anchor.diff:  LIBCPLUSPLUS = ""
   COMPILER_RT ?= "-rtlib=compiler-rt"
   
  +CXXFLAGS += "-stdlib=libstdc++"
  +LDFLAGS += "-unwindlib=libgcc -stdlib=libstdc++"
   INHIBIT_DEFAULT_DEPS = "1"
   
   LIC_FILES_CHKSUM = "file://libcxx/LICENSE.TXT;md5=55d89dd7eec8d3b4204b680e27da3953 \
  
positive.code: require clang.inc
  require common-source.inc
  
  inherit cmake python3native
  
  PACKAGECONFIG ??= "compiler-rt exceptions ${@bb.utils.contains("RUNTIME", "llvm", "unwind unwind-shared", "", d)}"
  PACKAGECONFIG_append_armv5 = " no-atomics"
  
negative.code: 
  ALLOW_EMPTY_${PN} = "1"
  
  PROVIDES += "${@bb.utils.contains("RUNTIME", "llvm", "libunwind", "", d)}"
  
  BBCLASSEXTEND = "native nativesdk"
  TOOLCHAIN = "clang"
  