Bump buildroot to 2019.02

bsp/buildroot/package/llvm/Config.in

@@ -0,0 +1,48 @@
+config BR2_PACKAGE_LLVM_ARCH_SUPPORTS
+	bool
+	default y if BR2_i386
+	default y if BR2_x86_64
+	default y if BR2_aarch64
+	default y if BR2_arm || BR2_armeb
+
+config BR2_PACKAGE_LLVM_TARGET_ARCH
+	string
+	default "AArch64" if BR2_aarch64
+	default "ARM" if BR2_arm || BR2_armeb
+	default "X86" if BR2_i386 || BR2_x86_64
+
+config BR2_PACKAGE_LLVM
+	bool "llvm"
+	depends on BR2_PACKAGE_LLVM_ARCH_SUPPORTS
+	depends on BR2_HOST_GCC_AT_LEAST_4_8
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
+	depends on BR2_TOOLCHAIN_HAS_THREADS
+	depends on BR2_INSTALL_LIBSTDCPP
+	depends on !BR2_TOOLCHAIN_HAS_GCC_BUG_64735 # std::shared_future
+	depends on !BR2_STATIC_LIBS
+	depends on BR2_USE_WCHAR # std::wstring
+	help
+	  The LLVM Project is a collection of modular and reusable
+	  compiler and toolchain technologies.
+
+	  http://llvm.org
+
+if BR2_PACKAGE_LLVM
+
+config BR2_PACKAGE_LLVM_AMDGPU
+	bool "AMDGPU backend"
+	help
+	  Build AMDGPU target. Select this option if you are going
+	  to install mesa3d with llvm and use Gallium Radeon driver.
+
+endif
+
+comment "llvm needs a toolchain w/ wchar, threads, C++, gcc >= 4.8, host gcc >= 4.8, dynamic library"
+	depends on BR2_PACKAGE_LLVM_ARCH_SUPPORTS
+	depends on !BR2_TOOLCHAIN_HAS_THREADS || !BR2_INSTALL_LIBSTDCPP || \
+		!BR2_HOST_GCC_AT_LEAST_4_8 || !BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 \
+		|| BR2_STATIC_LIBS || !BR2_USE_WCHAR
+
+comment "llvm needs a toolchain not affected by GCC bug 64735"
+	depends on BR2_PACKAGE_LLVM_ARCH_SUPPORTS
+	depends on BR2_TOOLCHAIN_HAS_GCC_BUG_64735