18 lines
570 B
Plaintext
18 lines
570 B
Plaintext
dnl Available from the GNU Autoconf Macro Archive at:
|
|
dnl http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_explicit.html
|
|
dnl
|
|
AC_DEFUN([AC_CXX_EXPLICIT],
|
|
[AC_CACHE_CHECK(whether the compiler supports the explicit keyword,
|
|
ac_cv_cxx_explicit,
|
|
[AC_LANG_SAVE
|
|
AC_LANG_CPLUSPLUS
|
|
AC_TRY_COMPILE([class A{public:explicit A(double){}};],
|
|
[double c = 5.0;A x(c);return 0;],
|
|
ac_cv_cxx_explicit=yes, ac_cv_cxx_explicit=no)
|
|
AC_LANG_RESTORE
|
|
])
|
|
if test "$ac_cv_cxx_explicit" = yes; then
|
|
AC_DEFINE(HAVE_EXPLICIT,,[define if the compiler supports the explicit keyword])
|
|
fi
|
|
])
|