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greenhills: add empty "__extension__" definition to fix build error

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"libcxxmini/libxx_cxa_guard.cxx", line 47: error #77-D: this declaration has
          no storage class or type specifier
  __extension__ typedef int __guard __attribute__((mode(__DI__)));
  ^

"libcxxmini/libxx_cxa_guard.cxx", line 47: error #65: expected a ";"
  __extension__ typedef int __guard __attribute__((mode(__DI__)));
                ^

"libcxxmini/libxx_cxa_guard.cxx", line 64: error #20: identifier "__guard" is
          undefined
    int __cxa_guard_acquire(FAR __guard *g)
                                ^

"libcxxmini/libxx_cxa_guard.cxx", line 64: error #20: identifier "g" is
          undefined
    int __cxa_guard_acquire(FAR __guard *g)
                                         ^

"libcxxmini/libxx_cxa_guard.cxx", line 65: error #65: expected a ";"
    {
    ^

"libcxxmini/libxx_cxa_guard.cxx", line 93: warning #12-D: parsing restarts
          here after previous syntax error
  }

Signed-off-by: guoshichao <guoshichao@xiaomi.com>
This commit is contained in:
guoshichao 2024-08-10 15:59:33 +08:00 committed by archer
parent b3627bb8c6
commit c95a9fc304
1 changed files with 9 additions and 1 deletions
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10
include/nuttx/compiler.h
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@ -87,12 +87,20 @@
# define CONFIG_HAVE_CXX14 1
#endif
/* Green Hills Software definitions *****************************************/
#if defined(__ghs__)
# define __extension__
#endif
/* GCC-specific definitions *************************************************/
#ifdef __GNUC__
/* Built-ins */
# if __GNUC__ >= 4
# if __GNUC__ >= 4 && !defined(__ghs__)
# define CONFIG_HAVE_BUILTIN_BSWAP16 1
# define CONFIG_HAVE_BUILTIN_BSWAP32 1
# define CONFIG_HAVE_BUILTIN_BSWAP64 1