diff options
Diffstat (limited to 'gl/m4/dup2.m4')
| -rw-r--r-- | gl/m4/dup2.m4 | 58 |
1 files changed, 0 insertions, 58 deletions
diff --git a/gl/m4/dup2.m4 b/gl/m4/dup2.m4 deleted file mode 100644 index 998d66f8..00000000 --- a/gl/m4/dup2.m4 +++ /dev/null @@ -1,58 +0,0 @@ -#serial 10 -dnl Copyright (C) 2002, 2005, 2007, 2009-2010 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_DUP2], -[ - AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) - AC_REQUIRE([AC_CANONICAL_HOST]) - AC_CHECK_FUNCS_ONCE([dup2]) - if test $ac_cv_func_dup2 = no; then - HAVE_DUP2=0 - AC_LIBOBJ([dup2]) - else - AC_CACHE_CHECK([whether dup2 works], [gl_cv_func_dup2_works], - [AC_RUN_IFELSE([ - AC_LANG_PROGRAM([[#include <unistd.h> -#include <errno.h>]], - [if (dup2 (1, 1) == 0) - return 1; - close (0); - if (dup2 (0, 0) != -1) - return 2; - /* Many gnulib modules require POSIX conformance of EBADF. */ - if (dup2 (1, 1000000) == -1 && errno != EBADF) - return 3; - return 0; - ]) - ], - [gl_cv_func_dup2_works=yes], [gl_cv_func_dup2_works=no], - [case "$host_os" in - mingw*) # on this platform, dup2 always returns 0 for success - gl_cv_func_dup2_works=no;; - cygwin*) # on cygwin 1.5.x, dup2(1,1) returns 0 - gl_cv_func_dup2_works=no;; - linux*) # On linux between 2008-07-27 and 2009-05-11, dup2 of a - # closed fd may yield -EBADF instead of -1 / errno=EBADF. - gl_cv_func_dup2_works=no;; - freebsd*) # on FreeBSD 6.1, dup2(1,1000000) gives EMFILE, not EBADF. - gl_cv_func_dup2_works=no;; - *) gl_cv_func_dup2_works=yes;; - esac]) - ]) - if test "$gl_cv_func_dup2_works" = no; then - gl_REPLACE_DUP2 - fi - fi -]) - -AC_DEFUN([gl_REPLACE_DUP2], -[ - AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) - if test $ac_cv_func_dup2 = yes; then - REPLACE_DUP2=1 - fi - AC_LIBOBJ([dup2]) -]) |