mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-30 08:09:04 +00:00
19 lines
531 B
Plaintext
19 lines
531 B
Plaintext
# pipe2.m4 serial 2
|
|
dnl Copyright (C) 2009-2020 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_PIPE2],
|
|
[
|
|
AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
|
|
|
|
dnl Persuade glibc <unistd.h> to declare pipe2().
|
|
AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
|
|
|
|
AC_CHECK_FUNCS_ONCE([pipe2])
|
|
if test $ac_cv_func_pipe2 != yes; then
|
|
HAVE_PIPE2=0
|
|
fi
|
|
])
|