Macro: ac_func_mkdir

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# ac_func_mkdir

## Synopsis

`AC_FUNC_MKDIR`

## Version

1.1.1.1 (2001/07/26) C_Support @ ac-archive-0.5.32

## Author

Alexandre Duret-Lutz <duret_g@epita.fr>

## Description

Check whether mkdir() is mkdir or _mkdir, and whether it takes one or two arguments.

This macro can define HAVE_MKDIR, HAVE__MKDIR, and MKDIR_TAKES_ONE_ARG, which are expected to be used as follow:

`#if HAVE_MKDIR`
`# if MKDIR_TAKES_ONE_ARG`
`/* Mingw32 */`
`# define mkdir(a,b) mkdir(a)`
`# endif`
`#else`
`# if HAVE__MKDIR`
`/* plain Win32 */`
`# define mkdir(a,b) _mkdir(a)`
`# else`
`# error "Don't know how to create a directory on this system."`
`# endif`
`#endif`

## M4 Source Code

    AC_DEFUN([AC_FUNC_MKDIR],
    [AC_CHECK_FUNCS([mkdir _mkdir])
    AC_CACHE_CHECK([whether mkdir takes one argument],
                    [ac_cv_mkdir_takes_one_arg],
    [AC_TRY_COMPILE([
    #include <sys/stat.h>
    #if HAVE_UNISTD_H
    # include <unistd.h>
    #endif
    ],[mkdir (".");],
    [ac_cv_mkdir_takes_one_arg=yes],[ac_cv_mkdir_takes_one_arg=no])])
    if test x"$ac_cv_mkdir_takes_one_arg" = xyes; then
      AC_DEFINE([MKDIR_TAKES_ONE_ARG],1,
                [Define if mkdir takes only one argument.])
    fi
    ])

    dnl Note:
    dnl =====
    dnl I have not implemented the following suggestion because I don't have
    dnl access to such a broken environment to test the macro.  So I'm just
    dnl appending the comments here in case you have, and want to fix
    dnl AC_FUNC_MKDIR that way.
    dnl
    dnl |Thomas E. Dickey (dickey@herndon4.his.com) said:
    dnl |  it doesn't cover the problem areas (compilers that mistreat mkdir
    dnl |  may prototype it in dir.h and dirent.h, for instance).
    dnl |
    dnl |Alexandre:
    dnl |  Would it be sufficient to check for these headers and #include
    dnl |  them in the AC_TRY_COMPILE block?  (and is AC_HEADER_DIRENT
    dnl |  suitable for this?)
    dnl |
    dnl |Thomas:
    dnl |  I think that might be a good starting point (with the set of recommended
    dnl |  ifdef's and includes for AC_HEADER_DIRENT, of course).