/usr/share/dune/aclocal/cxx0x_nullptr.m4 is in libdune-common-dev 2.4.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | AC_DEFUN([NULLPTR_CHECK],[
AC_CACHE_CHECK([whether nullptr is supported], dune_cv_nullptr_support, [
AC_REQUIRE([AC_PROG_CXX])
AC_REQUIRE([CXX11])
AC_LANG_PUSH([C++])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
[],[[
char* ch = nullptr;
if(ch!=nullptr) { ; }
]])],
dune_cv_nullptr_support=yes,
dune_cv_nullptr_support=no)
AC_LANG_POP
])
if test "x$dune_cv_nullptr_support" = xyes; then
AC_DEFINE(HAVE_NULLPTR, 1, [Define to 1 if nullptr is supported])
fi
])
|