rmdir-errno.m4

Linux下文件工具。

#serial 3

# When rmdir fails because the specified directory is not empty, it sets
# errno to some value, usually ENOTEMPTY.  However, on some AIX systems,
# ENOTEMPTY is mistakenly defined to be EEXIST.  To work around this, and
# in general, to avoid depending on the use of any particular symbol, this
# test runs a test to determine the actual numeric value.
AC_DEFUN([fetish_FUNC_RMDIR_NOTEMPTY],
[dnl
  AC_CACHE_CHECK([for rmdir-not-empty errno value],
    fetish_cv_func_rmdir_errno_not_empty,
    [
      # Arrange for deletion of the temporary directory this test creates.
      ac_clean_files="$ac_clean_files confdir2"
      mkdir confdir2; : > confdir2/file
      AC_TRY_RUN([
#include <stdio.h>
#include <errno.h>
#ifndef errno
extern int errno;
#endif
	int main ()
	{
	  FILE *s;
	  int val;
	  rmdir ("confdir2");
	  val = errno;
	  s = fopen ("confdir2/errno", "w");
	  fprintf (s, "%d\n", val);
	  exit (0);
	}
	],
      fetish_cv_func_rmdir_errno_not_empty=`cat confdir2/errno`,
      fetish_cv_func_rmdir_errno_not_empty='configure error in rmdir-errno.m4',
      fetish_cv_func_rmdir_errno_not_empty=ENOTEMPTY
      )
    ]
  )

  AC_DEFINE_UNQUOTED([RMDIR_ERRNO_NOT_EMPTY],
    $fetish_cv_func_rmdir_errno_not_empty,
    [the value to which errno is set when rmdir fails on a nonempty directory])
])