diff options
Diffstat (limited to 'gnulib/m4/fchdir.m4')
| m--------- | gnulib | 0 | ||||
| -rw-r--r-- | gnulib/m4/fchdir.m4 | 47 |
2 files changed, 47 insertions, 0 deletions
diff --git a/gnulib b/gnulib deleted file mode 160000 -Subproject 4fc10daa05477586fea99b6b3ca02a87d1102fa diff --git a/gnulib/m4/fchdir.m4 b/gnulib/m4/fchdir.m4 new file mode 100644 index 00000000..c05e9255 --- /dev/null +++ b/gnulib/m4/fchdir.m4 @@ -0,0 +1,47 @@ +# fchdir.m4 serial 13 +dnl Copyright (C) 2006-2010 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +AC_DEFUN([gl_FUNC_FCHDIR], +[ + AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) + AC_REQUIRE([gl_DIRENT_H_DEFAULTS]) + AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS]) + AC_CHECK_FUNCS_ONCE([fchdir]) + if test $ac_cv_func_fchdir = no; then + REPLACE_FCHDIR=1 + AC_LIBOBJ([fchdir]) + gl_PREREQ_FCHDIR + AC_DEFINE([REPLACE_FCHDIR], [1], + [Define to 1 if gnulib's fchdir() replacement is used.]) + dnl We must also replace anything that can manipulate a directory fd, + dnl to keep our bookkeeping up-to-date. We don't have to replace + dnl fstatat, since no platform has fstatat but lacks fchdir. + REPLACE_OPENDIR=1 + REPLACE_CLOSEDIR=1 + REPLACE_DUP=1 + gl_REPLACE_OPEN + gl_REPLACE_CLOSE + gl_REPLACE_DUP2 + dnl dup3 is already unconditionally replaced + gl_REPLACE_FCNTL + gl_REPLACE_DIRENT_H + AC_CACHE_CHECK([whether open can visit directories], + [gl_cv_func_open_directory_works], + [AC_RUN_IFELSE([AC_LANG_PROGRAM([[#include <fcntl.h> +]], [return open(".", O_RDONLY) < 0;])], + [gl_cv_func_open_directory_works=yes], + [gl_cv_func_open_directory_works=no], + [gl_cv_func_open_directory_works="guessing no"])]) + if test "$gl_cv_func_open_directory_works" != yes; then + AC_DEFINE([REPLACE_OPEN_DIRECTORY], [1], [Define to 1 if open() should +work around the inability to open a directory.]) + REPLACE_FSTAT=1 + fi + fi +]) + +# Prerequisites of lib/fchdir.c. +AC_DEFUN([gl_PREREQ_FCHDIR], [:]) |