Fix android libc++ build

3rdparty/carotene/src/common.hpp

@@ -41,6 +41,7 @@
 #define CAROTENE_SRC_COMMON_HPP
 
 #include <cstddef>
+#include <cstdlib>
 #include <algorithm>
 
 #if defined WITH_NEON && (defined __ARM_NEON__ || defined __ARM_NEON)

platforms/android/android.toolchain.cmake

@@ -1048,8 +1048,7 @@ if( BUILD_WITH_ANDROID_NDK )
   set( ANDROID_RTTI             ON )
   set( __libstl                "${ANDROID_NDK}/sources/cxx-stl/llvm-libc++" )
   set( __libstl                "${__libstl}/libs/${ANDROID_NDK_ABI_NAME}/libc++_static.a" )
-  set( __libgnustl             "${ANDROID_NDK}/sources/cxx-stl/gnu-libstdc++/${ANDROID_COMPILER_VERSION}" )
-  set( ANDROID_STL_INCLUDE_DIRS "${__libgnustl}/include" "${__libgnustl}/libs/${ANDROID_NDK_ABI_NAME}/include" "${__libgnustl}/include/backward" )
+  set( ANDROID_STL_INCLUDE_DIRS "${ANDROID_NDK}/sources/android/support/include" "${ANDROID_NDK}/sources/cxx-stl/llvm-libc++/libcxx/include" "${ANDROID_NDK}/sources/cxx-stl/llvm-libc++abi/libcxxabi/include" )
  else()
   message( FATAL_ERROR "Unknown runtime: ${ANDROID_STL}" )
  endif()