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/m4/namespaces.m4

http://google-sparsehash.googlecode.com/
m4 | 15 lines | 14 code | 0 blank | 1 comment | 0 complexity | 44ba9b9f3eeb20193fd3b107be1abbaf MD5 | raw file
Possible License(s): BSD-3-Clause 
    

  1. # Checks whether the compiler implements namespaces
    2. 

  2. AC_DEFUN([AC_CXX_NAMESPACES],
    3. 

  3.  [AC_CACHE_CHECK(whether the compiler implements namespaces,
    4. 

  4.                  ac_cv_cxx_namespaces,
    5. 

  5.                  [AC_LANG_SAVE
    6. 

  6.                   AC_LANG_CPLUSPLUS
    7. 

  7.                   AC_TRY_COMPILE([namespace Outer {
    8. 

  8.                                     namespace Inner { int i = 0; }}],
    9. 

  9.                                  [using namespace Outer::Inner; return i;],
    10. 

  10.                                  ac_cv_cxx_namespaces=yes,
    11. 

  11.                                  ac_cv_cxx_namespaces=no)
    12. 

  12.                   AC_LANG_RESTORE])
    13. 

  13.   if test "$ac_cv_cxx_namespaces" = yes; then
    14. 

  14.     AC_DEFINE(HAVE_NAMESPACES, 1, [define if the compiler implements namespaces])
    15. 

  15.   fi])
    16. 

  16.