coreutils/m4/unlink-busy.m4

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#serial 7
dnl From J. David Anglin.
dnl HPUX and other systems can't unlink shared text that is being executed.
AC_DEFUN([gl_FUNC_UNLINK_BUSY_TEXT],
[dnl
AC_CACHE_CHECK([whether a running program can be unlinked],
jm_cv_func_unlink_busy_text,
[
AC_TRY_RUN([
main (argc, argv)
int argc;
char **argv;
{
if (!argc)
exit (-1);
exit (unlink (argv[0]));
}
],
jm_cv_func_unlink_busy_text=yes,
jm_cv_func_unlink_busy_text=no,
jm_cv_func_unlink_busy_text=no
)
]
)
if test $jm_cv_func_unlink_busy_text = no; then
INSTALL=$ac_install_sh
fi
])