nuttx/libs/libxx
zhuyanlin 803599faeb uClibc++:remove typeinfo.cpp that confict with libsupc++
Typeinfo.cpp already defined in libsupc++
2021-09-09 16:38:30 +08:00
..
libcxxmini libxx: Move the partial c++ abi implementation to libcxxmini sub folder 2021-08-31 06:52:10 -03:00
.gitignore libc:libxx: add new low level c++ standard library support 2021-08-26 19:32:24 +08:00
0001-libc-abi-avoid-the-waring-__EXCEPTIONS-is-not-define.patch libcxxabi: Avoid the waring: "__EXCEPTIONS" is not defined, evaluates to 0 [-Werror=undef] 2021-08-28 17:13:43 -03:00
0001-libc-avoid-the-waring-__EXCEPTIONS-is-not-defined-ev.patch libcxx: Avoid the waring: "__EXCEPTIONS" is not defined, evaluates to 0 [-Werror=undef] 2021-08-28 17:13:43 -03:00
0001-Remove-the-locale-fallback-for-NuttX.patch
0001-uClibcxx-basic_definitions-fix-GCC-specific-definiti.patch libxx:uClibcxx:fix-GCC-specific-definitiion error 2021-08-31 11:23:29 +08:00
Kconfig libxx: Move the partial c++ abi implementation to libcxxmini sub folder 2021-08-31 06:52:10 -03:00
libcxx.defs libxx: Move libcxxabi special setting from libcxx.defs to libcxxabi.defs 2021-08-30 10:44:24 +02:00
libcxxabi.defs libs/libxx: Enforce RTTI for building libcxxabi 2021-09-01 21:02:17 +08:00
libcxxmini.defs libxx: Move the partial c++ abi implementation to libcxxmini sub folder 2021-08-31 06:52:10 -03:00
libxx_cxa_atexit.cxx libxx: Move the partial c++ abi implementation to libcxxmini sub folder 2021-08-31 06:52:10 -03:00
libxx_eabi_atexit.cxx
libxx_impure.cxx
libxx.hxx libxx: Move the partial c++ abi implementation to libcxxmini sub folder 2021-08-31 06:52:10 -03:00
Makefile libxx: Move the partial c++ abi implementation to libcxxmini sub folder 2021-08-31 06:52:10 -03:00
README.txt
system_configuration.h
uClibc++.defs uClibc++:remove typeinfo.cpp that confict with libsupc++ 2021-09-09 16:38:30 +08:00

libs/libxx/README.txt
^^^^^^^^^^^^^^^^^^^^^

This directory contains three C++ library:

 - A fragmentary C++ library that will allow to build only the simplest of
   C++ applications. In the deeply embedded world, that is probably all
   that is necessary.

   At present, only the following are supported here:

     - void *operator new(std::size_t nbytes);
     - void operator delete(void* ptr);
     - void operator delete[](void *ptr);
     - void __cxa_pure_virtual(void);
     - int __aeabi_atexit(void* object, void (*destroyer)(void*),
                          void *dso_handle);
     - int __cxa_atexit(__cxa_exitfunc_t func, FAR void *arg,
                        FAR void *dso_handle);

   This implementation is selected when neither of the following
   two options are enabled.

 - LLVM "libc++" C++ library (http://libcxx.llvm.org/)
   This implementation is selected with CONFIG_LIBCXX=y.

 - uClibc++ C++ library (http://cxx.uclibc.org/)
   This implementation is selected with CONFIG_UCLIBCXX=y.

operator new
------------

  This operator should take a type of size_t.  But size_t has an unknown underlying
  type.  In the nuttx sys/types.h header file, size_t is typed as uint32_t
  (which is determined by architecture-specific logic).  But the C++
  compiler may believe that size_t is of a different type resulting in
  compilation errors in the operator.  Using the underlying integer type
  instead of size_t seems to resolve the compilation issues. Need to
  REVISIT this.

  Once some C++ compilers, this will cause an error:

    Problem:     "'operator new' takes size_t ('...') as first parameter"
    Workaround:  Add -fpermissive to the compilation flags