diff options
Diffstat (limited to 'gettext-tools/gnulib-m4/dup2.m4')
| -rw-r--r-- | gettext-tools/gnulib-m4/dup2.m4 | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/gettext-tools/gnulib-m4/dup2.m4 b/gettext-tools/gnulib-m4/dup2.m4 index 59028e0..5b68312 100644 --- a/gettext-tools/gnulib-m4/dup2.m4 +++ b/gettext-tools/gnulib-m4/dup2.m4 @@ -1,5 +1,5 @@ -#serial 24 -dnl Copyright (C) 2002, 2005, 2007, 2009-2015 Free Software Foundation, Inc. +#serial 25 +dnl Copyright (C) 2002, 2005, 2007, 2009-2016 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. @@ -62,6 +62,16 @@ AC_DEFUN([gl_FUNC_DUP2], result |= 32; dup2 (2, 255); dup2 (2, 256); + /* On OS/2 kLIBC, dup2() does not work on a directory fd. */ + { + int fd = open (".", O_RDONLY); + if (fd == -1) + result |= 64; + else if (dup2 (fd, fd + 1) == -1) + result |= 128; + + close (fd); + } return result;]]) ], [gl_cv_func_dup2_works=yes], [gl_cv_func_dup2_works=no], @@ -78,6 +88,8 @@ AC_DEFUN([gl_FUNC_DUP2], gl_cv_func_dup2_works="guessing no" ;; *-android*) # implemented using dup3(), which fails if oldfd == newfd gl_cv_func_dup2_works="guessing no" ;; + os2*) # on OS/2 kLIBC, dup2() does not work on a directory fd. + gl_cv_func_dup2_works="guessing no" ;; *) gl_cv_func_dup2_works="guessing yes" ;; esac]) ]) |