Please check the GNU Autoconf Macro Archive for Updates
AC-Archive
Autoconf Macro Archive

ac-archive.sf.net: - Project CVS - Download
Macro Index
- AM Support
- C++ Support
- C Support
- Fortran Support
- Java Support
- Cross Compilation
- Installed Packages
- Miscellaneous
- LaTeX Support
- Uncategorized
- archive macros
- adl's macros
- bkorb's macros
- guidod's macros
- latex's macros
- other's macros
- rleigh's macros
- obsoleted macros
- released macros
- search index

Documentation
- Contribute!
- History
- acincludedir m4
- acinclude (tool)
- macro howto
- ax tricks
- maintainers
- License
- Topics

generated...
2007-08-05

(C) 2007 guidod
Download the M4 Source.

ac_cxx_mutable

Back to the Main Page.

Synopsis
AC_CXX_MUTABLE
, 
, 
Version

2004-02-04

Author

Todd Veldhuizen Luc Maisonobe <luc@spaceroots.org>

License

AllPermissive
Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved. Users of this software should generally follow the principles of the MIT License includings its disclaimer.

Category

cryp.to ac-archive's C++ Support (released)

Documentation

If the compiler allows modifying class data members flagged with the mutable keyword even in const objects (for example in the body of a const member function), define HAVE_MUTABLE.

M4 Source Code
AC_DEFUN([AC_CXX_MUTABLE],
[AC_CACHE_CHECK(whether the compiler supports the mutable keyword,
ac_cv_cxx_mutable,
[AC_LANG_SAVE
 AC_LANG_CPLUSPLUS
 AC_TRY_COMPILE([
class A { mutable int i;
          public:
          int f (int n) const { i = n; return i; }
        };
],[A a; return a.f (1);],
 ac_cv_cxx_mutable=yes, ac_cv_cxx_mutable=no)
 AC_LANG_RESTORE
])
if test "$ac_cv_cxx_mutable" = yes; then
  AC_DEFINE(HAVE_MUTABLE,,[define if the compiler supports the mutable keyword])
fi
])