.09.tar.gz
+sha256 885cd516a8420acb7c3e0b1a7119913b686495001ae564e3229740460e8cff59  LICENSE.txt

package/bullet/bullet.mk

@@ -0,0 +1,33 @@
+################################################################################
+#
+# bullet
+#
+################################################################################
+
+BULLET_VERSION = 3.09
+BULLET_SITE = $(call github,bulletphysics,bullet3,$(BULLET_VERSION))
+BULLET_INSTALL_STAGING = YES
+BULLET_LICENSE = Zlib
+BULLET_LICENSE_FILES = LICENSE.txt
+
+# Disable unit tests.
+# Don't disable demos apps and Bullet3 library to avoid a build failure:
+# https://github.com/bulletphysics/bullet3/issues/3143
+BULLET_CONF_OPTS = -DBUILD_UNIT_TESTS=OFF
+
+# extras needs dlfcn.h and NPTL (pthread_barrier_init)
+ifeq ($(BR2_STATIC_LIBS):$(BR2_TOOLCHAIN_HAS_THREADS_NPTL),:y)
+BULLET_CONF_OPTS += -DBUILD_EXTRAS=ON
+else
+BULLET_CONF_OPTS += -DBUILD_EXTRAS=OFF
+endif
+
+BULLET_CXXFLAGS = $(TARGET_CXXFLAGS)
+
+ifneq ($(BR2_TOOLCHAIN_HAS_GCC_BUG_85180)$(BR2_TOOLCHAIN_HAS_GCC_BUG_101952),)
+BULLET_CXXFLAGS += -O0
+endif
+
+BULLET_CONF_OPTS += -DCMAKE_CXX_FLAGS="$(BULLET_CXXFLAGS)"
+
+$(eval $(cmake-package))